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Qianwen LIU, Lei ZHU, Wenjun LU, “Self-Decoupled Square Patch Antenna Arrays by Exciting and Using Mixed Electric/Magnetic Coupling between Adjacent Radiators,” Chinese Journal of Electronics, vol. 33, no. 4, pp. 1–12, 2024 doi: 10.23919/cje.2023.00.222
Citation: Qianwen LIU, Lei ZHU, Wenjun LU, “Self-Decoupled Square Patch Antenna Arrays by Exciting and Using Mixed Electric/Magnetic Coupling between Adjacent Radiators,” Chinese Journal of Electronics, vol. 33, no. 4, pp. 1–12, 2024 doi: 10.23919/cje.2023.00.222

Self-Decoupled Square Patch Antenna Arrays by Exciting and Using Mixed Electric/Magnetic Coupling between Adjacent Radiators

doi: 10.23919/cje.2023.00.222
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  • Author Bio:

    Qianwen LIU received the B.E. and Ph.D. degrees from the Nanjing University of Science and Technology, Nanjing, China, in 2014 and 2020, respectively. In 2017 and 2019, she was a Research Assistant at the Faculty of Science and Technology, University of Macau, Macau, SAR, China. She joined the College of Telecommunications and Information Engineering, Nanjing University of Posts and Telecommunications, Nanjing, as a Lecturer, in December 2020. Her research interests include microwave circuits and antennas. (Email: aliuqw@163.com)

    Lei ZHU received the B.Eng. and M.E. Degrees in Radio Engineering from the Nanjing Institute of Technology (now Southeast University), Nanjing, China, in 1985 and 1988, respectively, and the Ph.D. degree in Electronic Engineering from the University of Electro-Communications, Tokyo, Japan, in 1993. From 1993 to 1996, he was a Research Engineer with Matsushita-Kotobuki Electronics Industries Ltd., Tokyo, Japan. From 1996 to 2000, he was a Research Fellow with the École Polytechnique de Montréal, Montréal, QC, Canada. From 2000 to 2013, he was an Associate Professor with the School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore. He joined the Faculty of Science and Technology, University of Macau, Macau, China, as a Full Professor in August 2013, and has been a Distinguished Professor since December 2016. From August 2014 to August 2017, he served as the Head of Department of Electrical and Computer Engineering, University of Macau. So far, he has authored or coauthored more than 740 papers in international journals and conference proceedings. His papers have been cited more than 14,670 times with the H-index of 60 (source: Scopus). His research interests include microwave circuits, antennas, periodic structures, and computational electromagnetics. Dr. Zhu was the Associate Editors for the IEEE Transactions on Microwave Theory and Techniques (2010-2013) and IEEE Microwave and Wireless Components Letters (2006-2012). He served as a General Chair of the 2008 IEEE MTT-S International Microwave Workshop Series on the Art of Miniaturizing RF and Microwave Passive Components, Chengdu, China, and a Technical Program Committee Co-Chair of the 2009 Asia–Pacific Microwave Conference, Singapore. He served as the member of IEEE MTT-S Fellow Evaluation Committee (2013-2015), and as the member of IEEE AP-S Fellows Committee (2015-2017). He was the recipient of the 1997 Asia–Pacific Microwave Prize Award, the 1996 Silver Award of Excellent Invention from Matsushita-Kotobuki Electronics Industries Ltd., the 1993 Achievement Award in Science and Technology (first prize) from the National Education Committee of China, the 2020 FST Research Excellence Award from the University of Macau, and the 2020 and 2022 Macao Natural Science Awards (Second Prize) from the Science and Technology Development Fund (FDCT), Macau. (Email: leizhu@um.edu.mo)

    Wenjun LU was born in Jiangmen, Guangdong Province, China, in 1978. He received Ph.D. degree in Electronic Engineering from the Nanjing University of Posts and Telecommunications (NUPT), Nanjing, China, in 2007. He has been a Professor with the Jiangsu Key Laboratory of Wireless Communications, NUPT, since 2013. His research interests include antenna theory, antenna design, antenna arrays, and wireless propagation channel modelling. From 2015 to 2016, he invented the design approach to planar endfire circularly polarized antennas. Recently, he has rediscovered the concept of 1-D multi-mode resonant dipoles and advanced multi-mode resonant design approach to elementary antennas. He is the translator of the Chinese version The Art and Science of Ultrawideband Antennas (by H. Schantz). He has authored two books, Antennas: Concise Theory, Design and Applications (in Chinese, 2014), and its 2nd edition of Concise Antennas (in Chinese, 2020). He has authored or co-authored over 200 technical papers published in peer-reviewed international journals and conference proceedings. He was a recipient of the Exceptional Reviewers Award of the IEEE Transactions on Antennas and Propagation in 2016 and 2020, and the Outstanding Reviewers Award of the AEÜ: Int. J. of Electronics and Communications in 2018. He has been serving as an Editorial Board Member of the International Journal of RF and Microwave Computer-Aided Engineering since 2014, and an Associate Editor of the Electronics Letters since 2019. He’s a Committee Member of the Antennas Society of Chinese Institute of Electronics (CIE). He’s a Senior Member of the CIE and the IEEE. (Email: wjlu@njupt.edu.cn)

  • Corresponding author: Email: aliuqw@163.com
  • Received Date: 2023-06-26
  • Accepted Date: 2023-11-13
  • Available Online: 2024-02-24
  • This article presents and develops a simple decoupling method for the planar square patch antenna arrays by virtue of mixed electric and magnetic coupling property. Since the resonant modes of TM10 and TM01 are a pair of degenerate modes in the square patch radiator which are intrinsically orthogonal, a superposed mode of them can be generated to possess consistent field distributions along all the four sides of the patch by adjusting the feeding position. By employing such superposed mode, the mutual coupling between two horizontally adjacent patch elements will become identical to that between two vertical ones, indicating an expected possibility that the complex 2-D decoupling problem in a large-scale antenna patch array can be effectively facilitated and simplified to a 1-D one. Subsequently, metallic pins and connecting strip are properly loaded in each square patch resonator, such that appropriate electric and magnetic coupling strengths can be readily achieved and thus the mutual coupling can get highly decreased. A 1×2 antenna array with an edge-to-edge separation of 1mm, which corresponding to 0.0117λ0, is firstly discussed, simulated, and fabricated. The measured results show that the isolation can be highly improved from 4 dB to 17 dB across the entire passband. In final, 1×3, 2×2, and 4×4 antenna array prototypes are constructed and studied for verification of the expansibility and feasibility of the proposed decoupling method to both linear and 2-D antenna arrays.
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