Compact and broadband circularly polarized ring antenna with wide beam-width for multiple global navigation satellite systems
Compact and broadband circularly polarized ring antenna with wide beam-width for multiple global navigation satellite systems作者机构:School of Electronic and Information EngineeringSouth China University of TechnologyGuangzhou 510640China
出 版 物:《Chinese Physics B》 (中国物理B(英文版))
年 卷 期:2012年第21卷第2期
页 面:521-525页
核心收录:
学科分类:080904[工学-电磁场与微波技术] 0809[工学-电子科学与技术(可授工学、理学学位)] 08[工学] 080401[工学-精密仪器及机械] 081105[工学-导航、制导与控制] 0804[工学-仪器科学与技术] 0825[工学-航空宇航科学与技术] 0811[工学-控制科学与工程]
基 金:supported by the NSFC-Guangdong (Grant No.U1035002) and NSFC-NSAF (Grant No.10976010) National Key Project of Science and Technology of China (Grant No. 2009ZX03006-003) the Technology Key Projects of Guangdong Province of China (Grant Nos.2009A080207006 and 2009A080207002)
主 题:global navigation satellite system annular ring antenna circular polarization wide beam-width
摘 要:A compact and broadband circularly polarized (CP) annular ring antenna with wide beam-width is proposed for multiple global navigation satellite systems (GNSS) in the L1 band. The annular ring is excited by two modified L-probes with quadrature phase difference. It has a 36.3% 10-dB return loss bandwidth and a 13% 3-dB axial ratio bandwidth, because of the orthogonal L-probes with 90° phase difference. The measured peak gain of the antenna is 3.9 dBic. It can detect the satellites at lower elevation as its half power beam-width (HPBW) is 113° in both the x-z and y-z planes, achieving a cross-polarization level of larger than 25 dB. Noticeably, the antenna achieves 89% size reduction compared with the conventional half wavelength patch antennas. It can be used in hand-held navigation devices of multiple GNSS such as COMPASS, Galileo, GPS and GLONASS.