A Tunable Universal Filter Using Dual-X Differential Difference Current Conveyor (DXDDCC)
Manish Kumar, Umesh Kumar and M. C. Srivastava
In this paper a tunable voltage mode universal filter using DXDDCC is presented. The circuit employs two DXDDCC, two MOSFET along with two capacitors. The MOSFETs are used for electronic tuning of the cutoff frequency for the filter. The circuit realizes all basic filters with minimum sensitivity and minimum number of passive components. Cutoff frequency and Q are the orthogonal to each other. SPICE simulation results are in conformation of the theoretical analysis.
Keywords: Active Filter, Current Conveyor.