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Improved design of FIR notch filter by using Bernstein polynomial
Author(s) -
Tseng ChienCheng
Publication year - 2001
Publication title -
international journal of circuit theory and applications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.364
H-Index - 52
eISSN - 1097-007X
pISSN - 0098-9886
DOI - 10.1002/cta.178
Subject(s) - band stop filter , finite impulse response , polynomial , bernstein polynomial , distortion (music) , mathematics , zero (linguistics) , filter (signal processing) , control theory (sociology) , filter design , low pass filter , topology (electrical circuits) , algorithm , computer science , mathematical analysis , telecommunications , combinatorics , bandwidth (computing) , artificial intelligence , philosophy , computer vision , amplifier , linguistics , control (management)
Bernstein polynomial has been used to design maximally flat FIR notch filters. However, the designed magnitude response is not exactly zero valued at notch frequency. In order to eliminate this undesired distortion, a novel method is presented to improve notch filter design in this paper. The designed notch filter is not only exactly zero valued at notch frequency but also has unity gain at ω =0 and π . Copyright © 2001 John Wiley & Sons, Ltd.