A study of META-voltage controlled oscillator and prescaler using 65nm CMOS process: META-VCO and prescaler using 65nm CMOS precess

The VCO (Voltage Controlled Oscillator) and the high speed prescaler are designed using 65nm CMOS technology with the frequency of 28.5GHz 5G mobile communication system. The simulation result show that the VCO has 28.4∼28.8GHz tuning range and the prescaler divides the VCO output. The phase noise of the VCO is −173.75dBc/Hz at 1MHz and −181.43dBc/Hz at 10MHz offset frequency.