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Characteristic mode analysis of wideband high-gain and low-profile metasurface antenna |
Kun Gao(高坤)†, Xiang-Yu Cao(曹祥玉)‡, Jun Gao(高军), Huan-Huan Yang(杨欢欢), and Jiang-Feng Han(韩江枫) |
Information and Navigation College of Air Force Engineering University, Xi'an 710077, China |
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Abstract A wideband high-gain and low-profile metasurface antenna is proposed by analyzing characteristic quantities and parameters in the characteristic modes (CMs). The detailed modal current and modal weighting coefficient are analyzed to explain the broadband operation and high gain. A dominant characteristic mode is well excited, leading to a broadband operation. The mode behaviors of the excitation are changed to suppress the unwanted higher-order modes and improve the radiation performance by changing the widths of two patches. The measured impedance bandwidth for -10 dB is 39.8% (5.3 GHz-7.94 GHz) with a gain of 7.8 dBi-10.04 dBi over the operating bandwidth.
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Received: 06 October 2020
Revised: 24 December 2020
Accepted manuscript online: 13 January 2021
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PACS:
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41.20.Jb
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(Electromagnetic wave propagation; radiowave propagation)
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73.20.Mf
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(Collective excitations (including excitons, polarons, plasmons and other charge-density excitations))
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Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 61671464 and 61801508), the Postdoctoral Innovative Talents Support Program of China (Grant No. BX20180375), and the Natural Science Research Fund of Shaanxi Province, China (Grant No. 2019JQ-103). |
Corresponding Authors:
Kun Gao, Xiang-Yu Cao
E-mail: gkmicrowave@163.com;xiangyucaokdy@163.com
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Cite this article:
Kun Gao(高坤), Xiang-Yu Cao(曹祥玉), Jun Gao(高军), Huan-Huan Yang(杨欢欢), and Jiang-Feng Han(韩江枫) Characteristic mode analysis of wideband high-gain and low-profile metasurface antenna 2021 Chin. Phys. B 30 064101
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