Grounded resistor/capacitor controlled multi-phase sinusoidal oscillator using DDCCCs

The authors describe a new oscillator circuit that produces three sinusoidal outputs with different phase angles, using CMOS based Differential Difference Complimentary Current Conveyor (DDCCC), which is based on CMOS technology. The proposed circuit consists of three DDCCCs, a couple of resistors and a couple of capacitors, out of which both resistors and one capacitor are grounded. The described circuit provides three sinusoidal outputs at the same time with different phase angles. Tuning of the circuit can be easily performed by through grounded resistor or grounded capacitor. The characteristics of the oscillator are verified from the simulated results using SPICE 0.5 μm MIETECH level-3 model parameters. Results of simulation are finely agreeing with expected theoretical ones. The topology yields low sensitivities and is therefore convenient for VLSI implementation.