Title :
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
fDate :
2/1/1995 12:00:00 AM
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;
Journal_Title :
Circuits and Systems II: Analog and Digital Signal Processing, IEEE Transactions on
