STRATIFIED ABSORBER OF ELECTROMAGNETIC WAVES Russian patent published in 2004 - IPC

FIELD: radio engineering, formation of coats absorbing electromagnetic waves of SHF range.

SUBSTANCE: active layers of absorber are fabricated in the form of diffraction gratings from carbographite fabric. Dielectric permittivity of these layers grows from outer active layer to inner and to metal. Radioparent layers show thickness between 0.05 and 0.15 cm. Diffraction gratings can come as forward or backward Fresnel gratings, in the form of Franhofer gratings as well as in the form of combination of various gratings in one structure.

EFFECT: reduced coefficient of wave reflection, thickness of specific weight of absorber.

7 cl, 4 dwg