Title :
Broadband circularly polarized microstrip antenna for RFID reader applications
Author :
Boo, Yan Shan ; Nasimuddin ; Chen, Z.N. ; Alphones, A.
Author_Institution :
Sch. of EEE, Nanyang Technol. Univ., Singapore, Singapore
Abstract :
A broadband single-feed compact circularly polarized stacked microstrip antenna for radiofrequency identification (RFID) reader applications is proposed and investigated. The proposed antenna achieved a gain of more than 5.0 dBic, impedance bandwidth with VSWR less than 2 and a wide 3-dB axial-ratio (AR) bandwidth of more than 12% over ultra-high frequency (UHF) band (840 - 940 MHz). The overall antenna size is 0.48¿o × 0.48¿o × 0.0984¿o at 900 MHz. The proposed antenna is attractive for RFID reader applications which require compact size and good circular polarization operation.
Keywords :
UHF antennas; broadband antennas; microstrip antennas; radiofrequency identification; RFID reader; VSWR; broadband circularly polarized microstrip antenna; circular polarization operation; frequency 840 MHz to 940 MHz; impedance bandwidth; radiofrequency identification reader; single-feed compact stacked microstrip antenna; ultra-high frequency band; Antenna measurements; Bandwidth; Broadband antennas; Coaxial components; Frequency; Microstrip antennas; Polarization; Probes; Radiofrequency identification; UHF antennas; Circular polarization; RFID; UHF; microstrip antenna;
Conference_Titel :
Microwave Conference, 2009. APMC 2009. Asia Pacific
Conference_Location :
Singapore
Print_ISBN :
978-1-4244-2801-4
Electronic_ISBN :
978-1-4244-2802-1
DOI :
10.1109/APMC.2009.5384142
