Title:
ANTENNA COIL AND ANTENNA DEVICE
Document Type and Number:
WIPO Patent Application WO/2008/018231
Kind Code:
A1
Abstract:
An antenna coil (1) formed by wrapping a flexible board (3) around a magnetic core
(2). A conductor is formed on the flexible board (3) to form a first coil section
(4a) and second coil section (4b) on both sides of the magnetic core (2) excluding
the center section. A portion between the first coil section (4a) and the second
coil section (4b) that are on the main surface of the magnetic core (2) is a non-wrapped
section (5) where the conductor is not formed. The antenna coil interlinks with
a magnetic flux in the direction perpendicular to the main surface of the antenna
coil to perform highly sensitive communications.
Inventors:
KUBO HIROYUKI (JP)
ITO HIROMITSU (JP)
YOSUI KUNIAKI (JP)
ITO HIROMITSU (JP)
YOSUI KUNIAKI (JP)
Application Number:
PCT/JP2007/061771
Publication Date:
February 14, 2008
Filing Date:
June 12, 2007
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
KUBO HIROYUKI (JP)
ITO HIROMITSU (JP)
YOSUI KUNIAKI (JP)
KUBO HIROYUKI (JP)
ITO HIROMITSU (JP)
YOSUI KUNIAKI (JP)
International Classes:
H01Q7/06; H01F17/00
Foreign References:
JPH11225097A | 1999-08-17 | |||
JPS6413710A | 1989-01-18 | |||
JP2004153649A | 2004-05-27 | |||
JP2004166175A | 2004-06-10 | |||
JP2005333244A | 2005-12-02 | |||
JPH10185962A | 1998-07-14 | |||
JP2003022912A | 2003-01-24 |
Other References:
See also references of EP 2051329A4
Attorney, Agent or Firm:
KOMORI, Hisao (Noninbashi Chuo-ku, Osaka-sh, Osaka 11, JP)
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