太赫兹科学与电子信息学报2026，Vol.24Issue(4)：427-433,464,8.DOI:10.11805/TKYDA2025222
一种用于无线能量传输/能量收集的宽带整流超表面
A broadband Rectifying Metasurface for wireless power transfer and ambient energy harvesting
摘要
Abstract
A novel single-layer dual-polarized broadband compact Rectifying Metasurface(RMS)is proposed for microwave wireless power transmission or ambient energy harvesting.The design consists of a 5×5 unit cell array,where each unit cell adopts a multi-resonant structure directly connected to rectifying diodes without requiring a matching network,thereby achieving broadband and highly efficient energy collection and rectification.Simulation results demonstrate that the Metasurface(MS)can achieve an energy harvesting efficiency exceeding 80%over the frequency band of 2.82～4.37 GHz,with angular stability greater than 45°.When the input power is controlled at 0 dBm,the proposed RMS achieves a maximum total Radio Frequency-to-Direct Current(RF-to-DC)conversion efficiency of up to 53%within this frequency band.Experimental measurements validate that the fabricated RMS maintains a total RF-DC efficiency greater than 34%across the 2.75～4.0 GHz band,with a peak efficiency of 45%at a power density of 0.78 mW/cm2,confirming the effectiveness of the proposed design methodology.关键词
能量收集/超表面/整流/微波无线能量传输Key words
energy harvesting/Metasurface(MS)/rectification/microwave wireless power transfer分类
信息技术与安全科学引用本文复制引用
李方位,宋开,刘长军,赵翔,闫丽萍..一种用于无线能量传输/能量收集的宽带整流超表面[J].太赫兹科学与电子信息学报,2026,24(4):427-433,464,8.基金项目
国家自然科学基金资助项目(U22A2015) （U22A2015）
四川省科技计划资助项目(2024YFHZ0282) （2024YFHZ0282）
