Applying the theory of characteristic modes and the method of moments to the analysis of a crossed wire scatterer

Annotation: A detailed understanding of the physical phenomena involved in an antenna or scattering structure is key to designing new structures or optimising the parameters of an existing structure. The theory of characteristic modes in combination with the method of moments with step basis functions is a powerful tool for this purpose. Therefore, in this paper a comprehensive analysis of the scattering properties of wire structures using the theory of characteristic modes using a crossed wire structure as an example is presented. An algorithm using characteristic mode theory combined with the method of moments, the algorithm for mode tracking in the frequency range using correlation coefficient, and a code based on it have been developed as efficient computational tools for researchers. The coincidence of results from these algorithms, numerical simulation with the method of moments and the ones from previous studies, confirms the correctness of the developed algorithms and code.

Keywords: eigenvalue, eigenvector, wire scatterer, method of moments, theory of characteristic modes