基于超材料的宽带高吸收率吸波器研究  

Research on broadband and high absorption absorber based on metamaterial

作　　者：于榭彬 宋耀良[1] 范事成 

机构地区：[1]南京理工大学电子工程与光电技术学院,江苏南京210094

出　　处：《电子技术应用》2017年第12期89-91,95,共4页Application of Electronic Technique

基　　金：国家自然科学基金(61571229)

摘　　要：设计了一种加载集总电阻的宽带高吸收率超材料吸波器,并且对其进行仿真和实物测试。仿真结果显示,该超材料吸波器在8.4~13.6 GHz的频率范围内吸收率超过90%,相对吸收带宽为47.3%;在10.3~13.1 GHz频率范围内有超过99.9%的吸收率,相对吸收带宽为23.9%。在工作频段内,该吸波器对于宽入射角的入射波依旧能保持较高的吸收率,最后利用吸波器表面电流和电场分布对吸收机理进行了分析。所设计的宽带高吸收电磁超材料吸波器在X波段雷达、电磁隐身等方面有着巨大的潜在应用。This paper describes the design of a resistor loaded and broadband high absorption metamaterial absorber and takes it into simulation and physical test. The results of simulation show that between 8. 4 to 13. 6 GHz the absorption rate of the absorber is higher than 90 % and the relative bandwidth achieves 47. 3 %, between 10. 3 to 13. 1 GHz the absorption rate of the absorber is higher than 99 % and the relative bandwidth achieves 23. 9 %. In the working frequency band this absorber can still maintain a high absorption rate for incident wave with wide incidence angle. Finally, the absorption mechanism is analyzed by using the sur-face current and electric field distribution of the absorber. The broadband high absorption metamaterial absorber this paper designed has a huge potential application in the X band radar, electromagnetic stealth and so on.

关 键 词：超材料吸波器 宽频带 高吸收率 集总电阻 

分 类 号：TN972.44[电子电信—信号与信息处理]