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Title:
ELECTROMAGNETIC WAVE ABSORBER
Document Type and Number:
Japanese Patent JP2006128312
Kind Code:
A
Abstract:

To provide a thin, large and inexpensive electromagnetic wave absorber that is effective at an arbitrary incident angle.

The electromagnetic wave absorber comprises a reflector layer 10 which is the aggregation of conductive materials, a dielectric layer 20, and a conductor layer 30 such as a metal. Since the dielectric constant of the dielectric layer 20 is made over 3, reflection between a space and a dielectric material allows the reflector layer 10 to insert into the surface, and an electric wave is simultaneously absorbable at the arbitrary incident angle almost without depending upon an incident angle θ according to a term (-sin2θ)1/2 concerning the phase difference between a direct wave and a propagation wave in a dielectric.


Inventors:
HAYASHI IKUHISA
KURATA YUHEI
MATSUKAWA TOMOHIRO
Application Number:
JP2004312832A
Publication Date:
May 18, 2006
Filing Date:
October 27, 2004
Export Citation:
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Assignee:
TSUCHIYA RUBBER KK
International Classes:
H05K9/00; B32B7/02; H01Q17/00
Attorney, Agent or Firm:
Yasuo Hirai