A dual-band VCO using inductor splitting for automotive radar system at W-band

Abstract

A dual-band VCO (Voltage Controlled Oscillator) for automotive radar system is proposed by 65nm CMOS process. The proposed VCO is splitting inductor and NMOS cross-coupled differential LC type and includes output matching buffer. The output frequencies of VCO are 76.4∼77.1GHz and 78.5∼ 80GHz. These frequency bands are proper to long-range and short-range radar sensor system of automotive radar at W-band. The simulation results show the output power of-8.4dBm and the phase noise of-90.8dBc/Hz at 1MHz offset and-113.3dBc/Hz at 10MHz offset. The power consumption of the proposed VCO is 30mW at the supply voltage of 1.2V. The proposed VCO shows good figure of merit (FOM) of-176.6dBc/Hz. © 2014 IEEE.