An RFID Tag Using a Planar Inverted-F Antenna Capable of Being Stuck to Metallic Objects

ETRI Journal

关键词: PIFA;    tag antenna;    RFID;   

Others  :  1185444
DOI  :  10.4218/etrij.06.0205.0082

【 摘 要 】

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.

   

【 参考文献 】

• [1]H. Nakano and K. Nakayama, "A Curved Spiral Antenna above a Conducting Cylinder," IEEE Trans. Antennas and Propagation, vol. 47, no. 1, Jan. 1999, pp. 3-8.
• [2]L. Ukkonen, L. Sydanheimo, and M. Kivikoski, "A Novel Tag Design Using Inverted-F Antenna for Radio Frequency Identification of Metallic Objects," Proc. 2004 IEEE/Sarnoff Symp. Advances in Wired and Wireless Communication, Apr. 2004, pp. 91-94.
• [3]W. Choi, Y. H. Cho, C. S. Pyo, and J. I. Choi, "A High-gain Microstrip Patch Array Antenna Using a Superstrate Layer," ETRI J., vol. 25, no. 5, Oct. 2003, pp. 407-411.
• [4]R. Chair, K. M. Luk, and K. F. Lee, "Simulation of Bandwidth Enhancement on the Quarter-wave Shorted Patch by Adding a Shorting Pin," Int. Symp. IEEE AP-s, vol. 1, 2001, pp. 82-85.