Author(s)

M. Dionigi, L. Tarricone & R. Sorrentino

Abstract

The time and accuracy performances of a 3D rectangular waveguide Mode- Matching (MM) simulator are strictly dependent on the appropriate selection of the basis functions used for the modal expansion of the fields. The number of selected modes determines the size of a linear system of equations whose solution is the computational core of the MM analysis. Moreover, the use of modes not suitable to the studied structures increases the risk of numerical instability. We present a new method, based on graph theory, to detect automatically the minimum number of modes guaranteeing a fixed spatial resolution for whatever considered structure. The method is general, and does not require any considerations on the geometric properties of the structure. Results prove that a substantial spee

Keywords