Synthesis of CCAA using Grey Wolf Optimizer

This paper presents thinned concentric circular arrays optimized for generating low sidelobe difference patterns. Wireless communication systems now a day require patterns with more directive characteristics with a precise control over sidelobe levels. Concentric Circular Antenna Arrays (CCAA) are drawing the attention of antenna designers as they offer several advantages over linear arrays. In this paper, CCAA are considered and radii of rings are varied and thinning is carried out simultaneously. Grey Wolf Optimization algorithm is used for array optimization. Results are presented for concentric circular arrays of variable number.