DocumentCode
1359917
Title
Design of a double-layered spiral antenna for radio frequency identification applications
Author
Lee, Chi-Kwan ; Han, W.K. ; Park, Ikmo ; Choo, Hosung
Author_Institution
Sch. of Electron. & Electr. Eng., Hongik Univ., Seoul, South Korea
Volume
4
Issue
1
fYear
2010
fDate
1/1/2010 12:00:00 AM
Firstpage
121
Lastpage
127
Abstract
In this study, the authors describe a novel circularly polarised (CP) double-layered spiral antenna (DLSA) consisting of two main spiral radiators printed on a thin substrate, a feed line and a folded ground plane for a ultra-high-frequency (UHF) band radio frequency identification (RFID) reader. The proposed antenna exhibits broad impedance and CP bandwidth characteristics. The fabricated prototype has an axial ratio of less than 3 dB, a return loss of less than 10 dB over an 860 960 MHz range and a gain of 6.7 dB in the operating frequency range. This performance confirms that the proposed antenna is appropriate for commercial RFID use in the UHF band.
Keywords
UHF antennas; radiofrequency identification; spiral antennas; double-layered spiral antenna; radiofrequency identification; ultra-high-frequency band;
fLanguage
English
Journal_Title
Microwaves, Antennas & Propagation, IET
Publisher
iet
ISSN
1751-8725
Type
jour
DOI
10.1049/iet-map.2008.0315
Filename
5356100
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