Patent ID: 11888226
Assignee: INDUSTRY-ACADEMIC COOPERATION FOUNDATION GYEONGSANG NATIONAL UNIVERSITY
Field: Surface technology, coating (Chemistry)
Classification: CPC H  B | IPC B  H

Claim 0:
1. 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.