Fast Optimization Method of Irregular Phased Antenna Array with Low Side-Lobe Level

A novel optimization method of irregular phased antenna array with low side-lobe level is proposed in this paper. The method is divided into two parts. At first, an Element Exchange Algorithm is proposed to achieve a fast generation of the irregular array tiling with high entropy, which is beneficial to grating-lobe suppression. Secondly, the amplitude and phase excitations are optimized through convex optimization (CVX) theory to realize low side-lobe level (SLL). The effectivity of the proposed method is verified in 16×16 irregular phased antenna arrays composed of 2-element, 4-element and 8-element subarrays.