Modeling Microwave Connectors Used as Signal Launchers for Microstrip Lines of Different Widths

Abstract

A full characterization and modeling methodology for the electrical transitions introduced by coaxial connectors serving as interfaces for accessing microstrip (MS) lines is presented and verified up to 40 GHz. The associated two-port network parameters are obtained from measurements performed on MS lines of different lengths. Subsequently, two circuit models for the transition are proposed and used to assess the performance of the connector transition as the lines vary in width.