Antenna phase center measurement method based on multi-objective programming

An antenna phase center measurement method based on multi-objective programming is proposed. By obtaining multiple planes in the main lobe, the calculation of antenna phase center is changed into the optimal value of multi-objective programming. Then linear weighted sum method is used to solve the problem. It can change the multi-objective programming into single-objective optimization. Finally, the antenna phase center is solved by using differential evolution algorithm. In order to validate the proposed method, a circularly polarized antenna is calculated and measured. The measured results show that the obtained antenna phase center stability using the proposed method is less than 1 mm.