摘要
设计了一种用于X波段和Ku波段电磁能量收集的可扩展宽频超表面能量收集器,其由周期性结构单元、整流器和负载组成。通过结构单元相互连接构建能量传输通道,实现入射能量的传输和聚集,进而增强了超表面能量收集器捕获能量的能力。通过超表面阵列和整流器的共面集成设计,减少了能量传输中的功率损耗,并简化了结构。仿真结果表明,该超表面能量收集器在6.5~19 GHz频带下具有良好的吸收,在12.75 GHz谐振频率下具有98%的半功率带宽。对制备的10×9的超表面有限阵列进行测试,结果表明,在可用输入功率为16 dBm时,超表面能量收集器的射频-直流转换效率最高可达56.2%。设计的超表面能量收集器具有宽带吸收、阵列数量可扩展的特点,能够在不同环境下高效地收集电磁能量。
A scalable wideband metasurface energy harvester for electromagnetic energy harvesting in X-band and Ku-band was designed.The metasurface energy harvester consists of periodic unit cells,rectifier and load.The interconnection between microstrip lines in the unit cell forms an energy transfer channel for incident energy transmission and aggregation,which enhances the ability of the metasurface energy harvester to capture energy.In addition,the design of coplanar integration between the metasurface array and the rectifier reduces the power loss and simplifies the structure.Simulation results show that the metasurface energy harvester has good absorption in the frequency band from 6.5 GHz to 19 GHz and has a half-power bandwidth of 98%at a resonant frequency of 12.75 GHz.A 10×9 metasurface finite array was fabricated and tested.The results show that the maximum RF-to-DC conversion efficiency of the metasurface energy harvester can reach 56.2%with the input power of 16 dBm.The designed metasurface energy harvester has wide band absorption and scalable number of arrays,thus enabling efficient collection of electromagnetic energy in different environments.
作者
尉易庆
张斌珍
段俊萍
Wei Yiqing;Zhang Binzhen;Duan Junping(State Key Laboratory of Dynamic Measurement Technology,Micro Nano Technology Research Center,North University of China,Taiyuan 030051,China)
出处
《微纳电子技术》
CAS
北大核心
2023年第4期558-565,共8页
Micronanoelectronic Technology
基金
国家自然科学基金(5217555)
山西省重点研发项目(国际合作)(201803D421043)
山西省基础研究计划资助项目(20210302123074)
山西省高等学校中青年拔尖创新人才。
