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Compact circularly polarized RFID tag antenna with an embedded U-shaped feedline for metallic surfaces
KTH, School of Electrical Engineering (EES), Electromagnetic Engineering.
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2014 (English)In: Progress in Electromagnetics Research Symposium, 2014, 1567-1571 p.Conference paper, Published paper (Refereed)
Abstract [en]

A passive radio frequency identification (RFID) tag antenna with circular polarization (CP) radiation is proposed to operate at 902-928MHz and mount on metallic surfaces. A U-shaped terminal short-circuited feedline welded to a tag-chip is embedded in a rectangular slot to achieve a coupled feeding and a good impedance matching. By employing two truncated corners and two L-shaped slots with unequal length on the patch, a good left-hand circular polarization (LHCP) and compact size are obtained. The measured impedance bandwidth of the antenna is 85MHz (875-960 MHz), while the simulated 3-dB CP bandwidth is 6MHz (912-918 MHz). The proposed tag antenna shows reasonable read ranges when mounted on the metal plate in the following experiment.

Place, publisher, year, edition, pages
2014. 1567-1571 p.
Series
Progress in Electromagnetics Research Symposium, ISSN 1559-9450
Keyword [en]
Bandwidth, Circular polarization, Electric impedance, Metallic compounds, Mobile antennas, Plate metal, Polarization, Radio frequency identification (RFID), Surface measurement, Circularly polarized, Coupled feeding, Left-hand circular polarizations, Measured impedance, Metallic surface, Radio-frequency-identification tags (RFID), Rectangular slots, RFID tag antennas, Antenna feeders
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:kth:diva-168863Scopus ID: 2-s2.0-84911192060ISBN: 9781934142288 (print)OAI: oai:DiVA.org:kth-168863DiVA: diva2:819818
Conference
Progress in Electromagnetics Research Symposium, PIERS 2014, 25 August 2014 through 28 August 2014
Note

QC 20150611

Available from: 2015-06-11 Created: 2015-06-09 Last updated: 2015-06-11Bibliographically approved

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CiteExportLink to record
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  • apa
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  • ieee
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  • de-DE
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Output format
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