ANTENNA DEVICE AND COMMUNICATION TERMINAL DEVICE

Title:

ANTENNA DEVICE AND COMMUNICATION TERMINAL DEVICE

Document Type and Number:

WIPO Patent Application WO/2011/036963

Kind Code:

A1

Abstract:

A coil conductor (CW) shaped like a rectangular spiral is formed on a flexible substrate (10). A rectangular opening is formed in the middle of the region in which the coil conductor (CW) is formed, and a magnetic core (1) is inserted into said opening. The coil conductor (CW) is provided with a first conductive section (11) near a first principal surface (MS1) of the magnetic core (1) and a second conductive section (12) near a second principal surface (MS2) of the magnetic core (1). The magnetic core (1) and the coil conductor (CW) constitute an antenna coil (21). A circuit substrate (20) is provided with a region in which a ground electrode is formed (GA) and a region in which the ground electrode is not formed (NGA). The antenna coil (21) is mounted in the region of the circuit substrate (20) in which the ground electrode is not formed (NGA), arranged such that the first principal surface (MS1) of the magnetic core (1) faces the circuit substrate (20).

Inventors:

YOSUI KUNIAKI (JP)
KUBO HIROYUKI (JP)
ITO HIROMITSU (JP)

Application Number:

PCT/JP2010/063747

Publication Date:

March 31, 2011

Filing Date:

August 13, 2010

Export Citation:

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Assignee:

MURATA MANUFACTURING CO (JP)
YOSUI KUNIAKI (JP)
KUBO HIROYUKI (JP)
ITO HIROMITSU (JP)

International Classes:

H01Q7/06; G06K19/07; G06K19/077; H01Q1/24

Domestic Patent References:

WO2009078214A1	2009-06-25
WO2008053631A1	2008-05-08

Foreign References:

JP2000048152A	2000-02-18
JP3975918B2	2007-09-12

Other References: