Radiowave absorbent and manufacturing method thereof
AssigneeSony Corporation
InventorsJunichi Toyoda, Sakan Iwashita, Katsumi Okayama
Life of this patent
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Abstract
A radio wave absorbent capable of absorbing radiowaves in the space saving and efficient manner and capable of coping with up to high frequency bands, as well as a manufacturing method thereof are provided. In a radio wave absorbent in which magnetic particles comprising a soft magnetic metal material are mixed with a matrix of a polymeric material or ceramics, the magnetic particles are formed into elliptic plate particles.
Claims4
A radio wave absorbent in which magnetic particles comprising a soft magnetic metal material are mixed in a matrix of a polymeric material or ceramics, wherein the magnetic particles are of an elliptic plate shape.
A method of manufacturing a radio wave absorbent comprising:
- forming fine spherical particles comprising a soft magnetic metal material;
- colliding the fine spherical particles against an inclined flat surface by a gas jetting pressure to form magnetic particles of an elliptic plate shape;
- and
- mixing the magnetic particles of the elliptic plate shape with a matrix of a polymeric material or ceramics.
Dependencies are inferred from the claim text.