Bandwidth Improvement of Planar RFID Tag Antennas using Characteristic Mode Theory

Pallavi Sharma, Jennifer T. Bernhard

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Planar antennas have been widely used in UHF RFID systems. Placement insensitivity and thin form factor are essential qualities of planar RFID tag antennas. As the antennas become thinner, most of the energy is stored within the region between the antenna and the ground plane resulting in the degradation of bandwidth and radiation characteristics. Serrations can be used as edge treatment to improve the bandwidth of planar antennas. The analysis of edge-treated planar antennas using characteristic mode theory is presented in this article. The effect on serrations on the resonant frequencies and radiation characteristics of resonant characteristic modes of a rectangular plate is presented and guidelines are presented for improving the bandwidth of planar antennas.

Original languageEnglish (US)
Title of host publication2022 16th European Conference on Antennas and Propagation, EuCAP 2022
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9788831299046
StatePublished - 2022
Event16th European Conference on Antennas and Propagation, EuCAP 2022 - Madrid, Spain
Duration: Mar 27 2022Apr 1 2022

Publication series

Name2022 16th European Conference on Antennas and Propagation, EuCAP 2022

Conference

Conference16th European Conference on Antennas and Propagation, EuCAP 2022
Country/TerritorySpain
CityMadrid
Period3/27/224/1/22

Keywords

  • Microstrip antenna
  • RFID
  • RFID tag
  • bandwidth improvement
  • edge treatment
  • planar antenna
  • serrations

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Electronic, Optical and Magnetic Materials
  • Instrumentation
  • Radiation

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