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High gain coplanar UHF RFID tag antenna using inductively coupled feed for metallic applications


Citation

Al Khanjar, Karrar Naji Salman and Ismail, Alyani and Saeedi, Tale (2015) High gain coplanar UHF RFID tag antenna using inductively coupled feed for metallic applications. In: 2015 IEEE 12th Malaysia International Conference on Communications (MICC 2015), 23-25 Nov. 2015, Kuching, Sarawak, Malaysia. (pp. 77-81).

Abstract / Synopsis

In this design, a coplanar slim antenna had been proposed and designed for UHF RFID (860-960) MHz metallic objects. The slim antenna was presented with proximity coupled feeding, two symmetrical coplanar ground layers, and a transmission line fed by a U-shaped inductively coupled feed. Furthermore, the U-shaped inductive feeder consisted of two opposing symmetrical U-shaped structures to feed the top radiator of the antenna. The size of the antenna was 97.5 × 50 × 1.5 mm3 at 915 MHz. As a result, the peak gain for the antenna reached up to 5 dBi at 915 MHz. Furthermore, the bandwidth of the antenna was 24.875 MHz (900.125-925) MHz (the power reflection coefficient was lower than -3 dB), while the reading range reached up to 11 meters. Besides, the results obtained from the measurement displayed very good impedance matching due to the flexibility generated by the U-shaped inductive feeder. Moreover, the results retrieved exhibited very good agreement with the results obtained from the simulations.


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Additional Metadata

Item Type: Conference or Workshop Item (Paper)
Divisions: Faculty of Engineering
DOI Number: https://doi.org/10.1109/MICC.2015.7725411
Publisher: IEEE
Keywords: Slim antenna; Coplanar; UHF RFID; U-shaped inductive feeder
Depositing User: Nabilah Mustapa
Date Deposited: 31 Jul 2017 17:01
Last Modified: 31 Jul 2017 17:01
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1109/MICC.2015.7725411
URI: http://psasir.upm.edu.my/id/eprint/56331
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