| Summary: | 碩士 === 國立臺灣科技大學 === 電機工程系 === 106 === A 28-30 GHz RF front-end circuit for non-invasive glucose sensing system is designed and fabricated in a standard TSMC 90nm CMOS process. The LNA achieves the power gain of 19.43 dB at 29 GHz and the minimum noise figure of 6 dB at 29 GHz. The supply voltage and current consumptions are 1.2 V and 21.9 mA, respectively. Based on the micro-mixer, the impedance between LNA output and mixer input of 50 Ω is achieved.
The mixer performs frequency translation from the 28-30 GHz band to 10 MHz. Simulation results show the conversion gain of 2~3 dB, the IIP3 ¬of -7¬¬ dBm and the NF of 26 dB can be achieved. Operating from the 1.2-V supply, the mixer consumes the current of 0.83 mA.
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