Voltage Mode Quadrature Oscillator Employing Single Differential Voltage Current Controlled Conveyor Transconductance Amplifier

This paper presents a second order voltage mode quadrature sinusoidal oscillator using a recently reported active building block, namely the differential voltage current controlled conveyor transconductance amplifier. The circuit proposed here employs single differential voltage current controlled conveyor transconductance amplifier, two grounded resistors and two grounded capacitors. The use of grounded capacitors makes the circuit suitable for monolithic circuit implementation. The proposed circuit enjoys the advantage of the independent control of the condition of oscillation and the frequency of oscillation. Also the condition of oscillation and the frequency of oscillation can be tuned electronically by the use of separate bias currents. The non ideal analysis and the sensitivity analysis of the proposed oscillator circuit have been carried out. This shows that the circuit exhibits low active and passive sensitivities. PSpice simulation results have been included which verify the workability of the proposed circuit.