Harnatha (Hari) C. Reddy, Ph.D.

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Biographical Sketch

Hari C. Reddy received his B.E. degree in Electrical Engineering in 1964 from Sri Venkateswara University, Tirupati, India; the M.E. degree in Electrical Engineering from M.S. University of Baroda, Baroda, India in 1966; and the Ph.D. degree in Electronics and Communication Engineering, from Osmania University, Hyderabad, India in 1974. He then did two years of post doctoral research work at the Concordia University, Montreal, Canada from 1975-1977 as a Research Associate and Research Assistant Professor.

Professor Reddy has been with the Department of Electrical Engineering, California State University, Long Beach (CSULB), as a tenured full-professor since 1987. He served as Chair of the Engineering Faculty Council and Director of the Ph.D. program during 1997-2000. Dr. Reddy was with the Department of Electrical Engineering at Tennessee Technological University (TTU), Cookeville, Tennessee as an Associate Professor (1980-83) and as tenured full-professor from 1983-87. At TTU, he also served as the Director of Electrical Engineering Graduate Studies. Before joining Tennessee Tech, Dr. Reddy held teaching and research positions at the State University of New York College at Buffalo; Concordia University, Montreal, Canada; Osmania University, Hyderabad, India; and S.G.S. Institute of Science and Technology, Indore, India.

From 1993-99, he was a Guest Professor at the Institute for Signal and Information Processing and Institute for Integrated Systems, Swiss Federal Institute of Technology (ETH), Zurich , Switzerland (typically spending two months in a year). He was a Visiting Researcher from 1994 to 1997, 1999 in the Department of Electrical and Computer Engineering at the University of California, Irvine, California. During 2004 - 2006 he will be an Adjunct (Research) Professor of Electrical and Computer Engineering, Concordia University, Montreal, Canada. In 2003, Professor Reddy was awarded Honorary Professorship of the Technical University of Iasi, Iasi, Romania.

Dr. Reddy's teaching and research interests are in the broad areas of Circuit Design, Filters, Systems and Signal Processing. His research is concerned with the theory and applications of Multidimensional Circuits, Systems and Digital Filters. For the past several years, he has also been working on high speed circuit design and signal processing related problems using delta operator. He has co-authored about one hundred and twenty five research papers and three book chapters. Since 1974, he has been actively participating in the annual IEEE International Symposium on Circuits and Systems (ISCAS) as a research paper contributor, session chairman and organizer. He attended and presented papers in over fifty international conferences.

Dr. Reddy's research in the Multidimensional Signal Processing area during the past twenty five years, was supported by the National Science Foundation Grants and the Center for Manufacturing Research and Technology Utilization at Tennessee Tech and the California State University at Long Beach. He was also earlier selected for research grants from the State University of New York; Concordia University, Montreal; Ministry of Education, Quebec, Canada; and the Natural and Engineering Research Council of Canada.

 

Major Areas of Research Contributions:

Dr. Reddy's major research contribution is in Multivariable Circuit Theory and its applications to Multidimensional Digital Filter Design, Multidimensional Stability Theory and Testing. He is a principal author in defining a new class of Multivariable Hurwitz Polynomial called "Very Strict Hurwitz Polynomial (VSHP)" and "Very Strict Semi Hurwitz Polynomial (VSSHP)." This led to the systematic generation of BIBO Stable Multidimensional Digital Filter Transfer Functions without nonessential singularities of the second kind and paved a way for the robust (structurally stable) design of multidimensional digital filters.

Dr. Reddy’s other area of significant research is on the study of symmetry in multidimensional functions and its application in deriving efficient algorithms for the design of multidimensional digital filters. Dr. Reddy and his co-researchers derived the constraints on the 2-D real and complex and 3-D filters so that they possess quadrantal, octagonal and rotational symmetries in their frequency responses/Fourier transforms. This study covered multidimensional continuous and discrete time systems. A tutorial article (2003 CAS Magazine) of the 2-D contributions can be viewed from the web-site:

http://www.csulb.edu/~hreddy/Magazine_Symmetry.pdf

For the past several years, Dr. Reddy has been working on the development of new design techniques that yield low sensitivity and numerically accurate sampled data and digital filters using delta operator. The research has covered both one dimensional and multi-dimensional filters using the new g - complex (bi-) plane corresponding to the delta operator. He and his co-researchers also defined various symmetries for delta operator formulated 2-D systems and developed algorithms for low sensitivity 2-D filter designs. The 2-D delta operator based symmetry theory is shown to unify 2-D continuous and discrete time symmetries. Further, new Circuit synthesis has been developed in the g - complex plane for the design of sampled-data and digital filters. Professor Reddy’s recent research interests are also in the development of unified Cellular Neural Network (CNN) Theory using delta operator. He is presently investigating the circuit paradigm for nano-electronics by studying the connection between CNN and nano-electronic circuits and systems. In the past five years he has partially and fully supervised three doctoral dissertations on the above topics (two at ETH Zurich (1998, 1999) and one at the University of California, Irvine -2002)

IEEE Activities:

Dr. Reddy has been interested on the impact of advances of research on Electrical Engineering Education. He was the guest editor for the special issue (Research and Education: Circuits and Systems) of the IEEE Transactions on Education published in August 1989. He served as the Principal Associate Editor for the IEEE Transactions on Education (1984-'90). From 1993 to 1996, he was also an Associate Editor for IEEE Transactions on Circuits and Systems (Part I) and also served as an Associate Editor for the Journal of Circuits, Systems and Computers. Dr. Reddy has served as general Co-Vice Chair of the 1992 IEEE International symposium on Circuits and Systems held in San Diego, California. During the past twenty years he has also organized several invited special sessions at the IEEE-ISCAS. He served as the ISCAS Steering Committee Chair in the Organizing Committees for IEEE ISCAS held in Monterey, California in 1998 and in Geneva, Switzerland in 2000.

In 1999, he co-organized and served as General Chair of the 3rd IEEE CASS Emerging Technologies Workshop on "Mixed Signal Integrated Circuit Design (MSICD)" held in Long Beach, California.

He is presently serving a three-year term in the steering committees of Asia Pacific Conference on Circuits and Systems (APCCAS) and represents CAS Society in the organizing committee for the European Conference on Circuit Theory and Design (ECCTD).

Professor Reddy served as President-elect of the IEEE Circuits and Systems Society and Chair of Regional Activities Division (RAD) in 2000. He was President of the Society in 2001. In 2002, he was Past President and Chair of the CASS Awards Committee. Earlier, he served as CAS Society’s Vice-President, Conferences for three years (1996, 1997, 1999). From 1993 to 1995, he also served as member of IEEE CAS Society’s Board of Governors. In all, he served about ten years in the administrative committees of the IEEE CAS Society. Amongst the other leadership roles, during his term as 2001 CASS President he has initiated the establishment of Executive Office at the IEEE Headquarters in New Jersey. The office was established in 2002 and the founding Execuitive Director was recruited in 2002.

Presently, Professor Reddy also represents the CAS Society in the steering committee of the newly established IEEE Nano-technology NT Council (NTC). He also served as a member of the NT Publications Board as well as Nominations Committee in 2003.

Currently, Professor Reddy is serving as Chair of the IEEE Fellow Evaluation Committee for the Circuits and Systems Society (2003 and 2004). This year (2004) he is appointed to serve as Chair of president’s ad hoc committee on planning and priorities (ACPP) for the CAS Society.

Honors and Recognitions:

  • Prof. Reddy is a recipient of the 2003 IEEE Circuits and Systems Society’s Meritorious Service Award. It was presented at the 2003 European Conference on Circuit Theory and Design held at Krakow, Poland in September 2003. The citation reads, "For outstanding long-term and dedicated service to the welfare of the IEEE CAS Society with far-reaching impact on the development of the society."

  • In 2003, Prof. Reddy received the diploma of honorary member of the Senate of the Technical University of Iasi, Romania and the "Gh. Asachi" University Medal for outstanding contributions in the activities of cooperation with the faculties of the Technical University.

  • Prof. Reddy was elected as a Fellow of the IEEE in 1992 for contributions in the field of multidimensional circuits and systems.

  • Prof. Reddy is a recipient of the Distinguished Faculty Scholarly and Creative Achievement Award (1990) and the Outstanding Professor Award (1993) from the California State University at Long Beach. He received (at the 1990 & 1992 Commencements) the TRW Excellence in Research and Teaching Awards.


EE | CSULB | Contact | Edited July 8, 2004

Professor
Electrical Engineering
California State University, Long Beach