An Analytical Model for Calculating the Shielding Effectiveness of Dielectric-Embedded Multilayer Metal Meshes

Abstract

The transmission characteristics of the multilayer metal meshes are often studied using numerical methods, which consume a significant amount of computational time and hardware resources. Analytical models can quickly obtain electromagnetic properties, but currently, there are few analytical algorithms for researching dielectric-embedded multilayer metal meshes. In this letter, an analytical model for the wideband shielding effectiveness of infinite dielectric-embedded multilayer metal meshes is presented. By modifying the multiple reflection loss in the multiconductor shielding theory and the total shielding effectiveness after filling multilayer metal meshes with the dielectric, it is possible to analyze the transmission characteristics of both multilayer metal meshes and dielectric-embedded multilayer metal meshes. The results show that the modified model provides good accuracy for the shielding effectiveness of infinite multilayer metal meshes and dielectric-embedded multilayer metal meshes, which is consistent with the results of computer simulation technology (CST) in a wide frequency range. Furthermore, the calculation of the presented analytical model is less than 3000 of the numerical algorithm.