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首页> 外文期刊>Microwave and optical technology letters >EFFECTIVE ANALYSIS OF TERMINATED LOSSLESS PLANAR MULTILAYER PERIODIC EBG STRUCTURES USING AN EQUIVALENT TRANSMISSION-LINE MODEL WITH META-SMITH CHARTS
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EFFECTIVE ANALYSIS OF TERMINATED LOSSLESS PLANAR MULTILAYER PERIODIC EBG STRUCTURES USING AN EQUIVALENT TRANSMISSION-LINE MODEL WITH META-SMITH CHARTS

机译：利用带史密斯图的等效传输线模型有效分析端接无平面多层周期EBG结构

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摘要

Lossless planar multilayer periodic electromagnetic bandgap (EBG) structures of dielectric media, illuminated by an oblique electromagnetic plane wave and terminated in a surface impedance with an arbitrary number of multilayers in a unit cell, can be effectively analyzed using an equivalent transmission-line (TL) model based on conjugately characteristic-impedance TLs (CCITLs). In this article, both characteristic impedances with nonnegative characteristic resistances (NNCRs) and negative characteristic resistances (NCRs) associated with CCITLs are considered. It is found that the equivalent CCITL model yields accurate results, and can simplify the analysis of these EBG structures with some physical insight. In addition, Meta-Smith charts (MSCs) can be employed to further simplify the analysis. It is found that MSCs can provide clearer data set than the standard Smith chart with accurate results, and the bilinear transformation can be effectively used to transform dataset between MSCs and the Smith chart.
机译：可以使用等效传输线（TL）有效地分析介电介质的无损平面多层周期性电磁带隙（EBG）结构，该结构由倾斜的电磁平面波照射并终止于单位单元中任意数量的多层的表面阻抗中）基于共轭特征阻抗TL（CCITL）的模型。在本文中，考虑了与CCITL相关的具有非负特性电阻（NNCR）和负特性电阻（NCR）的特性阻抗。发现等效的CCITL模型产生准确的结果，并且可以通过一些物理洞察简化对这些EBG结构的分析。另外，可以使用Meta-Smith图（MSC）进一步简化分析。发现与标准的史密斯圆图相比，MSC可以提供更清晰的数据集，并且结果准确，并且双线性变换可以有效地用于转换MSC和Smith圆图之间的数据集。

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