Low sidelobe design by position perturbation in mobile array antenna for satellite communications

This work presents the low sidelobe pattern design of a mobile terminal antenna for satellite communications. This is important to protect interferences from neighboring satellites, which is regularized by international unions such as ITU. To synthesize the array beam pattern with low sidelobes, the position of the array elements is perturbed and optimized by a genetic algorithm. In addition, the characteristics of the optimized array beam patterns are investigated according to the number of array elements. Furthermore, the illustrative antenna, which is a mobile array antenna with a stair-planar configuration for satellite multimedia communication, is introduced to verify this optimizing technique.