Abstract
Several compact, low profile and metal-attachable RFID tag antennas with a loop-fed method are proposed for UHF RFID systems. The structure of the proposed antennas comprise of two parts: (1) The radiator part consists of two shorted patches, which can be treated as two quarter-wave patch antennas or a cavity. (2) A small loop printed on the paper serves as the feeding structure. The small loop provides the needed inductance for the tag and is connected to the RFID chip. The input impedance of the antenna can be easily adjusted by changing loop dimensions. The antenna has the compact size of 80 mm x 25 mm x 3.5 mm, and the realized gain about -3.6 dB. The measured results show that these antennas have good performance when attached onto metallic surfaces. © 2011 IEEE.
Recommended Citation
P. H. Yang et al., "Compact Metallic RFID Tag Antennas With A Loop-fed Method," IEEE Transactions on Antennas and Propagation, vol. 59, no. 12, pp. 4454 - 4462, article no. 5991909, Institute of Electrical and Electronics Engineers, Dec 2011.
The definitive version is available at https://doi.org/10.1109/TAP.2011.2165484
Department(s)
Electrical and Computer Engineering
Keywords and Phrases
Compact antenna; feeding network; low profile; metallic surface; RFID tag antenna
International Standard Serial Number (ISSN)
0018-926X
Document Type
Article - Journal
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2024 Institute of Electrical and Electronics Engineers, All rights reserved.
Publication Date
01 Dec 2011
Comments
Innovation and Technology Fund, Grant ITS/159/09