Design of aperiodic planar arrays for isoflux radiation in GEO satellites by applying evolutionary optimization

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• 作者：Alberto Reyna^a ; ^b ; Marco A. Panduro^a ; ^{mamendoza@uat.edu.mx} ; ^{pandurom@yahoo.com} ; Carlos del Rio-Bocio^b ; ^{armjaguar@hotmail.com}
• 关键词：Aperiodic array ; Isoflux radiation ; Array factor ; Satellite applications
• 刊名：Expert Systems with Applications
• 出版年：2012
• 出版时间：15 June, 2012
• 年：2012
• 卷：39
• 期：8
• 页码：6872-6878
• 全文大小：3490 K

文摘

The design of an aperiodic planar array is presented in this research. This design of aperiodic arrays considers the reduction of the side lobe level and the isoflux radiation requirements for GEO (Geostationary Earth Orbit) satellite applications. In this way, it is considered four different optimization cases. The first two cases are optimizations of amplitude and phase excitations for the antenna elements in a uniform antenna array and the last two cases are optimizations of positions of the antenna elements and certain number of levels of amplitude excitation in an aperiodic array. In this case, it is proposed a simple new approach combining the main idea of both thinned theory and random arrays approaches. For this optimization problem, the well-known method of Genetic Algorithms (GA) is utilized. The obtained results show the proper performance of the array factor to provide the isoflux radiation and low side lobe level. Depending on the performance requirements, the design of the aperiodic array could lead the satellite hardware to be reduced significantly even more that results presented previously in the literature.