Technique for Evaluating the Contribution of Protective Means to Shielding Effectiveness of Heterogeneous Wall

The model of shielding of electric, magnetic, and electromagnetic fields by a heterogeneous wall is improved, and a technique for applying this model to the description of technical solutions used to improve the shielding effectiveness of buildings, bodies of vehicles and ships, cases of electronic equipment, etc. is developed. An experimental validation of the developed technique is carried out for the case of shielding a magnetic field by metal wire meshes in the frequency range from 100 kHz to 100 MHz and for the case of shielding an electromagnetic field by a wire mesh, metal foil tapes, wire mesh gasket, cloth pad gasket, and finger spring gaskets in the frequency range from 800 MHz to 18 GHz.