New Method for Flat IIR Filter Design with Improved Group Delay

Author

Fernandez-Vazquez, Alfonso ; Jovanovic-Dolecek, Gordana

Author_Institution

Dept. of Electron., Inst. Nacional de Astrofisica, Optica y Electronica, Puebla

fYear

2006

fDate

26-28 April 2006

Firstpage

33

Lastpage

36

Abstract

This paper presents a new direct method for the design of IIR filters with flat magnitude response in both passband and stopband i.e. Butterworth type filters. The proposed filters have an improved group delay compared with the traditional Butterworth filter. The designed filters are obtained using only a causal part of the designed IIR filter with exactly linear phase. The design parameters are the same as in traditional IIR filter design based on analog filters i.e. passband and stopband frequencies omega_p and omega_s, and passband droop and stopband attenuation A_p and A_s, respectively

Keywords

Butterworth filters; IIR filters; band-pass filters; band-stop filters; Butterworth filters; IIR filter design; analog filters; flat magnitude response; group delay; linear phase; passband filter; stopband filter; Attenuation; Circuits and systems; Delay; Design methodology; Digital filters; Frequency; IIR filters; Nonlinear filters; Optical filters; Passband;

fLanguage

English

Publisher

ieee

Conference_Titel

Devices, Circuits and Systems, Proceedings of the 6th International Caribbean Conference on

Conference_Location

Playa del Carmen

Print_ISBN

1-4244-0041-4

Electronic_ISBN

1-4244-0042-2

Type

conf

DOI

10.1109/ICCDCS.2006.250832

Filename

4016861