具备多模式可切换功能的超材料结构  

Metamaterial Structure Featuring Multi-Mode Switchable Functionality

作　　者：王哲飞 黄佳俊 吴杰 杜骅 吴慧芳 葛俊祥[1] 万发雨[1] 傅佳辉[3] 曾庆生 Tayeb A.Denidni Wang Zhefei;Huang Jiajun;Wu Jie;Du Hua;Wu Huifang;Ge Junxiang;Wan Fayu;Fu Jiahui;Zeng Qingsheng;Tayeb ADenidni(School of Electronics&Information Engineering,Nanjing University of Information Science&Technology,Nanjing 210044,Jiangsu,China;School of Applied Science and Technology,Hainan University,Danzhou 571737,Hainan,China;School of Electronics and Information Engineering,Harbin Institute of Technology,Harbin 150001,Heilongjiang,China;College of Astronautics,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,Jiangsu,China;Institut National de la Recherche Scientifique,Universitédu Quebec,Montreal H5A1K6,Canada)

机构地区：[1]南京信息工程大学电子与信息工程学院,江苏南京210044 [2]海南大学应用科技学院,海南儋州571737 [3]哈尔滨工业大学电子与信息工程学院,黑龙江哈尔滨150001 [4]南京航空航天大学航天学院,江苏南京210016 [5]加拿大国立科学研究院,加拿大蒙特利尔H5A1K6

出　　处：《光学学报》2023年第23期201-208,共8页Acta Optica Sinica

基　　金：中国博士后科学基金(2023M732027);江苏省高等学校基础科学(自然科学)研究面上项目(23KJB510011);江苏省高层次创新创业人才引进计划(JSSCB20210476);南京信息工程大学人才启动经费(2021r080)。

摘　　要：提出了一种新型的多功能超材料滤波器/屏蔽器,其具有双频段极化独立控制、多模式可切换等特点。与传统器件不同的是,所提出的设计能够独立控制横电(TE)或横磁(TM)极化波在不同频段的透射和反射,并且通过设置不同的二极管偏置电压,可以实现4种不同的工作模式。该结构基于等效电路模型,采用多层滤波结构设计,通过在顶层和底层加载PIN二极管实现TE和TM极化波在低频段和高频段的独立控制。在传输模式下,TE和TM波分别在3.6 GHz和4.6 GHz附近得以传输;在屏蔽模式下,该结构可以有效地阻挡入射极化波。每种模式都有非常稳定的工作状态,不会受到其他工作模式的影响。此外,该设计在0°~45°入射范围内具有良好的角度稳定性。这种多模式超材料结构可以应用于天线罩等领域,天线传输信号时能满足对特定极化信号的需求,待机时可以屏蔽信号以减少干扰。Objective Known as frequency-selective surfaces(FSSs),artificial electromagnetic metamaterials are periodic structures that selectively transmit or reflect electromagnetic waves.However,traditional passive FSSs with fixed electromagnetic filtering characteristics have limitations in complex modern environments.To this end,active frequency-selective surfaces(AFSSs)with switchable,reconfigurable,and tunable functionalities have caught attention for their flexible electromagnetic wave control capabilities.Although many researchers have devoted considerable efforts to developing AFSS structures with various advantageous features,limited attention has been paid to independent control of different polarizations.To satisfy the demand for polarization independent control in various applications,we propose a novel AFSS structure with four operating modes.The design allows independent modulation of transmission and reflection for TE or TM polarized wave at different frequency bands,providing dual-polarization transmission,TE or TM single-polarization transmission,and full-polarization shielding functionalities.Furthermore,the AFSS structure demonstrates excellent angular stability,ensuring almost consistent performance within an incidence range of 0°-45°for all operating modes.This characteristic is vital for practical applications that require stable functionality under varying incident angles.Finally,the presented polarization independent multi-mode AFSS structure exhibits promising potential in spatial filtering and radome applications that require specific polarization control.Methods We propose a novel multi-mode switchable AFSS structure with polarization independent control capability and excellent angular stability.The design involves a multi-layer filtering structure that enables the desired polarization independent control functionality.Specifically,we carefully design orthogonal top and bottom FSS structures to independently control TE and TM polarizations.Meanwhile,by integrating PIN diodes between adjacent u

关 键 词：材料 超材料 多模式可切换超材料 极化可独立调控结构 天线罩 

分 类 号：O441.4[理学—电磁学]