多功能动态波束调控的太赫兹编码超表面  

Terahertz Coding Metasurface for Multifunctionally Dynamic Beam Manipulation

作　　者：王禄炀 兰峰[1,2] 宋天阳 何贵举[1] 潘一博 张雅鑫 陈智[3] 杨梓强 WANG Luyang;LAN Feng;SONG Tianyang;HE Guiju;PAN Yibo;ZHANG Yaxin;CHEN Zhi;YANG Ziqiang(School of Electronic Science and Engineering,University of Electronic Science and Technology of China,Chengdu 611731,China;Yangtze Delta Region Institute(Huzhou),University of Electronic Science and Technology of China,Huzhou 313001,China;National Key Laboratory of Science and Technology on Communications,University of Electronic Science and Technology of China,Chengdu 611731,China)

机构地区：[1]电子科技大学电子科学与工程学院,四川成都611731 [2]电子科技大学长三角研究院(湖州),浙江湖州313001 [3]电子科技大学通信抗干扰技术国家级重点实验室,四川成都611731

出　　处：《无线电通信技术》2022年第2期247-252,共6页Radio Communications Technology

基　　金：国家自然科学基金(U20A20212,61871419,61901093,61921002,61931006,61771327);国家重点研发计划(2021YFA1401004,2018YFB1801503);四川省科技计划项目(2020JDRC0028);中国博士后科学基金资助项目(2017M623000)。

摘　　要：太赫兹编码超表面对于在复杂信道环境中实现大容量高速通信具有巨大潜力,对发展6G无线通信技术具有重要研究价值。针对目前太赫兹频段的动态超表面调控器件普遍存在的问题,基于高电子迁移率晶体管(High Electron Mobility Transistor,HEMT)电控调节编码单元与太赫兹波互作用引起的非对称谐振,在低开关比下实现了一种太赫兹1 bit编码相移单元。进一步在编码超表面阵列上,利用分数化编码、卷积编码、分块编码和GRS(Golay-Rudin-Shapiro)编码分别实现了包括连续性波束扫描、多波束调控、RCS缩减在内的多功能波束调控。通过数值计算和电磁仿真验证了所设计的太赫兹编码超表面,为发展下一代高速无线通信技术奠定了基础。Terahertz coding metasurface has great potential for achieving large⁃capacity and high⁃speed communication in complex environments of information channels,and has significant research value for the development of 6G wireless communication.Aiming at the common issues of dynamic regulation of metasurfaces in the terahertz band,a terahertz 1 bit coding phase⁃shift unit is realized with a low switching ratio,based on the high electron mobility transistor(HEMT)to adjust the asymmetric resonance caused by the interaction of coding unit and the terahertz wave.Further,coding metasurface achieves multifunctional beam manipulation including continuous beam scanning,multi⁃beam regulation,and RCS reduction is realized by using fractional,convolutional,divisional,and GRS(Golay⁃Ru⁃din⁃Shapiro)coding strategies,respectively.The designed terahertz coding metasurface is verified through numerical calculations and electromagnetic simulations,laying the foundation for the development of the next⁃generation high⁃speed wireless communication.

关 键 词：太赫兹 编码超表面 动态波束重构 高电子迁移率晶体管 

分 类 号：TP929.5[自动化与计算机技术]