本論文係以頻率調變連續波雷達原理，研製兩款應用於車輛盲區偵測之24 GHz車用雷達系統，其包含射頻電路、基頻電路及數位訊號處理。雷達射頻模組前端採用Infineon公司之BGT24MTR12積體電路，具備一個發射機及兩個接收機，且使用微帶線設計天線陣列、巴倫器及其他射頻被動元件，以完成射頻電路之佈局。基頻電路包含高通濾波器、差動放大器、微控制器、藍芽模組，其將收發機輸出之基頻訊號經過類比濾波器濾波後，再輸入訊號擷取模組進行類比-數位轉換，透過藍芽模組將訊號傳送至電腦做快速傅立葉轉換。兩款雷達模組分別使用數位轉類比晶片與頻率合成器調變發射訊號，且在論文內比較兩種調變訊號之訊號源及量測結果。在最後進行討論及分析其優缺點。本論文所研製的雷達系統已能滿足商用車用雷達之需求，未來，可安裝在車輛上進行場試。

This thesis develops a 24-GHz automotive radar system based on the frequency modulated continuous wave (FMCW) technology for the vehicle detection in the blind spot area. The developed radar system includes radio-frequency (RF) circuits, baseband circuits and digital-signal-process algorithm. The RF front-end uses Infineon’s BGT24MTR12 integrated circuit (IC), which has a system architecture with one transmitter and two receivers. Furthermore, the antenna array and RF passives are designed using microsrtip technology to achieve the layout of the RF front-end. Additionally, the baseband circuits of the radar system are composed of an active high-pass filter、a differential amplifier、a microcontroller and a Bluetooth module. The outputs of the radar transceiver are first sent into the analog active filter to suppress the crosstalk effects, and then acquired by the microcontroller to perform analog-to-digital conversion (ADC). In this thesis, the digital-to-analog converter (DAC) IC and frequency synthesizer IC are respectively employed to modulate the RF source of the radar chip and then obtain the triangle FMCW chirp signals. The ranging performance and the chirp source linearity of two above-mentioned radar systems are compared and summarized. The measured results demonstrate that the performance of the developed radar system has satisfied the requirements of the commercial automotive radar. In the future, the developed automotive radar can be installed in the vehicle for field trial.

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