Influence of p-Refinement on Accuracy of Mode Tracking Based on Correlation of Characteristic Currents

Characteristic mode analysis (CMA) is a useful tool that enables a deep insight into the physical behavior of the analyzed structure. In majority of cases of practical interest wide-band CMA is required. Mode tracking is then very important, but also very challenging task. In this paper we are focused on mode tracking based on correlation of the modal currents over frequency, and possibility to improve the tracking by increasing accuracy of MoM matrix calculation by using p-refinement method. Results obtained from mode tracking based on correlation of characteristic fields are used as a reference. It is shown that p-refinement can bring some limited improvement of mode tracking, but the main problems related to mode tracking based on correlating the modal currents still remain.