A 24-GHz Radar Module for Speed Enforcement and Automotive Application

Worldwide we’re experiencing an ever fast growth of traffic congestion yielding an increasing number of car accidents. The need for higher traffic control efficiency and increased driver safety becomes of primary importance. This thesis presents a solution of 24-GHz continuous-wave and frequency-modulated continuous-wave radar in 65-nm standard digital CMOS technology. The transceiver chipsets include bandgap reference, phase-locked loop, power amplifier, low-noise amplifier, I/Q mixer, poly-phase filter. Subharmonically injection-locked phase-locked loop (SILPLL) and temperature compensation technique are utilized in radar transceiver to provide more stable and accurate result. Measurement result shows that the SILPLL achieves the phase noise of −95dBc/Hz at 1-MHz offset, and root-mean-square jitter is lower than 600fs from −10°C to 80°C. The transceiver front-end also integrated with antenna, analog baseband, power module, digital signal processor and user interface for radar operation. The measurement result of radar module also performed in this thesis. With the power amplifier providing 14.7dBm of output power, and receiver conversion gain of 37.2dB, the radar can detect the speed and direction of vehicles from 50-m away.