An Equiripple Bandpass Recursive Digital Filter with Adjustable Skirt Selectivities

Abstract

A method is proposed for the design of a recursive digital filter with equiripple passband magnitude response and exchangeable zeros at ωT= 0 and ωT= π rad, hence adjustable skirt selectivities. It employs the transform variables technique which is well known for numerical accuracy. Copyright © 1980 by The Institute of Electrical and Electronics Engineers, Inc.