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Ultra-wideband quasi-circular monopole antennas with rectangular and trapezoidal grounds

  • Qi Wu*
  • , R. Jin
  • , J. Geng
  • *Corresponding author for this work
  • Shanghai Jiao Tong University

Research output: Contribution to journalArticlepeer-review

Abstract

Two planar quasi-circular monopole antennas with rectangular and trapezoidal grounds are presented. The impedance bandwidths of the two antennas, defined by measured return loss better than 10dB, are from 1.3 to 18.4GHz and from 1.1 to 13.5GHz, respectively. Both numerical and experimental results show that the proposed antenna with trapezoidal ground has significantly improved radiation performance, compared with the one with rectangular ground. Parameters and design considerations of the trapezoidal ground are discussed in detail. These novel monopole antennas have very wide impedance bandwidth, compact size and low fabrication cost, which are suitable for various broadband applications.

Original languageEnglish
Pages (from-to)55-61
Number of pages7
JournalIET Microwaves, Antennas and Propagation
Volume3
Issue number1
DOIs
StatePublished - 2009
Externally publishedYes

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