VM Universal Biquad Filter Using Single VDCC

This paper presented a voltage mode (VM), multiple input and single output (MISO) universal biquad filter using only one voltage differencing current conveyor (VDCC) and three passive components. The proposed configuration is capable of realizing second-order low pass filter (LPF), high pass filter (HPF), band pass filter (BPF), band-reject filter (BRF) and all pass filter (APF). The proposed biquad structure has orthogonal tunability of center frequency (ω), pole quality factor (Q). The proposed filter responses have been verified through PSPICE simulations using CMOS VDCC implemented in 0.18μm TSMC technology and also validated using MATLAB evaluations.