Triangular discretisation for analysis of microstrip mitred bend, by an iterative method using the Fast Modal Transform

Abstract

In this paper, a study based on iterative method is presented. This method consists in generating a recursive relationship between a wave source and reflected waves from the discontinuity plane which is divided into cells. A high computational speed has been achieved by using Fast Modal Transform (FMT). This work is followed by an application of triangular discretization which offers several advantages over rectangular discretization. The right bend can be simulated by both rectangular and triangular cells, while the mitred bend can be exactly conformed only by the triangular mesh. Deficiencies in the rectangular approximation are identified. The computed results have been successfully compared with published data.