本論文研製應用於新生兒監測之24 GHz非接觸式生理訊號感測雷達模組，該模組包含射頻電路、基頻電路、微控制器、藍芽模組與兩型天線陣列。因24 GHz雷達晶片輸出兩組互為正交之差動基頻訊號，論文中將設計基頻電路將差動訊號轉換為單端訊號，且由微控制器將類比基頻訊號轉換為數位訊號，再透過藍芽模組將訊號傳至電腦，以NI LabVIEW進行訊號處理。本論文使用2 2天線陣列雷達模組A量測新生兒之生理參數，量測距離約為10-15 cm，雷達模組可成功量測新生兒呼吸及心跳頻率。使用4 5天線陣列雷達模組B量測成人之生理參數，其結果與醫療級血氧濃度計比較，每分鐘心跳誤差次數約為1次，誤差百分比約為1.3 %。

This thesis presents a 24-GHz non-contact radar module for infant vital-sign monitoring. The developed radar module includes radio-frequency (RF) circuits, microcontroller (MCU), baseband circuits, Bluetooth module and two types of antenna arrays. In order to convert quadrature output differential signals of the 24-GHz radar chip to single-ended signals, the baseband circuit is designed for signal transformation and providing a proper amplification. The analog signals are then acquired by the MCU, and sent to the computer via Bluetooth module. The digitized signals are further processed by NI LabVIEW. The radar module A with the 2 2 antenna array is arranged at distance of 15 cm from the back of an infant, and applied to detect its vital sign. The developed radar system has successfully detected the respiration and heartbeat rates of an infant. On the other hand, the radar module B with the 4 5 antenna array is employed to measure the vital signs of a human adult. As compared with the results of a finger pulse oximeter, the heartbeat error of the developed radar module is 1 beat per minute, namely a percentage error of 1.3 %.

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