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Title:
RADIO WAVE ABSORBER
Document Type and Number:
Japanese Patent JP2006245166
Kind Code:
A
Abstract:

To provide a radio wave absorber used for shielding or absorbing electromagnetic waves, especially at a frequency band of around 5.8 GHz.

Flat magnetic metal powder of 70-100 pts.wt. is blended with respect to resin binder of 100 pts.wt. The flat magnetic metal powder has coercive force (Hc) of 150-600 A/m, an aspect ratio of 14-30, an average diameter of 30-110 μm, and average thickness 1-2,000 μm. Since fluidity and insulation properties are enhanced, magnetic permeability and molding processability are also enhanced, with less specific weight and lighter weight. The electromagnetic wave absorbing characteristics is superior in the frequency band around 5.8 GHz.


Inventors:
HAYASHI KANEFUSA
HAYASHI MOKICHI
HABU TAKUSHI
Application Number:
JP2005056966A
Publication Date:
September 14, 2006
Filing Date:
March 02, 2005
Export Citation:
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Assignee:
SANKEI GIKEN KK
International Classes:
H05K9/00; H01F1/00; H01Q17/00
Domestic Patent References:
JP2001036280A2001-02-09
JP2003229308A2003-08-15
JPH02954A1990-01-05
Attorney, Agent or Firm:
Masayuki Masabayashi
Kazuko Fujita