Fast wideband analysis of antennas around large platforms using hybrid numerical modeling technique

Abstract

The efficient iterative method of moments and physical optics (EI-MoM-PO) hybrid formulation combined with the best uniform approximation is proposed to analyze the antenna array around the electrically large platform in this paper. In the conventional MoM-PO method, the computation of the mutual interaction matrix between the MoM and PO region is very time consuming. To facilitate the analysis of electrically large problems, the EI-MoM-PO method provides a possible way to avoid the calculation of the PO contribution in matrix form. On the other hand, the best uniform approximation is utilized to obtain the frequency response of antennas quickly and easy to be applied in EI-MoM-PO method. Finally, the frequency response of the bowtie antenna array around the electrically large platform is analyzed by the presented algorithm and the conventional one. Numerical results demonstrate the capability of the proposed technique.