OPTIMIZATION OF NON-UNIFORM CIRCULAR ARRAYS WITH COVARIANCE MATRIX ADAPTATION EVOLUTIONARY STRATEGY

In this paper, a covariance matrix adaptation evolutionary strategy (CMA-ES) is employed for optimization design of non-uniform circular antenna arrays. To achieve minimum sidelobe levels with the constraint of a speciflc flrst null beamwidth, the CMA-ES is utilized to flnd out the optimal weights and geometry of the circular array. The three various circular ring arrays are solved via CMA-ES, and the results are presented for arrays of varying conflgurations. The design results obtained with CMA-ES are compared to the existing array designs in the literature and to those found by the other evolutionary algorithms. Comparison with the results of other algorithms reveals the superiority of the CMA-ES.