A Scalable Millimetre-Wave Differential CMOS Cross-Coupled VCO for Automotive Radar Application

摘要

In this paper, a novel method to realize LC Voltage-Controlled-Oscillator (LC-VCO) operating at 76.2-76.7 GHz frequency band for microwave RFIC component is presented. The model of cross-coupled differential LC-VCO is designed in 45 nm technology using Complementary Metal Oxide Semiconductor (CMOS) process for Frequency Modulated Carrier Wave (FMCW) automotive radar sensors and RF transceivers application. The impact of VDD, control voltage and temperature variation on frequency shift, phase noise, and output power has been analyzed to optimize the trade-off between frequency, phase noise, and power requirement. The results depict that LC-VCO dissipates 10.45 mW power at an operating voltage of 1.5 V. The phase noise has been observed to be -90 dBc/Hz at 1 MHz offset at 76 GHz carrier frequency. The estimated layout area of IC is 83 x 73 mu m(2). The result shows the edge of the design over existing techniques.