A metal enclosure whose lid is covered by an array of metal pins is studied in this article. The pins are able to realize a fictitious perfect magnetic conductor surface at the pin end, thus inhibiting cavity resonances in a well-defined frequency band. The article proposes an analytical model for predicting the behavior of the cavity, and thus for estimating the bandgap limits. The method is based on the planar cavity formulation and it embeds analytically the pin to bottom plate capacitance. The obtained cavity response agrees well with the simulated models of various cavity and pins dimensions. Moreover, the method is validated experimentally based on manufactured cavities. An in-depth parametric analysis is carried out for precisely evaluating the limit of validity of the proposed cavity model based approach in the prediction of the bandgap upper and lower limits.

中文翻译：

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PEC–PMC金属外壳和封装的腔体共振行为的有效分析预测

本文研究了一种金属外壳，其盖子被一组金属销覆盖。插针能够在插针末端实现虚拟的理想磁导体表面，从而在明确定义的频带内抑制空腔谐振。本文提出了一种分析模型，用于预测空腔的行为，从而估算带隙极限。该方法基于平面空腔公式，并且分析性地嵌入了引脚到底板的电容。所获得的腔体响应与各种腔体和销尺寸的仿真模型非常吻合。此外，该方法已基于制造的型腔进行了实验验证。