Title:
WAVE ABSORBER
Document Type and Number:
WIPO Patent Application WO/2006/027978
Kind Code:
A1
Abstract:
A wave absorber is provided with a structure wherein a full plane conductor layer (11) composed of a conductor, a first dielectric layer (a PC board (12) and a BT board (13)) composed of a single layer or multilayer dielectric, and a pattern layer (14) having a plurality of patterns composed of a conductor are successively laminated. Each pattern in the pattern layer (14) is different from the adjacent other patterns, at least in size or shape. Therefore, the waver absorber performs enough reflection attenuation to prevent communication troubles due to electromagnetic wave reflection and the like, is thin and light in weight, and has wide band attenuation characteristics.
Inventors:
MASUDA YOSHIYUKI (JP)
OTANI NOBORU (JP)
NAKANO HISAMATSU (JP)
OTANI NOBORU (JP)
NAKANO HISAMATSU (JP)
Application Number:
PCT/JP2005/015865
Publication Date:
March 16, 2006
Filing Date:
August 31, 2005
Export Citation:
Assignee:
MITSUBISHI GAS CHEMICAL CO (JP)
MASUDA YOSHIYUKI (JP)
OTANI NOBORU (JP)
NAKANO HISAMATSU (JP)
MASUDA YOSHIYUKI (JP)
OTANI NOBORU (JP)
NAKANO HISAMATSU (JP)
International Classes:
H05K9/00; H01Q17/00; H01Q21/06
Domestic Patent References:
WO1994024724A1 | 1994-10-27 |
Foreign References:
JPH06140787A | 1994-05-20 | |||
JPH11330775A | 1999-11-30 | |||
JP2001339192A | 2001-12-07 | |||
JP2002368479A | 2002-12-20 | |||
JP2004063719A | 2004-02-26 | |||
JPH11163585A | 1999-06-18 | |||
JP2000068677A | 2000-03-03 | |||
JP2001308584A | 2001-11-02 | |||
JPH1051180A | 1998-02-20 | |||
JPH05335832A | 1993-12-17 | |||
JP3209453B2 | 2001-09-17 | |||
JP2001352191A | 2001-12-21 | |||
US5576710A | 1996-11-19 | |||
US5214432A | 1993-05-25 | |||
GB2336472A | 1999-10-20 | |||
US6207003B1 | 2001-03-27 | |||
EP1720396A1 | 2006-11-08 | |||
JP2003243876A | 2003-08-29 | |||
JPH0685532A | 1994-03-25 |
Other References:
See also references of EP 1796450A4
Attorney, Agent or Firm:
Shiga, Masatake (Yaesu Chuo-ku, Tokyo 53, JP)
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