Pareto optimization of thinned planar arrays with elliptical mainbeams and low sidelobe levels

Joshua S. Petko, Douglas Henry Werner

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Abstract

A multi-objective Pareto genetic algorithm design methodology is applied to thinned planar arrays to simultaneously minimize peak side-lobe levels and target an elliptical mainbeam with specific minimum and maximum half-power beamwidths. This new radiation pattern synthesis technique for thinned planar arrays provides antenna engineers with a set of tradeoffs between low side-lobe levels and close adherence to mainbeam design objectives (i.e., the specified half-power beamwidths corresponding to the major and minor axes of an elliptical mainbeam). One Pareto optimization example is presented for a thinned low side-lobe planar array with a desired minimum and maximum beamwidth of 8.4° and 12° respectively. Two designs from the Pareto front are discussed, one with a -20.92 dB side-lobe level and beamwidths between 11.5° and 7.5° and a second with a -18.97 dB side-lobe level with beamwidths between 12° and 7.93°.

Original languageEnglish (US)
Article number5722998
Pages (from-to)1748-1751
Number of pages4
JournalIEEE Transactions on Antennas and Propagation
Volume59
Issue number5
DOIs
StatePublished - May 1 2011

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All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering

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