Title:
MOBILE DEVICE
Document Type and Number:
WIPO Patent Application WO/2013/011709
Kind Code:
A1
Abstract:
[Problem] The purpose is to provide a mobile device adapted to prevent interference among a plurality of antennas, in a conventional mobile device having a plurality of antennas which experience a high degree of interference among radio waves. [Solution] A mobile device (101) equipped, in the interior of a housing (1), with a chargeable cell pack (4) employed as the power supply, a plurality of antennas (3) for near field communication with an external device, and a circuit board (9) on which a wiring pattern is formed; wherein the mobile device is characterized in that a first antenna (13) is disposed in a helical pattern on the outside peripheral end face (9p) side of the circuit board (9); a first magnetic body sheet (12) in which a powder magnetic body of flat shape is oriented in an in-plane direction is disposed in an annular pattern on the inside periphery of the helix of the first antenna (13); a second antenna (23) of spiral shape is disposed between the plane (9b) of the circuit board (9) and one surface of the housing (1); and a second magnetic body sheet (22) in which a powder magnetic body of flat shape is oriented in an in-plane direction is disposed in a planar shape between the second antenna (23) and the circuit board (9).
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Inventors:
TAKAGUCHI YASUSHI (JP)
ISHIGAKI ISAO (JP)
ISHIGAKI ISAO (JP)
Application Number:
PCT/JP2012/053429
Publication Date:
January 24, 2013
Filing Date:
February 14, 2012
Export Citation:
Assignee:
ALPS ELECTRIC CO LTD (JP)
TAKAGUCHI YASUSHI (JP)
ISHIGAKI ISAO (JP)
TAKAGUCHI YASUSHI (JP)
ISHIGAKI ISAO (JP)
International Classes:
H01Q1/52; H01Q1/24; H01Q7/00; H04M1/02
Foreign References:
| JP2008206297A | 2008-09-04 | |||
| JP2006005836A | 2006-01-05 | |||
| JP2009182883A | 2009-08-13 |
Attorney, Agent or Firm:
NOZAKI, Teruo et al. (JP)
Teruo Nozaki (JP)
Teruo Nozaki (JP)
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Claims: