3개의 조정 전압을 이용한 가변 위상 전압 조정 발진기

A voltage controlled oscillator(VCO) using 3 control voltages for multi phase shifting is simulated by using 65㎚ CMOS technology. The VCO makes 8 multi phases. And it can be shifted 360° divides with 128 equal parts. So its resolution is 2.81°. The VCO operating range is from 2.5 ㎓ to 5 ㎓. And it consumes 3.6 ㎽ at 2.5 ㎓ with a 1.2 V supply.