Title :
Compact broad-band annular ring antenna for global navigation satellite systems
Author :
Zhang, Hong-Lin ; Zhang, Xiu Yin ; Hu, Bin-Jie
Author_Institution :
Sch. of Electron. & Inf. Eng., South China Univ. of Technol., Guangzhou, China
fDate :
Nov. 29 2010-Dec. 2 2010
Abstract :
A compact circularly polarized annular ring antenna is proposed for global navigation satellite systems (GNSS). The antenna is excited by two L-probes connected to the 90± power divider printed on the back. The high impedance of the annular ring working at TM11 mode is transformed to low values by the L-probes. The antenna has a 44.2% 10-dB return loss bandwidth and a 37.8% 3-dB axial ratio bandwidth, respectively, due to the L-probes and the power divider. The gain bandwidth of the antenna is sufficiently enough to cover the bands of COMPASS, Galileo, GPS and GLONASS systems around 1.575 GHz.
Keywords :
antenna feeds; broadband antennas; loop antennas; power dividers; probes; satellite navigation; COMPASS; GLONASS systems; GPS; Galileo; L-probes; compact broad-band annular ring antenna; compact circularly polarized annular ring antenna; gain 3 dB; global navigation satellite system; loss 10 dB; power divider;
Conference_Titel :
Antennas Propagation and EM Theory (ISAPE), 2010 9th International Symposium on
Conference_Location :
Guangzhou
Print_ISBN :
978-1-4244-6906-2
DOI :
10.1109/ISAPE.2010.5696429
