Compact and broadband circularly polarized ring antenna with wide beam-width for multiple global navigation satellite systems

doi:10.1088/1674-1056/21/2/027701

Abstract 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$^\circ$ 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$^\circ$ 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.

Keywords: global navigation satellite system annular ring antenna circular polarization wide beam-width

Received: 29 June 2010
Revised: 12 August 2011
Accepted manuscript online:

PACS:	77.22.Ch	(Permittivity (dielectric function))
	84.40.Dc	(Microwave circuits)
	84.40.Ba	(Antennas: theory, components and accessories)

Fund: Project 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), and the Technology Key Projects of Guangdong Province of China (Grant Nos. 2009A080207006 and 2009A080207002).

Corresponding Authors: Hu Bin-Jie,eebjiehu@scut.edu.cn
E-mail: eebjiehu@scut.edu.cn

Cite this article:

Zhang Hong-Lin(张洪林), Hu Bin-Jie(胡斌杰), and Zhang Xiu-Yin(章秀银) Compact and broadband circularly polarized ring antenna with wide beam-width for multiple global navigation satellite systems 2012 Chin. Phys. B 21 027701

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Compact and broadband circularly polarized ring antenna with wide beam-width for multiple global navigation satellite systems

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