IIR multiple notch filter design based on allpass filter

Author

Pei, Soo-Chang ; Tseng, Chien-Cheng

Author_Institution

Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan

Volume

44

Issue

2

fYear

1997

fDate

2/1/1997 12:00:00 AM

Firstpage

133

Lastpage

136

Abstract

A new technique for IIR multiple notch filter design is proposed. The specification of notch filter is first transformed into that of allpass filter. Then, we develop an effective approach to design this desired allpass filter. The realization of proposed notch filter is equivalent to the realization of an allpass filter. Due to the mirror-image symmetry relation between the numerator and denominator polynomials of allpass filter, the notch filter can be realized by a computationally efficient lattice structure with very low sensitivity. Moreover, some examples are presented to examine the effectiveness of proposed method

Keywords

IIR filters; all-pass filters; filtering theory; notch filters; polynomials; IIR multiple notch filter design; allpass filter; computationally efficient lattice structure; denominator polynomials; low sensitivity; mirror-image symmetry relation; numerator polynomials; Electrocardiography; Finite impulse response filter; Frequency; IIR filters; Interference; Lattices; Narrowband; Polynomials; Power harmonic filters; Signal design;

fLanguage

English

Journal_Title

Circuits and Systems II: Analog and Digital Signal Processing, IEEE Transactions on

Publisher

ieee

ISSN

1057-7130

Type

jour

DOI

10.1109/82.554450

Filename

554450