Title :
Design of phase equalizers for recursive filters
Author :
Antoniou, Andreas ; Howell, Randy
Author_Institution :
Dept. of Electr. & Comput. Eng., Victoria Univ., BC, Canada
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;
Conference_Titel :
Communications, Computers and Signal Processing, 1993., IEEE Pacific Rim Conference on
Conference_Location :
Victoria, BC
Print_ISBN :
0-7803-0971-5
DOI :
10.1109/PACRIM.1993.407211
