Title:
ANTENNA DEVICE, NON-CONTACT TRANSMISSION DEVICE, AND NON-CONTACT TRANSMISSION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2018/139519
Kind Code:
A1
Abstract:
An antenna device (101) has: a first coil antenna (1); a second coil antenna (22), both ends of which are connected to an NFC system circuit (21), said second coil antenna being provided for a second non-contact transmission system; and switch circuits (SW1, SW2) that perform switching between a first state wherein a power transmission system circuit (11) is connected to both the ends of the first coil antenna (1), and a second state wherein both the ends of the first coil antenna (1) are connected to each other. In the first state, transmission is performed using a first non-contact transmission system, and in the second state, the second coil antenna (22) and the first coil antenna (1) are coupled to each other by means of magnetic field coupling, and transmission is performed using the second non-contact transmission system.
More Like This:
| JP2002541565 | INDUSTRIAL APPLICABILITY A table provided with an integrated reading device. |
| JP2004213217 | READER/WRITER FOR DATA CARRIER |
| JP2003133840 | DUAL LOOP ANTENNA AND ARRAY THEREOF |
Inventors:
SUESADA TSUYOSHI (JP)
TAKAHASHI HIRONOBU (JP)
TAKAHASHI HIRONOBU (JP)
Application Number:
PCT/JP2018/002230
Publication Date:
August 02, 2018
Filing Date:
January 25, 2018
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
H01Q7/00; H02J50/12; H02J50/40; H04B5/02
Domestic Patent References:
| WO2015099065A1 | 2015-07-02 | |||
| WO2012033031A1 | 2012-03-15 |
Foreign References:
| JP3200838U | 2015-11-12 | |||
| JP2012019302A | 2012-01-26 | |||
| JP2011015005A | 2011-01-20 | |||
| JP2012129975A | 2012-07-05 |
Attorney, Agent or Firm:
KAEDE PATENT ATTORNEYS' OFFICE (JP)
Download PDF: