Characteristic mode analysis of wideband high-gain and low-profile metasurface antenna  

作　　者：Kun Gao Xiang-Yu Cao Jun Gao Huan-Huan Yang Jiang-Feng Han 高坤;曹祥玉;高军;杨欢欢;韩江枫(Information and Navigation College of Air Force Engineering University,Xi'an 710077,China)

机构地区：[1]Information and Navigation College of Air Force Engineering University,Xi'an 710077,China

出　　处：《Chinese Physics B》2021年第6期275-281,共7页中国物理B（英文版）

基　　金：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);the Natural Science Research Fund of Shaanxi Province,China (Grant No. 2019JQ-103)。

摘　　要：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.

关 键 词：characteristic mode analysis WIDEBAND high gain metasurface antenna 

分 类 号：TN820[电子电信—信息与通信工程]