All-pass sections realized with single first generation current conveyor

Abstract

Current conveyor was developed by Sedra at almost the same time with the commercial IC opamp in 1968. Although it is one of the oldest active components and has a better frequency response than opamp, there are not as many applications presented in the literature as with the opamp that is used in a wide variety of applications in electronic circuits. This paper aims to use this old however beneficial element in the analogue filter area by giving several new all-pass filter applications. All circuits given employ a single capacitor and are therefore canonic in the number of capacitors.