文章基本信息

标题：Modeling of Tunneling Effects in Epsilon-Near-Zero Waveguide
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作者：N. Vojnović ; M. Mitrović ; B. Jokanović 等
期刊名称：Microwave Review
印刷版ISSN：1450-5835
出版年度：2012
卷号：18
期号：2
出版社：Society for Microwave Technique, Technologies and Systems, Serbia and Montenegro IEEE MTT-S Chapter
摘要：In this paper we present a simple method for efficient modeling of the tunneling effect in a non-homogeneous epsilon-near-zero (ENZ) waveguide, using an equivalent circuit approach. ENZ waveguide consists of rectangular waveguides filled with two-layered dielectric, E-step, and a narrow channel. It was shown that the E-step in a non-homogenous structure can be modeled rather simply using a shunt capacitor whose capacitance is determined analytically using the same expression which applies to homogeneous rectangular waveguide. In that case the error in determining the first resonance is less than 1%, while in the case of the second resonance the error is less than 2.5%, if the non-homogeneity is not very large, i.e. if the ratio between the relative permittivities of the dielectrics in the input waveguides and the channel is less than two
关键词：ENZ waveguide; E-step discontinuity; Tunneling ;effect; Equivalent circuit