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在考虑屏蔽体表面非理想平面情况下,建立了一种静电放电(ESD)等效电磁效应的耦合模型,并推导了其具体的电磁场表达式,最后对不同距离处的ESD辐射电磁场进行了分析.结果表明:在静电放电点与凸起距离不变的情况下,测量点距离凸起很近时,静电放电后在周围各点处产生的辐射电磁场远比偶极子本身放电强的多.随着距离的增大,这部分电磁场的影响会慢慢减小,凸起尺寸的大小在实际情况容许的范围内对空间电磁场的影响作用基本可以忽略不计.
Abstract：Electromagnetic pulse radiation generated by Electrostatic discharge(ESD) would damage,interfere even destroy the normal work of the electronic system.In this paper,a coupled model of electromagnetic effects about ESD electrostatic discharge is established,and the specific expression of electromagnetic fields is derived with considering the non-ideal surface of the shield surface.At last,the electromagnetic radiation of ESD is analyzed on different distance.The results show that in the case of the distance between electrostatic discharge point and bump which is unchanged,the electromagnetic radiation at various points generated by ESD is much stronger than electromagnetic radiation generated by dipole discharge when the measurement points is close to the bump.As the distance increases,the impact of this part electromagnetic fields will be reduced slowly,and the influence of space electromagnetic field by the size of bump in actual situation within the scope permitted can be basically negligible.
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基本信息:
中图分类号:O441.4
引用信息:
[1]何丽娟,高璞,郝建红.一种考虑屏蔽体表面情况的ESD电磁辐射效应模型分析[J].石家庄学院学报,2009,11(06):9-14.
基金信息:
国际科技合作计划项目资助课题(2007DFA71250)
2009-11-20
2009-11-20