Tampere University of Technology

TUTCRIS Research Portal

Dual-layer circularly polarized split Ring resonator inspired antenna for wearable UHF RFID tag

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

Details

Original languageEnglish
Title of host publication2018 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting
PublisherIEEE
Number of pages2
ISBN (Electronic)978-1-5386-7102-3
ISBN (Print)978-1-5386-7103-0
DOIs
Publication statusPublished - Jul 2018
Publication typeA4 Article in a conference publication
EventIEEE International Symposium on Antennas and Propagation and USNC-URSI National Radio Science Meeting -
Duration: 1 Jan 1900 → …

Publication series

Name
ISSN (Electronic)1947-1491

Conference

ConferenceIEEE International Symposium on Antennas and Propagation and USNC-URSI National Radio Science Meeting
Abbreviated titleAPS/USNC-URSI
Period1/01/00 → …

Abstract

We present a circularly polarized antenna for wearable passive UHF RFID tag. The antenna consists of two layers without a physical connection. The upper layer is for achieving circular polarization by two orthogonal meandering dipoles connected to a split ring. The lower layer is a split ring resonator structure to achieve complex conjugate impedance matching with the RFID IC. The antenna has the maximum dimension of π × 222 × 3 mm3 and it provided a 3-dB axial-ratio bandwidth of 23 MHz (905-928 MHz) in the simulation. The estimated maximum attainable read range of the tag exceeds two metres.

Keywords

  • Circular polarization; crossed dipole; radio frequency identification; wearable antenna

Publication forum classification