Title :
Design Methods for 3D RFID Antennas Located on a Conducting Ground Plane
Author :
Galehdar, Amir ; Thiel, David V. ; O´Keefe, Steven G.
Author_Institution :
Centre for Wireless Monitoring & Applic., Griffith Univ., Nathan, QLD
Abstract :
Based on 2D meander line methods, 3 times 3 times 3 point, symmetrical, 3D dipole antennas structure was investigated exhaustively to identify those configurations with the highest efficiency and lowest resonant frequency for a fixed length. Maximum efficiency and input impedance occurs when adjacent high current segments in the antenna are oppositely directed. The optimal antenna structure was compressed and the effect of a nearby conducting plane was investigated. The meander line structure greatly improves antenna performance with a resonant frequency of 498 MHz and an efficiency of 62% when located on a conducting ground plane.
Keywords :
UHF antennas; dipole antennas; radiofrequency identification; 2D meander line methods; 3D RFID antennas; 3D dipole antennas; Hilbert curve; conducting ground plane; frequency 498 MHz; numerical electromagnetic code; optimal antenna structure; radio frequency identification; Batteries; Design methodology; Dipole antennas; Impedance; National electric code; RFID tags; Radiofrequency identification; Resonant frequency; UHF antennas; Wire; Antenna efficiency; Hilbert curve; Numerical Electromagnetic Code (NEC); Radio Frequency Identification (RFID); wire antenna;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
DOI :
10.1109/TAP.2008.2011227
