Title:
AUXILIARY ANTENNA FOR RFID, RFID COMMUNICATION DEVICE, AND RFID COMMUNICATION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2023/136012
Kind Code:
A1
Abstract:
An auxiliary antenna (201) for RFID couples with: an RFID tag antenna provided to an RFID tag (70B) that is attached to an article; and an RFID antenna. The auxiliary antenna (201) for RFID comprises: a conductive loop part for magnetic coupling to a coil antenna; dipole antenna parts (26, 27); and a capacitor having a capacitance that resonates with the inductance of the conductive loop part. Due to this configuration, obtained are: an auxiliary antenna 201 for RFID, configured so that RFID tags 70A, 70B, 70C and an RFID antenna can be arranged with a high degree of freedom with respect to positional relationship; and an RFID communication device provided with the auxiliary antenna 201 for RFID; and an RFID communication system that employs the RFID communication device.
Inventors:
MURAYAMA HIROMI (JP)
SUESADA TSUYOSHI (JP)
SAITO YOICHI (JP)
UEKI NORIYUKI (JP)
SUESADA TSUYOSHI (JP)
SAITO YOICHI (JP)
UEKI NORIYUKI (JP)
Application Number:
PCT/JP2022/045646
Publication Date:
July 20, 2023
Filing Date:
December 12, 2022
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
H01Q9/26; G06K19/077; H01Q7/00
Domestic Patent References:
| WO2018155382A1 | 2018-08-30 | |||
| WO2020001732A1 | 2020-01-02 |
Foreign References:
| JP2015047267A | 2015-03-16 | |||
| US20210236736A1 | 2021-08-05 |
Attorney, Agent or Firm:
KAEDE PATENT ATTORNEYS' OFFICE (JP)
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