Simple Computation of Effective Dielectric Constant for a CPW Configuration

Abstract

ABSTRACT This article presents the design of a simple-expression-based algorithm that may be used for the computation of the effective dielectric constant for a given coplanar waveguide (CPW) structure in microwave applications. The design is based on multidimensional surface fitting approach. The choice of this expression is justified using a computed/simulated dataset. A very simple intuitive method is developed for this purpose. Simple expressions are defined repetitively to compute the previous relevant parameters. The coefficients of the expressions are calculated based on their dependency over the physical attributes of the structure concerned.