Professor Godi Fischer

Ph.D. Swiss Federal Institute of Technology, 1985
M.S. Swiss Federal Institute of Technology, 1978

In the early 1980's, Dr. Fischer has been funded to do research in the field of analog integrated circuits. This work bas been reflected in articles such as "On the Frequency Limitations of Switched-Capacitor Filters", IEEE JSSC, Aug. 1984, or "Switched-Capacitor Filters for High-Frequencies with Compensation for Finite Amplifier Gain", IEEE Trans. CAS, Aug. 1985.
His current research interests include CMOS amplifiers and comparators, analog and digital filters, data converters, phase-locked loops and low power CMOS circuits.
Dr. Fischer's research activities have been funded by agencies such as the National Science Foundation (NSF), the Office of Naval Research (ONR) and the National Oceanic and Atmospheric Administration (NOAA).
Some of his more recent articles are "Tracking Fishes with a microwatt Acoustic Receiver - An archival Tag Development", IEEE Journ. of Oceanic Eng., 2006, or "A custom Chip Set for a Frequency agile high-Resolution Sonar Array", IEEE Journ. of Oceanic Eng., 2007.

Research Interests

• Electronics
• Signal Processing
• Integrated Circuit Design
• VLSI

Courses recently taught

• ELE339 Electronics I
• ELE343 Electronics II
• ELE432 Solid-state Devices
• ELE444 Advanced Electronic Design
• ELE447 Digital Integrated Circuit Design
• ELE537 Digital Integrated Circuit Design II
• ELE539 Analog Integrated Circuit Design

Contact Information

# 117 Kelley Annex, 4 East Alumni Ave.
Kingston, RI 02881-0805,USA.
Tel. (401) 874-5879
Fax. (401) 782-6422
Email: fischer@ele.uri.edu

Recent Conference Papers:

• A. J. Davis, G. Fischer, H-H. Albrecht, and J. Hess: Digital Correction of Circuit Imperfections in cascaded Delta-Sigma Modulators composed of first-order Sections. IEEE Proc. of ISCAS'00, pp. V 689-692, Geneva, May 28 - 31, 2000.
  
  
• G. Fischer, and A. J. Davis: VLSI Implementation of a Wide-Band Sonar Receiver. IEEE Proc. of ISCAS'00, pp. V 673-676, Geneva, May 28 - 31, 2000
  
  
• G. Fischer, and C. T. Weibel: Delay-Sum Beamforming using Delta-Sigma modulated Inputs. IEEE MWSCAS'00, Lansing, MI, August 8 - 11, 2000.
  
  
• G. Fischer, and D. Hyun: Quantization Noise and Limit Cycle Patterns in Single-Bit Delta-Sigma Modulators. IEEE Proc. of IMTC'01, Budapest, Hungary, May 21 - 23, 2001.
  
  
• G. Fischer, and D. Hyun: Delta-Sigma Modulator Topologies with high Immunity to Pattern Noise. IEEE Proc. of ISCAS'02, pp. III 703-706, Scottsdale, AZ, May 26 - 29, 2002.
  
  
• A. J. Davis, and G. Fischer: Improved Null Cancellation in a sixth order Delta-Sigma Modulator realized with 2 third-order Sections. ADDA&EWADC'02, Prag, Czech Republic, June 2002.
  
  
• S. Lee, G. Fischer, and M. Obara: an Acoustic Tag for long Range Fish Tracking in the Ocean. US-Korea Conf. on Science, Technology and Entrepreneurship, Seoul, Korea, July 2002.
  
  
• M. Obara, G. Fischer, and S. Lee: A monolithic Time of Arrival Detector for acoustic Signals, IEEE MWSCAS'02, Tulsa, OK, August 4 - 7, 2002.
  
  
• G. Fischer, S. Lee, and M. Obara: A Programmable monolithic Temperature Logging Device, IEEE MWSCAS'02, Tulsa, OK, August 4 - 7, 2002.
  
  
• W. Yung, T. Xia, G. Fischer, and A.J. Davis: Process Dependency of MOSFET depletion Mode MOS Capacitors in Series Compensation, IEEE MWSCAS'02, Tulsa, OK, August 4 - 7, 2002.
  
  
• A.J. Davis, G. Fischer, C. Chuen-Song, and W. Yung: MOSFET only third-order Delta-Sigma Modulators, 8th Workshop on ADC Modeling & Testing, pp. 40-48, Perugia, Italy, Sept. 8-10, 2003.
  
  
• H. Narayanan, and G. Fischer: Ultra low power Phase-Locked-Loops, IEEE MSWCAS'05 Cincinatti, OH, Aug. 7-10, 2005.
  
  
• P. Kasturi, and G. Fischer: Development of a Design Platform for CMOS Ampliers. PRIME'06, Lecce, Italy, June 11-16, 2006.
  
  
• G. Fischer and F. Luo: Low Jitter Audio Range PLL with ultra-low Power Dissipation, GLSVLSI'11 Lausanne, Switzerland, May 2-4, 2011.
  
  
• G. Fischer and H. T. Rossby: A Silicon Core for an Acoustic Archival Tag, IEEE SOCC’11, pp. 63-68, Taipe, Taiwan, Sept. 26-29, 2011.
  
  
• G. Fischer and F. Luo: Jitter in ultra-low Power audio-Range PLLs. IEEE MWSCAS’12, Boise, Idaho, August 8-12, 2012.
  
  

Recent Journal Articles:

• A.J. Davis, G. Fischer, H-H. Albrecht, and J. Hess: Digital Corrections of Circuit Imperfections in a two-stage 6th order Delta-Sigma Modulator. Elsevier: Measurement, Vol. 28/2, pp. 93-104, June 2000.
  
  
• A.J. Davis, G. Fischer: Device Technology Limitations in monolithic switched-Capacitor Delta-Sigma modulators. Elsevier: Measurement, 2001.
  
  
• D. Hyun, and G. Fischer: Limit Cycle and Pattern Noise in Single-Stage Single-Bit Delta-Sigma Modulators. IEEE Trans. on Circuits & Systems I, Vol. 49, No. 5, pp. 646-656, May 2002.
  
  
• G. Fischer, S. Lee, M. Obara, P. Kasturi, T. Rossby, and C.W. Recksiek: Tracking Fishes with a microwatt acoustic Receiver - An archival Tag Development. IEEE Journal of Oceanic Engineering, Vol. 31, No. 4, pp. 975-985, October 2006.
  
  
• G. Fischer, A.J. Davis and P. Kasturi: A Custom Chip Set for a Frequency-Agile high-Resolution sonar Array. IEEE Journal of Oceanic Engineering, Vol. 32, No. 2, pp. 416-427, April 2007.
  
  

Books, Book Chapters:

• G. Fischer, and A.J. Davis: Delta-Sigma Modulators. Encyclopedia of Electrical and Electronic Engineering, John G. Webster, Editor, Wiley & Sons, Inc. Vol. 19, pp. 244-254, 1999.
  
  
• G. Fischer: Multirate Systems - Design and Applications, Chapter 5, A/D Converter Applications. Gordana Jovanovic-Dolecek, Editor, Idea Group Publishing, Hershey, PA, 2001.

Recently Fabricated Chip

Fish Track Chip (0.5um CMOS)