Title :
Aperture-coupled dual-band circularly polarized antenna for RFID reader applications
Author :
Hsu, Heng-Tung ; Huang, Ting-Jui
Author_Institution :
Dept. of Commun. Eng. & Commun. Res. Center, Yuan Ze Univ., Chungli, Taiwan
Abstract :
This paper presents the design and testing of an aperture-coupled dual-band and circularly-polarized antenna for RFID reader applications. The antenna was designed to cover both UHF (902 MHz ~ 928 MHz) and microwave (2.4 GHz ~ 2.5 GHz) bands. The coupling apertures were arranged orthogonally with proper phase offset to achieve circular polarization (CP) at both bands. The fabricated prototype exhibited good impedance bandwidth, an axial ratio of less than 3 dB, and 7dBi peak gain at both bands.
Keywords :
UHF antennas; aperture antennas; multifrequency antennas; radiofrequency identification; RFID reader applications; aperture-coupled dual-band circularly polarized antenna; axial ratio; frequency 2.4 GHz to 2.5 GHz; frequency 902 MHz to 928 MHz; impedance bandwidth; phase offset; Antenna measurements; Dual band; Frequency measurement; Radiofrequency identification; UHF antennas; UHF measurements; RFID; UHF; aperture-coupled; dual-band; microwave;
Conference_Titel :
Cross Strait Quad-Regional Radio Science and Wireless Technology Conference (CSQRWC), 2012
Conference_Location :
New Taipei City
Print_ISBN :
978-1-4673-1867-9
DOI :
10.1109/CSQRWC.2012.6294984
