CURRICULUM VITAE

 

Jaime Ramírez-Angulo

 

Updated: September 10, 2005

 

Jaime Ramírez-Angulo is currently Klipsch Professor, IEEE fellow, and Director of the Mixed-Signal VLSI lab at the  Klipsch School of Electrical and Computer Engineering, New Mexico State University   ( Las Cruces, New Mexico), USA. He received  a degree  in Communications and Electronic Engineering (Professional degree), a M.S.E.E. from the National Polytechnic Institute in Mexico City and a Dr.-Ing degree form the University of Stuttgart in Stuttgart, Germany in 1974, 1976 and 1982 respectively. He was professor at the National Institute for Astrophysics Optics and Electronics (INAOE) and at Texas A&M University. His research is related to various aspects of design and test of analog and mixed-signal  Very Large Scale Integrated Circuits. He has made numerous contributions to this field  which have been reported in over three  hundred fifty  publications in the most prestigious journals and conferences in analog circuit design. He has two high technology patents and has held numerous invited and keynote presentations. He has been a consultant to Texas Instruments, NASA-ACE, NASA-Ames and Oak Ridge National Laboratories. His research has been supported by National Science Foundation, Sandia National Labs, Engineering Foundation, Texas Instruments and Agilent. He received the prestigious URC University Research Council for exceptional achievements in creative scholarly activities  and the Westhafer award for Excellence in Research and Creativity in  March and May 2002 respectively. The Westhafer award is   the highest faculty award for research merits at  New Mexico State University. On October 2002 he was named Paul W.  Klipsch Distinguished Professor and is currently and IEEE distinguished lecturer for the period 2003-2005.

 

1.         PERSONAL DATA AND HOW TO CONTACT ME

2.         DEGREES

3.         RESEARCH

4.         PROFESSIONAL EXPERIENCE

5.         HONORS AND AWARDS

6.         PUBLICATIONS

a)      Journal papers

b)      Book Chapters

c)      Conference papers

 

7.         FUNDING

8.         GRADUATE SUDENTS

9.         INVITED PRESENTATIONS

10.       MOST IMPORTANT RESEARCH CONTRIBUTIONS

11.       PROFESSIONAL ACTIVITIES

12.       PATENTS

 

1. PERSONAL DATA AND HOW TO CONTACT ME

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Professor of Electrical and Computer Engineering Field of specialty: VLSI/Microelectronics

 

Director of VLSI laboratory at New Mexico State University

 

Address:           New Mexico State University

Klipsch School of Electrical and Computer Engineering, Las Cruces, New Mexico 88003-0001

Tel. (505) 646‑4406, FAX (505) 646-1435, email:  jramirez@nmsu.edu  http://www.ece.nmsu.edu/people/ramirez-angulo.html

 

Home address: 7309    Desierto Pais

El Paso, TX 79912

Tel: (915) 585-0279         

 

Date of Birth: February 18, 1952

 

Marital Status:  Married, four children

2. DEGREES

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Thesis Design of Electronic Circuits: Low Computational Cost Algorithms for Production Yield Improvement (Field: Computer Aided. Design of Electronic Circuits) Ph.D. at University of Stuttgart from 1977-1982

 

Thesis: Design of Acoustic Surface Wave Filters (Masters Degree at CINVESTAV-IPN from 1974-1976)

 

 

3. RESEARCH

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Microelectronics, Analog and Digital VLSI Circuit Design, Integrated Continuous-time and Switched-Capacitor Filters,  Current-mode techniques for Analog Signal  Processing, Neural and Fuzzy Networks, Device Modeling, Fault detection in analog and digital VLSI systems. BiCMOS circuit design, low-voltage low-power  design techniques, RF microelectronic circuit design. High speed/High Slew rate Operational Amplifiers

 

4. PROFESSIONAL EXPERIENCE

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1982-1984       Researcher and Instructor at INAOE (Instituto Nacional de Astrofisica, Optica y Electronica), Tonantzintla, Puebla, Mexico. Field of work: Microelectronic Circuit Design

 

1985-1989       Assistant Professor at Texas A&M University, College Station, Texas. Field of work: Microelectronic Circuit Design

 

1990-Present   Associate Professor, Full Professor (since August 95), New Mexico State University. Field of work: Microelectronic Circuit Design

 

5b. Courses Taught

 

Electronic Devices and Circuits, Design of Circuits with Operational Amplifiers, Active Filters, Analog Microelectronics, Computer Aided Circuit Design, Digital VLSI System Design, Fuzzy Processors, CMOS RF Microelectronics, A/D and D/A conversion techniques.

5. HONORS AND AWARDS

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6.  PUBLICATIONS

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6a. Journal papers

 

1.                  "Fabrication of Thin Fim Hybrid microcircuits", J. Ramírez‑Angulo A. Ortiz‑Gonzalez  and J. Fragoso‑Lopez, Physics and Technology of Semiconductors (in spanish), vol.1, No. 3, pp. 270‑280, March 1983.

 

2.                  "AROMA: An Area Optimized CAD Program for Cascade SC Filter Design",  E. Sánchez‑Sinencio and J. Ramírez‑Angulo, IEEE Trans. on Computer Aided Design, vol. CAD‑4, No.3, pp. 296‑302, July 1985.

 

3.                  "Component Quantization Effects on Continuous Time Filters", J. Ramírez‑Angulo, R. L. Geiger and E. Sánchez‑Sinencio, IEEE Transactions on Circuits and Systems, vol. CAS‑33, No. 6, pp. 651‑659, June 1986.

 

4.                  "Characterization, Evaluation and Comparison of Laser-Trimmed Film Resistors," J. Ramírez-Angulo, R. L. Geiger and E. Sánchez-Sinencio, IEEE Journal of Solid State Circuits, vol. SC-22, No. 6, pp. 1177-1189, December 1987.

 

5.                  "New Laser-Trimmed Film Resistor Structures for Very High Stability Requirements," J. Ramírez-Angulo and R. L. Geiger, IEEE Transactions on Electron Devices, vol. ED-35, No. 4, pp. 516-518, April 1988.

 

6.                  "Design of Active Filters for Large Variations in the Gain-Bandwidth Product," J. Ramírez-Angulo, Proceedings of the IEEE, vol. 76, No. 10, pp. 1368-1370, October 1988.

 

7.                  "FIESTA: A Filter Educational Synthesis Teaching-Aid," M. Kobe, J. Ramírez-Angulo, E. Sánchez-Sinencio, IEEE Transactions on Education, vol. 32, No. 3.  pp. 280-286, August 1989.

 

8.                  "OTA-Based Nonlinear Function Approximation," E. Sánchez-Sinencio, J. Ramírez-Angulo and B. Linares Barranco, IEEE Journal of Solid Sate Circuits, vol. 24, No. 6, pp. 1576-1586, December 1989.

 

9.                  "Active Compensation of Operational Transconductance Amplifier Filters Using Partial Positive Feedback," J. Ramírez-Angulo and E. Sánchez-Sinencio, IEEE Journal of Solid State Circuits, vol. SC-25, No. 4, pp. 1024-1028, August 1990.

 

10.              ”Extended Transconductance Adjustment/linearisation Technique", W. J. Adams and J. Ramírez-Angulo, Electronics Letters, vol. 27, No. 10, pp. 842-844, May 1991.

 

 

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11.              "Applications of Composite BICMOS Transistors," J. Ramírez-Angulo, M. Deyong  and W.J. Adams, Electronics Letters, Vol. 27, No. 24, pp. 2236-2238, Nov. 1991.

 

12.              "A High Frequency Low Voltage CMOS diode", J. Ramírez-Angulo, Electronics Letters, Vol. 28, No. 3, pp. 299-301, January 1992.

 

13.              "Current Mode Continuous-Time Filters: Two Design Approaches", J. Ramírez-Angulo, E. Sánchez-Sinencio and M. Robinson, IEEE Transactions on Circuits and Systems, vol. 39, No. 6, June 1992, pp. 337-341.

 

14.              "Programmable BiCMOS Transconductor for C-TA filters", J. Ramírez-Angulo and E. Sánchez-Sinencio, Electronics Letters, vol. 28, No. 13, June 4th 1992, pp. 1185-1187.

 

15.              " A low-voltage vertical BiCMOS OTA", J. Ramírez-Angulo, IEE proceedings Part G, Vol. 139, No. 4, August 1992, pp. 553-556

 

16.              "Highly Linear Four Quadrant BiCMOS Analogue Multiplier", Jaime Ramírez-Angulo, Electronics Letters, vol. 28, No. 19, September 10th 1992, pp. 1783-178.

 

17.              "A BICMOS Current Buffer Rectifier," J. Ramírez-Angulo, IEEE Transactions on Circuits and Systems, vol. 39, No. 10, Oct. 92, pp. 849-851.

 

18.              "A Compact Current controlled CMOS Waveform Generator," J. Ramírez-Angulo, IEEE Transactions on Circuits and Systems, vol. 39, No. 12 December 1992, pp. 883-885.

 

19.              "Digitally Tunable MOS Current Mirrors for High Precision Applications", J. Ramírez-Angulo, IEE Proceedings Part G, vol. 140, No. 2, April 1993.

 

20.              "OTA-C Biquad Filter Silicon Compiler", M.R.Kobe, E. Sánchez-Sinencio and J. Ramírez-Angulo, Analog Integrated Circuits and Signal Processing, pp. 83-98, vol. 3, No. 3, May 1993.

 

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21.              "A Current mode Cellular Neural Network Implementation," J. Varrientos, E. Sánchez-Sinencio and J. Ramírez-Angulo, IEEE Transactions on Circuits and Systems, vol. 40, No 3, pp. 147-155, March 1993

 

22.              “BiCMOS Low Distortion Tunable Transconductor for Continuous-Time Filters", M. Ali, M. Howe, E. Sánchez-Sinencio and J. Ramírez-Angulo, IEEE Transactions on Circuits and Systems, vol. 40, No.1, pp. 43-48, January 1993

 

23.              "iDD pulse response testing: A unified approach to testing analog and digital  VLSI circuits," J. Beasley, H. Ramamurthy, M. DeYong and J. Ramírez-Angulo, IEE Electronics Letters, vol. 29, No. 24, pp. 2101-2013, November 1993.

 

24.              “Low-Voltage Building Blocks for Fuzzy Processors, J. Ramírez-Angulo, IEEE Circuits and Devices Magazine, vol. 10, No. 4, July 1994, pp. 48-50

 

25.              "Large f0Q Second Order Filters Using Multiple Output OTAs", Jaime Ramírez-Angulo and E. Sánchez-Sinencio,  IEEE Transactions on Circuits and Systems, Vol. 41, No. 9, pp. 587-592, September 1994

 

26.              "High frequency compensated current-mode ladder filters using multiple output OTAs," Jaime Ramírez-Angulo and E. Sánchez-Sinencio,   IEEE Transactions on Circuits and Systems, Vol. 41, No. 9, pp. 581-586, Sept. 1994

 

27.              “Wide Range Gain Programmable class AB linear Current Mirrors for low supply operation,” , J. Ramirez-Angulo,  IEEE Transactions on Circuits and Systems, Vol. 41, No. 9, pp. 631-634, September 1994

 

28.              "Low-Voltage OTA architectures Using Multiple Input Floating gate Transistors," J. Ramírez-Angulo, S.C. Choi, G. Gonzalez-Altamirano, IEEE Transactions on Circuits and Systems, vol. 42, No. 12, pp.971-974, November 1995.

 

29.              "OTA:GS filters: the new face of RC-active filters", J. Ramírez-Angulo and G. Gonzalez Revista Mexicana de Fisica, vol. 42, No. 3 pp. 459-466, July 1996.

 

30.              "Charge Mode Defuzzifiers using multiple input floating-gate transistors," J, Ramírez-Angulo, V. Quintana, S.C. Choi, D. Zrilic and A. de Luca International Journal of Intelligent Automation and Soft Control, Special Issue on Autonomous Control Engineering, vol. 3, No. 1, pp. 5-12, February 1997

 

31.              "Low-Voltage High-Frequency Continuous-time Filters Based on Simple Transconductors and Miller Integrators", J. Ramírez-Angulo, Journal of Analog Integrated Circuits and Signal Processing, pp. 295-301, May 1997.

 

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32.              "A simple technique for low-voltage op-amp operation in continuous-time," J. Ramírez-Angulo, A Torralba, R.G. Carvajal and  J.Tombs, IEE Electronics Letters, vol. 35, No. 4, February 18th, 1999, pp. 263-264

 

33.              ” A CMOS four quadrant Current/Transconductance multiplier,” A. Diaz-Sánchez, J. Ramírez-Angulo, E. Sánchez-Sinencio and Gubhee Han, Journal of Analog Integrated Circuits and Signal Processing, vol. 19, No. 2, May 1999, pp. 163-168.

 

34.              "Very Low-Voltage Class AB CMOS and Bipolar Precision Current rectifiers," J. Ramírez-Angulo, R.G. Carvajal, J. Tombs and A. Torralba, IEE Electronics Letters, Vol. 35. No. 22, October 1999, pp. 1904-1905.

 

35.              "Hardware Implementations of Fuzzy Membership fucntions, Operations and Inference,” Djuro G. Zrilic, Jaime Ramírez-Angulo and B.Yuan Computers and Electrical Engineering, Vol. 26, No. 1, January 2000, pp. 85-105

 

36.              Low-voltage CMOS amplifiers with wide input-output swing based on a novel scheme," J. Ramírez-Angulo, A Torralba, R.G. Carvajal and J.Tombs, IEEE Transactions on  Circuits and Systems-I, vol. 47, No. 5, May 2000, pp. 772-774.

 

37.               High-speed high-precision min/max circuits in CMOS technology Carvajal, RG; Ramirez-Angulo, J; Martinez-Heredia, : Electronics Letters; April 13 2000; v.36, no.8, p.697-699

 

38.              "Class AB output stage for low voltage CMOS op-amps with accurate quiescent current control," A. Torralba, R.G. Carvajal, J. Martinez-Heredia and J. Ramirez-Angulo, Electronics Letters, vol. 36, No. 21, 12th October 2000, pp. 1753-1754.

 

39.              "Floating-Gate based tunable CMOS low-voltage linear transconductor and its application to HF Gm-C filter design," F. Munoz, A. Torralba, R. G. Carvajal, J. Tombs, and J. Ramirez Angulo, IEEE Transactions on Circuits and Systems, special issue on applications of floating gate transistors, vol. 48, No. 1, January 2001, pp. 106-110

 

40.              "Low-voltage CMOS Op-amp with rail-to-rail signal swing for continuous-time signal processing using multiple-input floating-gate transistors," J. Ramirez-Angulo, R. G. Carvajal, J. Tombs, and A. Torralba, IEEE Transactions on Circuits and Systems, special issue on applications of floating gate transistors, vol. 48, No. 1, Jan. 2001, pp. 110-116

 

41.              “MITE Circuits: The Continuous time counterpart to switched capacitor circuits,"  Jaime Ramirez-Angulo and Antonio Lopez, IEEE Transactions on Circuits and Systems, special issue on applications of floating gate transistors, vol. 48, No. 1, January 2001, pp. 45-55

 

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42.              “Compact low-power high slew sate CMOS buffer for large capacitive loads,” A.Torralba, R.G.Carvajal, J. Galán, and J.Ramírez-Angulo, Electronics Letters vol. 38. No. 22, Oct. 24, 2002, pp. 1348-1349.

 

43.              “Low-power Low-voltage differential class-AB OTA for SC circuits,” G.Carvajal, J. Galán, J.Ramírez-Angulo and A.Torralba, Electronics Letters,  vol. 38, No. 22  pp. 1304-1305, Oct. 24, 2002.

 

44.              Simple technique using Local CMFB to  enhance Slew Rate and bandwidth of one-Stage CMOS op-amps,” Jaime Ramirez-Angulo and Michael Holmes. Electronics Letters, vol. 38, No 23, pp. 1409-1411, November 7th 2002,

 

45.              “Output stage for low supply voltage, high-performance CMOS mirrors,” A.Torrallba, Carvajal, F. Muñoz and J.Ramírez-Angulo,  Electronics Letters  vol. 38, No. 24, pp. 1528-1529, Nov. 21, 2002

 

46.              “Low Voltage Transconductor with High Linearity and large Bandwidth,” A.Torrallba, J.M. Martinez-Heredia, R.G. Carvajal,  and J.Ramírez-Angulo,, Electronics Letters  vol. 38, No. 25, pp. 1616-1617 December 5 2002

 

47.              “Innovative Built-In Self-Test Schemes for On-Chip Diagnosis, Compliant with the IEEE 1149.4 Mixed-Signal Test Bus Standard,” Gladys Omayra Ducoudray Acevedo and Jaime Ramírez-Angulo, Journal of Electronic Testing and Applications, vol. 19, issue 1, February 2003, pp. 21-28

 

48.              “An Analog Median Filter with Fuzzy Adaptation, “ J. Lemuz-Lopez, A, Diaz-Sanchez and J. Ramirez-Angulo, Microelectronics Reliablity; Feb. 2003; v.43, no.2, p.203-207

 

49.              “A New Analogue Switch for Very Low Voltage Applications, “ F. Muñoz,  J. Ramírez-AnguloLopez-Martin R.G. Carvajal A. Torralba1 B. Palomo and M. Kachare, IEE Electronics Letters, May 2003; v.39, no.9, p.701-702.

 

50.              “A new Family of Very Low-Voltage Analog Circuits Based on Quasi Floating Gate Transistors, J. Ramirez-Angulo, C. Urquidi, R.G. Carvajal, A. Lopez-Martin, IEEE Transactions on Circuits and Systems, II  v. 50, No. 5 May 2003, pp. 214-220

 

51.              “Low-voltage high-gain differential OTA for SC circuits,” Carvajal, RG; Palomo, B; Torralba, A; Munoz, F; Ramirez-Angulo, Electronics Letters; Aug 7 2003; v.39, no.16, p.1159-1160

 

52.              “Class AB output stages for low voltage CMOS op-amps with accurate quiescent current control by means of dynamic biasing,”  A. Torralba, R.G. Carvajal, J. Ramirez-Angulo, J. Tombs, F. Munoz, J.A. Galan , Journal of Analog Integrated Circuits and Signal Processing, Special Issue on ICECS  2001, Jul-Aug. 2003, Vol. 36, No. 1-2pp. 69-77.

 

53.              “Analog Adaptive Median Filters” Alejandro Díaz-Sánchez , Jaime Ramírez-Angulo and Javier Lemus-Lopez, Journal of Analog Integrated Circuits and Signal Processing v. 36, No. 3 Sept. 2003, pp. 207-213

 

54.              Low voltage class AB output stage for CMOS op-amps using multiple input floating gate Transistors, “ Carvajal, RG; Torralba, A; Tombs, J; Munoz, F; Ramirez-Angulo, J : Analog Integrated Circuits and Signal Processing; Sept. 2003; v.36, no.3, p.245-249.

 

55.              “Very Low Voltage Rail-to-Rail Programmable-Gain CMOS Amplifier”Jaime Ramírez-Angulo , Antonio J. López-Martín , Ramón G. Carvajal , and Chad Lackey, Journal of Analog Integrated Circuits and Signal Processing Dec 2003; v.37, no.3, p.269-273

 

56.              ”Low-voltage analog circuits based on wideband capacitive coupling, “,J. Ramirez-Angulo, J; C. Urquidi,  R.G. Carvajal, A. Torralba, ; A.J. Lopez-Martin, Journal of Analog Integrated Circuits and Signal Processing,  Dec 2003; v.37, no.3, p.253-257

 

57.              “Low-power low-voltage class-AB linear OTA for HF filters with a large tuning range J.A. Galan,  R.G. Carvajal, F. Munoz, A. Torralba,  J. Ramirez-Angulo, Journal of Analog Integrated Circuits and Signal Processing; Dec 2003; v.37, no.3, p.275-280

 

58.              “Low voltage CMOS analogue four quadrant multiplier based on flipped voltage followers,” J. Ramirez-Angulo, S. Thoutam, R.G. Carvajal and A. Lopez. Martin IEE Electronics Letters. Vol 39, No. 25, pp. 1771-1772, December 2003.

 

59.              “Low-voltage Power-efficient Adaptive Biasing for CMOS Amplifiers and Buffers,”  S. Baswa,  A.J. Lopez-Martin,  R.G. Carvajal, J. Ramirez-Angulo,  Electronics Letters; Feb. 19 2004; v.40, no.4, p.217-219.

 

60.              “Low-voltage Micropower Super Class AB CMOS OTA “ S. Baswa,  A.J. Lopez-Martin, J. Ramirez-Angulo,  R.G. Carvajal, Electronic Letters; Feb 19 2004; v.40, no.4, p.216-217.

 

61.              “Low supply voltage high-performance CMOS current mirror with low input and output voltage requirements,” Ramirez-Angulo, J; Carvajal, RG; Torralba, A,  IEEE Transactions on Circuits and Systems II-Express Briefs; March 2004; v.51, no.3, p.124-129

 

62.              “A Fully Parallel CMOS Analog Median Filter,” A. Diaz-Sanchez, J. Ramirez-Angulo,  A. Lopez-Martin, E. Sanchez-Sinencio,  IEEE Transactions on Circuits and Systems II-Express Briefs; March 2004; v.51, no.3, p.116-123

 

63.              “Very Low-voltage Analog Signal Processing Based on Quasi-floating Gate Transistors,” ,J. Ramirez-Angulo,  A.J. Lopez-Martin; R. G. Carvajal, F.M. Chavero, IEEE Journal of Solid State Circuits; March 2004; v.39, no.3, p.434-442.

 

64.               “1.1V Low-Power Delta Sigma Modulator fro 14-bit, 16KHz A/D Conversion Using a New Low-Voltage Class AB Op-Amp”, F. Munoz, A.P. Vega Leal, R.G. Carvajal, A. Torralba, J. Tombs and J. Ramirez-Angulo, Journal of Analog Integrated Circuits and Signal Processing, May 27, 2004

 

65.              New compact CMOS continuous-time low-voltage analog rank-order filter architecture , J. Ramirez-Angulo, R. Gonzalez-Carvajal, G.O. Ducoudray, A.J.  Lopez-Martin,  A. Torralba,   IEEE Transactions on Circuits and Systems II-Express Briefs; May 2004; v.51, no.5, p.257-261

 

66.              Very low voltage MOS translinear loops based on flipped voltage followers , Lopez-Martin, AJ; Carlosena, A; Ramirez-Angulo, Journal of Analog Integrated Circuits and Signal Processing; Jul. 2004; v.40, no.1, p.71-74

 

67.              “Biasing CMOS amplifiers using MOS transistors in subthreshold region,” Manoj Bikumandla, Jaime Ramírez-Angulo, Carlos Urquidi, Ramon G. Carvajal and Antonio J. Lopez-Martin, IEICE Electronics Express Vol.1,  No.12, pp. 339-345, September 25, 2004

 

68.              Rail-to-rail super class AB CMOS operational amplifiers ,”, S. Baswa, J. Ramirez-Angulo, A. J. López-Martín, R. G. Carvajal and M. Bikumandla Electronics Letters , January 6, 2005, vol. 41, No. 1  

 

69.              ” Reconfigurable Logic Family Based on Floating Gates,” L.F. Cisneros_Sinencio, A. Diaz-Sanchez and J. Ramirez-Angulo,IEICE Transactions Fundamentals Comunn. Electronics and Systems ; Nov 2004; v.E87C, no.11, p.1884-1888

 

70.              “Rail-to-Rail super Class AB CMOS Operational Amplifiers,” S. Baswa, J. Ramirez-Angulo, A.J. Lopez-Martin, R.G. Carvajal and M. Bikumandla, Electronics Letters, vol. 41, No. 1, January 6, 2005, pp. 1-2

 

71.              Low-Voltage Wide gm Adjustment Range, Highly Linear BiCMOS OTA,”, J. Ramírez-Angulo, Milind S. Sawant, A. J. López-Martín, and R. G. Carvajal,  ELEX: IEICE Electronics Express Letters, Vo.l 2, No. 4 pp. 127-132, February 25, 2005 

 

72.              A Low-Power Low-Voltage OTA-C Sinuosidal  Oscillator with a Large Tuning Range,” J. Galan, R. G. Carvajal, A. Torralba, F. Muñoz, and  J. Ramirez-Angulo, IEEE Transactions on Circuits and Systems I, vol. 52, no. 2 Feb. 2005, pp. 283-291

 

73.               “Novel Architectures of Class AB Current Mirrors with Programmable gain” C. Durbha, J. Ramirez-Angulo, R.G. Carvajal and A. Lopez-Martin, Journal of Analog Integrated Circuits and Signal Processing, Vol. 42,  February 2005, pp. 197-202

 

74.              “A Compact Tunable Transcoductor with high linearity,” M. Kachare, A.J. Lopez-Martin, J. Ramirez-Angulo and R.G. Carvajal, IEEE Transactions on Circuits and Systems II Express Briefs, vol. 52, No. 2 February 2005, pp. 82-84

 

75.               A new, true low voltage, Class-AB current mirror', A. Torralba, R. G.Carvajal, M.Jiménez, F. Muñoz, J. Ramírez-Angulo IEICE Electronics Express ELEX ,  Vo. 2, No. 4, Feb. 25, 2005, pp. 103-107

 

76.               “Linearization of MOS resistors using capacitive gate voltage averaging,” J. Ramirez-Angulo. M. Sawant, R.G. Carvajal and A. López-Martín, IEE Electronics Letters, vol. 41, No. 9, 28th April 2005, pp. 511-512

 

77.              “1.1 V Low-Power Sigma Delta Modulator for 14-bit, 16 kHz A/D Conversion suing a new low-voltage class-AB op-amp,” F. Munhoz, A.P. Vega-Leal, R.G. Carvajal, A. Torralba, j. Tombs and J. Ramirez-Angulo, Journal of Analog Integrated Circuits and Signal Processing, vol. 43, No. 1 April 2005, April 2005, pp. 31-38.

 

78.              “Low-Voltage Super Class AB CMOs OTA Cells with very high Slew Rate and Power Efficiency,”Antonio J. López-Martín , Sushmita Baswa , Jaime Ramirez-Angulo,  and Ramón G. Carvajal, IEEE Journal of Solid State Circuits, Vol. 40, No. 5, May 2005. pp. 1068-1077.

 

79.              “Hi-Speed High-precision Analog Rank Order Filter with O(n) complexity in CMOS Technology,” R G. Carvajal, J. Ramirez-Angulo, G.O.Ducoudray, and A. López-Martin  IEEE Journal  of Solid State Circuits, Vol. 40, No. 6, June 2005.

 

80.               “ A CMOS Transconductor with Multidecade Tuning  Using Balanced Current Scaling in Moderate Inversion,” J. Ramirez-Angulo, C. Durbha, A. Lopez  and R. G. Carvajal, IEEE Journal of Solid State Circuits ,Vol. 40, No. 5, May 2005, pp. 1078-1083

 

81.               “Low Voltage High Performance Voltage Mode and Current mode WTA  Circuits Based On Flipped Voltage Follower,” J. Ramírez-Angulo, G. Ducoudray-Acevedo, R. G. Carvajal and A. López-Martín,  IEEE Transactions on Circuits and Systems II, vol. 52, No. 7, July 2005, pp. 420-423.

 

82.              “The Flipped Voltage Follower: A useful cell for low-voltage low-power circuit design, “.R.G. Carvajal, J. Ramírez-Angulo, A. López-Martin, A. Torralba, J. Galán, A. Carlosena and F.Muñoz,  IEEE Transactions on Circuits and Systems II vol. 52, No. 7, 2005, July 2005,  pp. 1276-1291.

 

83.               “1.5-V Current-Mode CMOS True RMS-DC Converter Based on Class-AB Transconductors ,” C. A. De La Cruz-Blas, A. López-Martín, A.Carlosena, and J. Ramírez-Angulo, IEEE Transactions and Circuits and Systems II vol. 52, No. 7, July 2005, pp. 376-379.

 

84.              Compact Implementation of High Performance CMOS Current mirror” J. Ramirez-Angulo, M.S.  Sawant, A. López-Martin and R.G. Carvajal, Electronics Letters, vol. 41, No. 10, May 12, 2005, pp. 570-572.

 

85.              “New Low-Voltage Fully Programmable CMOS Triangular/Trapezoidal Function Generator Circuit, “ M. Kachare, J. Ramirez-Angulo, R.G. Cravajal and A. Lopez-Martin, IEEE Transactions on Circuits and Systems I, vol. 52, No. 10, October 2005, pp. 1-11

 

 

 

 

In print and Accepted for publication 

 

86.               Application of local CMFB techniques to  enhance Slew Rate and bandwidth of one-Stage CMOS operational-amplifiers,”  Michael Holmes and Jaime Ramirez-Angulo, IEEE Journal of Solid State Circuits (accepted for publication)

 

87.              “A New Low-Voltage CMOS Unity-Gain Buffer,” Antonio Torralba,  Ramón G. Carvajal,  Mariano Jiménez, Fernando Muñoz, and Jaime Ramírez-Angulo,  IEEE Transactions on Circuits and Systems II (in print)

 

88.              “A High-Speed Dynamic Current Sensor for iDD Test Based on the Flipped Voltage Follower,” Gladys Omayra Ducoudray,” Ramon Gonzalez-Carvajal , Jaime Ramírez-Angulo, Journal of Electronic Testing and Applications (accepted for publication)

 

89.              “Highly linear Wide Input Range CMOS OTA Architectures Operating in Subthreshold and Strong Inversion J. Ramirez-Angulo, C. Durbha, G.O. Ducoudray-Acevedo , RG. Carvajal and Antonio J. Lopez-Martin, special issue on "VLSI Design and Test”, Microelectronic Engineering Journal's (in print).

 

90.              “A Low Power High Frequency CMOS Continuous-time Filter With A large Tuning Range,” J. Galan, Ramón G. Carvajal, A. Torralba, Fernando Muñoz, and J. Ramirez-Angulo, IEE Proceedings Part G (in print)

 

91.              A Compact approach for CMOS waveform Generation and Analog Function Synthesis.,” R.L. Romero, J. Ramirez-Angulo, A. Lopez-Martin and R.G. Carvajal, IEEE Transactions on Circuits and Systems I (accepted with major revisions).

 

92.               “New Low-Voltage Class AB/AB CMOS Op-Amp with Rail-to-Rail Input/Output Swing, J. Ramírez-Angulo, Milind S. Sawant, S. Thoutam A. J. López-Martín and R. G. Carvajal,  IEEE Transactions on Circuits and Systems II (in print)

 

93.               “The Universal Op-Amp and Applications in Continuous-time Linear weighted Voltage addition,” J. Ramirez-Angulo and F, Ledesma, IEEE Transactions on Circuits and Systems II (in print)

 

94.              “Micropower CMOS S&H circuit for Ambient Intelligence applications,” A. J. López-Martín, C.A. De La Cruz, X. Ugalde, R. G. Carvajal and J. Ramirez-Angulo, Electronics Letters (in print)

 

95.              High Performance Current Mirror and its Applications in Low-voltage Rail-to-rail Voltage to Current Conversion,” Rahul Shukla,  Jaime Ramírez-Angulo, Antonio J. López-Martín,  and Ramon G. Carvajal, IEEE Transactions on Circuits and Systems II (in print)

 

 

 

Under review

 

96.               “Novel Very Low Voltage CMOS D/A Conversion Technique Based on Quasi-floating gate Transistors “,Antonio J. López-Martín , Jaime Ramírez-Angulo , Ramón González-Carvajal and Chad Lackey IEEE Transactions on  Circuits and Systems I (under review)

 

97.              "A Master-Slave scheme to Tune Gain of Transconductance Amplifiers with high Accuracy,” J. Ramirez-Angulo, IEEE Transactions on Instrumentation and Measurement (under Review)

 

98.               “High Speed compact CMOS Circuits for Continuous time weighted voltage addition,J. Ramirez-Angulo and F. Ledesma, Int. Journal of Circuit Theory and Applications, (under review)

 

99.              "Implementation of Trapezoidal Circuits with Fully independent Programmable Characteristics using Operational Transconductance Amplifiers,”  J. Ramírez-Angulo, J.  Zrilic and P. Saavedra,  IEEE Transactions on Instrumentation and measurement (under review)

 

 

100.          ”CMOS Current Conveyor with High Accuracy,” Electronics Letters A.J. Lopez-Martin, J. Ramirez-Angulo (under review)

 

101.           Low-voltage High Performance Compact All Cascode CMOS Current mirror,” A. Garimella, L. Garimella, J. Ramirez-Angulo, A. J. López-Martin and R.G. Carvajal, Electronics Letters (under review)

 

102.          “ A Restrained Neighborhood Analog Median Filter For Image Processing Applications, » Alejandro Díaz-Sánchez, Javier Lemus-Lopez, International Journalof Analog Integrated Cirucits and Signal Processing (under review)

 

 

103.          “A free but efficient low-voltage class AB two stage operational amplifier,”  Jaime Ramírez-Angulo,  Ramón G. Carvajal,  J. Galán,  and Antonio López-Martín, IEEE Transactions on Circuits and Systems II (under review)

 

104.           Super Class AB OTAs with Adaptive Biasing  and dynamic output Current J.,”J.  Galan, Jaime Ramirez-Angulo, , and Ramón G. Carvajal, Antonio J. López-Martín, IEEE Journal of Solid State Circuits (under review)

 

105.           A ±1.5-V 3-mW CMOS Transconductor with 75-dB SFDR for 6-Vpp Input Swings,” Antonio J. López-Martín , Jaime Ramirez-Angulo, and Ramón G. Carvajal, IEEE Journal  of Solid State Circuits (under review)

 

6b. Book chapters

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1.                  "Frequency  and Impedance Transformations", J. Ramírez-Angulo section 13.67, pp. 2192-2204  CRC Handbook on Circuits and Filters, 1995.

 

2.                  "Low Voltage Analog BiCMOS Circuit Building Blocks" IEEE Press book on Low Voltage Low Power Integrated Circuits and Systems. IEEE Press, New York, 1999, pp. 207-242.

 

3.                  Section: "Bandpass-Filter," Encyclopedia of Electrical and Electronics Engineering, John Wiley & Sons (1999).

 

4.                  Proceedings of the 42nd Midwest Symposium on Circuits and Systems

6c. Conference Papers

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1.                  "Implementation of Surface Acoustic Wave Filters for Application in Specific Communication and Electronic Problems (in spanish)", J. Ramírez‑Angulo and A. Serrano. IEEE MEXICON 76. Mexico City, July 7‑10, pp. II35‑II41, 1976.

 

2.                  “Acoustic Surface Wave Filters (in spanish)", J. Ramírez‑Angulo and  A.Serrano  XVIII Congress of the Mexican Physics Society, Veracruz, Mexico December 8‑11, pp. 21, 1975.

 

3.                  "Design of a Traffic Measurement System for Automatic Networks (in spanish)", J. Ramírez‑Angulo and V. Aviles‑Garcia, Second Congress of the Mechanical and Electrical Engineers Society, Mexico City, November 11‑12, session D, 1976.

 

4.                  “Exploration of the Acceptability Region: A New Low Cost Design Centering Procedure", J. Ramírez‑Angulo, IEEE‑MEXICON 82, Mexico City, October 1982.

 

5.                  "Design of SAW Filters with Arbitrary Magnitude and Phase Response Specifications (in spanish)", J. Ramírez‑Angulo, XXV Congress of the Mexican Physics Society, Jalapa, Mexico, November 22‑26, pp. 13, 1982.

 

6.                  "Efficient Non‑Deterministic Design Centering Based on the Concept of Dominant Constraints", J. Ramírez‑Angulo and E. Luder, IEEE International Symposium on Circuits and Systems, Newport Beach, CA., May 2‑4, pp. 546‑549, 1983.

 

7.                  "Circuit Yield Improvement by One Dimensional Exploration of the Acceptability Region", J. Ramírez‑Angulo, 26th Midwest Symposium on Circuits and Systems, Puebla, Mexico, August 15‑16, pp. 477‑480, 1983.

 

8.                  "Fabrication in Mexico of thin Film Hybrid Microcircuits (in spanish)", J. Ramírez‑Angulo, A.Ortiz and J. Fragoso, IEEE‑MEXICON 83, Cuernavaca, Mexico, November 1982.

 

9.                  “Fabrication of Thin Film Resistors and Capacitors (in spanish)", J. Ramírez‑Angulo and A. Ortiz, XXVI Congress of the Mexican Physics Society, Puebla, Mexico, November 1983.

 

10.              "Component Quantization Effects on Continuous Time Filters", J. Ramírez‑Angulo, R. L. Geiger and E. Sánchez‑Sinencio, IEEE International Symposium for Circuits and Systems, Kyoto, Japan, June  5‑7,  pp. 1423‑1426, 1985.

 

 

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11.              "FIRE: A Computer Program to predict the Peformance of Laser Trimmed Film Resistors",  J. Ramírez‑Angulo, R. L. Geiger and E. Sánchez‑Sinencio, 36th Electronics Components Conference, Seattle Washington, May 5‑7, pp. 405‑411, 1986.

 

12.              "A Circuit Theoretical Approach to the Sensitivity Analysis of Laser Trimmed Film Resistors",  J. Ramírez‑Angulo, R. L. Geiger and E. Sánchez‑Sinencio, 1986 IEEE Int. Symposium on Circuits and Systems, San Jose, CA, May 5‑7, pp.1201‑1206, 1986.

 

13.              "A Computer‑Aided  Design Program for Reduction of Total Capacitance in Cascade SC‑Filters", E. Sánchez‑Sinencio, J.Ramírez‑Angulo and R. L. Geiger, 29th Midwest Symposium on Circuits and Systems, Lincoln, NE, August 10‑12, pp. 597‑599, 1986.

 

14.              "A Computer‑Aided Circuit Design Algorithm Based on a Random Direction and Radial Search", J. Ramírez Angulo and E. Sánchez‑Sinencio, 29th Midwest Symposium on Circuits and Systems, Lincoln, NE, August 10‑12, pp.897‑901, 1986.

 

15.              "A Systematic Approach for the Characterization of RC‑distributed Elements", J. Ramírez‑Angulo, E. Sánchez‑Sinencio and R. L. Geiger, IEEE‑MEXICON 86, Guadalajara, Mexico, November 8‑10, pp. 1701‑1704, 1986.

 

16.              "Design of Active Filters for Maximum GB‑variations", J. Ramírez‑Angulo, 30th Midwest symposium on Circuits and Systems, Syracuse, New York, August 17‑18, pp. 781‑784, 1987.

 

17.              "Computer‑Aided Design and Evaluation of New Film Resistor Structures based on a Network Sensitivity Measure", J. Ramírez‑Angulo and R. L. Geiger, IEEE Israel Symposium on Circuits, Systems and Control, Herzliya, Israel, May 30‑June 1, pp. 6.31‑ 6.34, 1988.

 

18.              "Bandpass OTA‑C Filter Structures, Tunability Considerations and Quantization Effects", J. Ramírez‑Angulo and E. Sánchez‑Sinencio, IEEE 2nd Israel Symposium on Circuits, Systems and Control, Herzliya, Israel, May 30‑June 1 pp. 7.21‑7.24, 1988.

 

19.              "A Method to Relax the Design of Active Filters Against Large GB‑variations", J. Ramírez‑Angulo, 1988 IEEE International Symposium on Circuits and Systems, Espoo, Finland, pp. 2415‑2418, June 6‑9, 1988.

 

20.              "Comparison of Biquadratic OTA‑C Filters from the Tuning Point of View", J. Ramírez Angulo and E. Sánchez‑Sinencio, 31th Midwest Symposium on Circuits and Systems, St. Louis, Mi, August 10‑12, pp. 510‑514, 1988.

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21.              "A Program for the Design of Filters with Specifications for Magnitude and Group‑Delay Response", M. Kobe, J. Ramírez‑Angulo and E. Sánchez‑Sinencio, 1988 IEEE‑Region 9 Conference, Mexico City, October 11‑14, 1988.

 

22.              "OTA‑Based Nonlinear Function Approximation", E.Sánchez Sinencio, J. Ramírez‑Angulo and B. Linares‑Barranco, 1989 IEEE International Symposium on Circuits and Systems, Portland, Ore, pp. 2415‑2418, May 8‑11, pp. 96‑99.

 

23.              "Active Compensation of Operational Transconductance Amplifier Filters Using Partial Positive Feedback", J. Ramírez‑Angulo, and  E. Sánchez‑Sinencio, Midwest Symposium on Circuits and Systems, Champaign, Ill., pp. 1206‑1210, August 15‑16, 1989.

 

24.              "Programmable Piecewise‑Linear Function Synthesizers Using Operational Transconductance Amplifiers", J. Ramírez‑Angulo, B. Linares‑Barranco, E. Sánchez‑Sinencio and A. Rodriguez‑Vazquez, 1989 European Conference on Circuit Theory and Design, Brighton, UK, pp. 452‑456, 5‑8 September 1989.

 

25.              "All MOS‑Transistors Continuous‑Time Filters in CMOS‑Technology", B. Linares‑Barranco, E. Seaberg and J. Ramírez‑Angulo, IEEE‑Mexicon 89, Mexico, Sept. 17‑22 1989.

 

26.              "Distributed RC‑Filters With Linearized MOS‑Transistors in MOS‑Technology'', B. Linares‑Barranco, E. Seaberg and J. Ramírez‑Angulo, IEEE‑1990 International Symposium on Circuits and Systems, New Orleans, Lousiana, pp. May 1‑3 1990, pp. 2385‑2388.

 

27.              "A Precision Broadband Voltage Rectifier in CMOS Technology", J. Ramírez‑Angulo,  IEEE‑1990 International Symposium on Circuits and Systems, New Orleans, Lousiana, May 1‑3 1990, pp. 1724‑1727.

 

28.              "Maximum Value of the Base Resistance of Vertical Bipolar Transistors", B. Linares‑Barranco, E. Seaberg and J. Ramírez‑Angulo, IEEE‑1990 International Symposium on Circuits and Systems, New Orleans, Lousiana, May 1‑3 1990, pp. 3182‑3185.

 

29.              “Analog Neural Networks for Real‑Time Constrained Optimization", A. Rodriguez‑Vazquez, R. Dominguez‑Castro, J.L.Huertas, E.Sánchez‑Sinencio, B.Linares‑Barranco and J. Ramírez‑Angulo, IEEE‑1990 International Symposium on Circuits and Systems, New Orleans, Lousiana, May 1‑3 1990, pp. 1867‑1870.

 

30.              “FIESTAII: A PC‑ Filter Educational Synthesis Teaching Aid", J.Ramírez‑Angulo, M. Kobe and E.Sánchez‑Sinencio, 33rd‑ Midwest Symposium on Circuits and Systems, Calgary, Canada, August 12‑14 1990, pp. 504-507.

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31.              “A Current Mode CMOS‑Cellular Neural Network", J. Varrientos, J. Ramírez‑Angulo and E. Sánchez‑Sinencio, 33rd‑ Midwest Symposium on Circuits and Systems, Calgary, Canada, August 12‑14 1990, pp. 277-280.

 

32.              “A Program for the Design of Continuous Time Filters", J. Ramírez-Angulo, M.R. Kobe, E. Sánchez-Sinencio, 1990 IEEE Region 9 Conference, Monterrey Mexico, Oct 1-4, 1990, vol. I, pp. 1-4.

 

33.              “Cellular Neural Networks Implementation: A Current Mode Approach", J.E.Varrientos, J.Ramírez-Angulo and E.Sánchez-Sinencio, Proceedings of IEEE International Workshop on Cellular Neural Networks and their Applications, Budapest Hungary December 16-19, 1990, pp. 216-220.

 

34.              “Current Mode Continuous-Time Filters: Two Design Approaches", M. E. Robinson, J. Ramírez-Angulo and E. Sánchez-Sinencio, 34th Midwest Symposium on Circuits and Systems, Monterey, California, May 14-17, 1991.

 

35.              “OTA Extended Adjustment Range and Linearization  Via Programmable Current Mirrors", W. J. Adams and J. Ramírez-Angulo, 34th Midwest Symposium on Circuits and Systems, Monterey, California, May 14-17, 1991.

 

36.              “High Selectivity, High Frequency Continuous-Time Filters Using Multiple Output OTAs", Jaime Ramírez-Angulo, E. Sánchez-Sinencio and Matthew Howe, 1991 IEEE International Symposium on Circuits and Systems, pp. 1351-1354 Singapore, June 11-14, 1991.

 

37.              “Improvement of Laser Trimmed Film Resistor Stability by Selection of Optimal Trim Paths", J. Ramírez-Angulo, R. Wang and Randall L. Geiger, 1991 IEEE International Symposium on Circuits and Systems, pp. 2188-2191, Singapore, June 11-14 1991.

 

38.              “OTA Extended gm Adjustment Range Via Electronically Programmable Current Mirrors", W. J. Adams and J. Ramírez-Angulo, 1991 IEEE International Symposium on Circuits and Systems, pp. 2553-2556, Singapore, June 11-14 1991.

 

39.              “Circuit implementations of Extended Transconductance Linearization Technique", W.J. Adams and J. Ramírez-Angulo, 1991 European Conference on Circuit Theory and Design, September 2-6, 1991, Copenhagen, Denmark.

 

40.              “Wide gm Adjustment Range, Highly Linear OTA with Linear Programmable Current Mirrors," J. Ramírez-Angulo and I. Grau,  Proceedings of 1992 IEEE International Conference on Circuits and Systems, pp. 1372-1375, San Diego CA, May 10-13 1992.

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41.              "Applications of Composite BICMOS Transistors in Analog Circuits," J. Ramírez-Angulo, M. Deyong and W. J. Adams, Proceedings of 1992 IEEE International Conference on Circuits and Systems, pp. 1262-1266, San Diego CA, May 10-13 1992.

 

42.              “Architectures for Analog VLSI implementation of Neural Networks for Solving Linear Equations with Inequality Constraints," A. Cichocki, J. Ramírez-Angulo and R. Unbehauen, Proceedings of 1992 IEEE International Conference on Circuits and Systems, pp. 1529-1532, San Diego CA, May 10-13 1992.

 

43.              "A Piecewise Linear Function Approximation using Current Mode Circuits," J. Ramírez-Angulo, E. Sánchez-Sinencio and A. Rodriguez-Vazquez, Proceedings of 1992 IEEE International Conference on Circuits and Systems, pp. 2021-2024, San Diego CA, May 10-13 1992.

 

44.              "The folded Gibert Cell: A low-voltage, high performance CMOS multiplier", J. Ramírez-Angulo and Sun Ming-Chen, Proceedings of 35th Midwest Symposium on Circuits and Systems, pp. 20-23, August 9-12, 1992 Washington, D.C.

 

45.              "Modules for a digitally controlled analog signal processor with highly reconfigurable architecture", J. Ramírez-Angulo, R. Paz and R. Parra, Proceedings of 35th Midwest Symposium on Circuits and Systems, pp. 458-461, August 9-12, 1992 Washington, D.C.

 

46.              "A hybrid OTA with very wide adjustement range", M. DeYong and J. Ramírez-Angulo, Proceedings of 35th Midwest Symposium on Circuits and Systems,pp. 953-956, August 9-12, 1992 Washington, D.C.

 

47.              "CMOS cells for analog VLSI Laplace equation solver based on the resistive analogy method", J. Ramírez-Angulo, M. DeYong and Sun Ming-Chen, Proceedings of 35th Midwest Symposium on Circuits and Systems, pp. 597-600, August 9-12, 1992 Washington, D.C.

 

48.              "A BiCMOS Low Distortion Tunable Transconductor for Continuous-Time Filters", M. Ali, M. Howe, E. Sánchez-Sinecio and J. Ramírez-Angulo Proceedings of 35th Midwest Symposium on Circuits and Systems, pp. 571-574, August 9-12, 1992 Washington, D.C.

 

49.              "A BiCMOS current buffer-rectifier", M. Ali, M. Howe, E. Sánchez-Sinencio and J. Ramírez-Angulo Proceedings of 35th Midwest Symposium on Circuits and Systems, August 9-12, 1992 Washington, D.C.

 

50.              "A second generation Linear low-voltage BiCMOS OTA," J. Ramírez-Angulo and K. H. Treece, Proceedings of the 1993 IEEE International Conference on Circuits and Systems, pp. 1172-1175, May 5-7 1993, Chicago Il.

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51.              "High frequency compensated Current-mode ladder filters using multiple output OTAs," J. Ramírez-Angulo and E. Sánchez-Sinencio, Proceedings of the 1993 IEEE International Conference on Circuits and Systems, pp. 1412-1415, May 5-7 1993, Chicago Il.

 

52.              "Low voltage programmable analog FIR Filters using voltage followers and multipliers," J. Ramírez-Angulo and A. Diaz-Sánchez, Proceedings of the 1993 IEEE International Conference on Circuits and Systems, pp. 1408-1411, May 5-7 1993, Chicago Il.

 

53.              "Linearity accuracy and bandwidth Considerations in wideband CMOS voltage amplifiers," J. Ramírez-Angulo, R. Sadkowski and E. Sánchez-Sinencio, Proceedings of the 1993 IEEE International Conference on Circuits and Systems, pp. 1251-1254, May 5-7 1993, Chicago, Il.

 

54.              "Novel Digitally trimmable MOS current mirrors," J. Ramírez-Angulo, Proceedings of the 1993 IEEE International Conference on Circuits and Systems, pp. 974-977, May 5-7 1993, Chicago Il.

 

55.              "A master-slave scheme for tuning the gain of transconductance amplifiers with high absolute accuracy," J. Ramírez-Angulo, Proceedings of the 1993 IEEE International Conference on Circuits and Systems, pp. 1176-1179, Chicago, Il, May 5-7 1993.

 

56.              "Highly Linear Four Quadrant analogue BiCMOS multiplier for +-1.5V", J. Ramírez-Angulo, Proceedings of IEEE 1993 International Symposium on Circuits and Systems, pp. 1467-1470, Chicago, Il, May 5-7 1993.

 

57.              "IDD spectrum and temporal analysis test techniques for VLSI circuits," J. Beasley, H. Ramamurthi, M. DeYong and J. Ramírez-Angulo, Proceedings of the 1993 European Conference on Circuit Theory and Design, pp. 659-664, Davos, Switzerland, August 30 - September 3, 1993.

 

58.              "BiCMOS High Frequency Linear Bandpass-Based Current mode Oscillator for 3V supply Oscillator", J. Ramírez-Angulo and E. Sánchez-Sinencio, Proceedings of the 1993 European Conference on Circuit Theory and Design (ECCTD'93), pp. 1119-1132, Davos, Switzerland, August 30 - September 3, 1993.

 

59.              "iDD Pulse Response Testing of Analog and Digital Circuits," J. S. Beasley, H. Ramamurthy, J. Ramírez-Angulo and M. Deyong, 1993 International Test Conference, pp. 626-634,  October 17-21, Baltimore Ma, 1993.

 

60.              "Use of MOSIS custom designed CMOS and BiCMOS transistor Arrays for teaching VLSI courses", J. Ramírez-Angulo and J. Beasley, Proceedings of 36th Midwest Symposium on Circuits and Systems, Detroit Mi, August 16-18, pp. 1176-1179, 1993.

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61.              "Design and implementation of a digital control for a continuous-time nonrecursive (FIR) filter," A. Martinez, L. Ortiz, A. de Luca, H. Perez and J. Ramírez-Angulo, Proceedings of 36th Midwest Symposium on Circuits and Systems, pp. 280-283, Detroit Mi, August 16-18, 1993.

 

62.              "Continuous Time High Frequency Programmable Nonrecursive Filters," J. Ramírez-Angulo, A. de Luca, and H. Perez-Meana, Proceedings of 36th Midwest Symposium on Circuits and Systems, Detroit Mi, August 16-18, pp. 153-156, 1993.

 

63.              "A Parallel Form Decision Feedback Equalizer," H. Perez-Meana, A. de Luca and J. Ramírez-Angulo, Proceedings of 36th Midwest Symposium on Circuits and Systems, Detroit Mi, August 16-18, pp. 1215-1218, 1993.

 

64.              "Low Voltage BiCMOS Membership Function Circuit Building Block for Analog VLSI Fuzzy Control Implementation," J. Ramírez-Angulo, S. Badruzzamman and J. Coronado, Proceedings of IFIS-93: Industrial Fuzzy Control and Intelligent Systems, pp. 42-46, December 1-3, 1993, Houston, TX.

 

65.              "Two approaches for VLSI current-mode filters based on canonical control structures," J. Ramírez-Angulo and E. Sánchez-Sinencio, IEEE International Symposium on Circuits and Systems, pp. 669-672, London, England,  May 30- June 2, 1994

 

66.              "Analog VLSI implementations of adaptive membership function for fuzzy controllers," J. Ramírez-Angulo, IEEE International Symposium on Circuits and Systems, London, England,  May 30- June 2, 1994

 

67.              "Low Voltage, High Slew Rate Bipolar and BiCMOS op-amp architectures with rail to rail common mode input and output swing capabilities," J. Ramírez-Angulo, 1994 IEEE International Symposium on Circuits and Systems, pp. 743-746, London, England,  May 30- June 2, 1994

 

68.              "Real Time Solution of Laplace equation Using Analog VLSI circuits," J. Ramírez-Angulo, K. Treece and M. DeYong, 1994 IEEE International Symposium on Circuits and Systems, pp. 95-98, London, England,  May 30- June 2, 1994

 

69.              "Current mirrors with low input voltage requirements for built in current sensors," J. Ramírez-Angulo, 1994 IEEE International Symposium on Circuits and Systems, pp. 529-532, London, England,  May 30- June 2, 1994

 

70.              "Novel linear gain programmable Class AB current mirrors with constant bandwidth", J. Ramírez-Angulo, 1994 IEEE International Symposium on Circuits and Systems, pp. 545- 548, London, England,  May 30- June 2, 1994

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71.              "A Programmable 1.8-18MHz, High Q Fully Differential Continuous Time Filter with 1.5V-2V Power supply," J.T. Nabitch, E. Sánchez-Sinencio and J. Ramírez-Angulo, 1994 IEEE International Symposium on Circuits and Systems, pp. 653- 657, London, England,  May 30- June 2, 1994

 

72.              "Current mirrors with low input voltage requirements for built in current sensors," J. Ramírez-Angulo, 37th Midwest symposium on Circuits and Systems, pp. 107-110, Lafayette, LA, August 3-5, 1994

 

73.              "Low Voltage BiCMOS Comparator for Charge Threshold Detection," J. Ramírez-Angulo, G. Gonzalez-Altamirano and A. de Luca, 37th Midwest symposium on Circuits and Systems, pp. 1137-1140, Lafayette, LA, August 3-5, 1994

 

74.              "Low Voltage Current Mode and Voltage Mode Min and Max Circuit Building Blocks for Analog CMOS Fuzzy Processors," 3rd International Conference on Fuzzy logic and Computing, Lizuka, Japan, August 1-3, 1994.

 

75.              "Analog Propose of Adaptive Filter Using All Pass Functions and LMS Approach,"  A. Martinez-Gonzalez, L. Ortiz-Balbuena, H. Perez-Meana, L. Nino de Rivera and J. Ramírez-Angulo, Proceedings of  International Symposium on Information Theory and Applications, Sydney Australia, 20-24 November 1994, pp. 1351-1355.

 

76.              "Design of VLSI Systems at New Mexico State University," J. Ramírez-Angulo, SACNAS Conference,  January 5-9 1995, El Paso, TX.

 

77.              "A BiCMOS Universal Membership Function Circuit," J. Ramírez-Angulo, 1995 IEEE  International Symposium on Circuits and Systems, Seattle, WA, April 30, May 3, 1994, pp.275-278

 

78.              "Current-Mode and Voltage Mode VLSI Fuzzy Processor Architectures," J. Ramírez-Angulo, K. Treece, P. Andrews and T.Choi, 1995 IEEE  International Symposium on Circuits and Systems, Seattle, WA, April 30, May 3, 1994, pp.1156-1159.

 

79.              "Yet another low voltage four quadrant CMOS multiplier," J. Ramírez-Angulo, 38th Midwest Symposium on Circuits and Systems, pp. 405-408, Rio de Janeiro , Brazil, August 13-16, 1995.

 

80.              "OTA-GS filters: The new Face of RC active filters," J. Ramírez-Angulo,and G. Gonzalez-Altamirano, 38th Midwest Symposium on Circuits and Systems, pp. 1329-1332, Rio de Janeiro , Brazil, August 13-16, 1995.

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81.              "Low Supply Voltage OTA architectures Using Floating Gate Transistors, S.C. Choi, and J. Ramírez-Angulo, 38th Midwest Symposium on Circuits and Systems, pp. 158-161, Rio de Janeiro , Brazil, August 13-16, 1995.

 

82.              "Building Blocks of Filter Tuning System Using Analog VLSI Fuzzy Logic Controller," S.C. Choi, E. Sánchez-Sinencio and J. Ramírez-Angulo, 38th Midwest Symposium on Circuits and Systems, pp. 389-392, Rio de Janeiro , Brazil, August 13-16, 1995.

 

83.              "Analog VLSI Implementation of a New Algorithm for Solving Generalized Systems of Linear Equations," N.C. Carneiro, L. Caloba and J. Ramírez-Angulo, 38th Midwest Symposium on Circuits and Systems, pp. 965-968, Rio de Janeiro , Brazil, August 13-16, 1995.

 

84.              "A new Algorithm for Analog Matrix Inversion," N.C. Carneiro, L. Caloba and J. Ramírez-Angulo, 38th Midwest Symposium on Circuits and Systems, pp. 401-404, Rio de Janeiro , Brazil, August 13-16, 1995.

 

85.              "An idd Transient Analysis Technique for Defect Detection in Digital Integrated Circuits," J. Beasley, J. Ramírez-Angulo and R. Steiner, 38th Midwest Symposium on Circuits and Systems, pp. 286-289, Rio de Janeiro Brazil, August 13-16, 1995.

 

86.              "Comparative study of publications of Mexico listed in Science Citation Index,"(in spanish), J. Ramírez-Angulo, VI Annual Meeting of the Researchers of the state of Chihuahua, Chihuahua City, Mexico, December 1-3 ,1995

 

87.              "Continuous Time Adaptive Filter Structure," L. Ortiz-Balbuena, A. Martinez-Gonzalez, H. Perez-Meana, L. Nino de Rivera and J. Ramírez-Angulo, IEEE ICASP International Conference on Acoustics, Speech and Signal Processing, pp. 1061-1064, Detroit, Mi. May 1995.

 

88.              "Sistemas Analogicos VLSI," J. Ramírez-Angulo, Electro 85, (Plenary Talk), 23-27 Octubre 1995

 

89.              "Implementation of VLSI analog adaptive filters," A. Diaz-Sánchez and J. Ramírez-Angulo, Proceedings of IEEE Conielecomp, Puebla, Mexico, February 28-March 1, 1996

 

90.              "High Speed IDDQ Current Sensors for VLSI System Testing," J. Ramírez-Angulo and G. González-Altamirano, 1996 IEEE International Symposium on Circuits and Systems, Atlanta, Georgia, May 8-12, 1996, pp. I-389-392.

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91.              "Low Voltage continuous time filters with OTAs and gain stages," J. Ramírez-Angulo and G. González-Altamirano, 1996 IEEE International Symposium on Circuits and Systems, Atlanta, Georgia, May 8-12, 1996, pp. II 493-496

 

92.              "A +-0.75V BiCMOS multiplier with rail-rail input signal swing", J. Ramírez-Angulo, 1996 IEEE International Symposium on Circuits and Systems, Atlanta, Georgia, May 8-12, 1996, pp. 242-245.

 

93.              "Analog VLSI Fuzzy Processor Architectures Based on Multiple-input Floating Gate Transistors," J. Ramírez-Angulo, V. Quintana, S.C.Choi, Proc. of 1996 World Automation Congress, Montpellier, France, May 27-30, 1996, pp. 539-544.

 

94.              “Design and implementation of VLSI Voltage Mode Adaptive filters," A. Diaz-Sánchez and J. Ramírez-Angulo, 1996, Midwest Symposium on Circuits and Systems,Ames Iowa, August 11-13, 1996

 

95.              "A novel Slew-Rate Enhancement Technique for One Stage Operational Amplifiers," J. Ramírez-Angulo, Midwest Symposium on Circuits and Systems, Ames Iowa, Aug. 11-13 1996

 

96.              “High Speed Digital VLSI Fuzzifier," J. Ramírez-Angulo, J. Zrilic,  A. Beltran, Midwest Symposium on Circuits and Systems, August 11-13, Ames Iowa, 1996

 

97.              "A Compact High Frequency Differential Analog Adder," A. Diaz-Sánchez and J. Ramírez-Angulo, Midwest Symposium on Circuits and Systems, Ames Iowa, August 11-13 1996

 

98.              "Ultracompact Low-voltage Analog CMOS Multiplier Using Multiple Input Floating Gate Transistors, J. Ramírez-Angulo, 1996 European Solid State Circuits Conference, pp. 99-103.

 

99.              "Fast Sample Data Wavelet Transform CMOS VLSI implementation," G. Gonzalez-Altamirano, A. Diaz-Sánchez and J. Ramírez-Angulo, Midwest Symposium on Circuits and Systems, Ames Iowa, August 11-13 1996

 

100.          "A new Universal Analog Fuzzifier Based on Operational Transconductance Multiplier," P. Saavedra, J. Ramírez-Angulo and J. Zrilic, NASA URC Technical Conference on Education Space, Autonomy, Earth and Environment, Feb. 16-19, 1997

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101.          "Various Hardware Implementations of Membership function generators," P. Saavedra, D.G. Zrilic, J. Ramírez-Angulo and B. Yuan, NASA URC Technical Conference on Education Space, Autonmy, Earth and Environment, Feb. 16-19, 1997, pp. 849-855

 

102.          "Hardware Implementation of Memebership Function Look-up table Approach," T. Peterson, D. Zrilic and J. Ramírez-Angulo, B. Yuan NASA URC Technical Conference on Education Space, Autonmy, Earth and Environment, Feb. 16-19, 1997, pp. 579-580

 

103.          "Piecewise linear membership function generator- Divider Approach," R. Hart, G. Martinez, B. Yuan, D. Zrilic and J. Ramírez-Angulo, NASA URC Technical Conference on Education Space, Autonmy, Earth and Environment, Feb. 16-19, 1997, pp. 325-330

 

104.          "Modeling Multiple-Input Floating Gate Transistors for Analog Signal Processing," J. Ramírez-Angulo, G. Gonzalez-Altamirano and S.C. Choi, IEEE International Symposium on Circuits and Systems, Hong Kong, June 9-12 1997.

 

105.          "A Novel Sample-Data Adaptive Filter," A. Diaz-Sánchez and J. Ramírez-Angulo, IEEE International Symposium on Circuits and Systems, Hong Kong, June 9-12 1997.

 

106.          "A Current-Mode Continuous Time Adaptive Filter," A. Diaz-Sánchez and J. Ramírez-Angulo, 40th Midwest Symposium on Circuits and Systems, Santa Barbara, CA, August 3-6, 1997.

 

107.          "New Analog Current-mode/Voltage-Mode Fuzzifier with Continuously Adjustable Parameters," J. Ramírez-Angulo, Jorge Zrlici, Patricias Saavedra and Antonio Lopez, 40th Midwest Symposium on Circuits and Systems, Santa Barbara, CA, August 3-6, 1997.

 

108.          "A new Programmable Logic Family Using Multiple-Input Floating Gate Transistors," J. Ramírez-Angulo and G. Gonzalez-Altamirano, 40th Midwest Symposium on Circuits and Systems, Santa Barbara, CA, August 3-6, 1997, pp. 354-357

 

109.          "A continuous-time Analog Median Filter," Alejandro Diaz-Sánchez, J. Ramírez-Angulo and Antonio Lopez. IEEE-NSIP 97, McKinack Island, Michigan, Sept. 8-10, 1997

 

110.          "An analog Approximation to median filtering," Alejandro Diaz-Sánchez, J. Ramírez-Angulo and Antonio Lopez, ELECTRO'97, pp. 111-114, Chihuahua, Mexico, October 27-31 !997, .

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111.          "A Current-mode continuous time adaptive filtering," Alejandro Diaz-Sánchez, and J. Ramírez-Angulo, ELECTRO'97, pp. 106-110, Chihuahua, Mexico, October 27-31 1997.

 

112.          "Building Blocks of Linear and Nonlinear Circuits Based on Operational Transconductance Amplifiers," Anthony Esquibel, Spyros Andreou and J. Ramírez-Angulo, Nasa URC Technical Conference 98, February 22-26, 1998, Hunstsville Alabama,

 

113.          "Novel Programmable Linear and Nonlinear Oscillator Architectures," Catharine Rice and J. Ramírez-Angulo, Nasa URC Technical Conference 98, February 22-26, 1998, Hunstsville Alabama,pp. 618-622

 

114.          "An example of Mixed Processing of Delta Sigma Modulated Pulse Stream," Catharine Rice and J. Ramírez-Angulo, Nasa URC Technical Conference 98, February 22-26, 1998, Hunstsville Alabama,

 

115.          “Low Voltage Analog Modular expandable VLSI fuzzy inference engine,@ J. Ramírez-Angulo and J. Zrilic, World Automation Conference 98, May 10-14 98 Anchorage, Alaska, pp. 815-821.

 

116.          “Feedforward Robust Fuzzy Control,@ D. Zrilic, E. Kosmatopoulus and J. Ramírez, WAC'98  Anchorage Alaska, May 98, pp. 213-218.

 

117.          "High Performance Cell for Solving Real Time Field Problems Using the Resistive Grid Method," N.C. Carneiro and J. Ramírez-Angulo, 1998 IEEE International Conference on Circuits and Systems, May 31 - June 3, 1998, Monterrey, CA.

 

118.          "Analog  Building  Blocks  for a Sampled Data Fast Wavelet Transform CMOS VLSI implementation," G. Gonzalez-Altamirano and J. Ramírez-Angulo, 1998 IEEE International Conference on Circuits and Systems, May 31 - June 3, 1998, Monterrey, CA.

 

119.          ”An Adaptive Cell for Resistive Grid Applications,” N. Carneiro and J. Ramírez-Angulo, Second International  Workshop on Design of Mixed-Mode Integrated Circuits and Systems, Guanajuato Mexico, July 27-29 1998

 

120.          “A High Speed Analog Median Filter in CMOS Technology,” A. Diaz-Sánchez, J. Ramírez-Angulo, A. Lopez and E. Sánchez-Sinencio, IEE-ICECS´98,  September 7-10 1998, Lisboa Portugal pp. 381-384.

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121.          “A low power analog median filter,” A. Diaz-Sánchez and J. Ramírez-Angulo, IEEE Second International Workshop on Design of Mixed Mode Integrated Circuits and Applications, Guanajuato, MX July 27-29, 1998, pp. 49-51

 

122.          “A Fuzzy Processor Based on Symmetric Triangular Membership Functions, “S.M. Abdel-Hafeez, S. Straks and J. Ramírez-Angulo, NASA-URCTC-98, Hunstville, Al, Feb. 98 pp. 618-622, pp. 237-242.

 

123.          "Novel Low Power and Constant gm operational amplifier using multiple-input floating-gate transistors," S.C Choi and J. Ramírez-Angulo. IEEE Analog VLSI Workshop

 

124.          “Generador de Funciones de Pertenencia para Procesado Difuso adaptivo,” A. Lopez-Martin, J. Ramírez-Angulo and A. Carlosena SAAEI98, Pamplona, Spain, September 16-18 1998.

 

125.          “Compact Low-Voltage Analog Defuzzifier Using Multiple-Input Floating-Gate Transistors, “ J. Ramírez-Angulo, S.C. Choi and D. Zrilic, Proceedings DCIS'98 Madrid November 17-20 1998, pp. 332-337.

 

126.          “Linear Amplifiers with very high Gain-Bandwidth Product, “ J. Ramírez-Angulo.1999 IEEE International Symposium on Circuits and Systems, Orlando Fl, May 30-June 2, pp. II-620-623

 

127.          “CMOS op-amps for a single supply close to a threshold voltage and with almost rail-to-rail signal swing, “ J. Ramírez-Angulo, A Torralba, R.G. Carvajal and J.Tombs 1999 IEEE International Symposium on Circuits and Systems, Orlando Fl, May 30-June 2, 99, pp. II-408-411.

 

128.          “A comparison of architectures for a programmable fuzzy chip, “ T. Lund,A.Torralba, R.G. Carvajal and J .Ramírez-Angulo, 1999 IEEE Internationa Symposium on Circuits and Systems, Orlando Fl, May 30-June 2, 99, pp. V-623-626.

 

129.          D/A Conversion Based on Multiple Input Floating Gate MOST, A.J. Lopez-Martin, J. Ramírez-Angulo and a. Carlosena, Proceedings, Midwest Symposium On Circuits and Systems, August 8-11, 1999, Las Cruces, NM, pp. 149-152.

 

130.          “An adaptive Cell for resistive grid applications, “ N. Carneiro and  J. Ramírez-Angulo, Proceedings, Midwest Symposium On Circuits and Systems, August 8-11, 1999, Las Cruces, NM, pp. 304-308.

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131.          “A Compact Mixed-mode Block Fuzzifier, “ P. Saavedra,  J. Ramírez-Angulo and J. Zrilic,  Proceedings, Midwest Symposium On Circuits and Systems, August 8-11, 1999, Las Cruces, NM, pp. 494-496.

 

132.          “A tunable low-voltage Transconductor and its application to HF Gm-C Filter Design,” F. Munoz, R.G. Carvajal and J. Ramírez-Angulo, Proceedings, Midwest Symposium On Circuits and Systems, August 8-11, 1999, Las Cruces, NM, pp. 826-829.

 

133.          “Versatile CMOS and BiCMOS Linear Transconductor Circuits,” A. Lopez-Martin, J. Ramírez-Angulo and A. Carlosena, Proceedings, Midwest Symposium On Circuits and Systems, August 8-11, 1999, Las Cruces, NM, pp. 1024-1027.

 

134.          “D/A Conversion Based on Multiple Input Floating Gate MOST, “ A.J. Lopez-Martin, J. Ramírez-Angulo and a. Carlosena, Proceedings, Midwest Symposium On Circuits and Systems, August 8-11, 1999, Las Cruces, NM, pp. 149-152

 

135.          “Architectures for a programmable fuzzy logic chip. A case study”. T-Lund, A.Torralba, R.G.Carvajal, J.Ramírez-Angulo.Proc. of the XIV Design of Circuits and Integrated Systems Conference, DCIS’99, Palma de Mallorca (Spain), Nov. 16-19, 1999 pp.473-476. 

 

136.          "Two novel low voltage transconductors for VHF applications”. F.Muñoz, A.Torralba, R.G.Carvajal, J.Ramírez-Angulo, Proc. of the XIV Design of Circuits and Integrated Systems Conference, DCIS’99, Palma de Mallorca, (Spain) Nov. 16-19 1999, 533-537.

 

137.          "Integration of multiple-input floating-gate transistors into a top-down CAD design flow,” J.Tombs, J.Ramírez-Angulo, R.G.Carvajal, A.Torralba, Proc. of the XIV Design of Circuits and Integrated Systems Conference, DCIS’99, (Spain) Palma de Mallorca, Nov. 16-19 1999, pp. 767-771

 

138.          "VHF Tunable CMOS Low-Voltage Linear Transconductor and its application to HF Gm-C filter design,” F.Muñoz, A.Torralba, R.G.Carvajal, J.Ramírez-Angulo, Proc. of the XIV Design of Circuits and Integrated Systems Conference, DCIS’99, Palma de Mallorca, (Spain) Nov. 16-19 1999,  451-454.

 

139.          “Compact Low Voltage Analog Defuzzifers Using Multiple Input Floating Gate Transistors, J. Ramírez-Angulo, S.C. Choi, and J. Zrilic," 2000 World Automation Conference, June 11-16, 2000, Maui, Hawai, pp. ISCCI-9963.

 

140.          “Two new VHF tunable CMOS Low-Voltage Linear Transconductor and its Application to HF gm-C filter Design," F. Munoz, A. Torralba, J. Toms, and J. Ramírez-Angulo, IEEE International Symposium on Circuits and Systems (ISCAS) 2000, May 28-31, Geneve, Switzerland, pp. V-173-176

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141.          "Floating Gate Based Tunable Low-Voltage Linear Transconductor and its application to HF,". Munoz, A. Torralba, J. Toms, and J. Ramírez-Angulo, IEEE International Symposium on Circuits and Systems (ISCAS) 2000, May 28-31, Geneve, Switzerland, pp. IV-465-468.

 

142.          "High Speed High Precision Voltage Mode MIN/MAX Circuits in CMOS Technology, " R.G. Carvajal, J. Ramírez-Angulo and J. Tombs, IEEE International Symposium on Circuits and Systems (ISCAS) 2000 , May 28-31, Geneve, Switzerland, pp. V-13-16.

 

143.          “A 1.5V linear transconductor with wide bandwidth ands wide input and output signal swings,"  J. Ramírez-Angulo, R.G. Carvajal,  A. Torralba and j. Martinez-Heredia, IEEE International Symposium on Circuits and Systems (ISCAS) 2000, May 28-31, Geneve, Switzerland, pp. V-161-164

 

144.          "A Fully Parallel CMOS Analog Median Filter, " A. Diaz-Sánchez, J. Ramírez-Angulo, A. Lopez and E. Sánchez-Sinencio,” IEEE International Symposium on Circuits and Systems (ISCAS) 2000, May 28-31, Geneve, Switzerland, pp. II-593-596.

 

145.          "1.4V Supply, wide swing, high frequency CMOS Analogue multiplier with high current efficiency,"  J. Ramírez-Angulo, R.G. Carvajal, and . J. Martinez-Heredia, IEEE International Symposium on Circuits and Systems (ISCAS) 2000, May 28-31, Geneve, Switzerland, pp. V-533-536.

 

146.          “Very Low-Voltage Class AB CMOS and Bipolar Precision Current rectifiers," J. Ramírez-Angulo,” R.G. Carvajal, J. Tombs and A. Torralba, IEEE International Symposium on Circuits and Systems (ISCAS) 2000, May 28-31, Geneve, Switzerland, pp. III-5-9.

 

147.          “Modular Expandable Analog Defuzzifers Using Multiple Input Floating Gate Transistors," J. Ramírez-Angulo,        S.C. Choi, and J. Zrilic, IEEE International Symposium on Circuits and Systems (ISCAS) 2000, May 28-        31, Geneve, Switzerland, pp. V-381-384.

 

148.          "An Analog Median Filter for Low Power Applications,"  A. Diaz-Sánchez and J. Ramírez-Angulo, IEEE 43drd Midwest Symposium on Circuits and Systems. Lansing, MI, August 8-11, 2000, session WA6.

 

149.          "Analog VLSI Weighted Median Filters,"  A. Diaz-Sánchez and J. Ramírez-Angulo, IEEE 43drd Midwest Symposium on Circuits and Systems. Lansing, MI, August 8-11, 2000, session WA6

 

150.          “Low Voltage High Performance CMOS Current Mirrors,"  J. Ramírez-Angulo, R.G. Carvajal and A. Torralba, IEEE 43drd Midwest Symposium on Circuits and Systems. Lansing, MI, August 8-11, 2000, Session WA6.

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151.          “Low supply voltage high performance CMOS current mirror with low input and output voltage requirements, "  J. Ramírez-Angulo, R.G. Carvajal and A. Torralba, IEEE DCIS’2000 Design of Circuits and Integrated Systems  2000,  Montpelier, France, November 22-24th, ,2000.

 

152.          “ A four quadrant 1.4V supply, wide swing, high frequency CMOS analogue multiplier with high current efficiency, "  J. Ramírez-Angulo, R.G. Carvajal, A. Torralba and J. Martinez-Heredia. IEEE DCIS’2000 Design of Circuits and Integrated Systems  2000,  Montpelier, France, November 22-24th, ,2000.

 

153.          “ A 1.1V Low-Power Sigma-Delta Modulator for 14b, 16KHz A/D conversion, "  F. Munoz, A.P. Vega-Leal,  R.G. Carvajal, A. Torralba and J. Ramirez-Angulo. IEEE DCIS’2000 Design of Circuits and Integrated Systems  2000,  Montpelier, France, November 22-24th, ,2000.

 

154.          “ Low Voltage class AB output stages for CMOS op-amps using floating gate capacitors, "  R.G. Carvajal, A. Torralba and J. Ramirez-Angulo, J. tombs and F. Munoz. IEEE DCIS’2000 Design of Circuits and Integrated Systems  2000,  Montpelier, France, November 22-24th, ,2000

 

155.          “ Class AB output stages for low-voltage CMOS op-amps with accurate quiescent current control by means of dynamic biasing, "  A. Torralba, R.G. Carvajal, J. Ramirez-Angulo, J. Martinez-Heredia and A.P. Vega-Leal. IEEE DCIS’2000 Design of Circuits and Integrated Systems  2000,  Montpelier, France, November 22-24th, ,2000

 

156.          “ High Speed Compact CMOS Circuits for continuous-time linear weighted voltage addition, "  J. Ramírez-Angulo. IEEE DCIS’2000 Design of Circuits and Integrated Systems  2000,  Montpelier, France, November 22-24th, ,2000.

 

157.          "Low Voltage Continuous Time Tunable High Frequency Filters Based on Floating Gates and Dynamic Biasing Techniques," F. Munoz, A. Torralba, J. Toms, J. Ramirez-Angulo, 2001 Southwest Symposium on Mixed-Signal Design  Austin, TX February 25-27, 2001

 

158.          "Compact CMOS Circuits for High Speed continuous-time linear weighted voltage addition," Jaime Ramirez-Angulo and Francisco Ledesma, IEEE International Symposium on Circuits and Systems, May 6-9, 2001 Sidney Australia, pp. I-707-I-710.

 

159.          "A new Class AB differential Input stage for implementation of low voltage high slew rate op-amps and linear transconductors,"  J. Ramirez-Angulo, R. Gonzalez-Carvajal, A. Torralba and Carlos Nieva, IEEE International Symposium on Circuits an Systems, May 6-9,  2001 Sidney Australia, pp. I-671-I-674.

 

160.          "A 1.1V Low-Power sigma-delta Modulator for 14-b 16KHz A/D Conversion,"  F. Munoz, A.P. VegaLeal,  R. G. Carvajal, A. Torralba, J. Tombs and J. Ramírez-Angulo,  IEEE International Symposium on Circuits an Systems, May 6-9, 2001 Sidney Australia, I-619-I-622

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161.          “Low voltage class AB output stages for CMOS op-amps using floating capacitors,"  R. G. Carvajal, A. Torralba, J. Tombs and J. Ramírez-Angulo, F. Munoz,  IEEE International Symposium on Circuits an Systems, May 6-9, 2001, Sidney Australia, I-13-I-16.

 

162.          "Some techniques for low-voltage operation of continuous-time analog CMOS circuits," Jaime Ramirez-Angulo, 2nd Dallas IEEE Workshop on Low-Voltage Mixed-signal Circuits and  systems, March 26th 2001, Dallas, TX

 

163.          "Innovative Built-In Self-Test Schemes for On-Chip Diagnosis, Compliant with the IEEE 1149.4 Mixed-Signal Test Bus Standard: Time to Market-Reduction," Gladys Omayra Ducoudray Acevedo, Jaime Ramirez-Angulo Proceedings of the Third IEEE International  Conference on Devices, Circuits and Systems (ICCDCS) , February 11-12, 2001 Cancun, Mexico, pp. 131-134

 

164.          “An analog median filter with Feedforward adaptation. “  Alejandro Díaz-Sánchez  and Jaime Ramírez-Angulo, 45th Midwest Symposium on Circuits and Systems, Dayton, Ohio, August 14-17 2001

 

165.          “Built In self test Scheme for on-Chip Diagnosis compliant with IEEE 1149.4 Mixed-signal test bus standard,”  G. O.  Ducoudray-Acevedo and Jaime Ramirez-Angulo, SAAEI’01, Matanzas Cuba 17-19 Sept. 2001, SP2-IV

 

166.          “Effect of restrained neighborhood in analog median filters” A. Diaz-Sanchez and  Jaime Ramirez-Angulo, SAAEI’01, Matanzas Cuba 17-19 September 2001

 

167.          “New Architectures of class AB operational amplifiers for low-voltage low-power applications,”  Jaime Ramirez-Angulo1,, Ramon Gonzalez-Carvajal2, Antonio Torralba2 and C. Nieva, SAAEI’01, Matanzas Cuba 17-19 Sept. 2001

 

168.          “Analog Adaptive Median Filters for Impulse Noise Removal,”Alejandro Díaz-Sánchez, Jaime Ramírez-Angulo, Electro 2001, pp. 287-290, October 22-26, 2001 Chihuahua, Mexico.

 

169.          “Behavior Analysis and Testing of Resistive Opens in the clock Circuitry of Memory Elements, “ Antonio Zenteno, Victor Champac and Jaime Ramirez-Angulo  Proceedings of 3rd Latin American Test Workshop, Montevideo, Uruguay, February 10-13th, 2002

 

170.          Gladys Omayra Ducoudray Acevedo, Jaime Ramirez-Angulo, “ VDDQ: A Buitl In Selft-test Scheme for Analog On-chip Diagnosis Compliant   with the IEEE with the 1149.4 Mixed-Signal Test Bus Standard.,Fourth IEEE International Caracas Conference on Devices, Circuits and Systems, Aruba, April 17-19, 2002, pp. 1026-1 1026-4

 

171.           ”A 1.1V Very Low-Power SD Modulator For 14-b 16KHz A/D Conversion Using A Novel Class AB Transconductance Amplifier,”. J. Galan , A. P. VegaLeal1, F. Muñoz1, R. G. Carvajal 1, A. Torralba 1, J. Tombs1 and  J. Ramírez-Angulo, 2002 IEEE International Symposium on Circuits and Systems, May 26-29, 2002, Scottsdale, AZ pp. II-616-II-619

 

172.          “Comparison of two Schemes for  Continuous-time sub-volt Op-amp Operation,” Jaime Ramirez-Angulo, Antonio Torralba and Ramon Gonzalez-Carvajal, 2002 IEEE International Symposium on Circuits and Systems, May 26-29, 2002, Scotttsdale, AZ. pp.I-305 I-308

 

 

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173.          “The Multiple Input Linear Weighted Differential Amplifier:  a New Versatile Analog Circuit Building Block ,” Jaime Ramirez-Angulo and Francisco Ledesma, 2002 IEEE International Symposium on Circuits and Systems, May 26-29, 2002, Scottsdale, AZ, pp. III-747-750

 

174.          “Low-Power Low-Voltage Class-AB Linear OTA For HF Filters With A Large Tuning Range,” J.A.Galán2, R.G. Carvajal1, F.Muñoz1, A.Torralba1, J.Ramírez-Angulo, 2002 IEEE International Symposium on Circuits and Systems, May 26-29, 2002, Scottsdale, AZ pp. II-9-II-12

 

175.          “The Flipped Voltage Follower: A useful cell for low-voltage low-power circuit design.” J.Ramírez-Angulo2, R.G.Carvajal1,, A.Torralba1, J. Galan1, A. P. Vega-Leal1, and J. Tombs, 2002 IEEE International Symposium on Circuits and Systems, May 26-29, 2002, Scottsdale, A,  pp. II-615-II618

 

176.          A Simple technique to significantly enhance slew rate and bandwidth of one-Stage cmos operational amplifiers,” Jaime Ramirez-Angulo and Michael Holmes, 2002 IEEE International Symposium on Circuits and Systems, May 26-29, 2002, Scottsdale, A. pp. II-II-835-II-838.

 

177.          “Innovative Built-in self-test Scheme for on-chip Diagnosis, Compliant With the IEEE 1149.4 Mixed-signal Test Bus Standard, “ Gladys Omayra Ducoudray Acevedo , Jaime Ramirez-Angulo, , 2002 IEEE International Symposium on Circuits and Systems, May 26-29, 2002, Scottsdale, Az., pp. I-148-I-152

 

178.          Compact Continuous-time analog rank-order Filter Implementation in CMOS technology,” Jaime Ramírez-Angulo, Chad Lackey and Alejandro Díaz-Sanchez,, 2002 IEEE International Symposium on Circuits and Systems, May 26-29, 2002, Scottsdale, Az, pp. V-65-V-68

 

179.           Low-power low-voltage analog electronic circuits using the flipped voltage follower, .” J.Ramírez-Angulo2, R.G.Carvajal1,, A.Torralba1, J. Galan1, A. P. Vega-Leal1, and J. Tombs,  2002 International Symposium on Industrial Electronics, L’Aquila, Italy July 8-11, 2002.

 

180.          “Comparison of New and Conventional Low Voltage Current Mirrors, “ F. Ledesma, J. Ramirez-Angulo and R, 2002 IEEE Midwest Symposium on Circuits and Systems, Tulsa, OK, Aug. 4-7 2002, pp. II-49-52

 

181.          “A new Family of low voltage circuits based on quasi-floating gate transistors, “ C. Urquidi J. Ramirez-Angulo , 2002 IEEE Midwest Symposium on Circuits and Systems, Tulsa, OK, Aug. 4-7 2002, pp. I-93-96

 

182.          “On-chip iDD pulse response method using a high speed dynamic current sensor, “ G Omaira Ducoudray and  J. Ramirez-Angulo, 2002 IEEE Midwest Symposium on Circuits and Systems, Tulsa, OK, Aug. 4-7 2002.pp. II-282-285.

 

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183.          “New Architectures of Class AB  CMOS and BiCMOS operational amplifier using local common mode feedback, “ M. Holmes,  J. Ramirez-Angulo and R, 2002 IEEE Midwest Symposium on Circuits and Systems, Tulsa, OK, Aug. 4-7 2002

 

184.          “Class-AB Linear OTA For Low-Power Low-Voltage HF Filters With A Large Tuning Range,” Juan Antonio Gomez Galan, Ramon Gonzalez Carvajal, Fernando Muñoz Chavero, Antonio Torralba , DCIS 2002 Nov. 19-22, Santander, Spain,

 

185.          “Low voltage Class-AB Output Stages for CMOS Op-Amps,” R. Carvajal, A. Torralba, J. Ramirez-Angulo, J. Tombs, F. Muñoz, ESSCIRC’02, September 24-26, Florence, Italy

 

186.          A New Compact Low-Power High Slew Sate Class AB CMOS Buffer, “A.Torralba, R.G.Carvajal, J. Galán, and J.Ramírez-Angulo, ISCAS 2003, May 25-28, Bangkok, Thailand

 

187.          “A Low-Power Low-Voltage OTA-C Sinusoidal Oscillator with more than two decades of Linear Tuning Range, “ J.Galán, R.G. Carvajal1, F.Muñoz, A.Torralba, J.Ramírez-Angulo ISCAS 2003, May 25-28, Bangkok, Thailand

 

188.          “New output stage for low supply voltage, high-performance CMOS current mirrors, “ A.Torralb1, R.G. Carvajal, F. Muñoz and J. Ramírez-Angulo, ISCAS 2003, May 25-28, Bangkok, Thailand

 

189.          “New low-power low-voltage differential class-AB OTA for SC circuits,”  G. Carvajal, J. Galán, J. Ramírez-Angulo and A. Torralba, ISCAS 2003, May 25-28, Bangkok, Thailand

 

190.          “Sub-volt supply analog circuits based on quasi-floating gate transistors,” Jaime Ramirez-Angulo, Carlos Urquidi, Ramon Gonzalez-Carvajal and Antonio Torralba ISCAS 2003, May 25-28, Bangkok, Thailand

 

191.          “Low-Voltage Closed-Loop Amplifier Circuits Based on Quasi-Floating Gate Transistors,”  Jaime Ramirez-Angulo, Antonio J. Lopez-Martin and Ramon G. Carvajal, ISCAS 2003, May 25-28, Bangkok, Thailand

 

192.          “Low Voltage Low-Power Wideband CMOS Current Conveyors Based on The Flipped Voltage Follower,” Antonio J. Lopez-Martin, Jaime Ramirez-Angulo, and Ramon G. Carvajal, ISCAS 2003, May 25-28, Bangkok, Thailand

 

193.          “A Novel Design Technique for Very Low-Voltage MOS Translinear Circuits,”  Antonio J. Lopez-Martin, Alfonso Carlosena and Jaime Ramirez-Angulo, ISCAS 2003, May 25-28, Bangkok, Thailand

 

194.          “New Very Compact Continuous-Time Low-Voltage Analog Rank-Order Filter Architecture, “ Jaime Ramírez-Angulo1 , R. Gonzalez-Carvajal and Gladys Omayra Ducoudray , ISCAS 2003, May 25-28, Bangkok, Thailand

 

195.          “Extremely Low Supply Voltage Circuits Based on Quasi-Floating Gate Supply Voltage Boosting”, Fernando Munoz, Antonio Lopez-Martin, Ramon G. Carvajal, Jaime Ramirez-Angulo, A.Torralba, Meghraj Kachare and B. Palomo , , ISCAS 2003, May 25-28, Bangkok, Thailand

 

196.          “A New 1.5V Linear Transconductor with High Output Impedance in a Large Bandwidth,” A.Torralba, J. Martmnez-Heredia, R.G.Carvajal and J.Ramirez-Angulo, , ISCAS 2003, May 25-28, Bangkok, Thailand

 

197.          “A high-speed Dynamic Current Sensor for iDD Test Based on the Flipped Voltage Follower, “  Gladys Omayra Ducoudray, Ramon González-Carvajal, Jaime Ramírez-Angulo, SSMSD February 23-25 2003, Las Vegas, Nevada

 

198.          A New Power Efficient Fully Differential Low Voltage Two Stage Op-Amp Architecture ,” J. Ramírez-Angulo S. Thoutam G.O. Ducoudray and R.G. Carvajal, Proceedings of the VLSI'03 conference : June 23-26, 2003, pp. 87-91, Las Vegas, Nevada, USA.

 

199.          “Highly Linear Wide Input Range CMOS OTA Architectures  Operating in Subthreshold and Strong Inversion,”  J. Ramirez-Angulo, C. Durbha, G. O. Ducoudray-Acevedo and R. G. Carvajal, VLSI'03: June 23-26, 2003,pp. 345-350,  Las Vegas, Nevada, USA.

 

200.          “Low Voltage Wide gm Adjustment Range Highly Linear BiCMOS OTA,” J. Ramírez-Angulo , C. Durbha,  G. O. Ducoudray-Acevedo and R.G. Carvajal  11th Annual NASA Symposium on VLSI Design , Coeur d’Alene Idaho May 28-29, 2003

 

201.          “A 1.5V, 8-BIT, 10MS/S CMOS Pipeline Analog-to-Digital Converter". B. Palomo, F. Muñoz, R.G. Carvajal, A. Torralba  and J. Ramírez-Angulo, XVIII Conference on Design of Circuits and Integrated Systems DCIS 2003, November 18-21, 2003, Ciudad Real, Spain

 

202.           "New low-voltage high-gain differential OTA for SC circuits" R.G. Carvajal, B. Palomo, A. Torralba, F. Muñoz and J. Ramírez-Angulo, XVIII Conference on Design of Circuits and Integrated Systems DCIS 2003, November 18-21, 2003, Ciudad Real, Spain.

 

203.          "A Simple Alternative to Switched-Op-amps or Voltage Doublers For Very Low Voltage SC Circuits". F. Muñoz, J. Ramírez-Angulo, A. Lopez-Martin , R.G. Carvajal, A.Torralba and B. Palomo, XVIII Conference on Design of Circuits and Integrated Systems DCIS 2003, November 18-21, 2003, Ciudad Real, Spain

 

204.          "New low-power low-voltage differential class-AB OTAs for SC circuits". Ramon Carvajal, Juan Galan, Jaime Ramirez-Angulo, Antonio Torralba and Bernardo Palomo, XVIII Conference on Design of Circuits and Integrated Systems DCIS 2003, November 18-21, 2003, Ciudad Real, Spain

 

205.          "A Novel Technique for Very Low Voltage Rail-to-Rail CMOS Track-and-Hold Circuits". Jaime Ramirez-Angulo,Antonio J. López-Martín, Ramón G. Carvajal and Chad Lackey, XVIII Conference on Design of Circuits and Integrated Systems DCIS 2003, November 18-21, 2003, Ciudad Real, Spain

 

206.          "Low-voltage CMOS four quadrant multipliers based on Flipped voltage followers". Jaime Ramirez-Angulo, Shanta Thoutam, Antonio Lopez-Martin and Ramon G. Carvajal, XVIII Conference on Design of Circuits and Integrated Systems DCIS 2003, November 18-21, 2003, Ciudad Real, Spain

 

207.          "A Low-Voltage Wide Tuning Range gm-C VCO Using A Class-AB Linear OTA". Juan Galan,Ramom G.  Carvajal, Fernando Muñoz, Antonio Torralba, Jaime Ramirez-Angulo and  Marta Laguna, XVIII Conference on Design of Circuits and Integrated Systems DCIS 2003, November 18-21, 2003, Ciudad Real, Spain.

 

208.          "A New Compact Low-Power High Slew-Rate Class AB CMOS Buffer". Antonio Torralba, Ramon Carvajal, Juan Galan, Jaime Ramirez-Angulo and Marta Laguna, XVIII Conference on Design of Circuits and Integrated Systems DCIS  2003, November 18-21, 2003, Ciudad Real, Spain

 

209.          "MOS and bipolar translinear cells and applications for implementation of low distortion OTAs". Jaime Ramirez-Angulo, Chandrika Durbha, Gladys Omayra Ducoudray, Ramon G. Carvajaland Meghraj Kachare, XVIII Conference on Design of Circuits and Integrated Systems DCIS 2003, November 18-21, 2003, Ciudad Real, Spain

 

210.          "Resistorless and capacitorless schemes for continuous-time linear weighted voltage addition using multiple input fully differential operational amplifiers". Francisco Ledesma and Jaime Ramirez-Angulo, XVIII Conference on Design of Circuits and Integrated Systems DCIS 2003, November 18-21, 2003, Ciudad Real, Spain.

 

211.          "Very Low Voltage Analog Signal Processing Based on the MOS Translinear Principle". Carlos A. De La Cruz Blas, Sara Gallego, Antonio J. López-Martín, Alfonso Carlosena and Jaime Ramirez-Angulo, XVIII Conference on Design of Circuits and Integrated Systems  DCIS 2003, November 18-21, 2003, Ciudad Real, Spain

 

212.          "A fully differential, 1.5V supply, high linearity, large bandwidth transconductor with high output impedance ". Juana Martínez-Heredia, Antonio Torralba, Ramón Carvajal and Jaime Ramírez-Angulo, XVIII Conference on Design of Circuits and Integrated Systems DCIS 2003, November 18-21, 2003, Ciudad Real, Spain

 

213.          1.5V Rail-to-Rail Programmable-Gain CMOS Amplifier, “ Jaime Ramírez-Angulo 1, Antonio J. López-Martín , Ramón G. Carvajal, and Chad Lackey, ESSCIRC '03. 16-18 Sept., 2003, Estoril, Lisboa  Pages:373 - 376.

 

214.          “Techniques for very low-voltage operation of continuous-time analog CMOS circuits,” J. Ramirez-Angulo, R. Gonzalez-Carvajal, A. Lopez-Martin, Proceedings 17th International Conference on VLSI Design, 2004. 5-9 Jan. 2004 Pages:39 - 44

 

215.           “A novel serial multiplier using floating-gate transistors, “Luis F. Cisneros-Sinencio, Alejandro Diaz-Sanchez, Jaime Ramirez-Angulo, 2004 IEEE International Symposium on Circuits and Systems, May 23-26 2004, Vancouver, Canada pp. I-861-864

 

216.          “Novel Architectures of Class AB CMOS current mirrors with programmable gain, Chandrika Durbha, Jaime Ramírez-Angulo, Antonio Lopez-Martin and Ramon Gonzalez-Carvajal., , 2004 IEEE International Symposium on Circuits and Systems, May 23-26 2004, Vancouver, Canada , pp. IV-760-763.

 

217.          “Power Efficient Fully Differential Low-Voltage Two stage Class AB/AB op-amp architectures,”, Shanta Thoutam, Jaime Ramírez-Angulo, Antonio Lopez-Martin and Ramon Gonzalez-Carvajal., , 2004 IEEE International Symposium on Circuits and Systems, May 23-26 2004, Vancouver, Canada pp. I-733-736

 

218.          “Highly Linear Wide tuning range CMOS transconductor operating in moderate inversion,”, Chandrika Durbha, Jaime Ramírez-Angulo, Antonio Lopez-Martin and Ramon Gonzalez-Carvajal., , 2004 IEEE International Symposium on Circuits and Systems, May 23-26 2004, Vancouver, Canada, I-805-808.

 

219.          “A novel family of Low-voltage very low power super class AB OTAs with significantly enhanced slew rate and Bandwidth,”, Sushmita Baswa, Jaime Ramírez-Angulo, Antonio Lopez-Martin and Ramon Gonzalez-Carvajal., , 2004 IEEE International Symposium on Circuits and Systems, May 23-26 2004, Vancouver, Canada, I-729-732.

 

220.          “Winner take-all class AB input stage : A novel concept for low-voltage power efficient class AB amplifiers,”, Sushmita Baswa, Jaime Ramírez-Angulo, Antonio Lopez-Martin and Ramon Gonzalez-Carvajal., , 2004 IEEE International Symposium on Circuits and Systems, May 23-26 2004, Vancouver, Canada, pp. I-1028-1031.

 

221.          “Compact tunable CMOS OTA with high linearity,”, Meghraj Kachare, Jaime Ramírez-Angulo, Antonio Lopez-Martin and Ramon Gonzalez-Carvajal., , 2004 IEEE International Symposium on Circuits and Systems, May 23-26 2004, Vancouver, Canada I-693-696.

 

222.          “A low-voltage rail-to-rail V-I conversion scheme for applications in current –mode a/D converters,”, Rahul Shukla, Jaime Ramírez-Angulo, Antonio Lopez-Martin and Ramon Gonzalez-Carvajal., , 2004 IEEE International Symposium on Circuits and Systems, May 23-26 2004, Vancouver, Canada I-916-919.

 

223.          “High Speed, High precision Analog Rank order filter in CMOS technology,”, Ramon Gonzalez Carvajal, Jaime Ramírez-Angulo, Gladyrs Omayra Ducoudray-Acevedo, and Antonio Lopez-Martin.,  2004 IEEE International Symposium on Circuits and Systems, May 23-26 2004, Vancouver, Canada pp. I-793-796.

 

224.          “Low-voltage CMOS Analog Four quadrant multiplier based on flipped voltage followers,”, Jaime Ramírez-Angulo, Shanta Thoutam, Ramon Gonzalez-Carvajal.and Antonio Lopez-Martin, , 2004 IEEE International Symposium on Circuits and Systems, May 23-26 2004, Vancouver, Canada, I-681-684

 

225.          “A New Flip Flop Gate Based on Floating Gates,” L. F. Cisneros Sinencio, A. Diaz-Sanchez, J. Ramirez-Angulo, ICEEE  and X CIE, Acapulco, Mexico, September 8-10, 2004

 

226.          S. Baswa, M. Bikumandla , J. Ramírez-Angulo, A. J. López-Martín , R.G. Carvajal: “Low-Voltage Low-Power Super Class-AB CMOS OP-AMP with Rail-to-Rail Input/Output Swing.”, Fifth International Caracas Conference on Devices, Circuits and Systems, November 3-5 2004, Punta Cana, Dominican Republic

 

227.          J. Ramírez-Angulo, A.. J. López-Martín, R. G. Carvajal “New Low-Voltage Class AB/AB CMOS  Op-amp with  rail-to-rail input/output swing ,” Shanta Thoutam, Milind-Subhash Sawant, XIX Conference on Design of Circuits and Integrated Systems, Bordeaux, France, November 24-26, 2004

 

228.          A. Torralba, R.G.Carvajal, F.Muñoz, J. Ramírez-Angulo, New Low Voltage Class-AB CMOS Unity-Gain Buffer and Current Mirror, XIX Conference on Design of Circuits and Integrated Systems, Bordeaux, France, November 24-26, 2004

 

229.          J. Ramirez-Angulo, C. Durbha, A.J. López-Martín, and R. G. Carvajal ,”Tunable Gm-C Biquadratic Filter Operating in Moderate Inversion “XIX Conference on Design of Circuits and Integrated Systems, Bordeaux, France, November 24-26, 2004

 

230.          J. Ramírez-Angulo, A.. J. López-Martín, R. G. Carvajal,” Very Low-Voltage Class-AB CMOS Precision Current Rectifier and Current Mirror,” XIX Conference on Design of Circuits and Integrated Systems, Bordeaux, France, November 24-26, 2004

 

231.          S. Baswa, A. J. López-Martín, J. Ramirez-Angulo, and R. G. Carvajal,” A New Family of Low-Voltage Power-Efficient Class AB CMOS OTAs,” XIX Conference on Design of Circuits and Integrated Systems, Bordeaux, France, November 24-26, 2004

 

232.          A. J. López-Martín, J. Ramirez-Angulo, C. Durbha, and R. G. Carvajal, “Fully-Differential CMOS Current Conveyor Operating in Moderate Inversion,”, XIX Conference on Design of Circuits and Integrated Systems, Bordeaux, France, November 24-26, 2004.

 

233.          P. Rodiz-Obaya, J. J. Rodríguez-Andina, and J. Ramírez-Angulo “An accurate algorithm for transistor sizing in analog CMOS design ,”, XIX Conference on Design of Circuits and Integrated Systems, Bordeaux, France, November 24-26, 2004

 

234.           Power-Efficient Super Class AB OTAs,” Antonio J. López-Martín, Sushmita Baswa, Jaime Ramirez-Angulo, and Ramón G. Carvajal, ESSCIRC 2004, 21-23 September , 2004, Leuven, Belgien.

 

235.          “A Compact Micropower Class AB CMOS Sample and Hold Circuit,” Xabier Ugalde, Antonio J. Lopez-Martin, Carlos A. De La Cruz Blas, Alfonso Carlosena, Ramon G. Carvajal, Jaime Ramirez-Angulo, New Mexico State University, USA, XX Conference on Design of Circuits and Integrated Systems DCIS 2005, November 18-21, 2005, Lisboa, Portugal  (accepted for presentation)

 

236.          “Class-AB Low-Voltage CMOS Unity-Gain Buffers,” Mariano Jimenez,
Antonio Torralba, University of Sevilla, S Ramon G. Carvajal, Jaime Ramirez-Angulo, XX
Conference on Design of Circuits and Integrated Systems DCIS 2005, November 18-21, 2005, Lisboa, Portugal (accepted for presentation)

 

237.          A Low-Voltage all Cascode High Performance CMOS Current Mirror and Applications,” Annajirao Garimella, Lalitha Garimella, Jaime Ramirez-Angulo, Ramon G. Carvajal, Antonio J. Lopez-Martin, XX Conference on Design of Circuits and Integrated Systems DCIS 2005, November 18-21, 2005, Lisboa, Portugal (accepted for presentation)

 

238.          “Low-Power Super Class AB OTAs based on adaptive techniques,” Ramon G. Carvajal, Jaime Ramirez-Angulo, Antonio Lopez-Martin, Juan Galan, Carlos Rubia-Marcos, XX Conference on Design of Circuits and Integrated Systems DCIS 2005, November 18-21, 2005, Lisboa, Portugal (accepted for presentation).

 

239.          “CMOS Transconductor with 75-dB SFDR for Rail-to-Rail Input Swings,” Antonio J. Lopez-Martin, S Jaime Ramirez-Angulo, Ramon G. Carvajal, XX Conference on Design of Circuits and Integrated Systems DCIS 2005, November 18-21, 2005, Lisboa, Portugal (accepted for presentation)

 

240.          New Rail-to-Rail Input Stage With Reduced Supply Requirements,” Ivan Padilla, Jaime Ramirez-Angulo, Ramon G. Carvajal, Antonio Lopez-Martin. XX Conference on Design of Circuits and Integrated Systems DCIS 2005, November 18-21, 2005, Lisboa, Portugal (accepted for presentation).

 

241.          “MOS Resistor Linearization and Range Improvement Using Large Resistive Biasing Elements and Capacitive Voltage Averaging,” Jaime Ramirez-Angulo, Milind S. Sawant, Ramon G. Carvajal, Antonio Lopez-Martin, XX Conference on Design of Circuits and Integrated Systems DCIS 2005, November 18-21, 2005, Lisboa, Portugal (accepted for presentation)

 

242.          “A 3-V 3-mW CMOS Transconductor with 75-dB SFDR for Rail-to-Rail Input Swings,” Antonio J. Lopez-Martin, Jaime Ramirez-Angulo, Ramon G. Carvajal, XX Conference on Design of Circuits and Integrated Systems DCIS 2005, November 18-21, 2005, Lisboa, Portugal (accepted for presentation).

 

243.          “Low Voltage Low Noise Amplifier for Radio Frequency Applications,” Francisco Rafael Trejo-Macotela, Alejandro Diaz-Sanchez, Jaime Ramirez-Angulo, IEEE Midwest Symposium on Circuits and Systems, Cincinnati, OH August 21-23 2005.

 

244.          “Wide gm Adjustment Range Highly Linear OTA with Programmable Mirrors” Milind Subhash Sawant, Jaime Ramirez-Angulo, Ramon Carvajal, Antonio Lopez-Martin, IEEE Midwest Symposium on Circuits and Systems, Cincinnati, OH August 21-23 2005.

 

245.           “New Compact  Implementation of Very High Performance CMOS Current Mirrors,” Milind Subhash Sawant, Jaime Ramirez-Angulo, Ramon Carvajal,  Antonio Lopez-Martin, IEEE Midwest Symposium on Circuits and Systems, Cincinnati, OH August 21-23 2005.

 

246.          “New Compact and Versatile Wide Tuning Range CMOS Voltage Controlled Oscillator,”  Annajirao Garimella, Lalitha M Kalyani-Garimella, Randy  Romero, Jaime Ramirez-Angulo, Ramon G. Carvajal and Antonio Lopez-Martin, IEEE Midwest Symposium on Circuits and Systems, Cincinnati, OH August 21-23 2005.

 

247.          “Low Voltage Rail-to-Rail Operatoinal Amplifier Based on Flipped Voltage Followers,  Ivan Padilla, Jaime Ramirez-Angulo, Ramon Carvajal, Antonio Lopez-Martin and Ramon G. Carvajal, IEEE Midwest Symposium on Circuits and Systems, Cincinnati, OH August 21-23 2005.

 

248.          “Compact Low Voltage VHF Continuous Time Current Mode FLF Filter,”  Lalitha M Kalyani-Garimella, Annajirao Garimella, Laura I. Escobedo, J. Ramirez-Angulo, Ramon G. Carvajal and Antonio Lopez-Martin, IEEE Midwest Symposium on Circuits and Systems, Cincinnati, OH August 21-23 2005.

 

249.          “Comparison of Conventional and New Flipped Voltage Follower Structures,” Sheetal Gupta, Ivan Padilla, Jaime Ramirez-Angulo, Antonio Torralba and Mariano Jimenez, IEEE Midwest Symposium on Circuits and Systems, Cincinnati, OH August 21-23 2005

 

250.          “Low Voltage VHF Current Modem  Continuous Time  Filters using Floating gate Programmable Currentr Mirrors” Lalitha MK Garimella, Annajirao Garimella, Laura Escobedo[1], Jaime Ramírez-Angulo 9th-VDAT Symposium, August 10-13 2005, Bangalore India

 

7. FUNDING

 

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Principal Co-investigator of the Project "Characterization of Silicon‑Chrome on MOS" Texas Instruments (TI), Texas A&M University,(1985:$55,000, 1986:$22,000, 1987,1988, 1989,1990: $37,000 each year.

 

Principal Investigator of the Project "Modeling of Parasitic Resistances and Capacitances in Bipolar Transistors", Texas Instruments (TI), Texas A&M University,($42,000 April 1989 ‑ March 1990)

 

Principal Investigator (with J. Beasley and S. Castillo) of proposal:"Improvement of VLSI Systems at New Mexico State University, AT&T Foundation, $10,000, October 1991

 

Principal Investigator of Project "Real Time Solution of Laplace Equation With Analog VLSI Circuits", National Science Foundation, $60,000, September 1991- August 1993.

 

Principal Investigator of project, "IDDQ Testing of CMOS VLSI circuits using built in sensors with multiple emitter lateral bipolar transistors", SANDIA National Laboratories, $30,000, NMSU # 92948, October 1992- September 1993.

 

Principal Investigator of project, "CISE Research instrumentation for Microelectronics," National Science Foundation, $99,520, August 1993- July 1995, NSF proposal CDA-9222883. 

 

Principal Investigator of "Memo of Understanding between NMSU and the Universidad Autonoma Metropolitana, Mexico" NMSU # 92689, February 28,92.

 

Principal Investigator of following  undergraduate research projects currently funded by CIMD-NSF (Comission to Increase Minority Degrees- National Science Foundation):

 

"Development of VLSI-oriented experiments", "Development of a PC software tool to characterize laser trimmed film resistors,"  and "Design of an instrument to generate multiple current sources for testing of ICs," $4014, NMSU # 92676,  Spring 1992

 

"Design and Fabrication of Bipolar and MOS transistor arrays" and  "Design of test fixtures for characterization of integrated Circuits," $2676, NMSU # 92960, Summer 1992

 

"Development and fabrication of CMOS analog multipliers for low-power supply requirements," $1938, NMSU # 93100, Fall 1992

 

"Development of a prototype to measure distance using ultrasonic transceivers," and "Design and Fabrication of integrated CMOS wideband amplifiers, $2676, NMSU  # 93271, and 93272, Spring 1993

 

"Circuit Design for High Speed fuzzy Processors," S95UR029 and Design of Integrated Current Sensors for IDDQ Testing of VLSI Systems, S95UR039: $1512

 

"Design of High Frequency BCMOS buffers," S96UR032, "Design Implementation and Characterization of an Electronically Programmable Universal Filter, S96UR033, " Design of Low-Voltage, Low Power Operational Amplifiers using Multiple Input Floating Gate Transistors" S96UR034, "Prototyping Analog Defuzzifiers Using Operational Transconductance Amplifers" V96UR026 total: $7,024, Spring and Summer 1996:

 

Principal Investigator of proposal: "Supplemental Supercomputer time for VLSI microelectronics", NSF Supercomputing center proposal # MIP930001N, submitted Nov 1, 1992

 

Principal investigator of: "Development of a PC interface and software for IDDQ current sensors", SANDIA National Labs, amount awarded: $35,000, performance period: September 1993- August 1994

 

Principal Investigator of "Built In Test Techniques for Mixed-Mode VLSI Circuits", National Science Foundation, amount awarded: $100,000, August 1997- July 2000.

 

Principal Investigator of "Static and Dynamic current sensors for Test of Mixed-Mode VLSI Circuits", Engineering Foundation, amount awarded: $25,000, performance period: October 1997- September 1998.

 

Research at Oak Ridge National Labs, Monolithic Systems Group, Instrumentation and Control Division, 6 weeks in Summer 1997. This was funded through ORISE Faculty Research Participation program.

 

Sabbatical research June 98-98 at Electronics Department of University of Seville in Spain

 

Principal Investigator: Equipment gift certificate 011FY00, $111,500Agilent University Grants Program  to establish a new RF-VLSI laboratory, February 23, 2000

 

Principal Investigator: Design and Fabrication  of a VLSI analog neural network for bit error rate estimation, $15,000, Air Force (subcontract trough New Mexico Highlands University), August 99-July 2000

 

Principal Investigator of "VLSI hardware implementation of Real Time Neuro-fuzzy processors with on chip learning, NASA/ACE ($48,000 subcontract trough New Mexico Highlands University), August 1999-Augsut 2000

 

Design of Mixed Signal Systems, Gift grant from Texas Instruments Inc., $150,000, August 2000-2003

 

Design of Low Voltage-Low power VLSI analog building blocks for aerospace and soft computing applications, NASA Center for Autonomous Control Engineering (subcontract trough

University of New Mexico) , $250,000 August 2000-August 2004.

 

8. GRADUATE STUDENTS

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Currently advising

 

Ph.D.:              Ivan Padilla , Annajirao Garimella, Rahul Shukla

 

M.Sc.:              Carlos Urquidi, Lalitha Garimella, Milind Sawan Sunjash, Javier Hernandez., Sheetal Gupta, Bindu Gummani, Somya Rathi, Dimple Chiirumamilla, Jose Luis Ruiz Chavira,  Pedro Chavarria, Habeeb UR Rahman Mohammed

 

 

 

9. INVITED PRESENTATIONS

 

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Presentations on Statistical Circuit Design. 

 


 

 

 

Presentations on Thin Film Hybrid Circuits

 

 

 

 

 

 

Short courses on Analog VLSI fuzzy processors:

 

 

 

 

 

 

Plenary presentations

 

 

 

 

 

 

Chair of Ph. D. Examination of Eva Vidal Lopez on January 26st at the Universidad Politecnica de Catalunya in Barcelona, Spain

 

Applications of Floating-gate Transistors on January 26 and 27 at the Universidad Politecnica de Catalunya in Barcelona,  and at the Universidad Rovira i Virgili in Tarragona both in Spain

 

Short course: "Low Voltage BiCMOS analog Integrated Circuits," XII

Conference on Design of Integrated Circuits and Systems, Seville Spain, November 18, 1997

 

Plenary presentation:   VLSI Hardware for Fuzzy Logic , SAAEI98 Conference Pamplona Spain on September 16, 1998

 

Plenary presentation: "Design of VLSI Systems" CIECE 2000, March 8, 2000, Aguascalientes, Mexico

 

“Low Voltage Analog CMOS Circuits Based on Floating Voltage Sources,” Texas A&M University, July 10, 2000, Seminar

 

“Low voltage CMOS Circuits,”  IEEE 2nd Dallas Workshop on Low-Voltage and Low Power Mixed-Signal Circuits and Systems, Dallas, TX March 26th, 2000

 

“Analog VLSI: state of the art,”  Tecnologico de Monterrey, campus Toluca, Mexico March 28, 2001

 

“Continuous time-Low voltage techniques, “ Seminar of Electronics Department of National Institute for Astrophysics, Optics and Electronics (INAOE) Puebla, Mexico, April 17, 2001

 

“Design of analog VLSI Systems,” New Mexico Highlands University, September 6, 2001

 

“VLSI Systems: where Dreams come true,”  New Mexico AMP student research Conference, September 13, 2002, Las Cruces, NM

 

“VLSI Systems: State of the Art”, IMS Symposium, Tecnológico de Monterrey, Campus Cd. Juarez, Nov. 15, 2002

 

“VLSI Systems, an Overview”, Tecnologico de Monterrey, Campus Ciudad Juarez, May 13, 2003

 

Invited Presentations on  “Low Voltage Continuous-time Analog Circuit Design”:

           

            Seminar of the  Autonomous University of  Puebla,  ICUAP April 10, 2003

 

November 21,  2003 DCIS Conference (Design of Integrated Circuits and Systems), Ciudad Real, Spain 

 

VLSI Design 04 Conference  January 9, 2004 , Mumbai India

 

Indian Institute of Technology January 12, 2004

 

Invited presentation at conference ICEEE/CIE: Multiple Input floating gate transistors: The continuous time counterpart to Switched Capacitor circuits, Acapulco, Mexico September 10, 2004

 

“Some techniques for low supply voltage operation of  CMOS Circuits,”  IEEE  Dallas Workshop on Low-Voltage and Low Power Mixed-Signal Circuits and Systems, Dallas, TX September 27 , 2004

 

Center for Electronic Engineering Research  January 14, Pilani India

 

Indian Institute of Technology, Dehli, India January 16, 2004   

 

10. PROFESSIONAL ACTIVITIES

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IEEE fellow (January 1st 2000)

 

Member of  evaluation panel of the NSF-CISE Educational Innovation Program.   April 22, 1997, Washington D.C.

 

Attendance of short course on "Oversampled Delta-Sigma Data Converters" in Monterrey CA on February 3-5, 1997.

 

Attendance of short course Design of Analog Integrated Circuits, MIT, May 1985

 

 Development of distance education M.Sc. courses for students  from Ciudad Juarez, Mexico.

 

Member of Technical Committee of Third IEEE International Workshop on Design of Mixed mode VLSI systems and Applications, Puerto Vallarta, Mexico July 1999.

 

Reviewer for:

 

IEEE Journal of Solid State Circuits

 

IEEE Transactions on Circuits and Systems

 

IEEE Transactions on CAD

 

IEE Electronics Letters

 

IEE Proceedings, part G

 

IEEE International Symposium on Circuits and Systems: 1984-2004

MWSCAS 1983-2004

 

Member of the Analog Signal Processing Committee (secretary for two years) of the IEEE Circuits and Systems Society.

 

Member of Technical Committee IEEE-ISCAS 98.

General Chair 42nd Midwest Symposium on Circuits and Systems (IEEE sponsored)

 

Member of the Steering Committee Midwest Symposium on Circuits and Systems

 

Member of the Technical Committee of the 3rd IEEE International workshop on Mixed-Mode

 

Member of the technical committee of the 2001 IEEE International Symposium on Circuits and Systems

 

Member of Technical committee of 2002 Midwest Symposium on Circuits and Systems

 

Member of the evaluation review panel  of the Spanish Ministerium for Science and Technology November 18, 2003)

 

Member of the Promotion and Tenure Committee of the National Institute of Astrophysics Optics and Electronics, National Science Council (CONACYT)

11. MOST IMPORTANT RESEARCH CONTRIBUTIONS

 

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CAD

 

Involved in the development of the first switched-capacitor silicon

compiler. This made use of  a novel algorithm to design circuits with arbitrary

magnitude and phase response specifications

 

Stability of Laser trimmed film resistors

 

Development of the first fundamental theory to predict the long term stability of  laser trimmed film resistors. Drifts due to aging limit the maximum practical resolution achievable with these devices As a result of this work optimal selection can now be made of the laser trim paths. This allows increased (long term) resolution of circuits using laser trimmed film resistors. As a result of his work novel digitally trimmable thin film resitor and MOS transistor structures have been developed.

 

Integrated (monolithic) filters:

 

Publication of Seminal paper on current-mode filters. The paper describes an approach for implementation of continuous-time current-mode filters. Pioneer work in the development of current-mode filters based on ladder structures

 

Introduction of various new  architectures of linear transconductance amplifiers that are characterized by high linearity and very wide gain adjustment range maintaining almost constant bandwidth. These characteristics are extremely important from the point of view of easy tunability of continuous time OTA-C filters.

 

Report of a novel scheme for high frequency filtering that allows implementation of integrated filters with foQ products very close to technology limits.

 

Introduction of a simple and effective technique to compensate transconductor excess phase. This makes possible operation of continuous time filters OTA-C at higher frequencies

 

Development of a new family of active filters (denoted OTA-Op-amp approach) that combines op-amps in closed loop and OTAs in open loop in an optimal way. These technique allows relaxing the performance requirements of both, the OTA and the op-amp

 

Analog signal processing using floating gate transistors:

 

Pioneering work in the development of novel building blocks with Multiple Input Floating Gate (MIFG) Transistors for linear and nonlinear analog signal processing blocks.

 

The first highly linear MIFG analog four quadrant multiplier that operates with a single supply voltage of only 1.5V

 

The first low-voltage (1.5V) Op-amp based on the MIFG technique.

 

The first continuous-time common-mode feedback network based on the MIFG technique

 

The first analog defuzzifier using MIFG transistors

 

Test of mixed-signal VLSI systems:

 

Introduction of a novel and efficient  method for the test of  mixed-mode VLSI systems (which has been patented). This method allows characterization of a mixed-mode VLSI system  with a simple global test and without utilization of  test vectors. It has potential to reduce enormously the the cost of testing mixed-mode VLSI circuits In this relation novel schemes for high speed dynamic current testing have been introduced.

 

Implementation of  VLSI Fuzzy processors

 

Development of various new building blocks for required in modular expandable analog neuro-fuzzy processors: the first  membership function circuits with linearly and continuously adjustable parameters, min-max circuits, multipliers, novel analog defuzzifiers.

 

VLSI analog array processors:

 

Analog FIR filters, analog median filters, analog wavelet processors

 

Novel Low-voltage techniques:

 

Conception of several innovative methods for continuous-time operation of op-amp based

circuits with  sub-volt  supply requirements close to a transistor's threshold. voltage. Among these techniques the two most relevant are: a) Low  voltage circuits based  on  static and dynamic floating voltage sources, b) Low voltage circuits  based  floating gate and quasi floating gate transistors

 

BiCMOS circuits:

 

Development of several novel analog BiCMOS  building blocks with improved

characteristics. These make optimal use of the availability of MOS and

bipolar transistors on a single silicon substrate.

 

Cellular Networks:

 

Pioneering work on the solution of partial differential equations using analog VLSI circuits. First chip for solution of Laplace (Poisson) equation  using analog VLSI circuits. This has applications in nonlinear adaptive optics. He has been also involved in the development of analog cellular neural networks.

 

Wideband amplifiers:

 

Development of a novel approach for implementation of linear wideband amplifiers with high-gain, and bandwidth close to technology limits.

12. PATENTS

 

"Integrated Circuit Fault Testing Implementing Voltage supply rail pulsing and corresponding instantaneous current response analysis,"  Patent 5,483,170, January 1996, Jeffrey S. Beasley, Hema Ramammurhty, Jaime Ramirez-Angulo and Mark R. DeYong

 

"Digitally Configurable Analog VLSI method for real time souliution of partial differential equations,"  Patent 6,141,676 October 31, 2000, Jaime Ramirez-Angulo Mark R. DeYong

 

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[1] Delphi Corporation, Mexico. laura.i.escobedo@delphi.com