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This paper presents a new high input impedance voltage-mode universal biquadratic filter with three inputs and six outputs using three plus-type differential difference current conveyors (DDCCs), two grounded capacitors, and three resistors. The proposed circuit can realize all the standard filter functions (low-pass, high-pass, band-pass, notch, and all-pass). Moreover, the circuit enjoys (i) the employment of two grounded capacitors, (ii) high input impedance and (iii) low active and passive sensitivity performance. HSPICE simulation results confirm the theoretical analysis.
Date of Conference: 6-9 Dec. 2010