A circularly polarized antenna with wide axial ratio beamwidth

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review

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Original languageEnglish
Article number5196744
Pages (from-to)3309-3312
Journal / PublicationIEEE Transactions on Antennas and Propagation
Issue number10 PART 2
Publication statusPublished - 2009


A novel circularly polarized (CP) antenna with wide angular coverage is presented. The proposed antenna is formed by two bowtie patch antennas and two electric dipoles. It can achieve an impedance bandwidth (SWR <1.6) of 41% and a 3-dB axial ratio bandwidth of 33%. For this design, very stable and symmetrical radiation patterns are obtained. In the axial ratio passband, the 3-dB beamwidth is 85°± 2° with a gain of 6.3 dBi ±0.3 dBi. The cross polarization is lower than -15 dB over a wide range of angles. For the entire half-power beamwidth, the axial ratio can be kept below 3 dB. © 2009 IEEE.

Research Area(s)

  • Antenna radiation patterns, Antennas, Circular polarization, Magnetic dipoles