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Title:
ANTENNA DEVICE AND ELECTRONIC DEVICE
Document Type and Number:
WIPO Patent Application WO/2017/122480
Kind Code:
A1
Abstract:
In an antenna device comprising a spiral coil antenna (10) and used in both a first non-contact transmission system and a second non-contact transmission system, the coil antenna (10) has an inner peripheral coil (11) and an outer peripheral coil (12) that are connected in series. An inner peripheral end (E11) of the inner peripheral coil (11) is connected to a first end of a first system circuit (1) and an outer peripheral end (E12) of the outer peripheral coil (12) is connected to a second end of the first system circuit (1). A connection section between the inner peripheral coil (11) and the outer peripheral coil (12) is connected to a first end of a second system circuit (2) and comprises a switch (3) that connects the inner peripheral end (E11) of the inner peripheral coil (11) or the outer peripheral end (E12) of the outer peripheral coil (12) to a second end of the second system circuit (2).

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Inventors:
OZAWA MASAHIRO (JP)
Application Number:
PCT/JP2016/086969
Publication Date:
July 20, 2017
Filing Date:
December 13, 2016
Export Citation:
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Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
H01Q7/00; H01Q1/24; H01Q9/14
Foreign References:
JP2012070529A2012-04-05
US20150318710A12015-11-05
Attorney, Agent or Firm:
KAEDE PATENT ATTORNEYS' OFFICE (JP)
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