Analysis of Conformal Quasi-Periodic Array Based on Sub-entire Domain Method

In recent years, conformal array has been studied comprehensively owing to a few distinct advantages. However, the Floquet’s theorem and periodic Green’s Function method cannot be used for spherical arrays because the array is not periodic in an absolute sense. To develop a quasi-periodic analysis method with improved efficiency for conformal arrays on spherical surface, a sub-entire domain (SED) method is developed to calculate the far-field characteristics. A conformal bowtie array is analyzed by the proposed method as an example, and the obtained results are compared with those by full-wave method of moments (MoM). The proposed SED method has improved the efficiency greatly while keeps a reasonable accuracy.