Articles | Volume 13
https://doi.org/10.5194/ars-13-155-2015
https://doi.org/10.5194/ars-13-155-2015
03 Nov 2015
 | 03 Nov 2015

Analysis of the effect of different absorber materials and loading on the shielding effectiveness of a metallic enclosure

S. Parr, H. Karcoon, S. Dickmann, and R. Rambousky

Abstract. Metallic rooms as part of a complex system, like a ship, are necessarily connected electromagnetically via apertures and cables to the outside. Therefore, their electromagnetic shielding effectiveness (SE) is limited by ventilation openings, cable feed-throughs and door gaps. Thus, electronic equipment inside these rooms is susceptible to outer electromagnetic threats like IEM (Intentional Electromagnetic Interference). Dielectric or magnetic absorber inside such a screened room can be used in order to prevent the SE from collapsing at the resonant frequencies. In this contribution, the effect of different available absorber materials is compared, as well as other properties like weight and workability. Furthermore, parameter variations of the absorber as well as the effect of loading in form of metallic and dielectric structures on the SE are analyzed.

Download
Short summary
Absorbers used for improving the Shielding Effectiveness (SE) are compared in their electromagnetic performance. Therefore the permittivity and permeability are determined with a coaxial line experiment. The effect of loading in the form of metallic and dielectric structures inside a metallic enclosure on the SE is analyzed. It turns out, that the SE can be improved by using absorber. Also, the SE is affected by loading inside the metallic enclosure.