A composite antenna with wide circularly polarized beamwidth

Lei Shi*, Houjun Sun, Xin Lu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

A circularly polarized (CP) composite antenna is studied in this article. The antenna unit is composed of a CP curl antenna and a CP omni-directional antenna with three pairs of tilted parasitic elements. Reasonable agreement between simulation and measurement is obtained. The proposed antenna has a 10-dB impedance bandwidth (S11 < -10 dB) of 35% and a 3-dB axial ratio (AR) bandwidth of 20%. The composite antenna and the reference antenna are compared in this article. The composite antenna can obtain a 3-dB power gain beamwidth of 110° and 3-dB AR beamwidth of 120°, when compared with those of the reference antenna with 95° and 95°, respectively. The characteristics of the composite antenna are also investigated.

Original languageEnglish
Pages (from-to)2461-2464
Number of pages4
JournalMicrowave and Optical Technology Letters
Volume51
Issue number10
DOIs
Publication statusPublished - Oct 2009

Keywords

  • Circularly polarized
  • Composite antenna
  • Wide beamwidth

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