Different Numerical Methods for Electromagnetic Field Calculation with Respect to EMC Problems

摘要

This paper dscribes two different numerical methods for the analysis of electriomagnetic field with respect to EMC problems. The methods can analyze electromagnetic fields, ranging form static to high-frequency fields, with thin shielding materials. In the methods, FEM is employed to solve a couple of differential equations which express the relation between the magnetic fields on both surfaces of the shielding material. The magnetic fields in vacuum regionsare modeled by means of BEM. The FEM-BEM coupled equations are sloved to evaluate shielding property.