Desensitized Halfband Filters (IEEE Distinguished Lecture)
A very common component in digital circuitry for communications systems is the halfband filter. Halfband filters are often used in cooperation with up-samplers and down-samplers when a sampling-rate change is required. While techniques for designing these filters are well known, an entirely new design method has just been discovered wherein these filters can be made to possess a significant insensitivity to the filter’s tap coefficient values. Such insensitivity can be exploited to yield halfband filters with reduced hardware requirements, which leads to circuits having lower power consumption, higher operating speeds, and smaller IC area. This talk will give a brief introduction to the concept of halfband filters and the applications of halfband filters. It will then explain the rationale and the method for the desensitizing of the filters and, finally, will illustrate through design examples and further explanation how the insensitivity improves upon the conventional designs.
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Location: Building: VEC 325 CSULB Long Beach, California United States |
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Date: 04-November-2009 Time: 12:15PM to 01:15PM (1.00 hours) All times are: US/Pacific |
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No Admission Charge.
Biography:
Alan N. Willson, Jr. is the Charles P. Reames Professor in the UCLA Electrical Engineering Department. He received the B.E.E. degree from the Georgia Institute of Technology, Atlanta, in 1961, and the M.S. and Ph.D. degrees from Syracuse University in 1965 and 1967, respectively. From 1961 to 1964 he was with IBM in Poughkeepsie, N.Y., and was an instructor in electrical engineering at Syracuse University from 1965 to 1967. From 1967 to 1973 he was a Member of the Technical Staff at Bell Laboratories, Murray Hill, New Jersey. Since 1973, he has been on the faculty of UCLA. He served as Associate Dean of Engineering from 1987 through 2001. He has been engaged in research concerning computer-aided circuit analysis and design, the stability of distributed circuits, properties of nonlinear networks, theory of active circuits, digital signal processing, analog circuit fault diagnosis, and integrated circuits for signal processing. He is editor of Nonlinear Networks: Theory and Analysis (New York: IEEE Press, 1974). In 1991, he founded Pentomics, Inc.
Dr. Willson is a member of Eta Kappa Nu, Sigma Xi, Tau Beta Pi, IEEE, the Society for Industrial and Applied Mathematics, and the American Society for Engineering Education. From 1977 to 1979 he served as editor of the IEEE Transactions on Circuits and Systems. In 1980 he was General Chairman of the 14th Asilomar Conference on Circuits, Systems, and Computers. During 1984 he served as President of the IEEE Circuits and Systems (CAS) Society. He was the recipient of the 1978 and 1994 Guillemin-Cauer Awards of the IEEE CAS Society, the 1982 George Westinghouse Award of the American Society for Engineering Education, the 1982 Distinguished Faculty Award of the UCLA Engineering Alumni Association, the 1984 Myril B. Reed Best Paper Award of the Midwest Symposium on CAS, the 1985 and 1994 W. R. G. Baker Awards of the IEEE, the 2000 Technical Achievement Award and the 2003 Mac Van Valkenburg Award of the IEEE CAS Society. He has been selected as the recipient of the 2010 IEEE Leon K. Kirchmayer Graduate Teaching Award.
