Current-mode and transimpedance-mode universal biquadratic filter using two current conveyors

Abstract

A current-mode and transimpedance-mode universal biquadratic filter with single input and multi-outputs using two current conveyors, four resistors and two grounded capacitors is presented. The proposed circuit can realize current-mode notch, highpass and bandpass responses, simultaneously. The current-mode lowpass and allpass responses can be obtained by interconnection of relevant output currents. Moreover, the transimpedance-mode highpass, bandpass, lowpass, notch and allpass filters can also be obtained, simultaneously, from the proposed circuit.