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Compact tag antenna for UHF active RFID applications

Published online by Cambridge University Press:  09 January 2017

Jui-Han Lu  and
Zi-Hao Liou
Jui-Han Lu*
Affiliation:
Department of Electronic Communication Engineering, National Kaohsiung Marine University, Kaohsiung, Taiwan 81157, Republic of China
Zi-Hao Liou
Affiliation:
Department of Electronic Communication Engineering, National Kaohsiung Marine University, Kaohsiung, Taiwan 81157, Republic of China
*
Corresponding author: J.-H. Lu Email: jhlu@webmail.nkmu.edu.tw
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Abstract

By introducing an L-shaped metal plate connecting with the spiral monopole antenna, a planar compact ultra-high-frequency (UHF) tag antenna for radiofrequency identification system is proposed. With the overall antenna size of only 13 × 9 × 1.6 mm3, the proposed tag antenna provides the measured impedance bandwidth of 12 MHz to comply with Taiwan UHF operating band (922–928 MHz). The measured peak gain and antenna efficiency are approximately −1.1 dBi and 27% for Taiwan UHF band, respectively. Meanwhile, the measured reading distance can approach 250 m. Good tag sensitivity is obtained across the desired frequency band.

Keywords

TagUHFActive RFID system
Type
Research Papers
Information
International Journal of Microwave and Wireless Technologies , Volume 9 , Special Issue 7: EuCAP 2016 special issue , September 2017 , pp. 1427 - 1432
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2017 

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