宽带吸波超材料的研究进展

宽带吸波材料在隐身、电磁屏蔽和兼容等领域具有重要应用价值。受制于材料的电磁频散,传统吸波材料的低频吸收性能难以进一步提升。近年来发展的吸波超材料由于具有不同于传统材料的吸波原理而广受关注。简要概述了吸波超材料的性能、结构及特点,重点介绍了吸波超材料的新型吸收机制及宽带吸波超材料的最新研究成果,最后对其今后的发展方向做了展望。

Recent Advances in Broadband Metamaterial Absorbers

Microwave absorbing materials (MAMs)with a broad absorption bandwidth have vital applications in many fields including stealth,electromagnetic shielding and compatibility.Suffering from frequency dispersion of electromagnetic parameters,the traditional MAMs have a very limited room to further improve the absorption per-formance.While recently developed metamaterial absorbers (MMAs)have attracted tremendous attention because of the totally different absorption mechanism,structures and properties from the traditional MAMs.This review firstly gives a brief introduction of the concept and characteristics of MMAs,and then mainly summarizes the recently deve-loped absorption mechanism and research progress of broadband MMAs.Finally,an outlook of the broadband MMAs is also provided.