Tunable four phase voltage mode quadrature oscillator using two CMOS MOCCIIs

In this paper a tunable four phase sinusoidal quadrature oscillator is realized using CMOS multi-output second generation current conveyors (MOCCIIs). The circuit uses only two CMOS MOCCII and provides four phase quadrature voltage outputs with equal magnitude at the oscillating frequency. The oscillator also exhibits independent frequency control. The proposed circuit is designed and verified using PSPICE simulation.