Practical finite difference time domain (FDTD) shielding analysis of thin coatings and shield bonding methods

1999 IEEE International Symposium on Electromagnetic Compatability. Symposium Record (Cat. No.99CH36261) Pub Date : 1999-08-02 DOI:10.1109/ISEMC.1999.810157

J. G. Kraemer

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Abstract

Thin coatings such as indium tin oxide (ITO) or gold splatter on glass are often used on electronic display enclosures for shielding to allow compliance with radiated emissions standards while allowing optical transmission. The thin coatings are often bonded to the display enclosure to allow realization of the maximum shielding. The bonding is often accomplished by the use of a conductive gasket that mates with a busbar on one or more edges of the thin coating. Shielding effectiveness of the coating and gasket configuration is very difficult to predict using traditional shielding effectiveness equations. This paper shows how 3-dimensional (3D) finite difference time domain (FDTD) simulation and analysis are used to examine trends in shielding effectiveness with respect to gasket characteristics, thin coating characteristics (thickness and conductivity), and bonding methods. Practical simulation and model setup methods are presented. Results are provided for common configurations.

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实用的薄涂层时域有限差分(FDTD)屏蔽分析及屏蔽键合方法

薄涂层，如氧化铟锡(ITO)或玻璃上的金飞溅，通常用于电子显示外壳的屏蔽，以使其符合辐射发射标准，同时允许光传输。薄涂层通常粘接在显示外壳上，以实现最大的屏蔽。粘接通常通过在薄涂层的一个或多个边缘上使用与母线配套的导电垫圈来完成。传统的屏蔽效能方程很难预测涂层和衬垫结构的屏蔽效能。本文展示了如何使用三维(3D)时域有限差分(FDTD)模拟和分析来检查有关垫片特性，薄涂层特性(厚度和电导率)和粘合方法的屏蔽有效性趋势。给出了实用的仿真和模型建立方法。提供了常见配置的结果。

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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来源期刊

1999 IEEE International Symposium on Electromagnetic Compatability. Symposium Record (Cat. No.99CH36261)

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