A novel design of a cpw-fed single square-loop antenna for circular polarization

I. Chung Deng*, Ren Jie Lin, Qing Xiang Ke, Jia Min Huang, Kow-Ming Chang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


The experimental and simulated results for the proposed antenna are investigated in this article. Moreover, a novel broadband design of a circularly polarized (CP) single square slot antenna fed by a single coplanar waveguide is presented. By appropriately choosing the circumference of the square-loop, the length of the protruded strip, and the gap, this proposed antenna thus owns good CP radiation and good impedance match simultaneously at the frequency of 2.45 GHz. This proposed antenna has the fundamental resonant frequency of 2.5 GHz with the minimum return loss of -39.9 dB. Furthermore, its impedance bandwidth is 460 MHz or 18.4% and 3-dB axial-ratio (AR) bandwidth is 360 MHz or 14.4% at 2.5 GHz.

Original languageEnglish
Pages (from-to)1095-1100
Number of pages6
JournalJournal of the Chinese Institute of Engineers, Transactions of the Chinese Institute of Engineers,Series A/Chung-kuo Kung Ch'eng Hsuch K'an
Issue number6
StatePublished - 1 Jan 2008


  • Axial ratio
  • Circularly polarized
  • Coplanar waveguide
  • Square slot antenna

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