Miniaturized printed YAGI‐Uda antenna with high directivity for long range UHF RFID item tracking systems

ABSTRACT A miniaturized printed Yagi‐Uda antenna with high directivity for long‐range ultra‐high‐frequency radio frequency identification item tracking systems is presented. The proposed antenna consists of a meandered driven element and a reflector to obtain a compact size and high directivity. Usi...

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Bibliographic Details
Published in:Microwave and optical technology letters 2017-02, Vol.59 (2), p.439-441
Main Authors: Kim, J.‐H., Jeong, M.‐G., Bae, S.‐H., Lee, W.‐S.
Format: Article
Language:English
Subjects:
Antennas
Baluns
Circuit boards
Directivity
high directivity
Microwaves
miniaturized
printed Yagi‐Uda antenna
Radio frequency identification
Tracking systems
UHF
UHF RFID
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Summary:ABSTRACT A miniaturized printed Yagi‐Uda antenna with high directivity for long‐range ultra‐high‐frequency radio frequency identification item tracking systems is presented. The proposed antenna consists of a meandered driven element and a reflector to obtain a compact size and high directivity. Using a printed microstrip balun, the proposed antenna is fed by a 50‐Ω microstrip line in a printed circuit board. The peak gain and maximum front‐to‐back ratio of the proposed antenna are ∼4.5 dBi and 17 dB at the authorized UHF RFID band in Korea, respectively. The antenna physical size is 80 × 45.5 mm2 (approximately 0.25λ0 × 0.14 λ0 at 920 MHz). © 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 59:439–441, 2017
ISSN:0895-2477
1098-2760
DOI:10.1002/mop.30303