PANEL FOR BROADBAND ELECTROMAGNETIC SHIELDING

摘要

A panel for an electromagnetic shield includes a light-weight, porous, electrically-conductive core layer of metallic foam having generally parallel opposed surfaces and a face sheet having rigidity properties superior to the rigidity properties of the core layer laminated to a surface of the core layer. Alternatively, a panel for a broadband electromagnetic shield includes a composite fiber-reinforced core having opposed surfaces and a layered electrically-conductive composite cover disposed on a surface of the core. The cover includes a first stratum of porous metal exhibiting pronounced low-frequency electromagnetic shielding properties and a second stratum of electrically-conductive elements exhibiting pronounced high-frequency electromagnetic shielding properties secured in an overlapping electrically-continuous relationship to the first stratum, the first stratum being a metallic lattice, and the electrically-conductive elements being a non-woven veil of electrically-nonconductive metal-coated fibers.

主权项

1. A panel for a broadband electromagnetic shield, the panel comprising:
(a) a core having first and second surfaces on opposite sides thereof, the distance between the first and second surfaces defining the thickness of the core; and (b) a layered electrically-conductive composite cover on the first surface of the core having a thickness substantially less than the thickness of the core, the cover comprising:
(i) a first stratum of porous metal secured to the core and exhibiting pronounced low-frequency electromagnetic shielding properties; and(ii) a second stratum of electrically-conductive elements secured in an overlapping electrically-continuous relationship to the first stratum, the electrically-conductive elements exhibiting pronounced high-frequency electromagnetic shielding properties.