UWB monopole antenna with circular polarization

Sharul Abdul Rahim, Sh Danesh, Uche Anicetus Okonkwo, Mursyidul Sabran, Mohsen Khalily

Research output: Contribution to journalArticlepeer-review

30 Citations (Scopus)


In this article, ultra-wideband (UWB) monopole antenna with circular polarization (CP) is designed and implemented. The proposed antenna consists of an asymmetric shaped radiator fed by a microstrip line and a limited ground plane on the back side of the substrate. The overall size of proposed antenna is 28 mm × 29 mm, which is suitable for mobile devices. The antenna is fabricated on inexpensive FR4 a dielectric constant of, loss tangent tan = 0.019 with thickness of 1.6-mm. The measured results show that the proposed monopole antenna has a very wide bandwidth from 2.98 to 10.93 GHz that covers the UWB application range and defined by 10-dB return loss. Furthermore, a very wide CP bandwidth of 3-dB axial ratio bandwidth that ranges from 7.18 to 10.01 GHz is achieved.

Original languageEnglish
Pages (from-to)949-953
Number of pages5
JournalMicrowave and Optical Technology Letters
Issue number4
Publication statusPublished - Apr 2012
Externally publishedYes


  • axial ratio
  • bandwidth
  • circular polarization
  • monopole antenna
  • ultra-wideband

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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