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Miniaturized printed Y AGI‐ U da antenna with high directivity for long range UHF RFID item tracking systems
Author(s) -
Kim J.H.,
Jeong M.G.,
Bae S.H.,
Lee W.S.
Publication year - 2017
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.30303
Subject(s) - ultra high frequency , antenna (radio) , microstrip antenna , directivity , reflector (photography) , microstrip , microwave , electrical engineering , engineering , telecommunications , physics , optics , light source
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 mm 2 (approximately 0.25 λ 0 × 0.14 λ 0 at 920 MHz). © 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 59:439–441, 2017