Analysis and design of slow-wave structures using an integral equation approach

An integral equation formulation which yields dispersion characteristics for planar transmission lines on layered, lossy substrates is presented. Galerkin´s procedure in the space domain is used, and the roots of the resulting characteristic equation provide the desired phase and attenuation constants. This method has been proved to be very accurate and efficient for studying lines on insulator-semiconductor substrates. It results in design equations which can be simply programmed on a personal computer. Numerical results are compared to those found in the literature for the MIS slow-wave structure.<>