C波段高滚降准周期环形宽带超材料吸波器设计  

Design of C-Band Sharp Roll-down Quasi-Periodic Annular Wide-Banded Metamaterial Absorber

作　　者：单震华 刘浪 刘洪芳 窦立刚 王海龙 万世成 吕博 陈晚 SHAN Zhenhua;LIU Lang;LIU Hongfang;DOU Ligang;WANG Hailong;WAN Shicheng;LüBo;CHEN Wan(Guizhou Aerospace Tianma Eiectromechanical S&T Co.,Ltd.,Zunyi 563000,China;Department of Information Engineering,Guiyang Institute of Information Science and Technology,Guiyang 550025,China;College of Physics and Optoelectronic Engineering,Harbin Engineering University,Harbin 150001,China;College of Information and Communication Engineering,Harbin Engineering University,Harbin 150001,China)

机构地区：[1]贵州航天天马机电科技有限公司,贵州遵义563000 [2]贵阳信息科技学院信息工程系,贵州贵阳550025 [3]哈尔滨工程大学物理与光电工程学院,黑龙江哈尔滨150001 [4]哈尔滨工程大学信息与通信工程学院,黑龙江哈尔滨150001

出　　处：《电子科技》2024年第12期37-41,86,共6页Electronic Science and Technology

基　　金：国家自然科学基金(62201168)。

摘　　要：数字微波接力通信系统是以微波接力方式进行数字信号远距离传输的多路通信系统,为提高通信中的信噪比并降低误码率,文中设计了一种C波段高滚降宽带超材料吸波器。利用准周期的环形谐振结构设计实现偏振不敏感宽带吸收的效果,在7~8 GHz范围内吸收率均在90%以上,吸收谱线的滚降系数达到0.8以上。所提超材料吸波器在常见结构的基础上添加了介质保护层,在保护超材料吸波器表面环形结构的同时增加了吸波器的阻抗匹配能力。所提设计具有结构简单、厚度薄、材料常见以及高滚降吸收的特性,在探测、隐身、传感和通信等领域具有重要的应用潜力。Digital microwave relay communication system is a multichannel communication system in which digital signals are transmitted by microwave relay.In order to improve the signal-to-noise ratio and reduce the bit error rate in this kind of communication,a C-band sharp roll down broadband metamaterial absorber is designed in study.The quasi-periodic ring resonant structure is used to realize the polarization insensitive broadband absorption effect.The absorption efficiency is more than 90%in the range of 7~8 GHz,and the rolling down coefficient of the absorption line can reach more than 0.8.Based on the common structure,a dielectric layer is added to the proposed metamaterial absorber,which protects the ring structure of the surface of the metamaterial absorber and increases the impedance matching ability of the absorber.The proposed design has the characteristics of simple structure,thin thickness,common material and sharpe roll down absorption,and has important application potential in the fields of detection,stealth,sensing,communication and so on.

关 键 词：超材料 准周期 C波段 高滚降 偏振无关 电磁谐振 谐振峰合并 宽带吸收 

分 类 号：TN92[电子电信—通信与信息系统]