Title:
NEAR-FIELD WIRELESS COMMUNICATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/131128
Kind Code:
A1
Abstract:
A near-field wireless communication device (101) comprises: a communication antenna (11) for near-field wireless communication formed along a plane; an interface circuit (12) that is connected to the communication antenna (11) and passes a near-field wireless communication signal; a wireless communication IC (NFC-IC (16)) that is connected to the interface circuit (12) and processes the near-field wireless communication signal; a power receiving coil (21L) disposed to surround the communication antenna (11) along the plane; a resonant capacitor (21C) constituting a power receiving resonance circuit (21) together with the power receiving coil (21L); and a rectifying and smoothing circuit (22) connected to the power receiving resonance circuit (21). The power receiving resonance circuit (21) resonates at a near-field wireless communication frequency, and a magnetic flux generated near the power receiving coil (21L) by a resonant current flowing through the power receiving resonance circuit (21) interlinks with the communication antenna (11).
Inventors:
HOSOTANI TATSUYA (JP)
NAGAI TAKAHIRO (JP)
NAGAI TAKAHIRO (JP)
Application Number:
PCT/JP2020/028968
Publication Date:
July 01, 2021
Filing Date:
July 29, 2020
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
G06K19/07; G06K19/077; H01F38/14; H01Q7/00
Domestic Patent References:
| WO2013065245A1 | 2013-05-10 |
Foreign References:
| JP2012196031A | 2012-10-11 | |||
| JP2004110854A | 2004-04-08 | |||
| JP2010200309A | 2010-09-09 |
Attorney, Agent or Firm:
KAEDE PATENT ATTORNEYS' OFFICE (JP)
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