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2013 | OriginalPaper | Chapter

Single-Feed Wideband Circularly Polarized Antenna for UHF RFID Reader

Authors : Pham HuuTo, B. D. Nguyen, Van-Su Tran, Tram Van, Kien T. Pham

Published in: Multimedia and Ubiquitous Engineering

Publisher: Springer Netherlands

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Abstract

In this paper, a single-feed wideband circularly polarized antenna has been proposed for UHF RFID reader. This antenna is designed to cover the frequency range from 860 to 960 MHz. In this antenna, the main patch is a modified form of the conventional E-shaped patch to obtain a circular polarization. A parasite patch is placed at the same layer of main patch to enhance axial ratio bandwidth. A short-circuited cylinder is also added in main patch to broaden the impedance bandwidth. The 3 dB axial ratio bandwidth is over 11 %, from 850 to 960 MHz. The impedance bandwidth is of 17 % (850–1000 MHz). Thus, The impedance bandwidth and 3 dB axial ratio bandwidth totally covers the universal UHF RFID band (860–960 MHz). The simulated and measured results indicate that the proposed antenna will be a good candidate for UHF RFID reader system.

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Literature
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Wang P, Wen G, Li J, Huang Y, Yang L, Zhang Q (2012) Wideband circularly polarized UHF RFID reader antenna with high gain and wide axial ration beam widths. Prog Electromagn Res 129:365–385CrossRef
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Kwa HW, Qing X, Chen ZN (2008) Broadband single-fed single-patch circularly polarized antenna for UHF RFID applications. In: IEEE AP-S International Symposium on Antennas and Propagation, San Diego, pp 1–4
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Metadata
Title
Single-Feed Wideband Circularly Polarized Antenna for UHF RFID Reader
Authors
Pham HuuTo
B. D. Nguyen
Van-Su Tran
Tram Van
Kien T. Pham
Copyright Year
2013
Publisher
Springer Netherlands
Book
Multimedia and Ubiquitous Engineering

Print ISBN: 978-94-007-6737-9

Electronic ISBN: 978-94-007-6738-6

Copyright Year: 2013

DOI
https://doi.org/10.1007/978-94-007-6738-6_106