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Horizontal five‐arm folded dipole over metal screening plane for UHF RFID of dielectric objects
Author(s) -
Švanda Milan,
Polívka Milan
Publication year - 2010
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.25475
Subject(s) - ultra high frequency , antenna (radio) , dipole antenna , microwave , dipole , imaging phantom , dielectric , ground plane , electrical impedance , engineering , electrical engineering , slot antenna , acoustics , physics , optics , telecommunications , quantum mechanics
The article is concerned with the extremely low‐profile foam dielectric five‐arm folded dipole antenna, which was developed and manufactured. The aforementioned antenna is situated on the metal screening plane and is used for UHF RFID of dielectric objects. It is designed with a complex input impedance Z in = 22 + j195 Ω at 866 MHz. Its efficiency was evaluated by Wheeler cap method with and without enclosed a human body phantom, it accounts for ∼40%, irrespective of whether the phantom is enclosed or not. The preliminary test of the identification range in buildings corridor was performed. The identification range reaches as far as 15.8 m. © 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52:2291–2294, 2010; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.25475