Design of equiripple stopband even and odd order linear phase IIR filters

Author

Takebe, Tsuyoshi ; Matsumoto, Toyoji ; Matsumura, Shuitsu ; Kato, Kyoko

Author_Institution

Kanazawa Inst. of Technol., Ishikawa, Japan

Volume

3

fYear

1998

fDate

1998

Firstpage

491

Abstract

This paper presents a method for designing even and odd order, equiripple stopband, arbitrary passband amplitude, perfect linear phase IIR transfer functions with mirror image pole pairs around the unit circle in the z-plane. Starting from a suitable nonlinear phase subfilter, the perfect linear phase transfer function is derived using an auxiliary allpass function in the transformed frequency domain. Design examples of passband flat amplitude lowpass filters are also shown

Keywords

IIR filters; band-stop filters; filtering theory; linear phase filters; poles and zeros; transfer functions; arbitrary passband amplitude; auxiliary allpass function; equiripple stopband IIR filters; even order IIR filters; filter design method; linear phase IIR filters; mirror image pole pairs; nonlinear phase subfilter; odd order IIR filters; perfect linear phase IIR transfer functions; transformed frequency domain; Clocks; Design methodology; Educational institutions; Frequency domain analysis; IIR filters; Mirrors; Nonlinear filters; Passband; Poles and zeros; Transfer functions;

fLanguage

English

Publisher

ieee

Conference_Titel

Electronics, Circuits and Systems, 1998 IEEE International Conference on

Conference_Location

Lisboa

Print_ISBN

0-7803-5008-1

Type

conf

DOI

10.1109/ICECS.1998.814049

Filename

814049