Showing papers by "Mohammed Abo-Zahhad published in 1989"

Design of odd-degree linear-phase sampled-data bandpass filters with equiripple amplitude response

Abstract: This paper presents a novel approach for the design and synthesis of odd-degree sampled-data filters. Initially, an efficient iterative scheme is described for the construction of a class of selective linear-phase distributed bandpass filters with equiripple passband loss response. Then, the filter's transfer function is synthesized using classical distributed circuit networks. Finally, the equivalent switched-capacitor filter could be constructed. the resulting switched-capacitor networks are completely insensitive w.r.t. parasitic capacitances, as well as having low Cmax/Cmin Design tables and an illustrative example are also given.

Selective linear phase bandpass distributed filters with controlled group delay and equiripple passband loss

Abstract: A closed-form solution is described for the construction of even-degree-selective linear-phase bandpass filters of the distributed, digital, or switched-capacitor type. The main feature of these new function is its ability to yield ideal transmission together with linear phase and constant delay at a set of prescribed frequencies distributed over the passband. An efficient algorithm is described for determining the optimum locations of these frequency points, in order to realize an equiripple passband loss. The stability of the resulting transfer function is always guaranteed. Illustrative examples are given. >