基于有源超材料的可调超薄雷达吸波体研究  

Investigation on tunable ultra-thin radar absorber based on active metamaterial

作　　者：黄金国 郭宇[3] 赵治亚 李雪 邢明军 谢镇坤 HUANG Jin-guo;GUO Yu;ZHAO Zhi-ya;LI Xue;XING Ming-jun;XIE Zhen-kun(Shenzhen Kuang-Chi Institute of Advanced Technology,Shenzhen 518000,Guangdong,China;Shenzhen Kuang-Chi Cutting-edge Technology Co. ,Ltd. ,Shenzhen 518000,Guangdong,China;AVIC Shenyang Aircraft Design Institute,Shenyang 110035,China;State KeyLaboratory of Metamaterial Electromagnetic Modulation Technology,Shenzhen 518000,Guangdong,China)

机构地区：[1]深圳光启高等理工研究院,广东深圳518000 [2]深圳光启尖端技术有限责任公司,广东深圳518000 [3]中航工业沈阳飞机设计研究所,沈阳110035 [4]超材料电磁调制技术国家重点实验室,广东深圳518000

出　　处：《材料工程》2019年第6期77-81,共5页Journal of Materials Engineering

基　　金：深圳市科技计划资助项目(JSGG20160510111940869,JSGG20150917174734195)

摘　　要：在超材料结构中引入电阻和有源变容二极管,通过合理设计微结构型式以及微结构之间的连线方式,实现吸波频带的动态可调,研究电阻、电容和入射波极化方向对吸波特性的影响。结果表明:通过改变外加电压调整超材料的吸收频段,在3.7倍频带范围内实现吸波频段的主动自调节;吸波体的总厚度仅为波长的1/181,相比于传统吸波材料,在同等吸波性能条件下,表现出了优异的超薄特性;TE和TM极化电磁波表现出相同的吸波效果,即吸波特性对入射波的极化方向不敏感。A sort of state-of-the-art metamaterial was introduced to serve as an active ultra-thin RAM. The metamaterial consisted of resistors, varactor diodes and micro-structure array. The effect of resistor, capacitor and electromagnetic polarization on the absorbing properties was investigated in detail. The results indicate that its absorption band can be regulated in 3.7 times frequency-band by actively changing the external voltage. The total thickness of the metamaterial RAM is only 1/181 of the wavelength. Compared with the traditional absorbing materials, the metamaterial RAM shows excellent ultra thin feature under the same wave absorbing performance. In addition, for TE and TM polarized electromagnetic wave, the metamaterial RAM exhibits the same wave absorbing property, i.e., its absorbing property is insensitive to the polarization direction of incident wave.

关 键 词：吸波材料 超材料 超薄 可调 

分 类 号：TN973.32[电子电信—信号与信息处理]