Analysis of Nonlinear Mesh Grid Screens for High-Power Electromagnetic Field Shielding

In this paper, a high-power electromagnetic field shielding of a mesh grid screen with PIN diode array as a nonlinear device is analyzed using three-dimensional numerical simulation. The shielding characteristic of the mesh grid screen without a PIN diode is first examined and it is confirmed that the shielding performance is constant regardless of the strength of the incident field. However, the shielding characteristic of the mesh grid screen with PIN diode depends on the strength of incident electric-field, which represents a nonlinear shielding property.