A modified construction method of synthetic basis functions for phased antenna array

This paper introduces a modified construction method of synthetic basis functions (SBFs) for analyzing the radiation problems of phased antenna arrays. The effect of the feeding sources and the responses of incident electromagnetic fields are two relatively independent solution spaces. Singular value decomposition (SVD) method is used to extract the characteristic modes to the array from the two solution spaces separately. Numerical examples are given to validate the proposed method by comparing the efficiency and accuracy with existing techniques.