Title :
Large-area RFID reader antenna for smart shelf at UHF
Author :
Wu, Chin-Yang ; Du, Jinyang ; Ren, A.-K. ; Li, Jhin-Yu
Author_Institution :
Sch. of Electron. & Inf., Northwestern Polytech. Univ., Xi´an, China
Abstract :
The design concept, geometry, simulated and measured results of a large-area RFID reader antenna for the smart shelf at UHF are presented. The antenna is implemented by cascading two layers of microstrip lines and being terminated with a matched load. The proposed antenna can produce a uniform magnetic field even though the size of the antenna is large. It has a low far-field gain and adaptability of its dimension as per requirement. These properties make the antenna suitable for smart shelf RFID readers.
Keywords :
UHF antennas; magnetic fields; microstrip lines; radiofrequency identification; RFID reader antenna; UHF antenna; load matching; microstrip line; radio frequency identification; smart shelf; uniform magnetic field;
Journal_Title :
Electronics Letters
DOI :
10.1049/el.2012.1168
