Title :
Low-Profile Meandered Patch Antennas for RFID Tags Mountable on Metallic Objects
Author :
Chen, Horng-Dean ; Tsao, Yu-Hung
Author_Institution :
Dept. of Optoelectron. & Commun. Eng., Nat. Kaohsiung Normal Univ., Kaohsiung, Taiwan
fDate :
7/2/1905 12:00:00 AM
Abstract :
This letter presents novel meandered patch antennas that are designed for ultrahigh frequency (UHF) band radio frequency identification (RFID) tags mountable on metallic objects. The antenna has a low-profile structure (0.8 mm thick). Meandering a long patch into several half-wavelength radiating elements makes the surface currents of all radiating elements in phase, thus achieving an enhanced antenna gain and a good reading range performance. In addition, the proposed antennas mounted on a 400 ?? 400 mm2 metal plate are studied. Little effect of the metal-plate size on the reading range is obtained.
Keywords :
UHF antennas; antenna radiation patterns; microstrip antennas; radiofrequency identification; antenna gain; half-wavelength radiating elements; low profile meandered patch antennas; ultrahigh frequency band radio frequency identification tags; Patch antenna; radio frequency identification (RFID); tag antenna;
Journal_Title :
Antennas and Wireless Propagation Letters, IEEE
DOI :
10.1109/LAWP.2010.2043711
