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oe1(光电查) - 科学论文

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  • [IEEE 2019 IEEE 4th International Conference on Integrated Circuits and Microsystems (ICICM) - Beijing, China (2019.10.25-2019.10.27)] 2019 IEEE 4th International Conference on Integrated Circuits and Microsystems (ICICM) - A 71.8-87.9 GHz CMOS Injection-Locked Frequency Divider with Coupled Inductance

    摘要： In this paper, a technique of inductor coupling is used to optimize the bandwidth of the injection-locked transformer. This design replaces the inductance of a conventional injection-locked divider with a transformer consists by two coupled inductance, each has its own independent cross-coupled pair. This design is based on 40nm- CMOS technology, with a supply voltage of 0.9V, the post- simulation results achieve a locking range of 71.8-87.9GHz with an injected signal of 0dBm, and the core chip size is 88×130μm2.

    关键词： coupled,transformer,locking range,CMOS,injection-locked frequency divider (ILFD)

    更新于2025-09-23 15:21:01

  • 24-GHz Self-Injection-Locked Vital-Sign Radar Sensor With CMOS Injection-Locked Frequency Divider Based on Push-Push Oscillator Topology

    摘要： In this letter, 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, a differentiator-based envelope detector, and 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.

    关键词： self-injection-locked (SIL) radar,push–push oscillator,noncontact vital-sign sensor,Continuous-wave (CW) radar,injection-locked frequency divider (ILFD)

    更新于2025-09-09 09:28:46