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技術名稱 Technology
發明人 Inventor
曾昭雄, 林沂樺,
所有權人 Asignee 國立臺灣科技大學

專利國家 Country 申請號 Application No. 專利號 Patent No. 中心案號 Serial No.
中華民國 108116438 I685205 1070042TW0
美國 16/807,338 申請中 1070042US0
  點閱數:252

技術摘要:
A 24-GHz CMOS injection-locked frequency divider (ILFD) based on the push-push oscillator topology is designed and fabricated. It is further treated as the kernel component of a self-injection-locked (SIL) radar sensor for noncontact vital-sign detection. The push-push topology is employed to double the oscillation frequency of the 12-GHz LC oscillator to provide the 24-GHz transmitting signal of the radar sensor, while the direct injection-locked configuration is used to divide the receiving 24-GHz injection signal by 2. Hence, the 12-GHz output of the ILFD can be connected with a differentiator-based envelope detector for vital-sign demodulation. By packaging the developed ILFD chip and connecting it with two antennas, a gain block, and a differentiator-based envelope detector, a 24-GHz SIL radar sensor can be built to detect the physiological chest movement of a human subject. The feasibility of developing a SIL radar sensor in the millimeter-wave range is also demonstrated.

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