Radar-absorbing material having honeycomb sandwich structure and stealth structure using same
AssigneeIndustry-Academic Cooperation Foundation Gyeongsang National University
InventorsYoung Woo Nam, Byeong Su Kwak, Jin Ho Choi, Jin Hwe Kweon
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Abstract
Various embodiments relate to an electromagnetic wave absorber having a honeycomb sandwich structure, which is capable of absorbing broadband electromagnetic waves using electromagnetic properties of a metal-coated dielectric fiber, may comprise: at least two honeycomb core layers in each of which hexagonal units formed of a material comprising the metal-coated dielectric fiber are continuously arranged; and skin layers which are disposed on top surfaces and bottom surfaces of the at least two honeycomb core layers and each include a bottom layer, a top layer, and an intermediate layer. Various other embodiments are possible.
Claims6
An electromagnetic wave absorber having a honeycomb sandwich structure, which is capable of absorbing broadband electromagnetic waves using electromagnetic properties of a metal-coated glass fiber, the electromagnetic wave absorber comprising:
- at least two honeycomb core layers in each of which hexagonal units formed of a material comprising the metal-coated glass fiber are continuously arranged;
- and
- skin layers which are disposed on top surfaces and bottom surfaces of the at least two honeycomb core layers, the skin layers including a bottom layer, a top layer, and an intermediate layer;
- wherein the honeycomb core layers are formed of a first electromagnetic wave absorbing layer formed by impregnating a nickel-coated second glass fiber having a complex permittivity of 11.23−j21.86 at 10 GHz with an epoxy resin,
- wherein the bottom layer and top layer contain at least one sheet layer formed by impregnating a glass fiber with the epoxy resin, and the intermediate layer contains a sheet layer formed by impregnating the glass fiber with the epoxy resin and a plurality of second electromagnetic wave absorbing layers formed by impregnating a nickel-coated first glass fiber having a complex permittivity of 8.06−j12.68 at 10 GHz with the epoxy resin.
Dependencies are inferred from the claim text.