Title:
ANTENNA DEVICE, COMPOSITE ANTENNA DEVICE, AND ELECTRONIC DEVICES USING THESE DEVICES
Document Type and Number:
WIPO Patent Application WO/2015/029327
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide an antenna device which achieves the improvement of a communication characteristic and the prevention of falling of metallic magnetic particles by using, as a magnetic shield material, an article obtained by kneading and molding the metallic magnetic particles resistant to magnetic saturation and a binding material. An antenna device is provided with a magnetic shield material (2) formed by kneading and molding metallic magnetic powder and a binding agent, and a spiral coil (1) disposed on one surface of the magnetic shield material (2), and all surfaces of the antenna device is covered with cover sheets (3a, 3b). The number of these cover sheets is two, and the two cover sheets (3a, 3b) are closely attached to and completely cover the spiral coil (1) and the magnetic shield material (2), and the two cover sheets (3a, 3b) are bonded to each other on the outside of the magnetic shield material (2).
Inventors:
KUMURA TATSUO (JP)
Application Number:
PCT/JP2014/003911
Publication Date:
March 05, 2015
Filing Date:
July 24, 2014
Export Citation:
Assignee:
DEXERIALS CORP (JP)
International Classes:
H01Q7/06; H01F1/00; H01F1/26; H01F27/30; H01F27/36; H01Q21/28; H05K9/00
Foreign References:
| JP2004304370A | 2004-10-28 | |||
| JP2013138045A | 2013-07-11 | |||
| JP5045858B1 | 2012-10-10 | |||
| JP5077476B1 | 2012-11-21 |
Attorney, Agent or Firm:
SATO, MASARU (JP)
Masaru Sato (JP)
Masaru Sato (JP)
Download PDF: