Analysis and Two-Dimensional Modeling of Directional Coupler Based on Two Coplanar Lines

Abstract This paper is devoted to the physical modeling and numerical characterization of one and two micro-coplanar lines (directional coupler) deposited on a dielectric substrate. Using the formalism of the method of Green’s functions, the integral equation method and the method of moments. The study and the analysis in this work is divided into two steps, the first is devoted to the analysis and modeling of the different characteristics of the micro-coplanar line in the quasi-TEM approximation using the integral equation method using the Green function technique. And the second step includes the analysis and modeling of a directional coupler based on two micro-coplanar lines using the general theory of coupled lines.