Comparison of Shielding Effectiveness of Jerusalem Cross and Wire Screen Metamaterials for Vehicular Electromagnetic Compatibility

Abstract

Regulations on vehicular electromagnetic compatibility such as CISPR 25 and ISO 11451–2 establish limits for the electromagnetic emissions of electrical systems in a vehicle and sets limits for electromagnetic emissions from components to prevent disturbance in vehicles. The physical dimensions of the FSS represent important design parameters, as they exert a great influence on its transmission and reflection characteristics, as well as the types of dielectric materials used. Two frequency selective surfaces (FSS) were analyzed for the purpose of shielding effectiveness and adaptation to the standards applied to electric vehicles with the purpose of decrease electromagnetic interference. This article compares shielding effectiveness between two FSS, a Jerusalem Cross and Wire Screen. In this article, approximate and simple formulas were used to calculate shielding effectiveness, reflection, absorption and transmittance values.