Comment on “Voltage-Mode All-Pass Filters Including Minimum Component Count Circuits”

摘要

This comment is related to the recently published article“Active and Passive Electronic Components” by S. Maheshwari(2007), which presents single current differencing bufferedamplifier (CDBA) and current-controlled current differencingbuffered amplifier- (CC-CDBA-) based first-order voltage-mode(VM) all-pass filtering (APF) sections. The paper is reviewed,and additional first-order APF realizations have been proposed.