本論文係使用TSMC 0.18μm CMOS 製程研製之5.8 GHz自振式混頻器晶片與24 GHz雙推式注入鎖定振盪器晶片。自振式混頻器採用混頻器堆疊至壓控振盪器上之電路架構，讓混頻器電流可被壓控振盪器之交叉耦合對重複利用，藉此達到降低電路面積與功耗之目的。雙推式注入鎖定振盪器設計採用注入鎖定除頻器結合雙推式輸出緩衝器之方式，使電路具24 GHz之注入與輸出埠，同時提供除頻後之12 GHz差動輸出訊號。此外，本論文將雙推式注入鎖定振盪器晶片鎊線封裝於印刷電路板上，搭配市售射頻電路、微分器與收發天線陣列組成24 GHz自我注入鎖定雷達，應用於非接觸式生理訊號感測。該雷達系統置於受測者前50公分處進行量測驗證，觀察人體每分鐘之呼吸及心跳次數，並與血氧濃度計量測結果相比較，驗證雷達系統之有效性。

This thesis develops a 5.8 GHz self-oscillating mixer monolithic integrated circuit (MMIC) and a 24 GHz push-push injection-lock oscillator (PPILO) MMIC using the TSMC 0.18-μm CMOS 1P6M process. The self-oscillating mixer is realized by an individual mixer stacking on a voltage-controlled oscillator (VCO). Therefore, the mixer current can be reused by the VCO for chip area and current reduction. In addition, an injection-locked frequency divider is combined with an injection mixer to form a PPILO. Hence, it can be used to transmit and receive 24-GHz signals and 12-GHz frequency-divided outputs. The PPILO chip is packaged on a print-circuit board, and then connected with commercial low noise amplifier, power detector, baseband amplifier and differentiator , antennas to implement a self-injection-locked radar for human heartbeat and respiration detection. This vital-sign radar can successfully detect the human heartbeat and respiration at a distance of about 50 cm. The measured results are in a good agreement with those acquired by the finger pulse oximeter.

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