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.

Keywords:

• method of moments (MoM)
• physical optics (PO)
• best uniform approximation
• mutual interaction matrix

Additional information

Funding

The authors would like to thank the financial support from the National Natural Science Foundation of China [grant number 61201023], [grant number 61401327], [grant number 61201018], [grant number 61471278] and the Specialized Research Fund for the Doctoral Program of Higher Education [grant number 20130203120011], [grant number 20120203120011].