Circularly Polarized Suspended Patch Antenna Fed by Modified L-Probe for UHF RFID Reader

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Date
2017-12
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Advisor
Referee
Mark
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Společnost pro radioelektronické inženýrství
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Abstract
Two reader antennas, which are designed using the L-probe-fed suspended patch, are designed for the UHF band. To generate circular polarization, the L-shaped probe is modified by including an extra bend to provide one more degree of tuning freedom to the reflection coefficient without affecting the axial-ratio performance much. The proposed single-element reader antenna is able to achieve a CP bandwidth of 5.5 % (890 MHz - 940 MHz) and a maximum antenna gain of 9.7 dBi. When designed into a 2x2 array, the proposed reader antenna is able to produce CP bandwidth of 5.3 % (910 MHz - 960 MHz) with an antenna gain of 14.7 dBi. The read ranges of the proposed antenna and its array are 6.3 m and 10.9 m, respectively.
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Citation
Radioengineering. 2017 vol. 26, č. 4, s. 1033-1040. ISSN 1210-2512
http://www.radioeng.cz/fulltexts/2017/17_01_1033_1040.pdf
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Peer-reviewed
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Published version
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en
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Creative Commons Attribution 4.0 International
https://creativecommons.org/licenses/by/4.0/
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