Particle swarm optimization of L-probe fed E-shaped patch antenna using single-objective function

Kwok L. Chung, Wai Yip Tam

Research output: Journal article publicationJournal articleAcademic researchpeer-review

2 Citations (Scopus)


An application of particle swarm optimization (PSO) for wideband patch antenna design is presented in this article. A PSO kernel is built on a MATLAB-driven MoM-based EM simulator FEKO. The chosen antenna geometry in this study is the E-shaped patch but excited by an L-probe feed. Ten geometrical parameters are optimized simultaneously with the use of a single-objective: impedance bandwidth broadening. The desired center frequency of this ceiling mounted WLAN (IEEE 802.11a/n) antenna is set at 5.5 GHz with butterfly beam operation. E-shaped patch geometry of higher order mode is obtained from the PSO-EM optimizer. The simulated results are verified by the experimental results that a ∼3.5 dBi gain at the elevation angles of ±36° and a >50% of 10-dB return-loss bandwidth are obtained at the price of high cross-polarization levels. This suggests that a multiobjective particle swarm optimization should be used for the wideband antenna design in the future study.
Original languageEnglish
Pages (from-to)702-706
Number of pages5
JournalMicrowave and Optical Technology Letters
Issue number3
Publication statusPublished - 1 Mar 2010


  • E-shaped patch antenna
  • L-probe feed
  • Multiobjective optimization
  • Particle swarm optimization

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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