Ranging of UHF RFID tag using stepped frequency read-out

Ville Viikari; Pekka Pursula; Kaarle Jaakkola

doi:10.1109/JSEN.2010.2045497

Ranging of UHF RFID tag using stepped frequency read-out

Ville Viikari, Pekka Pursula, Kaarle Jaakkola

Research output: Contribution to journal › Article › Scientific › peer-review

33 Citations (Scopus)

Abstract

This paper presents a phase-based method for obtaining the distance of an RFID tag with unknown properties. The tag's response is measured by the reader at several discrete frequencies at the threshold power of the tag. The dispersive properties of the modulated reflection coefficient of the tag are estimated from the measured power sensitivity and their effect is compensated in the distance estimation. The method is derived using a simple theoretical model for the tag and the performance of the method is experimentally verified at 860 MHz.

Original language	English
Pages (from-to)	1535-1539
Journal	IEEE Sensors Journal
Volume	10
Issue number	9
DOIs	https://doi.org/10.1109/JSEN.2010.2045497
Publication status	Published - 2010
MoE publication type	A1 Journal article-refereed

Keywords

radio frequency identification
RFID
tracking
transponders
wireless sensors

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10.1109/JSEN.2010.2045497

https://publications.vtt.fi/julkaisut/muut/2010/Ranging_of_UHF.pdf

Cite this

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abstract = "This paper presents a phase-based method for obtaining the distance of an RFID tag with unknown properties. The tag's response is measured by the reader at several discrete frequencies at the threshold power of the tag. The dispersive properties of the modulated reflection coefficient of the tag are estimated from the measured power sensitivity and their effect is compensated in the distance estimation. The method is derived using a simple theoretical model for the tag and the performance of the method is experimentally verified at 860 MHz.",

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KW - RFID

KW - tracking

KW - transponders

KW - wireless sensors

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Ranging of UHF RFID tag using stepped frequency read-out

Abstract

Keywords

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