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Reseach Article

Generation of Narrow Beams using Differential Evolution Algorithm from Circular Arrays

by G. S. K. Gayatri Devi, G. S. N. Raju, P. V. Sridevi
International Journal of Computer Applications
Foundation of Computer Science (FCS), NY, USA
Volume 112 - Number 3
Year of Publication: 2015
Authors: G. S. K. Gayatri Devi, G. S. N. Raju, P. V. Sridevi
10.5120/19646-1235

G. S. K. Gayatri Devi, G. S. N. Raju, P. V. Sridevi . Generation of Narrow Beams using Differential Evolution Algorithm from Circular Arrays. International Journal of Computer Applications. 112, 3 ( February 2015), 20-27. DOI=10.5120/19646-1235

@article{ 10.5120/19646-1235,
author = { G. S. K. Gayatri Devi, G. S. N. Raju, P. V. Sridevi },
title = { Generation of Narrow Beams using Differential Evolution Algorithm from Circular Arrays },
journal = { International Journal of Computer Applications },
issue_date = { February 2015 },
volume = { 112 },
number = { 3 },
month = { February },
year = { 2015 },
issn = { 0975-8887 },
pages = { 20-27 },
numpages = {9},
url = { https://ijcaonline.org/archives/volume112/number3/19646-1235/ },
doi = { 10.5120/19646-1235 },
publisher = {Foundation of Computer Science (FCS), NY, USA},
address = {New York, USA}
}
%0 Journal Article
%1 2024-02-06T22:48:27.968210+05:30
%A G. S. K. Gayatri Devi
%A G. S. N. Raju
%A P. V. Sridevi
%T Generation of Narrow Beams using Differential Evolution Algorithm from Circular Arrays
%J International Journal of Computer Applications
%@ 0975-8887
%V 112
%N 3
%P 20-27
%D 2015
%I Foundation of Computer Science (FCS), NY, USA
Abstract

Concentric circular arrays are increasingly shown more interest in antenna design for generating low sidelobe patterns as they have radial symmetry and an invariant beam in the azimuthal plane. Such patterns are desirable in low EMI applications. In the present work, an attempt is made to generate low sidelobe patterns from concentric circular arrays by optimizing both ring radii and individual element excitations. The array is also subjected to thinning simultaneously. Thinning results in sidelobe reduction while keeping the number of active elements small. For each optimum configuration, the optimal ring radii and the amplitude excitation levels are obtained using Differential Evolution algorithm. Results are presented for 8, 10 concentric rings.

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Index Terms

Computer Science
Information Sciences

Keywords

Concentric Circular Array Antenna Array Thinning Optimization Sidelobe Reduction Differential Evolution.