[1]周永刚,徐金平.减缩时域有限差分法在电磁干扰预测中的应用[J].东南大学学报(自然科学版),2003,33(4):392-395.[doi:10.3969/j.issn.1001-0505.2003.04.004]
 Zhou Yonggang,Xu Jinping.Application of reduced finite difference time domain method to the prediction of electromagnetic interference[J].Journal of Southeast University (Natural Science Edition),2003,33(4):392-395.[doi:10.3969/j.issn.1001-0505.2003.04.004]
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减缩时域有限差分法在电磁干扰预测中的应用()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
33
期数:
2003年第4期
页码:
392-395
栏目:
电磁场与微波技术
出版日期:
2003-07-20

文章信息/Info

Title:
Application of reduced finite difference time domain method to the prediction of electromagnetic interference
作者:
周永刚1 徐金平2
1 南京航空航天大学信息科学与技术学院, 南京 210016; 2 东南大学毫米波国家重点实验室, 南京 210096
Author(s):
Zhou Yonggang1 Xu Jinping2
1 College of Information Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
2 State Key Laboratory of Millimeter Waves, Southeast University, Nanjing 210096, China
关键词:
电磁干扰 时域有限差分 屏蔽外壳 缝隙
Keywords:
electromagnetic interference(EMI) finite difference time domain(FDTD) shielding enclosure slot
分类号:
TN03
DOI:
10.3969/j.issn.1001-0505.2003.04.004
摘要:
对减缩时域有限差分(R-FDTD)法进行了改进,采用传统时域有限差分(FDTD)法计算导体和源网格处的电场,其余网格处的电场采用R-FDTD法计算.细导线附近网格上的磁场也采用传统FDTD法计算,这样可以消除直接利用R-FDTD法计算时长时间迭代后出现的不稳定性.用这种改进的R-FDTD方法分别对一个在导体壁上开有水平和垂直缝隙的矩形屏蔽外壳的电磁干扰进行了预测,得到了屏蔽外壳激励源的输出功率曲线和屏蔽外壳的泄漏功率曲线,所得的计算结果与文献报道的实验数据吻合.
Abstract:
The reduced finite difference time domain(R-FDTD)method is improved. The electric-field components at the perfect electric conductor(PEC)cells and the source cells are calculated with Yee’s FDTD to simplify the computation, and the electric fields of the rest source-free region are modeled with R-FDTD. The magnetic-field components near thin wire are modeled with regular FDTD and the magnetic fields in the other region are computed with R-FDTD. In this way, the numerical instability occurred in the late step of updating magnetic fields near thin wire by original R-FDTD can be efficiently eliminated. Electromagnetic interference from a rectangular shielding enclosure with a horizontal slot and a vertical slot is modeled with the improved R-FDTD, respectively. The curves of delivered power and radiated power through the slots are obtained. The simulated results agree well with the experimental data published in literature.

参考文献/References:

[1] George D K,Franco D F,Gregory J O,et al.A memory-efficient formulation of the finite-difference time-domain method for the solution of Maxwell’s equation [J].IEEE Transactions on Microwave Theory and Techniques, 2001,49(7):1310-1320.
[2] Yee K S.Numerical solution of initial boundary value problems involving Maxwell’s equations in isotropic media [J].IEEE Trans Antennas Propagation,1966,AP-14:302-307.
[3] David M H,James L D,Todd H H,et al.FDTD modeling of common-mode radiation from cables [J]. IEEE Transaction on Electromagnetic Compatibility, 1996,38(3):376-386.
[4] Li M,Ma K P,David M H,et al.Numerical and experimental corroboration of an FDTD thin-slot model for slots near corners of shielding enclosure [J].IEEE Transaction on Electromagnetic Compatibility, 1997,39(3):225-230.
[5] Tsuei Y S,Andreas C C,Prince L.Rigorous electromagnetic modeling of chip-to-package(first-level)interconnections [J]. IEEE Transaction on Components,Hybrids,Manufacturing Technology,1993,16(8):876-882.
[6] Gilbert J,Holland R.Implementation of the thin-slot formalism in finite-difference EMP code THREDII [J]. IEEE Trans Nucl Sci,1981,NS-28:4269-427.

备注/Memo

备注/Memo:
基金项目: 武器装备预研基金资助项目(51447050203JW0601).
作者简介: 周永刚(1972—), 男, 博士生, 讲师; 徐金平(联系人),男,教授,博士生导师, jpxu@seu.edu.cn.
更新日期/Last Update: 2003-07-20