Versatile quadrature oscillator with grounded components

In this paper a new circuit for second-order versatile (current mode as well as voltage mode) quadrature oscillator is proposed. The circuit employs three differential voltage current conveyors and all grounded passive components, ideal for IC implementation. The circuit also possesses non-interactive frequency control. PSPICE simulations using 0.5 mu CMOS parameters confirm the validity and practical utility of the proposed circuit.