ABSTRACT Transmission through a slot in a an infinite metallic shield of finite thickness, inhomogeneously loaded with dielectric material, is modeled using an analytical approximation based on the slot being small compared to a free space wavelength. Resonances of relatively broad bandwidth (Fabry-Perot) as well as of very narrow bandwidth (Fano) are found. We show that by introducing a gap of different dielectric constant within the slot, we can control the separation between the broad bandwidth resonances, and the locations and magnitudes of the very narrow bandwidth resonances. The influence of grooves on both kinds of resonances is considered using the same analytical model. The effect of losses in the dielectric slot is also considered, using data for commercially available dielectrics.

中文翻译：

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非均匀介电负载对通过无限厚金属屏蔽中缝隙传输的影响

摘要 传输通过有限厚度的无限金属屏蔽中的缝隙，不均匀地加载有电介质材料，使用基于缝隙与自由空间波长相比较小的解析近似进行建模。发现了相对宽带宽 (Fabry-Perot) 和非常窄带宽 (Fano) 的共振。我们表明，通过在槽内引入不同介电常数的间隙，我们可以控制宽带宽谐振之间的间隔，以及非常窄带宽谐振的位置和幅度。使用相同的分析模型考虑凹槽对两种共振的影响。使用市售电介质的数据，还考虑了电介质槽中损耗的影响。