Novel plus current output CC-based biquad circuit

This paper presents a novel biquad circuit using only plus current output current conveyors (CCs) and grounded passive components. The circuit enables low-pass (LP), band-pass (BP), high-pass (HP), band-stop (BS) and all-pass (AP) responses by the selection and addition of the input and output currents with no component matching constraints. Moreover the circuit parameters ωo and Q can be set orthogonally by adjusting the circuit components. The biquad circuit enjoys very low sensitivities with respect to the circuit components. The achievement examples are given together with simulation results by PSPICE.