Publication detail

Phase of Arrival Ranging Method for UHF RFID Tags Using Instantaneous Frequency Measurement

POVALAČ, A. ŠEBESTA, J.

Original Title

Phase of Arrival Ranging Method for UHF RFID Tags Using Instantaneous Frequency Measurement

English Title

Phase of Arrival Ranging Method for UHF RFID Tags Using Instantaneous Frequency Measurement

Type

conference paper

Language

en

Original Abstract

The paper gives an overview of the phase of arrival (PoA) and time of arrival (ToA) techniques for distance measurement of UHF RFID tags. It introduces a new method based on the evaluation of received signal phase change during a linear frequency modulation (LFM) chirp. The phase of signal arrival is converted to the instantaneous frequency of a FMCW beat using a delay-multiply FSK demodulator with signal level normalization. Range estimation is afterwards calculated from the averaged instantaneous frequency. The mathematical description is verified by the simulation of the ranging process in MATLAB. The final part describes the techniques for commercial EPC Class-1 Generation-2 RFID tags which allow the backscattering of defined harmonic frequency for a known time.

English abstract

The paper gives an overview of the phase of arrival (PoA) and time of arrival (ToA) techniques for distance measurement of UHF RFID tags. It introduces a new method based on the evaluation of received signal phase change during a linear frequency modulation (LFM) chirp. The phase of signal arrival is converted to the instantaneous frequency of a FMCW beat using a delay-multiply FSK demodulator with signal level normalization. Range estimation is afterwards calculated from the averaged instantaneous frequency. The mathematical description is verified by the simulation of the ranging process in MATLAB. The final part describes the techniques for commercial EPC Class-1 Generation-2 RFID tags which allow the backscattering of defined harmonic frequency for a known time.

Keywords

phase-of-arrival, PoA, time-of-arrival, ToA, RFID, ranging, chirp, delay-multiply, FSK, demodulator, instantaneous frequency, backscattering

RIV year

2010

Released

21.09.2010

Publisher

KoREMA

Location

Dubrovnik, Croatia

ISBN

978-953-6037-58-2

Book

ICECom 2010, Conference Proceedings (CD-ROM)

Pages from

1

Pages to

4

Pages count

4

URL

Documents

BibTex


@inproceedings{BUT34959,
  author="Aleš {Povalač} and Jiří {Šebesta}",
  title="Phase of Arrival Ranging Method for UHF RFID Tags Using Instantaneous Frequency Measurement",
  annote="The paper gives an overview of the phase of arrival (PoA) and time of arrival (ToA) techniques for distance measurement of UHF RFID tags. It introduces a new method based on the evaluation of received signal phase change during a linear frequency modulation (LFM) chirp. The phase of signal arrival is converted to the instantaneous frequency of a FMCW beat using a delay-multiply FSK demodulator with signal level normalization. Range estimation is afterwards calculated from the averaged instantaneous frequency. The mathematical description is verified by the simulation of the ranging process in MATLAB. The final part describes the techniques for commercial EPC Class-1 Generation-2 RFID tags which allow the backscattering of defined harmonic frequency for a known time.",
  address="KoREMA",
  booktitle="ICECom 2010, Conference Proceedings (CD-ROM)",
  chapter="34959",
  howpublished="electronic, physical medium",
  institution="KoREMA",
  year="2010",
  month="september",
  pages="1--4",
  publisher="KoREMA",
  type="conference paper"
}