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Frequency-Coded Chipless RFID Tags: Notch Model, Detection, Angular Orientation, and Coverage Measurements.

Jahangir Alam1, Maher Khaliel1,2, Abdelfattah Fawky1

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Summary
This summary is machine-generated.

This study explores frequency-coded chipless Radio Frequency Identification (RFID) tags, encoding data via resonator notch positions. It quantifies performance impacts from polarization mismatches and verifies maximum reading range under FCC UWB regulations.

Keywords:
angular dependencychipless RFIDmeasurements

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Area of Science:

  • Electrical Engineering
  • Electromagnetics
  • Wireless Communication

Background:

  • Chipless Radio Frequency Identification (RFID) technology offers a low-cost alternative to traditional RFID.
  • Frequency-coded chipless RFID utilizes resonator notch positions to encode data, affecting the signal's frequency spectrum.

Purpose of the Study:

  • To develop analytical models for frequency-coded chipless RFID tags.
  • To investigate the impact of polarization and orientation mismatches on tag detection.
  • To determine and experimentally verify the maximum reading range within regulatory limits.

Main Methods:

  • Developed an analytical model for resonator notches, considering notch position and quality factor.
  • Introduced a mathematical representation for Radar Cross Section (RCS) to analyze polarization and orientation effects.
  • Quantified detection performance influenced by incident wave mismatches.
  • Explained tag measurement errors and limitations.
  • Presented methods for measuring RCS- and retransmission-based tags.
  • Calculated and verified the maximum reading range under Federal Communications Commission (FCC) Ultra Wideband (UWB) regulations.

Main Results:

  • The notch analytical model effectively considers notch position and quality factor.
  • The RCS mathematical representation accounts for polarization and orientation angles.
  • Performance degradation due to polarization and orientation mismatches was quantified.
  • Tag measurement errors and limitations were comprehensively detailed.
  • Theoretical maximum reading range was calculated and experimentally validated.

Conclusions:

  • The developed models provide a comprehensive understanding of frequency-coded chipless RFID tag performance.
  • The study quantifies the impact of various parameters on detection and reading range.
  • Practical verification confirms the theoretical calculations within FCC UWB regulations.