Title :
A two-square-aperture antenna excited by a probe on rectangular ground plane with elliptical parasitic patch for UHF-RFID reader
Author :
Suwalak, Rattapong ; Phongcharoenpanich, Chuwong
Author_Institution :
Center for Commun. & Inf. Technol., King Mongkut´´s Inst. of Technol. Ladkrabang, Bangkok
Abstract :
This paper presents a two-square-aperture antenna excited by a probe on rectangular ground plane with elliptical parasitic patch to radiate circularly polarized unidirectional beam. This antenna is proposed for installing at the reader of the Radio Frequency Identification (RFID) at Ultra High Frequency (UHF) band. The UHF-RFID has the bandwidth from 920 MHz to 925 MHz, and the center frequency is 923 MHz. The antenna structure is simple because of using the single probe to feed the aperture antenna for circular polarized radiation. The pattern is unidirectional beam with the directivity of 8.93 dBic and axial ratio of 0.10 dB at the center frequency. The obtained simulated bandwidth is 24 MHz.
Keywords :
UHF antennas; antenna radiation patterns; aperture antennas; microstrip antennas; radiofrequency identification; UHF-RFID Reader; antenna structure; circular polarized radiation; circularly polarized unidirectional beam; elliptical parasitic patch; radio frequency identification; rectangular ground plane; two-square-aperture antenna; ultra high frequency band; unidirectional beam pattern; Antenna feeds; Aperture antennas; Bandwidth; Dielectric substrates; Frequency; Microstrip antennas; Polarization; Probes; Radiofrequency identification; UHF antennas;
Conference_Titel :
Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology, 2008. ECTI-CON 2008. 5th International Conference on
Conference_Location :
Krabi
Print_ISBN :
978-1-4244-2101-5
Electronic_ISBN :
978-1-4244-2102-2
DOI :
10.1109/ECTICON.2008.4600434
