Modeling the Electromagnetic Field Distribution in a Shielded Enclosure Lined with Radio-Frequency Absorbers

This paper presents some aspects regarding the electromagnetic field distribution modeling within a shielded enclosure lined with radio-frequency absorbing materials. In order to model the distribution of the electromagnetic field inside the chamber, the CST Studio Suite ® simulation software was used. A shielded enclosure model with 1 m side cubic geometry was built. It was desired to study its behavior at different frequencies in order to determine the shielding performance. Both the distribution of the field density on the surface of the enclosure’s walls, and the field scattering at the interior and at the exterior of the enclosure were of interest. The chamber modeling was performed using radio-frequency absorbers in the frequency range 0 GHz – 10 GHz and the results are presented and discussed.