Title:
ANTENNA EQUIPMENT, ELECTRONIC DEVICE, AND METHOD FOR ADJUSTING INDUCTANCE OF ANTENNA EQUIPMENT
Document Type and Number:
WIPO Patent Application WO/2015/146298
Kind Code:
A1
Abstract:
The objective of the invention is to achieve compatibility between the communication capability of a large-sized reader/writer and that of a small-sized IC tag, thereby enhancing NFC communication characteristics. Antenna equipment, which is incorporated in an electronic device (30) and communicates with an external device via electromagnetic field signals, comprises: a loop antenna (11) having a width that is the size of the loop antenna (11) in the width direction thereof and that is defined by two edges (11a) of the loop antenna (11) remote by respective predetermined distances at least from the respective ones of the two edges of the casing (32) of the electronic device in the width direction thereof, said loop antenna (11) consisting of a winding antenna coil (12) that is inductively coupled to the external device; and a magnetic sheet (20) that is made from a magnetic substance and that is placed on the opposite side of the loop antenna to the side thereof facing the external device, said magnetic sheet (20) extending at least from the two edges of the loop antenna in the width direction thereof toward the two edges (32a) of the casing in the width direction thereof.
Inventors:
ORIHARA KATSUHISA (JP)
KOBO MASAHIRO (JP)
SAITO NORIO (JP)
KOBO MASAHIRO (JP)
SAITO NORIO (JP)
Application Number:
PCT/JP2015/053080
Publication Date:
October 01, 2015
Filing Date:
February 04, 2015
Export Citation:
Assignee:
DEXERIALS CORP (JP)
International Classes:
H01Q7/06; G06K17/00; G06K19/077; H01Q1/24
Domestic Patent References:
| WO2013011865A1 | 2013-01-24 | |||
| WO2013035820A1 | 2013-03-14 |
Attorney, Agent or Firm:
KOIKE, Akira et al. (JP)
Akira Koike (JP)
Akira Koike (JP)
Download PDF: