A 24-GHz Fractional-N Frequency Synthesizer and Microwave Anti-collision RADAR Module

In this thesis, a fully-integrated fractional-N synthesizer operating at 24 GHz which is fabricated in 65-nm TSMC CMOS technology has been realized. The synthesizer achieve the phase noise of -88.47 dBc/Hz at 1-MHz offset, the reference spurs of -49 dBc and the fractional spurs -50 dBc, consuming 84mW from 1.4-V supply. Utilizing a delta-sigma fractional-N synthesizer as the FMCW generator, the synthesizer linearly modulates the carrier frequency across a range of 220 MHz. Further integration has been made with the transceiver front-end as well as an FFT-based baseband processor; this prototype provides a maximum detectable distance exceed 100 meters for a mid-size car while consuming 392 mW from a 1.4-V supply.