摘要
为满足宽带电磁隐身需求,提出了一种完全覆盖C~Ka波段、部分覆盖S和U波段的超材料吸波体.吸波体由四层不同方块电阻的方形电阻膜及泡沫介质基板构成,多层电阻膜结构有效地向两侧拓宽了吸收带宽.为了分析吸波体的电磁吸收机理,建立并分析了该吸波体的精确等效电路模型.仿真结果表明,在3.16~51.6 GHz(相对带宽为176.9%)工作频带内,对TE和TM波均能实现88%以上的吸收率,并且对入射角度具有稳定性.制作、加工并测试了超材料吸波体,实测结果与等效电路计算、全波仿真结果均具有较好的一致性,表明该吸波体在电磁隐身领域具有重要的应用价值.
A metamaterial absorber is proposed to meet the needs of wideband electromagnetic stealth,which completely covers C−Ka band and partially covers S-band and U-band.The absorber is composed of four square resistance films with different square resistance and foam medium substrates,and the multi-layer resistance film structure effectively expands the absorption bandwidth to both sides.The accuracy equivalent circuit is derived for better explaining the mechanism of the proposed absorber.The simulated results show that the proposed absorber provides over 88%ultra-wide absorption from 3.16 GHz to 51.6 GHz(relative bandwidth is 176.9%),and is stable to the incidence angle for both TE and TM wave.The metamaterial absorber is fabricated and tested,and the measured results are in good agreement with the equivalent circuit calculation and full-wave simulation results,which indicates that it has important application value in the electromagnetic stealth field.
作者
孔祥林
马洪宇
陈鹏
梁仓
王伟华
韩奎
张生俊
刘晓春
赵雷
沈晓鹏
KONG Xianglin;MA Hongyu;CHEN Peng;LIANG Cang;WANG Weihua;HAN Kui;ZHANG Shengjun;LIU Xiaochun;ZHAO Lei;SHEN Xiaopeng(School of Information and Control Engineering,China University of Mining and Technology,Xuzhou 221116,China;School of Materials Science and Physics,China University of Mining and Technology,Xuzhou 221116,China;Key Laboratory of Experimental Physics and Computational Mathematics,Beijing 100076,China;Key Laboratory of Aeronautical Science and Technology for High Performance Electromagnetic Window,Ji’nan 250023,China)
出处
《电波科学学报》
CSCD
北大核心
2021年第6期947-952,共6页
Chinese Journal of Radio Science
基金
江苏省六大人才高峰(XYDXX-072)
国家自然科学基金(61771226)。
关键词
超材料
超宽带
吸波体
电阻膜
等效电路
metamaterial
ultra-wideband
absorber
resistance films
equivalent circuit
