Title :
A broadband circularly polarized antenna
Author :
Xu, Junfeng ; Chen, Zhi Ning ; Qing, Xianming
Author_Institution :
Inst. for Infocomm Res., Singapore, Singapore
Abstract :
A right-handed circularly polarized antenna is proposed with a broadened bandwidth in terms of axial ratio, impedance matching and gain. The antenna consists of a suspended slotted patch and an L-shaped feeding probe. An antenna prototype with an overall size of 250 mm × 250 mm × 50 mm exhibits a measured mimimum gain of 6.4 dBic, axial ratio less than 3 dB, and reflection coefficient less than -10 dB over the frequency band of 800-960 MHz, which makes the antenna suitable for ultra high frequency (UHF) RFID applications.
Keywords :
UHF antennas; antenna feeds; broadband antennas; electromagnetic wave polarisation; impedance matching; microstrip antennas; radiofrequency identification; slot antennas; L-shaped feeding probe; UHF RFID applications; antenna prototype; axial ratio; frequency 800 MHz to 960 MHz; impedance gain; impedance matching; reflection coefficient; right-handed broadband circularly polarized antenna; suspended slotted patch; ultra high frequency RFID applications; Antenna measurements; Broadband antennas; Broadband communication; Frequency measurement; Gain; Gain measurement; broadband antenna; cicular polarization;
Conference_Titel :
Antennas and Propagation (APCAP), 2012 IEEE Asia-Pacific Conference on
Conference_Location :
Singapore
Print_ISBN :
978-1-4673-0666-9
DOI :
10.1109/APCAP.2012.6333131
