Title:
ANTENNA DEVICE AND ELECTRONIC EQUIPMENT
Document Type and Number:
WIPO Patent Application WO/2014/148314
Kind Code:
A1
Abstract:
The present invention is provided with: an antenna substrate (11) on which an antenna coil (12) inductively coupled with a reader/writer (120) is looped; a metallic foil (3) which is provided to the antenna substrate (11) so that at least a part of the antenna coil (12) overlaps the same; and a magnetic sheet (20) which is arranged so as to overlap the antenna coil (12), and which draws magnetic fields into the antenna coil (12). At one side (11a) of the antenna coil (12), in which the current flowing in the conductive line of the antenna coil (12) circulates in one direction, the antenna coil (12) is closer to the reader/writer (120) than the magnetic sheet (20) is, and/or at the other side (11b) of the antenna coil (12), in which the current flowing in the conductive line of the antenna coil (12) circulates in the opposite direction, the magnetic sheet (20) is closer to the reader/writer (120) than the antenna coil (12) is. The metallic foil (3) only overlaps with said other side (11b) of the antenna coil (12).
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Inventors:
ORIHARA KATSUHISA (JP)
Application Number:
PCT/JP2014/056316
Publication Date:
September 25, 2014
Filing Date:
March 11, 2014
Export Citation:
Assignee:
DEXERIALS CORP (JP)
International Classes:
H01Q7/06; G06K17/00; G06K19/07; H01Q1/24
Domestic Patent References:
| WO2011077877A1 | 2011-06-30 | |||
| WO2013011865A1 | 2013-01-24 |
Foreign References:
| JP2011139533A | 2011-07-14 | |||
| JP2006129003A | 2006-05-18 | |||
| JP2012065368A | 2012-03-29 | |||
| JP2012060626A | 2012-03-22 |
Attorney, Agent or Firm:
KOIKE, Akira et al. (JP)
Akira Koike (JP)
Akira Koike (JP)
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