Title:
RFID TAG READING ANTENNA
Document Type and Number:
WIPO Patent Application WO/2020/021748
Kind Code:
A1
Abstract:
An RFID tag reading antenna (101) is provided with: a small loop antenna (10) configured from a first loop-shaped conductor (12) having a circumferential length shorter than one-quarter wavelength of the communication frequency; and a split-ring resonator (20) which has a second loop-shaped conductor (22) having a smaller opening than the first loop-shaped conductor (12) of the small loop antenna (10), and which is disposed at a location that is a predetermined distance from the surface formed by the first loop-shaped conductor (12). The RFID tag reading antenna (101) connects to an RFID tag, with which the RFID tag reading antenna (101) is to communicate, when the distance from the RFID tag to the split-ring resonator (20) is less than the distance from the small loop antenna (10) to the split-ring resonator (20).
Inventors:
UEKI NORIYUKI (JP)
Application Number:
PCT/JP2019/006437
Publication Date:
January 30, 2020
Filing Date:
February 21, 2019
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
G06K7/10; G06K19/077; H01Q7/00; H01Q19/02
Domestic Patent References:
| WO2018003362A1 | 2018-01-04 |
Foreign References:
| JP2000138621A | 2000-05-16 | |||
| JP2005323019A | 2005-11-17 | |||
| JP2003069335A | 2003-03-07 |
Attorney, Agent or Firm:
KAEDE PATENT ATTORNEYS' OFFICE (JP)
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