Electromagnetic shielding behavior of different metallic wire-meshes and thin metal plate

Abstract

The use of electromagnetic shielding materials continues to grow in terms of research and application at various areas. In this paper, shielding effectiveness measurements are conducted to investigate the behavior of three different materials against electromagnetic fields. These materials are copper wire mesh, galvanized wire mesh, and aluminum plate. The purpose of using wire mesh structures is to provide physical ease of use, low price, market accessibility, and lightweight. Metal plates have high shielding effectiveness values. However, they have some disadvantages such as the difficulty of construction and the high price restrict the use of this product. The materials used in this study can be utilized to reduce the radiated emission of devices in a building that processes classified information in terms of TEMPEST. These three materials can be applied to the surface of the building for preventing the spread of information leakages and protecting human exposure from electromagnetic fields in houses. They also help to protect critical devices inside the building, especially the server rooms, from undesired signals (EMC threats). The results presented in this paper will show the most effective shielding properties by comparing these three materials.