To develop and implement protective screens in the wave zone of the electromagnetic field, first necessary carry out an analytical prediction of their performance, it was found. Coefficients of reflection depend exclusively on the electrical characteristics of the material of the shield and do not depend on the geometry, it has been proved. For exact calculation it is necessary to consider another component of the total shielding coefficient - loss due to multiple reflection of the electromagnetic wave in the thickness of the shield. On the basis of theoretical investigations proposed calculation methods for determining protective properties of these shields.
electromagnetic shield, the induction zone, wave zone, the electromagnetic safety