Abstract:For the issue of thinned array synthesis, an optimized design method of genetic algorithm based on integer code is proposed. By the application of individual description manner using integer coding, the search space is greatly reduced on the premise of elements thinned ratio is maintained constant. Base on the optimal array in elements position distribution, the weight is further optimized with convex optimization, which improves the main-side-ratio of array pattern significantly.The validity and superiority of method is confirmed by the result of the simulation data.