Dual-band dual-sense circularly-polarized CPW-Fed slot antenna with two spiral slots loaded

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

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  • Canhui Chen
  • E. K N Yung

Related Research Unit(s)


Original languageEnglish
Pages (from-to)1829-1833
Journal / PublicationIEEE Transactions on Antennas and Propagation
Issue number6
Publication statusPublished - 2009


A novel design of a dual-band dual-sense circularly-polarized CPW-fed slot antenna with two spiral slots loaded is presented. The two loaded spiral slots in the ground plane can result in different senses of circular polarization. The dual-band operation is achieved by using the T-shape strip. The ratio of two frequencies is 1.375. The antenna is designed, fabricated, and measured. It is shown that the proposed antenna has good circular polarization characteristic. The measured 10 dB return loss impedance bandwidths are 8.7% for the lower band (RHCP) and 23% for the upper band (LHCP). The measured 3 dB axial-ratio bandwidths are 8.4% and 19.24%, with respect to 1.6 GHz (RHCP) and 2.2 GHz (LHCP), respectively. © 2009 IEEE.

Research Area(s)

  • Circular polarization, Coplanar waveguide (CPW)-fed, Dual band, Slot antenna