A Low-Voltage 12GHz VCO in 0.13 m µ CMOS for OFDM Applications

Abstract – A ,low voltage 12GHz VCO is fabricated in a 0.13µm CMOS process. The VCO with a 0.8V supply consumes 6mA. The measured ,phase noise is -84dBc/Hz at 100kHz and ,-106dBc/Hz at 1MHz offset from the center frequency. Design optimization ,techniques ,for ,high performance,VCOs in a ,low voltage CMOS process are discussed. Index Terms — CMOS, VCO, High Frequency, Low Voltage,