印制电路板电磁兼容性有限元分析

T. Bitoiu, L. Stanciu
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引用次数: 2

摘要

由于计算机建模在过去30年中取得了许多重大进展,现在有可能以完全数值的方式处理许多EMC问题。电磁干扰问题可以用偏微分方程(PDE)来表示,用有限元法(FEM)、时域有限差分法(FDTD)等离散化技术进行数值求解,也可以用积分方程(IE)来表示,用矩量法(MOM)进行数值求解。本文介绍了利用有限元法分析和计算印制电路板(PCB)的信号和电源走线所产生的干扰场的可能性。
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Electromagnetic compatibility analysis of the printed circuits boards using finite element method
Due to many significant advances in computer modeling occurred in the past 30 years, there is now possible to approach many EMC problems in a completely numerical way. EMC problems can be formulated in terms of Partial Differential Equations (PDE) to be solved numerically by means of some discretization techniques such as the Finite Element Method (FEM), the Finite Difference Time Domain Method (FDTD) or they can be formulated in terms of Integral Equations (IE) to be solved numerically by application of the Method of Moments (MOM). In this paper some aspects regarding the possibility to use the FEM to analysis and compute the disturbance field produced by signal and supply traces of a printed circuit board (PCB) are presented.
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