High output impedance current-mode lowpass, bandpass and highpass filters using current controlled conveyors

Three new current-mode second-order filter configurations which employ one or two current controlled conveyors (CCCIIs) and three passive elements are presented. Each proposed filter can realize one of the bandpass, lowpass o r highpass responses all at high impedance outputs. The proposed filters of fer current-control of pole angular frequency w(o) without disturbing the p arameter w(o)/Q. No component matching is required and all the passive and active sensitivities are low. PSPICE simulation results are given to confir m the theoretical analysis.