Exploiting phase measurements of EPC Gen2 RFID tags

Jordy Huiting, Hubert Flisijn, André B.J. Kokkeler, Gerard J.M. Smit

    Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

    39 Citations (Scopus)
    9 Downloads (Pure)

    Abstract

    This paper presents a 2d localization system for UHF RFID tags. By measuring the phase between the transmitted continuous wave and received backscatter from the tag at different frequencies, it is possible to estimate the distance between the reader and tag. By determining distance estimates to three antennas it is possible to determine a location of a tag with the help of trilateration. The location of the antennas has to be known and any error in distance measurement influences the location estimate. Mainly to overcome the expected impact of the environment on the distance estimate, we opt for the use of reference tags and the K-Nearest Neighbor (KNN) algorithm to derive a location. An experiment is done and results are compared with an KNN algorithm based on received signal strength. Furthermore some experiments are done to verify the use of phase measurements for the detection of stationary tags in a portal application.
    Original languageEnglish
    Title of host publication2013 IEEE International Conference on RFID-Technologies and Applications (RFID-TA)
    Place of PublicationPiscataway, NJ
    PublisherIEEE
    Pages1-4
    Number of pages4
    ISBN (Print)978-1-4673-4656-6
    DOIs
    Publication statusPublished - 4 Sept 2013
    Event2013 IEEE International Conference on RFID-Technologies and Applications, RFID-TA 2013 - Zon Regency Hotel, Johor Bahru, Malaysia
    Duration: 4 Sept 20135 Sept 2013

    Conference

    Conference2013 IEEE International Conference on RFID-Technologies and Applications, RFID-TA 2013
    Abbreviated titleRFID-TA
    Country/TerritoryMalaysia
    CityJohor Bahru
    Period4/09/135/09/13

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