24-GHz分數型頻率合成器及微波防撞雷達模組

Abstract

在本論文中以台積電65奈米製程實現了一個操作在24-GHz完全整合的分數型頻率合成器。本頻率合成器達到在1 MHz偏移頻率下 -88.47 dBc/Hz 的相位雜訊，-49 dBc的參考突波，及 -50dBc的分數突波，在1.4伏特的供應電壓下消耗84毫瓦之功率。使用三角積分分數型頻率合成器作為連續波頻率調變產生器，本頻率合成器線性地調變載波頻率達220MHz。進一步與收發機前端及以快速傅利葉轉換為基礎的基頻處理器整合，在1.4伏特的供應電壓下消耗392毫瓦之功率，本原型最遠可以偵測到100公尺外的中型轎車。

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.