Title :
A Simplified Method for IIR Filter Design with Quasi-Equiripple Passband and Least-Squares Stopband
Author :
Konopacki, Jacek ; Moscins, Katarzyna
Author_Institution :
Silesian Univ. of Technol., Gliwice
Abstract :
The modification of the weighted least squares (WLS) method for IIR filter design based on [5] is presented in the paper. The new algorithm allows to obtain quasi-equiripple approximation of the desired frequency response function in the passband and least squares (LS) approximation in the stopband. Even though the proposed method is very simple, it enables to obtain a larger passband-to-stopband ratio (PSR) of energies and a smaller passband ripple of the designed filter magnitude response when compared with the peak-constrained least-squares method.
Keywords :
IIR filters; band-pass filters; frequency response; least squares approximations; IIR filter design; frequency response function; magnitude response; passband-to-stopband ratio; peak-constrained least-squares method; quasiequiripple passband; weighted least-squares stopband; Approximation algorithms; Frequency response; IIR filters; Least squares approximation; Least squares methods; Minimax techniques; Minimization methods; Nonlinear equations; Paper technology; Passband;
Conference_Titel :
Electronics, Circuits and Systems, 2007. ICECS 2007. 14th IEEE International Conference on
Conference_Location :
Marrakech
Print_ISBN :
978-1-4244-1377-5
Electronic_ISBN :
978-1-4244-1378-2
DOI :
10.1109/ICECS.2007.4510990
