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N ear‐field UHF L‐shaped dipole antenna array with LC‐balun integration for item‐level tagging systems
Author(s) -
Jeong M.G.,
Kim J.H.,
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.30667
Subject(s) - balun , dipole antenna , antenna (radio) , ultra high frequency , dipole , impedance matching , physics , miniaturization , loop antenna , electrical engineering , electronic engineering , electrical impedance , computer science , engineering , optoelectronics , coaxial antenna , quantum mechanics
A near‐field UHF L‐shaped dipole antenna array with LC‐balun integration for item‐level tagging systems is proposed and investigated in this letter. The antenna consists of four dipole antennas and an impedance matching network with four LC‐baluns. Each dipole is fed by parallel stripline which connects to LC‐baluns for miniaturization. The proposed near‐field UHF dipole array can achieve not only the compact size (∼1/3λ 0 at 920 MHz) but also the seamless sensing of 100% read accuracy within the operating distance (up to 10.5 cm).