Finite difference modeling of novel waveguiding structures for MMIC applications

Finite difference schemes have been utilized to model the field profiles of several novel waveguiding structures, which support a quasi‐TEM class of propagation. From the electric field values the impedance, equivalent capacitance and attenuation of the structures are calculated. This article describes modification to existing guiding structures such as a conventional coplanar waveguiding structure, by inserting longitudinal and transverse dielectric stratifications, and describes the use of finite difference scheme to obtain their characteristics.