Low-Scattering Tri-Band Metasurface Using Combination of Diffusion, Absorption and Cancellation
Low-Scattering Tri-Band Metasurface Using Combination of Diffusion, Absorption and Cancellation
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DOI：
10.1109/access.2018.2810262
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发表时间：
2018-02
期刊：
影响因子：
3.9
通讯作者：
Y. Zhuang;Guangming Wang;Qingfeng Zhang;Cheng Zhou
中科院分区：
文献类型：
--
作者：
Y. Zhuang;Guangming Wang;Qingfeng Zhang;Cheng Zhou
在本文中，我们首次提出了一种新的机制来设计一个三波段低散射超颖表面。雷达散射截面（RCS）在三个工作波段的减少依赖于散射扩散，吸收和散射抵消，分别。扩散超颖表面是通过分布具有不同旋转角的散射单元来实现的。对于吸收，在不同频率下操作的四个单元被组合以实现宽带吸收。通过将两个异相单元排列成棋盘形结构实现了散射抵消。三带元表面通过将三个元表面直接组合在单个组件中来构造。模拟结果与实测结果吻合较好。三波段RCS减缩在45°范围内保持良好，且性能与偏振无关。本文提供了一种用于隐身应用的多波段元表面设计方法。
In this paper, we proposed for the first time a novel mechanism to design a tri-band low-scattering metasurface. The radar cross section (RCS) reduction in the three operational bands relies on scattering diffusion, absorption, and scattering cancellation, respectively. The diffusion metasurface was realized by distributing scattering unit cells with different rotation angles. For the absorption, four units operating at different frequencies were combined to achieve a broadband absorption. The scattering cancellation was realized by arranging two out of phase elements in a chessboard configuration. The tri-band metasurface was constructed by directly combining the three metasurfaces in a single assembly. The simulated and measured results have a good agreement. The tri-band RCS reduction is well preserved up to 45° with polarization-independent performance. This paper provides an alternative approach to design the multi-band metasurface for stealth application.