光学精密工程2024，Vol.32Issue(7)：987-997,11.DOI:10.37188/OPE.20243207.0987
基于液态金属的跨波段超宽带极化转换超表面
Liquid metal based metasurface for cross-band and ultra-wideband polarization conversion
摘要
Abstract
In wireless communication,controlling electromagnetic wave propagation and polarization direc-tion is crucial for signal detection and reception.This study introduces a liquid metal-based electromagnetic metasurface for polarization conversion in the X(8-12 GHz)and Ku(12-18 GHz)bands.It offers benefits like ultra-wideband performance,high polarization conversion ratio,compactness,durability against me-chanical fatigue,flexibility,and affordability.The metasurface consists of a periodic arrangement with a top step-shaped liquid metal structure,a middle dielectric layer,and a bottom copper foil,capable of ultra-wideband cross-polarization conversion or wideband circular polarization conversion from 7.595 GHz to 17.712 GHz.With a 1.6 mm wide step-shaped liquid metal structure,it achieves over 90%polarization conversion ratio across 7.595-17.712 GHz with a 79.9%relative bandwidth,enabling co-polarization to cross-polarization conversion.At a 0.3mm structure width,it converts linear to circular polarization be-tween 10.864-12.288 GHz with a 12.30%relative bandwidth.Additionally,in the 7.328-7.592 GHz band with a 3.54%relative bandwidth,it maintains over 90%polarization conversion ratio,facilitating co-to cross-polarization conversion.Experimental sample tests reveal a 4.20%relative error between experimen-tal and simulated results,indicating strong theoretical and experimental correlation,thus confirming the metasurface's versatility and effectiveness.关键词
超表面/液态金属/极化转换/超宽带Key words
metasurface/liquid metal/polarization conversion/ultra-wideband引用本文复制引用
邵亚楠,李博文,高世博,邓永波..基于液态金属的跨波段超宽带极化转换超表面[J].光学精密工程,2024,32(7):987-997,11.基金项目
中国科学院稳定支持基础研究领域青年团队项目(No.YSBR-066) （No.YSBR-066）
国家自然科学基金资助项目(No.51875545) （No.51875545）
长春光机所所创新面上项目 （）
吉林省科技发展计划资助项目(No.2023008783) （No.2023008783）
