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In this paper, optimal designs of three-ring concentric circular antenna arrays (CCAA) without and with central element feeding are reported. For each optimal design, optimal current excitation weights and optimal radii are determined having the objective of maximum Sidelobe Level (SLL) reduction. The optimization technique adopted is Particle swarm optimization with constriction factor and inertia...
In this paper, a circular array antennas lying on x-y plane is assumed. The array is assumed to have the maximum radiation along positive z-axis. Design goal in this paper is to find the optimum angular locations of the elements so as to get the radiation with the lowest possible maximum sidelobe (SLL) with least first null beamwidth (BWFN) increment. Optimum locations of elements are found using...
In this paper the synthesis of linear array geometry with minimum sidelobe level using a new class of Particle Swarm Optimization technique namely Novel Particle Swarm Optimization (NPSO) is described. The NPSO algorithm is a newly proposed, high-performance evolutionary algorithm capable of solving general N-dimensional, linear and nonlinear optimization problems. Compared to other evolutionary methods...
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