The Calculating and Analysis of Shielding Effectiveness of Metal Meshes in Transient Electromagnetic Interference

摘要

The shielding effectiveness of many sorts of metal meshes in transient electromagnetic interference such as lightning etc. is calculated based on Fourier Transform Algorithm in this paper. The calculating result shows that: the bigger material resistivity is and the thinner mesh radius is, the greater the effect of mesh radius on shielding effectiveness is. When mesh number is fewer, the effect of mesh radius on electrical current becomes greater. So the shielding material with more mesh number is less affected by mesh radius than that with fewer mesh number.