應用於5G通訊Ka頻段之功率偵測電路

陳瑀妮

doi:10.6342/NTU201703907

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应用於5G通讯Ka频段之功率侦测电路

Ka-band Power Detectors for 5G Communication

陈瑀妮 , 硕士　　导师：卢信嘉　　

繁体中文 DOI： 10.6342/NTU201703907

低杂讯放大器；迪克开关；次谐波混频器；功率侦测电路；可调增益低杂讯放大器； 5G通讯； low noise amplifier ； Dicke switch ； subharmonic mixer ； 5G communication ； power detector ； variable-gain low noise amplifier

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摘要 │ 参考文献 (80) │ 国际计量

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This thesis studies power detectors, which operate in Ka-band for 5G communication and are proposed to enhance detection capability and verify the property of transmitter systems.
  First, this thesis reviews the architectures of different types of circuits related to power detectors, including detectors, low noise amplifiers and mixers. In addition, this study analyzes the operation principles as well as briefly introduces the functions and applications of the circuit design. Second, the thesis introduces different types of design methods of the common-source amplifier, the continuous variable gain amplifier, the digitally-controlled variable gain amplifier and the subharmonic down-convert mixer.
  This thesis first proposes a fixed gain common-source amplifier. With source degeneration techniques and cascade structure, it achieves high gain of 13.5 dB and low noise. Moreover, it is also integrated with a self-mixing rectifier and an operational amplifier to form a detector with minimum detectable power of -38 dBm. Its DC voltage output range is from 125 mV to 720 mV and power consumption is 31.5 mW. In order to increase its detectable range, we also redesigned a continuous variable gain amplifier. With the increase of gain, smaller power is detectable, and the amplifier consumes only 9 mW power. The second version of VGLNA introduces a digitally-controlled three state variable gain amplifier and applies current-reused technique to reduce noise as well as to enhance gain. Besides, a Dicke switch is also integrated to average and cancel out the flicker noise of transistors, and the design achieves 19 dB gain with noise figure at only 6.3 dB (with switch). On the other hand, to simplify detection and increase dynamic range, this study also proposes a subharmonic down-convert mixer, which realizes 2LO to RF isolation of nearly 60 dB and IP1dB at -3 dBm with transformer.
  In this thesis, the proposed circuits were designed by using ADS and Sonnet for the circuit and EM simulation. The four circuits were: an LNA implemented by TSMC 180 nm CMOS, a continuous VGLNA, a digitally-controlled VGLNA and a subharmonic mixer in CMOS technology 90 nm. The measurement results almost fit the simulation and discussions are given in Chapter 4.

参考文献 ( 80 ) 〈TOP〉

[1]Daekeun Yoon, Kiryong Song, Jungsoo Kim and Jae-Sung Rieh, "Si-based sub-THz heterodyne imaging circuits," Asia-Pacific Microwave Conference, Sendai, Japan, pp. 1136-1138, November 2014.
连结：
[2]C. W. Byeon and C. S. Park, "Design and analysis of the millimeter-wave SPDT switch for TDD applications," IEEE Transactions on Microwave Theory and Techniques, vol. 61, no. 8, pp. 2858-2864, August 2013.
连结：
[3]L. Gilreath, V. Jain, H. C. Yao, L. Zheng and P. Heydari, "A 94-GHz passive imaging receiver using a balanced LNA with embedded Dicke switch," IEEE Radio Frequency Integrated Circuits Symposium, Anaheim, CA, pp. 79-82, June 2010.
连结：
[5]Han-Chih Yeh, Sofiane Aloui, Chau-Ching Chiong and Huei Wang, "A wide gain control range V-band CMOS variable-gain amplifier with built-in linearizer," in IEEE Transactions on Microwave Theory and Techniques, vol. 61, no. 2, pp. 902-913, February 2013.
连结：
[6]R. L. Schmid and J. D. Cressler, "A digitally-controlled seven-state X-band SiGe variable gain low noise amplifier," IEEE Bipolar/BiCMOS Circuits and Technology Meeting (BCTM), Coronado, CA, pp. 187-190, September 2014.
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DOI可强化引用精确性、增强学术圈连结，并给予使用者跨平台的良好使用经验，目前在全世界已有超过五千万个对象申请DOI。如想对DOI的使用与概念有进一步了解，请参考（）。