Electromagnetic wave absorption complex, and method of producing the same
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United States of America Patent
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Jul 8, 2008
Grant Date -
Sep 14, 2006
app pub date -
Apr 15, 2004
filing date -
Apr 17, 2003
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An electromagnetic wave absorber is formed by injection-molding a thermoplastic resin blended with approximately 20-60% by volume of soft magnetic material powder, and blended with a molding assistant and a kneading assistant. The electromagnetic wave absorber includes a unit cell having a bore extending from a top face to a bottom face. A portion of the bore located more adjacently to the bottom face than to the top face has a smaller cross-sectional area than the bore at the top face, and a height of the unit cell from the bottom face to the top face is approximately at least 1.2 times and approximately at most 10 times as large as the maximum width of the bore at the top face of the unit cell.
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