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Frequency selective surface with a flat topped passband

作者姓名：	贾宏燕高劲松冯晓国孟庆文

作者单位：	Changchun Institute of Optics Fine Mechanics and Physics，Chinese Academy of Sciences，Changchun 130033 Graduate School of the Chinese Academy of Sciences，Beijing 100039，Changchun Institute of Optics，Fine Mechanics and Physics，Chinese Academy of Sciences，Changchun 130033，Changchun Institute of Optics，Fine Mechanics and Physics，Chinese Academy of Sciences，Changchun 130033，Institute of Optical Information，Beijing Jiaotong University，Beijing 100044

摘要：	Two frequency selective surface (FSS) configurations with flat topped passband are presented in this paper. One configuration is single layer FSS with,λ/4 thickness dielectric loaded on both sides,and the other is double layers FSS.Based on the modal matching method,the frequency response properties including angle effect and polarization effect of both FSS configurations are analyzed,and the plots of the frequency versus transmission coefficient are obtained for different incident angles and polarizations.It is shown that the structure with the single layer FSS embedded centrally in the ,k/2 thickness dielectric has a wider flat top bandwidth of 6.8 GHz than that of the double layers FSS of 3 GHz.In addition,the fabrication of single layer is relatively easier than the double layers FSS.
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