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