In the recent years, the optimization techniques using evolutionary algorithms have been widely used to solve electromagnetic problems. These algorithms use thinning the antenna arrays with the aim of reducing the complexity and thus achieving the optimal solution and decreasing the side lobe level. To obtain the optimal solution, thinning is performed by removing some elements in an array thro...

Thinning antenna arrays through quantum Fourier transform (QFT) is proposed. Given the lattice of candidate locations for array elements, problem selecting which location has to be either occupied or not by an element formulated in computing (QC) framework and then addressed with ad-hoc design method based on a suitable implementation QFT algorithm. Representative numerical results are presente...

The application of new metaheuristic approach, Firefly algorithm, for the thinning of large multiple Concentric Circular dipole arrays is presented. A nine-ring Uniform Circular antenna array with central element feeding is considered. To analyze the effect of thinning, optimization is carried out with and without pre fixing the percentage value of thinning. The performance of the array in term...

Design of thinned elliptical antenna arrays of uniformly excited isotropic antennas using particle swarm optimization (PSO), is reported. Thinned arrays can generate directive beam with minimum side lobe level (SLL) without degrading the performance of fully populated antenna arrays significantly. Thinning of elliptical antenna arrays using PSO are optimized with different values of eccentricit...

1. Background In computer graphics and image processing a scene is often represented as an array of 0's and 1's. The set of 1's represents the object or objects in the scene and the set of 0's represents the background. The array is usually two-dimensional, but three-dimensional image arrays are produced by reconstruction from projections in applications such as computer tomography and electron...