Wide bandwidth electromagnetic wave absorbing material

Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Including a second component containing structurally defined...

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428329, 428330, 428331, 428332, 428900, B32B 516

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active

057703043

ABSTRACT:
The present invention provides a thin wide bandwidth electromagnetic wave absorbing material capable of absorbing electromagnetic waves in both the semi-microwave band and the semi-millimeter and millimeter wave band. The present electromagnetic wave absorbing material comprises: a first layer composed of a conductive material; a second layer comprising a particle of a metal oxide magnetic material and a matrix of a binder, being applied on the first layer; and a third layer comprising a particle of a metal magnetic material and a matrix of a binder, being applied on the second layer.

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Berthault et al., "Magnetic Properties Of Permalloy Microparticles", Journal of Magnetism and Magnetic Materials, vol. 112, No. 1/3, Jul. 1, 1992 Amsterdam NL, pp. 477-480.

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