Multiobjective space-only synthesis of concentric regular hexagonal antenna arrays

This work considers the problem of optimizing sidelobe (SLL) and directivity (D) for concentric regular hexagonal antenna arrays (CRHAA). The relation between and SLL and D is generally considered to be convex. An objective vector comprising of functions of SLL and D is proposed. The aim is to compare the convergences of the obtained SLL - D fronts of two bi-objective vectors: i) {SLL,D}, and ii) the proposed bi-objective vector. For simplicity in pattern computation, the elements are considered to be ideal, without loss of generality. A popular multiobjective optimization algorithm, named MOEA/D is utilized to obtain the pareto optimal fronts for the considered objective vectors. Results reveal that, proposed objective vector outperforms the {SLL,D} objective vector.