Semi-analytical method for evaluating shielding effectiveness of an enclosure with an aperture

Proceedings of Tomsk State University of Control Systems and Radioelectronics Pub Date : 1900-01-01 DOI:10.21293/1818-0442-2021-24-1-16-23

A. A. Ivanov, Radioelectronics, M. Komnatnov

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引用次数: 1

Abstract

The paper presents a semi-analytical method for calculating the shielding effectiveness (SE) of an enclosure with an aperture filled with a dielectric or magnetic material. The method is based on a combination of quasi-static analysis of coplanar strip lines (CPS) and an analytical model of an enclosure equivalent circuit. A simulation of a CPS is reduced to solving a simple electrostatic problem and can be performed by any available numerical method. The SE calculation can be performed using any of the existing models of an enclosure equivalent circuit. In the range up to 1 GHz, a validation of the proposed method was carried out using a standardized enclosure 300×120×300 mm3 as an example. To show the capabilities of the method, the paper presents the results of SE for enclosures with a PVC ventilation grill and a glass in the aperture. Using this method in conjunction with a previously published analytical model, the SE calculations for the enclosure with a conducting plate were also performed. The results show that the proposed method has an acceptable accuracy, and the average value of the absolute error does not exceed 6.4 dB

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评定带孔外壳屏蔽效能的半解析法

本文提出了一种半解析法，用于计算电介质或磁性材料填充孔径的外壳的屏蔽效能。该方法结合了共面带状线的准静态分析和外壳等效电路的解析模型。CPS的模拟被简化为解决一个简单的静电问题，并且可以用任何可用的数值方法来执行。SE计算可以使用任何现有的外壳等效电路模型来执行。在高达1 GHz的范围内，以标准化外壳300×120×300 mm3为例对所提出的方法进行了验证。为了展示该方法的能力，本文给出了带有PVC通风格栅和孔径中有玻璃的外壳的SE结果。利用该方法与先前发表的分析模型相结合，还对带有导电板的外壳进行了SE计算。结果表明，该方法具有可接受的精度，绝对误差的平均值不超过6.4 dB

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Proceedings of Tomsk State University of Control Systems and Radioelectronics

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