Dual-band circularly polarized dual-slot antenna with a dielectric cover

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

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Original languageEnglish
Article number5109639
Pages (from-to)3757-3764
Journal / PublicationIEEE Transactions on Antennas and Propagation
Issue number12
Publication statusPublished - Dec 2009


A new circularly-polarized (CP) dual-slot antenna fed by a single L-probe is proposed for dual-band applications. The antenna consists of a zonal slot and an annular slot, both of them being cut onto a square conducting cavity with a protective dielectric cover. It is observed that the resonance frequencies of the lower and upper bands are controlled by the zonal and annular slots, respectively, making designs of the dual-band antenna very easy. To demonstrate the idea, the proposed antenna was designed at 2.4/5.8 GHz for two IMS bands. The reflection coefficient, axial ratio, radiation pattern and gain of the dual-band antenna were studied, and reasonable agreement between the simulated and measured results was obtained. A parametric study was carried out to characterize the proposed antenna. © 2009 IEEE.

Research Area(s)

  • Circular polarization, Dual-band, L-probe, Single feed, Slot antenna