Title :
High gain design of small axial mode helical antenna over a cylindrical cavity for RFID applications
Author :
Rimbault, N. ; Sharaiha, A. ; Collardey, Sylvain
Author_Institution :
IETR, Univ. de Rennes 1, Rennes, France
Abstract :
Increasing the range of Radio Frequency Identification (RFID) system without parasitic tag reading is a challenging problem. A small helix antenna with high gain for RFID reader covering UHF band of 860MHz-960MHz is presented in this article. We show that using a cylindrical shaped ground plane can increase the gain of helix antennas in several UHF RFID frequency bands. The cylindrical ground plane geometry has been simulated and optimized with HFSS software. The optimal structure has a total size of 680×680×300mm3 and exhibits a constant realized gain around 13.8dBic over a large bandwidth with a good axial ratio (less than 2dB).
Keywords :
UHF antennas; helical antennas; radiofrequency identification; HFSS software; RFID applications; RFID reader; UHF RFID frequency bands; axial mode helical antenna; cylindrical cavity; cylindrical ground plane geometry; frequency 860 MHz to 960 MHz; helix antennas; high-gain design; radiofrequency identification system; Antennas; Cavity resonators; Electromagnetics; Irrigation; Radiofrequency identification; Software; Cylindrical ground plane; Helix Antenna; High Gain; Radio Frequency Identification (UHF RFID); Reader antenna;
Conference_Titel :
RFID-Technologies and Applications (RFID-TA), 2012 IEEE International Conference on
Conference_Location :
Nice
Print_ISBN :
978-1-4673-4656-6
Electronic_ISBN :
978-1-4673-4658-0
DOI :
10.1109/RFID-TA.2012.6404562
