Shielding effectiveness measurement and simulation of small perforated shielding enclosure using FEM

This paper deals with an experimental measurement and a numerical simulation of shielding effectiveness of a perforated shielding enclosure using finite element method (FEM). There are shown possibilities of model definitions, differences between 2D and 3D models are discussed. Important part of simulation is the possibility to verify the model results - the simulation result should be verified in terms of total electric energy of the model on the degrees of freedom and the simulation results could be verified by measurements. A solution of illustrative example of shielding effectiveness FEM simulation is shown and the simulation results are verified by the experimental measurement results.