Title :
Near-field coupling in UHF-RFID systems
Author :
Buffi, Alice ; Michel, A. ; Caso, R. ; Nepa, Paolo
Author_Institution :
Dept. of Inf. Eng., Univ. of Pisa, Pisa, Italy
Abstract :
In this paper near-field coupling in UHF-RFID systems is investigated. The wireless power transfer among reader and tag antennas is addressed through a numerical model involving different reader antennas and a short-range tag. System performance is investigated in terms of both mutual impedance and power transfer efficiency. Finally, a new nearfield reader antenna based on coplanar waveguide technology will be described.
Keywords :
UHF antennas; coplanar waveguides; radiofrequency identification; UHF RFID system; coplanar waveguide technology; near field coupling; numerical model; power transfer efficiency; reader antennas; short range tag; tag antennas; wireless power transfer; Couplings; Impedance; Loaded antennas; Noise measurement; Radiofrequency identification;
Conference_Titel :
Electromagnetic Theory (EMTS), Proceedings of 2013 URSI International Symposium on
Print_ISBN :
978-1-4673-4939-0
