Allpass and lattice bilinear digital ladder filters

Author

Harnefors, Lennart ; Signell, Svante ; Mossberg, Kåre

Author_Institution

Dept. of Electr. Eng, Malardalen Univ., Vasteras, Sweden

Volume

2

fYear

1996

fDate

12-15 May 1996

Firstpage

393

Abstract

A new design method for allpass bilinear digital ladder filters is presented. The method can be used for design of lattice filters; odd order lowpass filters as well as filters that can be obtained from these by frequency transformations. The resulting structure has a canonical number of multipliers and delays. The filter coefficients are obtained from the coefficients of the desired pole polynomial using simple recursion formulas. A design example for a fifth order elliptic lowpass filter is given, and the filter is analyzed and compared to a lattice wave digital realization

Keywords

all-pass filters; delays; digital filters; elliptic filters; ladder filters; lattice filters; low-pass filters; multiplying circuits; nonlinear filters; allpass filters; bilinear digital ladder filters; canonical number; delays; fifth order elliptic filter; filter coefficients; lattice filters; multipliers; odd order lowpass filters; pole polynomial; recursion formulas; Band pass filters; Concurrent computing; Delay; Design methodology; Digital filters; Frequency; Lattices; Passive filters; Prototypes; Quantization;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 1996. ISCAS '96., Connecting the World., 1996 IEEE International Symposium on

Conference_Location

Atlanta, GA

Print_ISBN

0-7803-3073-0

Type

conf

DOI

10.1109/ISCAS.1996.541729

Filename

541729