用FDTD法分析开孔金属板的屏蔽效能

被引:6
作者
吕飞燕
沙斐
机构
[1] 北方交通大学电子信息工程学院
[2] 北方交通大学电子信息工程学院 北京
[3] 北京
关键词
开孔; 金属板; 屏蔽效能; 时域有限差分法;
D O I
暂无
中图分类号
O441 [电磁学];
学科分类号
0809 ;
摘要
电子电气设备上的通风孔通常会成为机箱内部电磁能量耦合到外部去的通道,这些耦合出去的能量会成为电磁干扰,所以需要研究开孔金属板的屏蔽效能(SE).本文采用的是数值建模和实验结果进行比较的方法,时域有限差分法(FDTD)是一种优良的数值电磁场计算方法.本文应用它作为核心算法,对系列实验建立了仿真模型.仿真模型的运算结果和实验数据进行了比较,两者吻合得很好,证明了本文建模的成功.对比较结果的分析,进一步揭示了金属板上开孔的大小、形状、数目以及金属板厚度等各因素对屏蔽效能的影响,一些经验性的推论可供实际设计参考.
引用
收藏
页码:87 / 90
页数:4
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