ANTENNA DEVICE - MURATA MANUFACTURING CO

Title:

ANTENNA DEVICE

Document Type and Number:

WIPO Patent Application WO/2008/050541

Kind Code:

A1

Abstract:

Disclosed is an antenna device reduced in size by decreasing the number of constituent components, wherein decrease in reliability due to heat of an internal heat-generating element can be suppressed. Specifically disclosed is an antenna device wherein circuit components such as a resistor (4), which is a heat-generating element, a capacitor (3) and a coil (2) are contained in a cylindrical case (10), which is open at one end and closed at the other end, together with a cover unit (7) and a bobbin unit (8). A heat conducting member (11) having a high heat conductivity is cast in the case (10) so that it hermetically seals the opening of the case (10) while embedding the resistor (4).

Inventors:

NAITO KENJI (JP)
SAKO YOSHIHIRO (JP)
OOI TAKAAKI (JP)

Application Number:

PCT/JP2007/067031

Publication Date:

May 02, 2008

Filing Date:

August 31, 2007

Export Citation:

Click for automatic bibliography generation Help

Assignee:

MURATA MANUFACTURING CO (JP)
NAITO KENJI (JP)
SAKO YOSHIHIRO (JP)
OOI TAKAAKI (JP)

International Classes:

H01Q1/24; H01Q7/08

Foreign References:

JP2004517503A	2004-06-10
JP2005295473A	2005-10-20
JP2006066470A	2006-03-09
JP2005304001A	2005-10-27
JP2006041353A	2006-02-09
JPH11214209A	1999-08-06