Title:
ANTENNA DEVICE AND WIRELESS COMMUNICATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2013/073314
Kind Code:
A1
Abstract:
To improve the degrees of freedom in the set-up of the antenna coil and to enable forming a hot spot at the desired location, an antenna device (4a) is provided with a main coil antenna (15) and a sub-coil antenna (16) connected to the main coil antenna (15). The coil opening of the sub-coil antenna (16) and the coil opening of the main coil antenna (15) are aligned in the lateral direction when viewed from the top so that the main coil antenna (15) and the sub-coil antenna (16) are magnetically coupled. In addition, the main coil antenna (15) and the sub-coil antenna (16) are wound so that the respectively generated magnetic fields have mutually inverted phases.
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Inventors:
TSUBAKI NOBUHITO (JP)
Application Number:
PCT/JP2012/076024
Publication Date:
May 23, 2013
Filing Date:
October 05, 2012
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
H01Q7/00; G06K17/00; G06K19/07; H01F17/00; H01F27/00
Foreign References:
JP2005352858A | 2005-12-22 | |||
JP2010226574A | 2010-10-07 | |||
JP2010198547A | 2010-09-09 | |||
JP2006048580A | 2006-02-16 | |||
JP2008310453A | 2008-12-25 | |||
JPH0669044A | 1994-03-11 |
Attorney, Agent or Firm:
PROFIC PC (JP)
Patent business corporation pro フィック patent firm (JP)
Patent business corporation pro フィック patent firm (JP)
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