Title :
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
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 omegap and omegas, and passband droop and stopband attenuation Ap and As, 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;
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
DOI :
10.1109/ICCDCS.2006.250832
