Characteristics of Coplanar Waveguide Loaded Inset Dielectric Guide

The coplanar waveguide loaded inset dielectric guide is described in comparison with conventional coplanar waveguide, and analyzed using an integral equation method. This structure has several interesting features useful for microwave and millimeter wave applications. Numerical results are presented to illustrate the effects of various structural and material parameters on propagation constant and characteristic impedance. By suitable choice of these parameters, a wide single-mode bandwidth and a wide range of characteristic impedance can be achieved. Comparison between computed and measured data shows good agreement.