Title:
WIRELESS TAG AND WIRELESS TAG SYSTEM
Document Type and Number:
WIPO Patent Application WO/2022/176550
Kind Code:
A1
Abstract:
Provided is a passive wireless tag (20) capable of identifying a predetermined command received, even when a response is being made to a wireless tag communication device. In the wireless tag (20), radiowaves are received as a predetermined command from a wireless tag communication device (10) via an antenna (21) and an RF switch (22). A detection circuit (23) detects a signal component from the received radiowaves. The detected signal component is sampled by a sampling circuit (26) in accordance with the timing of the RF switch (22) being turned ON by a predetermined control signal. In this case, the time interval of the ON state is set to be sufficiently short relative to a transfer period of the received radiowaves, and the predetermined command is identified by the control circuit (28) in accordance with a sampling result from the sampling circuit (26).
More Like This:
Inventors:
MITSUGI JIN (JP)
SAKABE HARUKI (JP)
SAKABE HARUKI (JP)
Application Number:
PCT/JP2022/002952
Publication Date:
August 25, 2022
Filing Date:
January 26, 2022
Export Citation:
Assignee:
UNIV KEIO (JP)
DENSO WAVE INC (JP)
DENSO WAVE INC (JP)
International Classes:
H04B5/02; G06K19/07; H04B1/59
Foreign References:
| JP2009135581A | 2009-06-18 |
Other References:
PEBAY-PEYROULA FLORIAN, REVERDY JACQUES: "A true full-duplex communication between HF contactless reader and card", 2011 IEEE INTERNATIONAL CONFERENCE ON RFID-TECHNOLOGIES AND APPLICATIONS, IEEE, 1 September 2011 (2011-09-01) - 16 September 2011 (2011-09-16), pages 473 - 478, XP055960331, ISBN: 978-1-4577-0028-6, DOI: 10.1109/RFID-TA.2011.6068681
LIU WANCHUN; HUANG KAIBIN; ZHOU XIANGYUN; DURRANI SALMAN: "Full-Duplex Backscatter Interference Networks Based on Time-Hopping Spread Spectrum", IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, IEEE SERVICE CENTER, PISCATAWAY, NJ., US, vol. 16, no. 7, 1 July 2017 (2017-07-01), US , pages 4361 - 4377, XP011656188, ISSN: 1536-1276, DOI: 10.1109/TWC.2017.2697864
CHAN PAK; FUSCO VINCENT: "Full duplex reflection amplifier tag", IET MICROWAVES, ANTENNAS & PROPAGATION, THE INSTITUTION OF ENGINEERING AND TECHNOLOGY, UNITED KINGDOM, vol. 7, no. 6, 23 April 2013 (2013-04-23), United Kingdom , pages 415 - 420, XP006045909, ISSN: 1751-8725, DOI: 10.1049/iet-map.2012.0441
KHALEDIAN SEIRAN; FARZAMI FARHAD; SMIDA BESMA; ERRICOLO DANILO: "Two-Way Backscatter Communication Tag Using a Reflection Amplifier", IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS, IEEE SERVICE CENTER, NEW YORK, NY., US, vol. 29, no. 6, 1 June 2019 (2019-06-01), US , pages 421 - 423, XP011728534, ISSN: 1531-1309, DOI: 10.1109/LMWC.2019.2912299
P. CHANV. FUSCO: "Full duplex reflection amplifier tag", IET MICROWAVES, ANTENNAS & PROPAGATION, vol. 7, no. 6, 2013, pages 415 - 420
LIU WANCHUN; HUANG KAIBIN; ZHOU XIANGYUN; DURRANI SALMAN: "Full-Duplex Backscatter Interference Networks Based on Time-Hopping Spread Spectrum", IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, IEEE SERVICE CENTER, PISCATAWAY, NJ., US, vol. 16, no. 7, 1 July 2017 (2017-07-01), US , pages 4361 - 4377, XP011656188, ISSN: 1536-1276, DOI: 10.1109/TWC.2017.2697864
CHAN PAK; FUSCO VINCENT: "Full duplex reflection amplifier tag", IET MICROWAVES, ANTENNAS & PROPAGATION, THE INSTITUTION OF ENGINEERING AND TECHNOLOGY, UNITED KINGDOM, vol. 7, no. 6, 23 April 2013 (2013-04-23), United Kingdom , pages 415 - 420, XP006045909, ISSN: 1751-8725, DOI: 10.1049/iet-map.2012.0441
KHALEDIAN SEIRAN; FARZAMI FARHAD; SMIDA BESMA; ERRICOLO DANILO: "Two-Way Backscatter Communication Tag Using a Reflection Amplifier", IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS, IEEE SERVICE CENTER, NEW YORK, NY., US, vol. 29, no. 6, 1 June 2019 (2019-06-01), US , pages 421 - 423, XP011728534, ISSN: 1531-1309, DOI: 10.1109/LMWC.2019.2912299
P. CHANV. FUSCO: "Full duplex reflection amplifier tag", IET MICROWAVES, ANTENNAS & PROPAGATION, vol. 7, no. 6, 2013, pages 415 - 420
Attorney, Agent or Firm:
TOHDA, Kiyoshi (JP)
Download PDF: