A True Metasurface Antenna.
A True Metasurface Antenna.
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DOI：
10.1038/srep19268
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发表时间：
2016-01-13
影响因子：
4.6
通讯作者：
Ramahi OM
中科院分区：
文献类型：
--
作者：
El Badawe M;Almoneef TS;Ramahi OM
我们提出了一种基于电小谐振器的真正的超表面天线。谐振器放置在平面上，并使用公司馈电连接到一个馈电点。与传统的阵列天线不同，相邻天线之间的距离为半波长，以减少相邻天线之间的相互耦合，这里的辐射元件之间的距离在电上非常小，以影响每个谐振器与其馈电的良好阻抗匹配。设计工作频率为3ghz的1.2λ × 1.2λ超表面天线的增益为12dbi。制作了样机并进行了测试，结果表明数值模拟与实验结果吻合较好。通过数值模拟，我们证明了超表面天线通过适当地相位所有谐振器具有提供波束导向的能力。
We present a true metasurface antenna based on electrically-small resonators. The resonators are placed on a flat surface and connected to one feed point using corporate feed. Unlike conventional array antennas where the distance between adjacent antennas is half wavelength to reduce mutual coupling between adjacent antennas, here the distance between the radiating elements is electrically very small to affect good impedance matching of each resonator to its feed. A metasurface antenna measuring 1.2λ × 1.2λ and designed to operate at 3 GHz achieved a gain of 12 dBi. A prototype was fabricated and tested showing good agreement between numerical simulations and experimental results. Through numerical simulation, we show that the metasurface antenna has the ability to provide beam steering by phasing all the resonators appropriately.