A 0.13-µm CMOS local oscillator for 60-GHz applications based on push-push characteristic of capacitive degeneration

A 60-GHz 10mW CMOS VCO is implemented together with a high-speed prescaler in a 130nm CMOS process. Compared to other push-push topologies, capacitive degeneration technique does not impact the resonator and switching transistors are re-used as buffers minimizing noise due to following amplifiers. The measured phase noise at 1MHz offset is -89dBc/Hz and FoM is -174dBc/Hz.