摘要
基于等效介质理论,采用多层薄膜周期结构实现材料的各向异性,并分析了这种多层周期结构在不同薄膜取向情况下的等效电磁参数,研究了该结构的电磁波传输性能,通过理论分析和基于有限元方法的全波电磁仿真后发现,在不考虑损耗的情况下,通过调节电磁波的入射面,垂直入射的TE波可以被该结构转换为TM波,这一结果说明该结构具有良好的极化转换特性,为新型电磁极化调控材料的研究提供了一条新的途径.
Based on the effective medium theory,anisotropic electromagnetic materials have been realized by modeling the multilayered structure of alternating films.The equivalent material constitutive tensor of the proposed structure have been analyzed.Electromagnetic transmission property of the proposed structure with different film orientations has been explored.The theoretical analysis and full-wave EM simulations based on the finite element method show that,in the lossless case,a normal incident TE wave can be converted TM wave by the proposed structure through adjusting the plane of incidence.The result shows that the structure has property of eletromagnetic polarization conversion.This may lead to new ways of exploring novel electromagnetic polarization manipulation materials and structures.
出处
《应用基础与工程科学学报》
EI
CSCD
2011年第2期345-351,共7页
Journal of Basic Science and Engineering
基金
国家自然科学基金(60671002)
关键词
多层薄膜
各向异性材料
极化转换
multilayer films system
anisotropic material
polarization convertion
