Current Conveyor Based Multifunction Filter

TL;DR

This paper introduces a versatile current conveyor-based filter capable of functioning as multiple filter types with orthogonal tuning, suitable for integration, and verified through CMOS simulation and HSPICE analysis.

Contribution

It presents a novel multifunction filter design using current conveyors that simplifies implementation and tuning, with CMOS realization and non-ideal analysis included.

Findings

Supports low pass, high pass, band pass, and notch filtering

Orthogonal tuning of resonance frequency and bandwidth achieved

Simulation results verify theoretical performance

Abstract

The paper presents a current conveyor based multifunction filter. The proposed circuit can be realized as low pass, high pass, band pass and elliptical notch filter. The circuit employs two balanced output current conveyors, four resistors and two grounded capacitors, ideal for integration. It has only one output terminal and the number of input terminals may be used. Further, there is no requirement for component matching in the circuit. The parameter resonance frequency (\omega_0) and bandwidth (\omega_0 /Q) enjoy orthogonal tuning. The complementary metal oxide semiconductor (CMOS) realization of the current conveyor is given for the simulation of the proposed circuit. A HSPICE simulation of circuit is also studied for the verification of theoretical results. The non-ideal analysis of CCII is also studied.