太赫兹科学与电子信息学报2026，Vol.24Issue(4)：441-448,8.DOI:10.11805/TKYDA2025178
基于极化分集的紧凑型整流超表面天线
Compact rectifying metasurface antenna based on polarization diversity
摘要
Abstract
To address the challenges of frequent power maintenance and data transmission for sensor nodes,this paper proposes a polarization-diverse rectifying metasurface antenna.The metasurface employs vertically polarized direction integrated with rectifying diodes to harvest microwave wireless energy and convert RF into DC at 3.6 GHz.Simultaneously,it utilizes horizontal polarization at 2.45 GHz for sensor data transmission.Compared with conventional rectenna designs,this metasurface eliminates the impedance matching stubs and features a compact unit size of 20 mm×20 mm×2.29 mm(0.16λ0×0.16λ0×0.02λ0).The metasurface achieves high power transfer efficiencies of 90%at 2.45 GHz and 96.6%at 3.6 GHz,the maximum measured overall efficiency of 41%is achieved at an input power of 3 dBm,demonstrating excellent electromagnetic absorption and radiation performance.The design offers advantages such as miniaturization,high integration,and multifunctionality.Experimental results confirm that the metasurface antenna can simultaneously power sensors and transmit data,offering a novel technical approach for self-powered Internet of Things(IoT)systems in future smart cities.关键词
超表面/传感器/无线能量传输/整流/物联网(IoT)Key words
metasurface/sensors/wireless power transmission/rectifying/Internet of Things(IoT)分类
信息技术与安全科学引用本文复制引用
李奕岑,何沛通,马向进,刘海霞,薛皓,李龙..基于极化分集的紧凑型整流超表面天线[J].太赫兹科学与电子信息学报,2026,24(4):441-448,8.基金项目
国家自然科学基金资助项目(62288101) （62288101）
国家重点研发计划资助项目(2023YFB3811503) （2023YFB3811503）
国家自然科学基金青年科学基金资助项目(62401443) （62401443）
中央高校基本科研业务费专项资金资助(XJSJ25004) （XJSJ25004）
国家资助博士后研究人员计划C档资助项目(GZC20250387) （GZC20250387）
"三秦博创"人才支持资助项目(2025SQBC016) （2025SQBC016）
