A novel noninteracting electronically tunable universal filter

A noninteracting electronically tunable universal filter is proposed in this paper. The proposed circuit can simultaneously realize highpass, lowpass and bandpass transfer functions without changing the circuit topology. Also, the circuit is implemented by using four CCCIIs with controlled current gain and two grounded capacitors which is suitable for IC implementation. Moreover, the proposed circuit can be simply modified to achieve bandstop and allpass responses. The parameters ω0, Q and H0 of the filter are independently tunable. The PSPICE simulation results show that the proposed filter performs its function property. © 2006 IEEE.