Title :
Synthesis of passive lattice digital filters which are free of constant-input limit cycles
Author :
Sarcinelli, Mario ; Diniz, P.S.R.
Author_Institution :
Programa de Eng. Electr., Fed. Univ. of Rio de Janeiro, Brazil
Abstract :
A general procedure to eliminate constant-input limit cycles, when applied to the well known lattice digital filter structures, results in new realizations. A synthesis procedure for these structures is presented. As illustrated through examples, they maintain the good properties of the original lattice. In particular, details are given for a sixth-order elliptic bandpass filter with passband edges of 980 and 1020 rad/s, stopband edges of 850 and 1150 rad/s, passband ripple of 0.5 dB, minimum stopband attenuation of 65.5 dB, and sampling frequency of 10000 rad/s
Keywords :
digital filters; 65.5 dB; constant input limit cycles elimination; design example; lattice digital filter structures; passband edges; passband ripple; passive lattice digital filters; roll-off; sampling frequency; sixth-order elliptic bandpass filter; stopband attenuation; stopband edges; synthesis procedure; Digital filters; Equations; Lattices; Limit-cycles; Transfer functions;
Conference_Titel :
Circuits and Systems, 1989., IEEE International Symposium on
Conference_Location :
Portland, OR
DOI :
10.1109/ISCAS.1989.100684
