University of Hertfordshire

Design of switched-current wavelet filters using signal flow graph

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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Original languageEnglish
Title of host publication2010 IEEE International 53rd Midwest Symposium on Circuits and Systems, MWSCAS 2010
Pages1129-1132
Number of pages4
DOIs
Publication statusPublished - 20 Sep 2010
Event53rd IEEE International Midwest Symposium on Circuits and Systems, MWSCAS 2010 - Seattle, WA, United States
Duration: 1 Aug 20104 Aug 2010

Conference

Conference53rd IEEE International Midwest Symposium on Circuits and Systems, MWSCAS 2010
CountryUnited States
CitySeattle, WA
Period1/08/104/08/10

Abstract

A novel scheme for the design of switched-current (SI) wavelet filter is proposed. The signal flow graph (SFG) inverse follow-the-leader feedback (IFLF) structure is employed in the filter design. The presented approach is well suited for the wavelet transform since the SFG method can realize arbitrary rational function derived from any approximation technique, with relatively low sensitivity magnitude. Also, due to the characteristics of SI circuits, the dilation constant across different scales of the wavelet transform can be easily realized by controlling the sampling frequency, which facilitates the practical circuit design. The Gaussian wavelet is used as an example in this paper to elaborate design details.

ID: 15991012