Design of 2-D IIR filters using a new digital spectral transformation

Author

Hegde, Rajmohana ; Shenoi, B.A.

Author_Institution

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

Volume

1

fYear

1995

fDate

30 Apr-3 May 1995

Firstpage

344

Abstract

A Digital Spectral Transformation (DST) has been proposed for the design of 2-D IIR digital filters with a circular and an elliptical region for the passband region of the lowpass filter. This method guaranteed stability of the 2-D filter and did not resort to tedious optimization techniques. The same DST can be used to approximate the constant group delay response. In this paper, a new DST is proposed to design these filters using the same design procedure but it yields a significantly smaller value for the error in the approximation to the circular and elliptical contours in the ω₁-ω₂ plane. Some illustrative examples are included

Keywords

IIR filters; circuit stability; low-pass filters; two-dimensional digital filters; 2D IIR filters; circular contours; constant group delay response; digital filters; digital spectral transformation; elliptical contours; lowpass filter; passband region; stability; Delay; Design methodology; Digital filters; Discrete cosine transforms; IIR filters; Optimization methods; Passband; Prototypes; Region 2; Stability;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 1995. ISCAS '95., 1995 IEEE International Symposium on

Conference_Location

Seattle, WA

Print_ISBN

0-7803-2570-2

Type

conf

DOI

10.1109/ISCAS.1995.521521

Filename

521521