Design of two-dimensional IIR digital filters with linear phase

Author

Shenoi, B.A. ; Misra, P.

Author_Institution

Dept. of Electr. Eng., Wright State Univ., Dayton, OH, USA

Volume

42

Issue

2

fYear

1995

fDate

2/1/1995 12:00:00 AM

Firstpage

124

Lastpage

129

Abstract

Digital Spectral Transformation (DST) has been used to approximate the magnitude response specifications of circular, elliptic and fan shaped filters. In this paper, it is shown that when the DST proposed by Harn and Shenoi (1986) is applied to the 1D lowpass prototype filters with linear phase characteristics to realize 2D IIR filters, it preserves both magnitude and phase characteristics in the ω₁-ω₂ plane. Several attractive features of using this approach are discussed and simulation results are provided to illustrate its performance

Keywords

IIR filters; delay circuits; elliptic filters; filtering theory; two-dimensional digital filters; 1D lowpass prototype filters; 2D IIR filters; circular filters; digital spectral transformation; elliptic filters; fan shaped filters; linear phase; magnitude response specifications; phase characteristics; two-dimensional digital filters; Adaptive control; Adaptive filters; Circuits; Digital filters; Finite impulse response filter; Frequency estimation; IIR filters; Least squares approximation; Narrowband; Power harmonic filters;

fLanguage

English

Journal_Title

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

Publisher

ieee

ISSN

1057-7130

Type

jour

DOI

10.1109/82.365353

Filename

365353