Design of phase equalizers for recursive filters

Author

Antoniou, Andreas ; Howell, Randy

Author_Institution

Dept. of Electr. & Comput. Eng., Victoria Univ., BC, Canada

Volume

1

fYear

1993

fDate

19-21 May 1993

Firstpage

104

Abstract

A least-pth optimization method for the design of an allpass filter to act as a phase equalizer for a given recursive filter is described. The method is applied to various elliptic filters, and the combined filter/equalizer designs are compared with corresponding nonrecursive designs. An optimum equalizer-filter combination can be obtained by selecting a filter with a small passband ripple in the amplitude response. Overall, an equalized design requires substantially fewer filter coefficients, typically 15 to 75% less, than a corresponding nonrecursive design obtained using the Remez exchange algorithm

Keywords

IIR filters; all-pass filters; elliptic filters; equalisers; optimisation; recursive filters; allpass filter; amplitude response; combined filter/equalizer designs; elliptic filters; optimization method; passband ripple; phase equalizer; recursive filter; Algorithm design and analysis; Delay; Equalizers; Finite impulse response filter; Frequency; IIR filters; Matched filters; Minimax techniques; Passband; Transfer functions;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications, Computers and Signal Processing, 1993., IEEE Pacific Rim Conference on

Conference_Location

Victoria, BC

Print_ISBN

0-7803-0971-5

Type

conf

DOI

10.1109/PACRIM.1993.407211

Filename

407211