Versatile voltage-mode multifunction biquadratic filter with three inputs and four outputs

A new versatile voltage-mode multifunction biquadratic filter with three inputs and four outputs is proposed. The proposed configuration employs two differential voltage current conveyors (DVCCs) as active elements together with two grounded capacitors and two resistors as passive elements. The circuit can act as a multifunction voltage-mode filter with two inputs and four outputs and can perform simultaneous realization of voltage-mode bandreject, highpass, bandpass and lowpass filter signals from the four output terminals, respectively, without any component choice conditions. On the other hand, it also can act as a universal voltage-mode filter with three inputs and a single output and can realize five generic voltage-mode filter signals from the same configuration without any component matching conditions. HSPICE and MATLAB simulations results are provided to demonstrate the theoretical analysis.