Title :
A novel circularly polarized dual-band slot antenna for RFID applications
Author :
Azarbar, A. ; Mashhadi, M. ; Ghalibafan, J.
Author_Institution :
Parand Branch, Islamic Azad Univ., Parand, Iran
Abstract :
In this paper, a new slot antenna is proposed for dual-band RFID applications. This antenna is designed to covers the frequency of ISM Bands (2.45GHz and 5.80GHz). In this antenna, two squared-slots are used for dual-band characteristic. Furthermore, some perturbations are set on an appropriate location to achieve circular polarization radiation. An L-shaped feed line is used for antenna excitation. The simulations results show that the proposed antenna has good circularly polarized radiations and the 3 dB axial-ratio bandwidth is more than 7.2% and 5.8% for first and second bands respectively. therefor, it is suitable to use for RFID as the reader antenna.
Keywords :
antenna feeds; antenna radiation patterns; microwave antennas; radiofrequency identification; slot antennas; ISM bands; L-shaped feed line; antenna excitation; circular polarization radiation; circularly polarized dual-band slot antenna; dual-band RFID applications; frequency 2.45 GHz; frequency 5.80 GHz; reader antenna; Antenna radiation patterns; Bandwidth; Dipole antennas; Dual band; Radiofrequency identification; Slot antennas; RFID; Slot antenna; circular polarization; dualband;
Conference_Titel :
GCC Conference and Exhibition (GCC), 2011 IEEE
Conference_Location :
Dubai
Print_ISBN :
978-1-61284-118-2
DOI :
10.1109/IEEEGCC.2011.5752511
