Shielding effectiveness assessement of a coaxial cable design with a combination of numerical and analytical solutions

This paper introduces a novel approach to assess the shielding effectiveness of coaxial cables design by combining the numerical electromagnetic modeling and an analytical solution. A simplified numerical 3D model is built with the software CST microwaves. The 3D model is limited by the complexity of the braided structure of the coaxial cable's shield. Hence, in this model, the woven structure of the braided shield is simplified by using nonwoven crossed strands. The effect of the weaving is added separately using an analytical solution. A comparison between measurement results extracted from literature, raw results of simulation and simulation results corrected with analytical formula is given. Finally the relevance of the presented method is discussed.