Capacitance of coplanar waveguides in multilayer dielectric substrates

Abstract

This letter examines the capacitance of coplanar waveguides (CPWs) in multilayer dielectric substrates.An electrostatic boundary-value problem of CPWs in multilayer dielectric substrates is solved based on the Fourier transform, mode matching technique, and superposition considering the conductor thickness. A series representation for the capacitance is presented. The capacitance is calculated in terms of the CPW geometry to illustrate its behaviors. (C) 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:18861889, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26938