Title:
SHEET BODY, ANTENNA DEVICE, AND ELECTRONIC INFORMATION TRANSMISSION DEVICE
Document Type and Number:
WIPO Patent Application WO/2007/037494
Kind Code:
A1
Abstract:
A sheet body (10) includes a shield layer (13). The shield layer (13) is formed
by a magnetic material. By using it between an antenna element and a conductive
member or in the vicinity of the antenna element, it is possible to effectively
recover the input impedance of the field type antenna and operate the field type
antenna in the vicinity of the conductive member. Furthermore, by setting the
real part μ’ of the complex specific permeability of the shield
layer (13) to a high value and the permeability loss term tan δμ to
a small value, it is possible to suppress the electromagnetic energy loss and
increase the radiation efficiency when operating the field type antenna in the
vicinity of the conductive member.
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Inventors:
YOSHIDA TAKAHIKO (JP)
MATSUSHITA MASATO (JP)
GO HARUHIDE (JP)
KIYOHARA YOSHIHARU (JP)
SATO SHINICHI (JP)
YOSHIHARA RYOTA (JP)
MORITA KAZUHISA (JP)
KOGURE HIROAKI (JP)
MATSUSHITA MASATO (JP)
GO HARUHIDE (JP)
KIYOHARA YOSHIHARU (JP)
SATO SHINICHI (JP)
YOSHIHARA RYOTA (JP)
MORITA KAZUHISA (JP)
KOGURE HIROAKI (JP)
Application Number:
PCT/JP2006/319738
Publication Date:
April 05, 2007
Filing Date:
October 02, 2006
Export Citation:
Assignee:
NITTA CORP (JP)
YOSHIDA TAKAHIKO (JP)
MATSUSHITA MASATO (JP)
GO HARUHIDE (JP)
KIYOHARA YOSHIHARU (JP)
SATO SHINICHI (JP)
YOSHIHARA RYOTA (JP)
MORITA KAZUHISA (JP)
KOGURE HIROAKI (JP)
YOSHIDA TAKAHIKO (JP)
MATSUSHITA MASATO (JP)
GO HARUHIDE (JP)
KIYOHARA YOSHIHARU (JP)
SATO SHINICHI (JP)
YOSHIHARA RYOTA (JP)
MORITA KAZUHISA (JP)
KOGURE HIROAKI (JP)
International Classes:
H01Q1/52; H01Q1/38; H01Q15/14; H05K9/00
Domestic Patent References:
WO2003010486A2 | 2003-02-06 |
Foreign References:
JP2005252876A | 2005-09-15 | |||
JP2002368644A | 2002-12-20 | |||
JPH03171385A | 1991-07-24 | |||
JP5088004B2 | 2012-12-05 | |||
JP3647446B1 | 2005-05-11 | |||
JP2005159337A | 2005-06-16 | |||
JPH07212079A | 1995-08-11 | |||
JP2001085212A | 2001-03-30 | |||
JP2001284109A | 2001-10-12 | |||
JP2002271127A | 2002-09-20 | |||
JP2002246828A | 2002-08-30 | |||
JP2002290092A | 2002-10-04 |
Attorney, Agent or Firm:
SAIKYO, Keiichiro et al. (2-6 Bingomachi 3-chome, Chuo-k, Osaka-shi Osaka 51, JP)
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