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Abstract
A novel approach for scattering analysis of the large array antennas is introduced, which is based on the synthetic basis functions (SBFS). Based on the solution of the electromagnetic problems, the method accomplishes regional partition of the geometrical and physical structure of the model and brings in an equivalent current source to take the coupling between elements into consideration, thus obtains the space of the SBFS. Compared with the conventional partition of the matrix, the method proposed in this paper can further release the heavy burden on the CPU in terms of memory and time. The accuracy and efficiency of the SBFS are demonstrated in a variety of scattering problems compared with the traditional MoM. So this method can be used to effectively analyze the scattering problem of the large array antennas.