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
• 来源期刊: 中国物理B（英文版）
• 年，卷（期）: 2021,（6）
• 所属期刊栏目: ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS
• 页码范围: 311-318
• 页数: 8页
• 语种: 英文
• DOI: 10.1088/1674-1056/abdb23

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.