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A novel miniature monopole tag antenna for passive UHF RFID applications
Author(s) -
Liu HsienWen,
Ku ChiaHao,
Yang ChangFa,
Wang TeShun
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.25596
Subject(s) - monopole antenna , omnidirectional antenna , ultra high frequency , electrical engineering , antenna (radio) , microstrip antenna , dipole antenna , radio frequency identification , microstrip , microwave , antenna measurement , impedance matching , coaxial antenna , engineering , electronic engineering , electrical impedance , computer science , telecommunications , computer security
A novel miniature monopole tag antenna for passive Ultra‐High Frequency (UHF) radio frequency identification (RFID) operation is presented.The antenna possesses a two‐sided structure that is printed on an FR4 substrate and fed by a 50‐Ω microstrip line. By properly using helical strips and vias, the antenna size can be reduced to a small volume of 10 ( L ) × 9.5 ( W ) × 0.8 ( H ) mm 3 to be easily integrated within various portable devices. A miniaturized quasi‐lumped circuit is also designed to attain a good impedance matching between the antenna and the chip. Experimental results demonstrate that the antenna has a suitable operating band about 914–939 MHz and also quite omnidirectional radiation pattern with appreciable gain. Moreover, the proposed compact tag antenna, capable of achieving a maximum readable range of about 5.6 m with an EIRP equal to 4 W, is well suited for RFID applications. © 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52:2770–2772, 2010; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.25596
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