Title:
ELECTROMAGNETIC WAVE ABSORBER, BUILDING MATERIAL, ELECTROMAGNETIC WAVE DARKROOM STRUCTURE, TRANSMISSION/RECEPTION DIRECTION CONTROL METHOD, AND ELECTROMAGNETIC WAVE ABSORBING METHOD
Document Type and Number:
Japanese Patent JP2007294921
Kind Code:
A
Abstract:
To provide an electromagnetic wave absorber which improves an electromagnetic wave absorption volume.
The electromagnetic wave absorber is composed of a lamination of a pattern layer 5 and a loss layer. The pattern layer 5 has patterns 12 formed thereon, which are made of a conductive material, such as metal. When the area of the entire part of the pattern layer is 1, the part where the patterns 12 are formed has an area of 0.6 or more. The width of a gap formed between the patterns 12 changes in size consecutively with regard to the direction of an extension of the gap.
COPYRIGHT: (C)2008,JPO&INPIT
Inventors:
GO HARUHIDE
YOSHIDA TAKAHIKO
MATSUSHITA MASATO
SATO SHINICHI
YOSHIHARA RYOTA
KIYOHARA YOSHIHARU
MORITA KAZUHISA
YOSHIDA TAKAHIKO
MATSUSHITA MASATO
SATO SHINICHI
YOSHIHARA RYOTA
KIYOHARA YOSHIHARU
MORITA KAZUHISA
Application Number:
JP2007079921A
Publication Date:
November 08, 2007
Filing Date:
March 26, 2007
Export Citation:
Assignee:
NITTA KK
International Classes:
H05K9/00; B32B7/02; G06K17/00; H01Q17/00
Domestic Patent References:
| JP2005012204A | 2005-01-13 | |||
| JPH10308596A | 1998-11-17 | |||
| JP2002076679A | 2002-03-15 | |||
| JP2000077884A | 2000-03-14 | |||
| JP2006020083A | 2006-01-19 | |||
| JP2000091839A | 2000-03-31 |
Foreign References:
| WO2005084096A1 | 2005-09-09 | |||
| WO2005084096A1 | 2005-09-09 |
Attorney, Agent or Firm:
Keiichiro Saikyo
Takeshi Sugiyama
Takeshi Sugiyama
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