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Title:
ELECTROMAGNETIC WAVE ABSORBER
Document Type and Number:
Japanese Patent JP2007012775
Kind Code:
A
Abstract:

To provide an electromagnetic wave absorber where a material which contains aggregate using slag in which steel manufacturing dust is redissolved as a raw material is used, and an S21 parameter value becomes -4 to -20 dB at a frequency band of 5 to 8 GHz.

The electromagnetic wave absorber is composed of the mixture of the material containing the aggregate using the slag obtained by redissolving the steel manufacturing dust as a raw material and a binder, and shows reflection absorption characteristics where the S21 parameter value (unit: dB) when TE waves are allowed to enter obliquely at an angle of 30° for measurement in units of 50±30 mm in thickness backed with a metal plate exists within a range of -4 to -20 dB at the frequency band of 5 to 8 GHz.


Inventors:
SAITO AKIHIKO
MATSUI NOBUYUKI
MASAKI YOSHINORI
Application Number:
JP2005189907A
Publication Date:
January 18, 2007
Filing Date:
June 29, 2005
Export Citation:
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Assignee:
DAIDO STEEL CO LTD
International Classes:
H05K9/00; H01F1/00; H01Q17/00
Attorney, Agent or Firm:
Koji Nagato
Junichi Yamanaka