Study on shielding layer shielding effectiveness of electromagnetic protection envelope material

摘要

In view of the existing single flexible electromagnetic shielding materials it is difficult to meet the electromagnetic protection envelope material using require, the multilayer composite material shielding structure of electromagnetic shielding envelope was studied. The calculation formula of shielding effectiveness analysis was deduced by electromagnetic wave transmission theory. Considering the conductive fabric material and conductive film material shielding properties, the different composite shielding structures of electromagnetic shielding envelope materials were designed and the shielding effectiveness was analyzed by shielding effectiveness calculation method, and the optimal design scheme was selected.