本論文係研製一型應用於呼吸及心跳量測之非接觸式都卜勒雷達(Doppler radar)量測模組，其中包含具鎖相迴路射頻訊號源、雷達收發子模組、射頻被動電路、天線(antenna)及基頻電路(baseband circuit)。為克服雷達量測零點(null point)現象，本論文係採用直接正交轉換電路架構實現雷達模組。該架構所需之射頻正交訊號源則使用TSMC 0.18 μm CMOS製程研製正交壓控振盪器(quadrature voltage control oscillator，QVCO)，並結合鎖相迴路(phase locked loop，PLL)使射頻訊號源更加穩定，模組所需之其他電路方塊則使用市售積體電路實現。本論文所研製之雷達模組設置於成人受測者前10公分進行量測驗證，所獲得之每分鐘心跳次數與使用接觸式電極片所量測獲得次數吻合。此實驗結果除可驗證雷達系統之有效性及準確性，更具潛力往實際醫療應用發展。

This dissertation presents a Doppler radar module for non-contact human’s respiration and heartbeat detection. The developed radar system includes a radio-frequency (RF) source with the phase locked loop, radar transceiver sub-module, RF passives, antenna, and baseband circuit. In order to overcome the null point effect, the configuration of the quadrature direct conversion is adopted to implement this radar module. The required quadrature RF source is designed and fabricated by the TSMC 0.18 μm CMOS process. Moreover, by combining with the PLL, the stability of the RF source has been significantly improved. The other circuit blocks of the radar module and realized by the commercial integrated circuits. The developed radar module is located at about 10 cm in front of an adult to perform the measurement. The measured heartbeat per minute is in agreement with the results acquired by the convention at electrode. According to the measured results, they not only demonstrate the effectiveness and accuracy of the developed radar system, but also reveal the potential for the practical medical application.

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