Tunable Folded-Patch UHF RFID Tag Antenna Design using Theory of Characteristic Modes

Sharif, A., Ouyang, J., Chattha, H. T. and Abbasi, Q. H. (2019) Tunable Folded-Patch UHF RFID Tag Antenna Design using Theory of Characteristic Modes. In: 2018 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, Boston, MA, USA, 8-13 July 2018, pp. 323-324. ISBN 9781538671023 (doi: 10.1109/APUSNCURSINRSM.2018.8608266)

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Abstract

In this paper, a tunable ultra-high frequency (UHF) radio frequency identification (RFID) tag antenna is proposed using characteristic modes analysis. The proposed tag consists of a folded-patch and a feeding loop stacked on two substrate layers. The folded patch wrapped around 2 mm thick FR4 substrate and is optimized using characteristic modes to resonate around 915 MHz. The inductive feeding loop provides matching with RFID chip. This tag covers American RFID band form 905 MHz to 928 MHz with 10 dB return loss and can be tunable to European band by adding copper strips. Moreover, the proposed design is low cost, because it does not require any via or shorting pin. Furthermore, the measured read range of this tag is 3.5 m and 5 m in free space and above 200×200 m 2 metal plate respectively.

Item Type:Conference Proceedings
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Abbasi, Professor Qammer
Authors: Sharif, A., Ouyang, J., Chattha, H. T., and Abbasi, Q. H.
College/School:College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
ISSN:1947-1491
ISBN:9781538671023
Copyright Holders:Copyright © 2018 IEEE
Publisher Policy:Reproduced in accordance with the copyright policy of the publisher

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