Title:
ANTENNA DEVICE AND COMMUNICATION TERMINAL DEVICE
Document Type and Number:
WIPO Patent Application WO/2012/173080
Kind Code:
A1
Abstract:
An antenna device comprises a power supply coil (10) which is connected to a power supply circuit, and a coil antenna (20) which is positioned adjacent to the power supply coil (10). A ferrite sheet (30) with a comparatively large magnetic loss term in a used frequency band is disposed between the power supply coil (10) and the coil antenna (20), and the power supply coil (10) and the coil antenna (20) are magnetically coupled via the ferrite sheet (30). With this configuration, the efficiency of transmission of signals between the power supply coil (10) and the coil antenna (20) is increased.
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Inventors:
NAKANO SHINICHI (JP)
KATO NOBORU (JP)
YOSUI KUNIAKI (JP)
KATO NOBORU (JP)
YOSUI KUNIAKI (JP)
Application Number:
PCT/JP2012/064888
Publication Date:
December 20, 2012
Filing Date:
June 11, 2012
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
NAKANO SHINICHI (JP)
KATO NOBORU (JP)
YOSUI KUNIAKI (JP)
NAKANO SHINICHI (JP)
KATO NOBORU (JP)
YOSUI KUNIAKI (JP)
International Classes:
H01Q7/00; G06K19/07; G06K19/077; H01Q1/24; H01Q1/38
Domestic Patent References:
| WO2011002050A1 | 2011-01-06 |
Foreign References:
| JP2009021970A | 2009-01-29 | |||
| JP3123411U | 2006-07-20 | |||
| JP2010171857A | 2010-08-05 | |||
| JP2010268286A | 2010-11-25 |
Attorney, Agent or Firm:
Kaede Patent Attorneys' Office (JP)
Patent business corporation Kaede Patent Attorneys' Office (JP)
Patent business corporation Kaede Patent Attorneys' Office (JP)
Download PDF:
Claims:
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