Title:
ANTENNA APPARATUS AND ELECTRONIC DEVICE
Document Type and Number:
WIPO Patent Application WO/2017/126418
Kind Code:
A1
Abstract:
The present invention is provided with: a coil antenna (21) having a coil conductor wound around a coil opening (CA); and a planar conductor (metal part of a casing) (10) having a plane facing a part of the coil opening (CA) and facing a part of a range where the coil conductor is formed. The minimum separation distance between the coil opening (CA) and the planar conductor (10) in the normal direction of the planar conductor (10) is larger than the minimum separation distance between the coil conductor and the planar conductor (10) in the normal direction of the planar conductor (10). Further, for example, the planar conductor (10) has a first area (A1) overlapping the coil opening (CA) and a third area (A3) overlapping the outer edge of the coil conductor in a planar view of the coil opening (CA). When compared to the third area (A3), the first area (A1) is provided with a recessed part (10CP) recessed in a direction away from the coil conductor.
Inventors:
TAKAHASHI HIRONOBU (JP)
KOBAYASHI HIDEAKI (JP)
KOBAYASHI HIDEAKI (JP)
Application Number:
PCT/JP2017/000957
Publication Date:
July 27, 2017
Filing Date:
January 13, 2017
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
H01Q7/06; G06K19/077; H01Q1/24; H01Q1/38
Foreign References:
| JP2009038722A | 2009-02-19 | |||
| JP2014123858A | 2014-07-03 | |||
| JP2015149678A | 2015-08-20 |
Attorney, Agent or Firm:
KAEDE PATENT ATTORNEYS' OFFICE (JP)
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