A bandwidth improved circular polarized slot antenna using a slot composed of multiple circular sectors

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal

39 Scopus Citations
View graph of relations


Related Research Unit(s)


Original languageEnglish
Article number5871304
Pages (from-to)3065-3070
Journal / PublicationIEEE Transactions on Antennas and Propagation
Issue number8
Publication statusPublished - Aug 2011


A circular polarized (CP) slot antenna is designed with a slot composed of multiple circular sectors (MCS). The design has advantages of having a wide 3 dB axial ratio (AR) bandwidth of 57.4%, achieving a good AR smaller than 2 dB in most areas of the frequency range. The design of the antenna follows a multi-objective optimization procedure that applies computational power rather than human tuning. A comparison of the optimized antenna design with other wideband CP antennas in the literature shows that it has advantages of having a smaller physical size in the cross-sectional area than the antennas with multiple feeding structures and a wider operating bandwidth than all the compared antennas. © 2011 IEEE.

Research Area(s)

  • Circuit optimization, circular polarization, slot antennas, wideband