Particle swarm optimization of L-probe fed E-shaped patch antenna using single-objective function
✍ Scribed by Kwok L. Chung; W. Y. Tam
- Publisher
- John Wiley and Sons
- Year
- 2010
- Tongue
- English
- Weight
- 460 KB
- Volume
- 52
- Category
- Article
- ISSN
- 0895-2477
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✦ Synopsis
Abstract
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. © 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52: 702–706, 2010; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.25016