A Design of Low Power Multi-GHz LC VCO

摘要

A 1.8 V, 1.5mA fully integrated LC-tank Voltage Controlled Oscillator fabricated in a 0.18 μm CMOS process is presented. VCO is tunable between 3.53 GHz and 4.0 GHz and displays a phase noise between -118 dBc/Hz and -112dBc/Hz at 3 MHz offset frequency across the tuning frequency range. This low power consumption is achieved through optimized design of LC tank based on power constraints.