Active RLC ladder filter simulation using newly proposed CCCCTA block

Abstract

This paper presents a comparison between various RLC-ladder filter simulation techniques using a recently proposed active building block, that is the multiple output current controlled current conveyer transconductance amplifier (MO-CCCCTA). The well known leap frog technique of RLC ladder filter simulation has been used to design the proposed circuits. The active block is used because of following advantages i) it is a current controlled device so parasitic resistance at current input port can be controlled by an input bias current. (ii) the circuit operation is temperature insensitive (iii) it has high frequency potential (iv) it performs tuning over a wide current range. These simulated filters retain minimum requirement of passive and active elements and provide the filter corner frequency tunability. PSPICE simulation of various ladders has been done and included to ensure the validity of the approach.