Universal active current filter with single input and three outputs using CCIIs

A universal active filter with current gain and with single input and three outputs using second-generation current conveyors (CCIIs) is presented. The proposed circuit offers the following advantageous features: independent control of omega ₀, Q and current gain through separate grounded resistors, use of only two grounded capacitors making it ideal for integration, and no requirements of critical matching condition/cancellation constraints in realising the lowpass, bandpass, highpass and notch filter responses.