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Patent Searching and Data


Title:
ANTENNA DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/012254
Kind Code:
A1
Abstract:
The purpose of the invention is to ensure higher communication performance without being subjected to structural constraints of an electronic instrument having an opening in a metal cover. Disclosed is an antenna device 1 that is built into an electronic instrument and that communicates with an external instrument by means of an electromagnetic signal, the antenna device comprising: an antenna coil 12 that is provided by winding a conducting wire 12a in a planar shape, and that is inductively coupled to the external instrument; a magnetic sheet 20 that is inserted through a coil opening 12b provided on the central side of the antenna coil, and that is arranged along the antenna coil so as to be superposed thereon; and a metal cover 5 that is arranged on an opposing surface side of the antenna coil opposing the external instrument, and that has an opened hole 6 formed close to an end part of the metal cover. The antenna coil is provided so as to be superposed at least on a region between the opened hole and an end part 5a of the metal cover on the back surface 5b opposite from the opposing surface 5c of the metal cover opposing the external instrument.

Inventors:
ORIHARA, Katsuhisa (Gate City Osaki East Tower 8F, 1-11-2, Osaki, Shinagawa-k, Tokyo 32, 〒1410032, JP)
Application Number:
JP2017/023216
Publication Date:
January 18, 2018
Filing Date:
June 23, 2017
Export Citation:
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Assignee:
DEXERIALS CORPORATION (Gate City Osaki, East Tower 8F 1-11-2, Osaki, Shinagawa-k, Tokyo 32, 〒1410032, JP)
International Classes:
H01Q1/24; G06K19/077; H01Q1/38; H01Q7/06; H04B5/02
Foreign References:
JP2015136041A2015-07-27
JP2016058825A2016-04-21
JP2007325054A2007-12-13
Attorney, Agent or Firm:
KOIKE, Akira et al. (TORANOMON A&K IP BLDG, 5-13-7 Toranomon, Minato-k, Tokyo 01, 〒1050001, JP)
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