ANTENNA COIL AND ANTENNA DEVICE - MURATA MANUFACTURING CO

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)

Application Number:

PCT/JP2007/061771

Publication Date:

February 14, 2008

Filing Date:

June 12, 2007

Export Citation:

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Assignee:

MURATA MANUFACTURING CO (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: