A Thin Self‐Feeding Janus Metasurface for Manipulating Incident Waves and Emitting Radiation Waves Simultaneously,Annalen Der Physik

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A Thin Self‐Feeding Janus Metasurface for Manipulating Incident Waves and Emitting Radiation Waves Simultaneously
Annalen Der Physik ( IF 2.2 ) Pub Date : 2020-04-13 , DOI: 10.1002/andp.202000020
Si Jia Li _{1,

2} , Yun Bo Li ₁ , He Li ₁ , Zheng Xing Wang ₁ , Chen Zhang ₂ , Ze Xu Guo ₂ , Rui Qi Li ₁ , Xiang Yu Cao ₂ , Qiang Cheng ₁ , Tie Jun Cui ₁

Affiliation

A thin metasurface has shown powerful capabilities in controlling either incident electromagnetic (EM) waves or radiation waves, but is difficult for both. Here, a self‐feeding Janus metasurface (SFJ‐MS) is proposed to manipulate the incident EM waves and emit the radiated waves simultaneously, which can realize the polarization conversion of incident waves, scattering control, EM wave radiation, and radiation‐beam steering. On the upper of SFJ‐MS, a diagonal‐split square ring and a rectangular patch with rotation for radiation are designed to introduce anisotropy in the meta‐atom for converting the polarization of incident EM waves. On the bottom of SFJ‐MS, a self‐feeding microstructure converts the alternating current into the excitation of SFJ‐MS to emit the EM waves to free space. The multiple functions of SFJ‐MS are comprehensively substantiated by measured results, which are in agreements with the stringent simulations. This SFJ‐MS, with lightweight, compact, low profile, and power‐efficient features, can find potential applications in phased array radar systems, wireless communication systems, polarimetric radar imaging systems, and target detection systems.

中文翻译：

可同时处理入射波和辐射波的薄型自给式Janus超颖表面

薄的超颖表面已显示出强大的控制入射电磁波（EM）或辐射波的能力，但两者都很难。在这里，提出了一种自馈式Janus超表面（SFJ-MS）来操纵入射的电磁波并同时发射辐射波，从而可以实现入射波的极化转换，散射控制，电磁波辐射以及辐射束转向。在SFJ-MS的上部，设计了一个对角线分裂的方形环和一个旋转辐射的矩形斑块，目的是在亚原子中引入各向异性，以转换入射EM波的极化。在SFJ-MS的底部，一个自供电微结构将交流电转换为SFJ-MS的激励，从而将EM波发射到自由空间。SFJ-MS的多功能功能可通过测量结果得到充分证实，这与严格的模拟相符。这款SFJ-MS具有轻巧，紧凑，外形小巧和省电的特点，可以在相控阵雷达系统，无线通信系统，极化雷达成像系统和目标检测系统中找到潜在的应用。

更新日期：2020-04-13

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