Polarization-insensitive wide-angle-reception metasurface with simplified structure for harvesting electromagnetic energy
Polarization-insensitive wide-angle-reception metasurface with simplified structure for harvesting electromagnetic energy
复制标题
DOI：
10.1063/1.5046927
复制
发表时间：
2018-09-17
影响因子：
4
通讯作者：
Gao, Steven
中科院分区：
文献类型：
--
作者：
Yu, Fan;Yang, Xuexia;Gao, Steven
本文报道了一种具有宽角度接收和偏振不敏感特性的超表面的设计、制造和测量。与文献中报道的具有多个通孔的超颖表面单元不同，它使用单个通孔实现偏振不敏感特性，这显著降低了结构的复杂性。研究了垂直入射和斜入射时的能量收集和吸收效率、能量分布以及不同极化角下的表面电流。仿真结果表明，在0 °垂直入射的任意极化情况下，中心频率为5.8GHz时，最大捕获效率为88%.在75 °斜入射范围内，对于随机偏振，最大效率保持在77%以上。制作了一个5 × 5阵列，并进行了测试，结果与模拟结果吻合较好。由AIP出版社出版。
This paper reports the design, fabrication, and measurement of a metasurface with wide-angle-reception and polarization-insensitive characteristics for harvesting electromagnetic energy. Unlike the metasurface unit cell with multiple vias reported in the literature, it realizes polarization-insensitive characteristics using a single via, which reduces the complexity of the structure significantly. The harvesting and absorption efficiencies at the normal and oblique incidences, energy distribution, and the surface current for different polarization angles are investigated. The simulation results show that the maximum harvesting efficiency is 88% at the center frequency of 5.8 GHz for the arbitrary polarization at the normal incidence of 0 degrees. Within the oblique incidence range of 75 degrees, the maximum efficiency remains higher than 77% for the random polarization. A 5 x 5 array has been fabricated and measured, and the good agreement with the simulated results is obtained. Published by AIP Publishing.