Wideband radar cross‐section reduction of microstrip patch antenna using coding metasurface
Wideband radar cross‐section reduction of microstrip patch antenna using coding metasurface
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DOI：
10.1049/iet-map.2018.6150
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发表时间：
2019-04
期刊：
影响因子：
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通讯作者：
Jianxing Li;T. Khan;Xianjia Meng;Juan Chen;Gantao Peng;A. Zhang
中科院分区：
文献类型：
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作者：
Jianxing Li;T. Khan;Xianjia Meng;Juan Chen;Gantao Peng;A. Zhang
本文提出了一种宽频带减小雷达截面的微带贴片天线的设计。通过集成优化的编码元表面，减小了贴片天线的RCS。编码超表面是通过将人工磁导体（AMC）单元单元放置在一起设计的，在宽频率范围内实现180±37°的相位差。该贴片天线的带外RCS从12.2 GHz降低到19.8 GHz，相对带宽降低了48%，在18 GHz时最大降低了20 dB。该天线的工作频率为8.7 GHz， RCS降低主要集中在Ku频段。对该贴片天线的单稳态和双稳态RCS性能进行了仿真研究。所提出的编码元表面对贴片天线的辐射性能几乎没有影响。详细的设计考虑以及仿真和测量结果提出和讨论。实测结果与仿真结果吻合较好，验证了所提天线的有效性。
This article proposes a design of a microstrip patch antenna with reduced radar cross-section (RCS) in a wide frequency band. The RCS of the patch antenna is reduced with the integration of an optimised coding metasurface. The coding metasurface is designed by placing artificial magnetic conductor (AMC) unit cells together to achieve a phase difference between 180 ± 37° within a wide frequency range. The out-of-band RCS for the proposed patch antenna is reduced >7 dB from 12.2 to 19.8 GHz, corresponding to a relative bandwidth of 48%, with a maximum reduction of 20 dB at 18 GHz. The operating frequency of the proposed antenna is 8.7 GHz and the RCS reduction is mainly in the Ku band. Both monostatic and bistatic RCS performance of the proposed patch antenna have been simulated and studied. The radiation performance of the proposed patch antenna is hardly influenced by the employment of the proposed coding metasurface. Details of the design considerations along with the simulation and measurement results are presented and discussed. The measured results are in a good agreement with the simulated ones, verifying the validity of the proposed antenna.