Inductorless Bandpass Characteristics Using All-Pass Networks

Abstract

Bandpass filters without inductors can be realized by using all-pass frequency-sensitive phase-shift networks. Filters with <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">Q</tex> values approaching 1000 have been constructed. A method of reducing the <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">Q</tex> sensitivity is reported.