Design of Electronically Controlled Filter Power Divider Based on Liquid Crystal

作者

  • Wenjie Shen School of Electrical Engineering, Southwest Jiaotong University, Chengdu 610031, China and China Railway Engineering Consulting Group Co., Ltd., Beijing 100055, China
  • Ying Han School of Electrical Engineering, Southwest Jiaotong University, Chengdu 610031, China
  • Weirong Chen School of Electrical Engineering, Southwest Jiaotong University, Chengdu 610031, China
  • Di Jiang School of Information and Communication Engineering, University of Electronic Science and Technology of China, Chengdu 611731, China
  • Sha Luo School of Information and Communication Engineering, University of Electronic Science and Technology of China, Chengdu 611731, China
  • Tianming Bai School of Information and Communication Engineering, University of Electronic Science and Technology of China, Chengdu 611731, China

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https://doi.org/10.13052/2022.ACES.J.370111

关键词:

─ Electronically controlled tuning, Filter power divider, Liquid crystal material

摘要

The wireless communication system is one of the most important facilities of fuel cell hybrid power tram (FCHPT), which provides a strong guarantee for efficient and safe operation. As an indispensable part of the RF front-end of the transmitter and receiver, the miniaturization and high-performance trends of filtering power dividers are becoming evident. Based on the principle of filter power divider, a capacitor loaded power divider filter is designed and fabricated in this paper. The center frequency of the designed power divider filter is 30 GHz, the return loss S11 is less than −10 dB in the range from 29.2 to 31.6 GHz, and the insertion losses S21 and S31 are less than 5.3 dB. The frequency shift of 1.8 GHz can be achieved by changing the dielectric constant of the liquid crystal with an applied bias voltage, which can be used in millimeter wave communication system.

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Wenjie Shen received the bachelor’s degree in electrical engineering from Beijing Jiaotong University, Beijing, China, in 2004, and the master’s degree in electrical engineering from Tsinghua University, Beijing, China, in 2013. He is currently working toward the doctor’s degree.

He is currently a Senior Engineer and Vice President of China Railway Engineering Consulting Group Co., Ltd. His research interests include the design of railway and metro traction power supply systems.

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Ying Han received the B.S. and Ph.D. degrees from the School of Electrical Engineering, Southwest Jiaotong University, Chengdu, China, in 2013 and 2019, respectively.

He is a Visiting Scholar with the School of Information Technology and Electrical Engineering, University of Queensland, Brisbane, Australia. He is a Senior Member of IEEE and an Assistant Professor with the School of Electrical Engineering, Southwest Jiaotong University. His research interests include optimal control of fuel cell locomotives, energy management of hybrid systems, and optimization and control of integrated energysystems.

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Weirong Chen received the B.S. and M.S. degrees in electronic engineering from the Electronic Science and Technology University, Chengdu, China, in 1985 and 1988, respectively, and the Ph.D. degree in power system and its automation from Southwest Jiaotong University, Chengdu, China, in 1998.

He is currently a Senior Visiting Scholar with Brunel University, London, U.K., in 1999. He is an IET Fellow and Professor with the School of Electrical Engineering, Southwest Jiaotong University. His research interests include renewable energy and its applications, fuel cell locomotive technology, and power systemcontrol.

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Di Jiang is currently an Associate Professor and Doctoral Advisor of Information and Communication Engineering with the University of Electronic Science and Technology of China, Chengdu, China. He is mainly engaged in broadband reconfigurable microwave devices, array antennas, and other research.

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Sha Luo is currently a graduate student of Information and Communication Engineering with the University of Electronic Science and Technology of China, Chengdu, China. He loves learning new knowledge, likes to contact new things, is willing to communicate with people, and have a sense of responsibility. In the graduate stage, he studied in the direction of RF and microwave. His main research topics are reconfigurable antenna and passive components. He designed passive phased array antenna, holographic antenna, phase shifter, filter power divider, microstrip log periodic antenna, waveguide slot antenna, etc.

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Tianming Bai is currently a graduate student of Information and Communication Engineering with the University of Electronic Science and Technology of China, Chengdu, China. His main research direction is conformal antenna, reflection array antenna, phased arrayantenna, etc.

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已出版

2022-01-31

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[1]
W. . Shen, Y. . Han, W. . Chen, D. . Jiang, S. . Luo, 和 T. . Bai, 《Design of Electronically Controlled Filter Power Divider Based on Liquid Crystal》, ACES Journal, 卷 37, 期 1, 页 93–101, 1月 2022.

期

2022: Vol 37 Iss 1

栏目

General Submission