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http://dx.doi.org/10.5515/KJKIEES.2008.19.6.603

RFID Noise Reduction Using a Multi-Coil Antenna  

Lee, Seong-Ho (Department of Electronic & Information Engineering, Seoul National University of Technology)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.19, no.6, 2008 , pp. 603-611 More about this Journal
Abstract
In this paper, we introduce a multi-coil antenna which is useful for reducing the effects of radio frequency noise in an inductively coupled RFID system. A multi-coil antenna is composed of a central coil and four subsidiary coils that are connected in series. A multi-coil antenna is designed so that the total noise disappear when the induced voltages of a central coil and subsidiary coils are added. The noise in a multi-coil antenna was about 30 dB lower than that in a single coil antenna. The multi-coil antenna is very effective in noise reduction even in an environment that the spatial distribution of RF noise is changed abruptly, and the induced noise was about 16 dB lower than that in a dual coil antenna.
Keywords
RFID; Noise Reduction; Multi-Coil; RF Noise; Coil Antenna;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
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