Open AccessAn RFID Tag Using a Planar Inverted‐F Antenna Capable of Being Stuck to Metallic Objects
Author(s) -
Choi Wonkyu,
Son Hae Won,
Bae JiHoon,
Choi Gil Young,
Pyo Cheol Sig,
Chae JongSuk
Publication year - 2006
Publication title -
etri journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.295
H-Index - 46
eISSN - 2233-7326
pISSN - 1225-6463
DOI - 10.4218/etrij.06.0205.0082
Subject(s) - standing wave ratio , planar , loop antenna , ultra high frequency , radio frequency identification , antenna (radio) , electrical engineering , dipole antenna , acoustics , coaxial antenna , microstrip antenna , computer science , engineering , physics , computer graphics (images) , computer security
This letter presents the design for a low‐profile planar inverted‐F antenna (PIFA) that can be stuck to metallic objects to create a passive radio frequency identification (RFID) tag in the UHF band. The designed PIFA, which uses a dielectric substrate for the antenna, consists of a U‐slot patch for size reduction, several shorting pins, and a coplanar waveguide feeding structure to easily integrate with an RFID chip. The impedance bandwidth and maximum gain of the tag antenna are about 0.3% at 914 MHz for a voltage standing wave ratio (VSWR) of less than 2 and 3.6 dBi, respectively. The maximum read range is about 4.5 m as long as the tag antenna is on a metallic object.