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

fYear

2012

fDate

23-27 July 2012

Firstpage

52

Lastpage

55

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/CSQRWC.2012.6294984

Filename

6294984