Genetic Algorithm Optimization of a Dual Polarized Concentric Ring Array
Keywords:
Concentric ring array, genetic algorithms, optimization, phased array, planar array, spiral antenna, wideband arrayAbstract
We use a genetic algorithm to minimize the relative sidelobe level (RSLL) of a dual polarized concentric ring array. The optimization variables are the placement of uniformly weight spiral antennas in an aperture with a small area. We optimized a cost function with isotropic sources instated of spiral elements to make the cost function reasonable to evaluate. We developed approaches to calculate a faster cost function and reduce the number of function calls in the optimization. We then calculated the array with an approximation of the element pattern to evaluate its performances.
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References
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