Sinusoidal Oscillator Realization Using Band-Pass Filter

摘要

A second-order sinusoidal oscillator realization is presented using biquad band-pass filter. It uses non-inverting type of band-pass filter with unity-gain feedback to generate sinusoidal oscillation. The current-controlled differential difference current conveyor transconductance amplifier (CCDDCCTA) block-based band-pass filter is proposed to implement sinusoidal oscillation. The oscillator is found to posses both the voltage and current outputs simultaneously. It is also observed that the amplitude of the output current of the oscillator can be varied using bias current of CCDDCCTA. The feature of an oscillator like non-ideality has also been discussed for the proposed oscillator. The theoretical propositions have been verified through SPICE-based OrCAD 16.6 circuit simulator.