High Input Impedance Universal Biquadratic Filters Using Current Conveyors

摘要

A new configuration for realizing high input impedance voltage-mode second order universal biquadratic filters using plus type second generation current conveyors (CCIIs) is presented in this paper. The proposed configuration uses three plus type second generation current conveyors (CCIIs), three resistors and two capacitors. The present configuration realises all the standard filter functions, namely, low pass, high pass, band pass, notch and all-pass filter from the same configuration. The use of only plus type CCIIs simplifies the configuration as it can be implemented from IC AD844., The circuit demonstrates low active and passive sensitivity performance. The simulated results are found in good agreement with the theoretical analysis.