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A coplanar waveguide‐fed folded‐slot monopole antenna for 5.8 GHz radio frequency identification application
Author(s) -
Liu WenChung
Publication year - 2007
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.22051
Subject(s) - monopole antenna , coplanar waveguide , radiation pattern , dipole antenna , antenna measurement , antenna (radio) , antenna efficiency , slot antenna , microwave , physics , antenna tuner , antenna factor , electrical engineering , coaxial antenna , loop antenna , acoustics , electronic engineering , engineering , telecommunications
Design of a simple coplanar waveguide (CPW)‐fed patch antenna for radio frequency identification (RFID) application is presented. The radiation mechanism of such an antenna has been investigated, based on a moment‐method numerical analysis and experimental measurement. The antenna with a symmetrical folded slot to become a U‐shaped monopole can excite 5.8 GHz resonance mode with impedance bandwidth of 490 MHz, average antenna gain of ≥4.1 dBi, and monopole‐like radiation patterns but has a compact antenna size. These properties make the antenna suitable for use in RFID tags. In addition, an equivalent circuit model for such kind of antenna is also presented to account for its radiation characteristics. Good agreement between the simulated and modelled results has been obtained. © 2006 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 71–74, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22051