Abstract:

In order to study the shielding mechanism of fabric, and provide theoretical guidance to the development of electromagnetic shielding fabric. The microstructure of fabric has been modeled, and a three-dimensional electromagnetic simulation model of the fabric was established by CST microwave studio. Using finite integration technique we computed the shielding effectiveness in 1～18GHz range, including different conductivity, density and layer count of fabric, and different incidence angle of electromagnetic wave. The result shows that conductivity is the key factors for fabric. Shielding effectiveness as the fabric structure parameters change is nonlinear. The electromagnetic wave incidence angle increase would cause the polarization effect of surface current density on fabric. This study has universal applicability, and provides a theoretical proof in optimizing design for high-performance shielding fabric.

Key words: electromagnetic shielding fabric, microstructure model, shielding effectiveness, electromagnetic simulation