Current-mode universal biquad with three inputs and one output using two current conveyors

A new current-mode universal biquadratic filter with three inputs and one output employing only two current conveyors, two grounded capacitors and two grounded resistors is presented. The new circuit offers the following advantage features: using grounded capacitors and resistors which is ideal for integrated circuit implementation, the versatility to synthesize any type of active filter transfer functions without requirements for critical component matching conditions and very high output impedance.