中国物理B ›› 2012, Vol. 21 ›› Issue (2): 27701-027701.doi: 10.1088/1674-1056/21/2/027701

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张洪林,胡斌杰,章秀银   

  • 收稿日期:2010-06-29 修回日期:2011-08-12 出版日期:2012-01-30 发布日期:2012-01-30
  • 通讯作者: 胡斌杰,eebjiehu@scut.edu.cn E-mail:eebjiehu@scut.edu.cn

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

Zhang Hong-Lin(张洪林), Hu Bin-Jie(胡斌杰), and Zhang Xiu-Yin(章秀银)   

  1. School of Electronic and Information Engineering, South China University of Technology, Guangzhou 510640, China
  • Received:2010-06-29 Revised:2011-08-12 Online:2012-01-30 Published:2012-01-30
  • Contact: Hu Bin-Jie,eebjiehu@scut.edu.cn E-mail:eebjiehu@scut.edu.cn
  • Supported by:
    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).

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.

Key words: global navigation satellite system, annular ring antenna, circular polarization, wide beam-width

中图分类号:  (Permittivity (dielectric function))

  • 77.22.Ch
84.40.Dc (Microwave circuits) 84.40.Ba (Antennas: theory, components and accessories)