Title :
Simultaneous amplitude and phase approximation for lumped and IIR-filters
Author :
Földvári-Orosz, Juliana ; Henk, Tamás ; Simonyi, Ernó
Author_Institution :
Res. Inst. for Telecommun., Budapest, Hungary
Abstract :
An efficient method is described for simultaneous amplitude and phase approximation of low-pass and bandpass filters. The two kinds of approximation are based on linear interpolation techniques and are carried out alternatively. When approximating digital (infinite-impulse-response) IIR filters, the phase distortion caused by the bilinear transformation is taken into consideration. The efficiency of the method is illustrated by the approximation of a seventh-order low-pass filter.<>
Keywords :
band-pass filters; digital filters; filtering and prediction theory; interpolation; low-pass filters; lumped parameter networks; passive filters; IIR-filters; bandpass filters; bilinear transformation; digital filters; infinite-impulse-response; linear interpolation techniques; low-pass filter; phase distortion; simultaneous amplitude/phase approximation; Approximation algorithms; Approximation methods; Attenuation; Filters; Frequency; Interpolation; Poles and zeros;
Conference_Titel :
Circuits and Systems, 1988., IEEE International Symposium on
Conference_Location :
Espoo, Finland
DOI :
10.1109/ISCAS.1988.15450
