摘要
用于在多频带、极化方式多样、宽入射角度的复杂电磁环境中有效收集电磁能量,提出了一个超材料单元,它由8个开口谐振环并按照正八边形排列,内部添加一个正八边形的寄生贴片。8个相同的开口谐振环经旋转排列,结合内部的寄生贴片形成中心对称结构,设计了一种新颖的电磁能量收集表面,具有多频、宽入射角度、极化不敏感的工作特性。使用微波仿真软件CST对组成该电磁能量收集表面的超材料单元的结构尺寸进行了分析和优化,对垂直入射的电磁波的电磁能量收集效率、单元上的能量分布以及S参数进行了研究。仿真结果表明,当电磁波垂直入射时,在5.75、6.5、6.84、7.56、7.98、8.55 GHz 6个频点处分别达到82%、79%、61%、71%、70%、73%的最大收集效率;在0°~60°以20°为间隔的斜入射下,该表面对TE波和TM波都可以保持有效的收集效率。
In order to harvesting electromagnetic（EM） energy effectively in the complex electromagnetic environment, a novel metasurface is proposed, whose unit consists of eight open resonant loops and is arranged in a regular octagon, with the addition of a parasitic patch of regular octagon. Eight resonant rings with the same opening are arranged in rotation, and the inner parasitic patch is used to form a central symmetrical structure. A novel electromagnetic energy collecting surface is designed, which has multi-frequency and polarization-insensitive working characteristics. The microstructures of the metamaterials are analyzed and optimized by the microwave simulation software CST. The electromagnetic energy collection efficiency, the energy distribution and the S parameters of the incident electromagnetic waves are studied. The simulation results show that the maximum collection efficiencies of 82 %, 79 %, 61%, 71%, 70% and 73% at five frequencies of 5.75, 6.5, 6.84, 7.56, 7.98 and 8.55 GHz when the electromagnetic waves are incident vertically ;In the 0° to 60° at 20° interval oblique incidence, the surface of the TE wave and TM wave can maintain an effective collection efficiency.
作者
王卫宾
周永金
Wang Weibin Zhou Yongjin(Key Laboratory of Specialty Fiber Optics and Optical Access Networks, Shanghai University, Shanghai 200072, Chin)
出处
《电子测量技术》
2017年第9期6-9,共4页
Electronic Measurement Technology
基金
国家自然科学基金(61307129)
上海市科学技术委员会(13ZR1454500)
高等学校博士学科点专项科研基金(20133108120016)资助项目
关键词
多频
极化不敏感
宽入射角度
电磁能量收集
multi-frequency
polarization-insensitivity
wide-angle
electromagnetic energy harvesting
