Frequency scanning non-diffraction beam by metasurface
Frequency scanning non-diffraction beam by metasurface
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DOI：
10.1063/1.4974210
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发表时间：
2017-01
影响因子：
4
通讯作者：
Bo Cheng;Dawei Liu;Jiawen Wu;Hongliang Li
中科院分区：
文献类型：
--
作者：
Bo Cheng;Dawei Liu;Jiawen Wu;Hongliang Li
提出了一种能够形成无衍射光束的反射超颖表面。该元表面是基于人工导纳调制表面设计的，并利用接地介质基底上的金属方形贴片来构建整个表面。该光束能随频率的变化而改变其传播方向，具有良好的无衍射特性。制作了超颖表面，测试结果表明该超颖表面具有良好的无衍射光束产生性能。
A reflective metasurface that can form a non-diffraction beam is proposed in this article. This metasurface is designed based on the artificial admittance modulation surface, and the metallic square patch on the grounded dielectric substrate is utilized to construct the whole surface. The beam can change its propagation direction with the change of frequency and have good non-diffraction characteristics. The metasurface is fabricated, and the measurement results demonstrate good performance of generating non-diffraction beams.