屏蔽效果-何时停止阻挡并开始吸收

2019 IEEE International Symposium on Electromagnetic Compatibility, Signal & Power Integrity (EMC+SIPI) Pub Date : 2019-07-01 DOI:10.1109/ISEMC.2019.8825276

P. Bremner, G. Vazquez, D. Trout, P. Edwards

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引用次数: 1

摘要

电气小型外壳屏蔽效能的定义和测量在IEEE标准299.1中提出了一些特殊的挑战。对小型外壳的测试通常会达到用垫圈和密封胶带阻挡渗透可能无法提高屏蔽效果的程度。本文使用功率平衡模型和简单的外壳Q测量来解释这种明显的限制。然后使用相同的模型来设计和定量评估内部吸收剂溶液，这些溶液可以克服表观限制以达到所需的屏蔽效果。

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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Shielding Effectiveness – When to Stop Blocking and Start Absorbing

Definition and measurement of shielding effectiveness for electrically small enclosures presents some special challenges addressed in IEEE standard 299.1. Testing of small enclosures commonly gets to a point where blocking of penetration with gaskets and sealing tape might not improve shielding effectiveness. This paper uses a power balance model and simple enclosure Q measurements to explain this apparent limit. The same model is then used to design and quantitatively evaluate internal absorber solutions, which can overcome the apparent limit to achieve desired shielding effectiveness.

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来源期刊

2019 IEEE International Symposium on Electromagnetic Compatibility, Signal & Power Integrity (EMC+SIPI)

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