Directional Coupler Design Using Coplanar Waveguide

摘要

Coplanar Waveguide (CPW) is a surface transmission line having properties that make it attractive for microwave integrated circuit applications. The CPW was investigated primarily to develop a design procedure for a directional coupler; however, it was necessary to first determine the effects of a finite substrate thickness on the effective dielectric constant. A Schwarz-Christoffel transformation was used to map the CPW boundaries into a rectangular region to simplify the analysis. (Modified author abstract)