用于微波无线能量传输的高效率惠更斯超表面透射阵  

High Efficiency Huygens′ Metasurface Transmitarray for Microwave Power Transmission

作　　者：苏东平 张淮清[1] 肖辉 熊汉 肖冬萍[1] SU Dong-ping;ZHANG Huai-qing;XIAO Hui;XIONG Han;XIAO Dong-ping(State Key Laboratory of Power Transmission Equipment&System Security and New Technology,Chongqing University,Chongqing 400044,China)

机构地区：[1]重庆大学输配电装备及系统安全与新技术国家重点实验室,重庆400044

出　　处：《微波学报》2023年第3期7-11,共5页Journal of Microwaves

基　　金：重庆市技术创新与应用发展专项重点项目(cstc2019jscx-dxwtBX0001);成渝地区双城经济圈建设科技创新重点项目(KJCXZD2020001);重庆市教委科学技术研究项目(KJZD-K202000103)。

摘　　要：设计了一款工作在5.8 GHz用于微波无线能量传输的双层惠更斯超表面透射阵天线。惠更斯单元由一对1 mm厚的反对称E形单元构成,同时实现360°相位控制和高传输幅度(-0.82 dB)。该设计突破了传统双层频率选择表面的限制,同时提高了透射阵的辐射性能。透射阵尺寸为380 mm×380 mm,实测结果表明透射阵增益达到26 dB,口径效率为58.7%。在微波无线能量传输外场实验中,测试距离达到18 m,加载透射阵后,接收功率最高获得8.3 dB的增幅。A double-layer Huygens′metasurface transmitarray is presented for the 5.8 GHz microwave power transmission(MPT).The novel Huygens′ unit consists of a pair of anti-symmetric E-shaped patches of 1 mm(λ/51.7) thickness,providing the transmission phase range coverage of 360° to achieve high transmission amplitude(-0.82 dB).It breaks through the phase shift limitation of the traditional double-layer frequency selective surface element.Moreover,the high transmission efficiency results in superior radiation performance of the proposed transmitarray.The aperture area of the transmitarray prototype is 380 mm×380 mm,and the measured results show that the antenna′s gain could be achieved at 26 dB with an aperture efficiency of 58.7%.The metasurface leads to an 8.3 dB increase in received power for microwave power transmission across an 18-meter distance.

关 键 词：惠更斯超表面 透射阵 微波无线能量传输 

分 类 号：TM724[电气工程—电力系统及自动化]