曹祥玉,
高军
空军工程大学信息与导航学院 ??西安 ??710077
基金项目:国家自然科学基金(61471389, 61671464, 61701523)
详细信息
作者简介:吉地辽日：男，1993年生，博士生，研究方向为超材料与超材料的天线应用
曹祥玉：女，1964年生，教授，博士生导师，研究方向为天线与电磁兼容、电磁超材料、计算电磁学等
高军：男，1962年生，教授，硕士生导师，研究方向为电磁散射理论、电磁超材料、天线设计等
通讯作者:吉地辽日 jidiliaorikdy@163.com
中图分类号:TN823计量
文章访问数:1104
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被引次数:0
出版历程
收稿日期:2018-03-19
修回日期:2018-10-24
网络出版日期:2018-10-31
刊出日期:2019-01-01
Metasurface Antenna Design with Ultra-wideband RCS Reduction
Liaori JIDI,,Xiangyu CAO,
Jun GAO
Information and Navigation College, Air Force Engineering University, Xi’an 710077, China
Funds:The National Natural Science Foundation of China (61471389, 61671464, 61701523)
摘要
摘要:该文设计了两种人工磁导体(AMC)单元，在8～20 GHz的超宽频带内，两种AMC结构能够实现180°±37° 的反射相位差，将这两种单元组成棋盘结构时，能够实现入射电磁波的散射场相消，从而在超宽的频带内实现棋盘表面法向雷达散射截面(RCS)的显著减缩。同时，利用超表面天线的概念，设计馈电网络，将设计的AMC结构用做天线，仿真发现在9.08～10.30 GHz的范围内，天线的S11小于–10 dB，可以实现天线的有效辐射。实测结果和仿真吻合较好，因此该文的棋盘结构可以实现具有RCS减缩特性的天线设计。
关键词:天线/
棋盘结构/
RCS减缩
Abstract:In this paper, two novel Artificial Magnetic Conductor (AMC) structures, based on circular loop patch and substrate, are designed to realize 180° reflection phase difference in a wide frequency band. These two AMCs’ reflection phase property is applied to redirecting the scattering fields of a radar target to reduce its Radar Cross Section (RCS). This method of RCS reduction can be realized by covering with a chessboard surface composed of two proposed AMC structures, so the RCS reduction in a wide frequency band can be achieved as well. Compared with the same-sized metallic surface, this proposed chessboard surface can reduce RCS drastically from 8 to 20 GHz under normally incident waves, and the RCS also can be reduced under obliquely incident waves. Meanwhile, this surface also can be used as antenna. By precisely designing feed network, the metasurface antenna can be designed. This antenna also has a low profile. The simulated impedance matching frequency band is from 9.08 to 10.30 GHz. Excellent agreement is obtained between simulation and measurement for metasurface antenna and chessboard surface. Such method gives a method for integrated design of antenna and metasurface, so the RCS reduction can be achieved, at the same time the radiation properties can be maintained.
Key words:Antenna/
Chessboard surface/
RCS reduction
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https://jeit.ac.cn/article/exportPdf?id=4c489b8c-37b6-4ece-8ec6-1e0a88df9dbb
