Adjustable Filter With Fractional-Order Element

Abstract

This paper deals with fractal-order frequency filter, its design methods and practical use. The proposed filter consists of operational transconductance amplifiers (OTAs), adjustable current amplifier (ACA), dual-output current follower (DO-CF) and fractional-order capacitor (FOE). The approximation of fractional-order capacitor is used for the design fractal order frequency filter. The last part of this paper shows simulation results of the proposed cicuit.