A general analysis of propagation along multiple-layer superconducting stripline and microstrip transmission linesA rigorous spectral-domain formulation for a superconducting stripline or microstrip transmission line with a multiple-layer dielectric substrate is presented. The formulation models the strip conductor as a surface current with an equivalent surface impedance, where the surface impedance is approximated in closed form when the strip is either much thinner or much thicker than a penetration depth. In either case the surface impedance is related to the complex conductivity of the material, which is calculated from a two-fluid model. Results are presented to show the slow-wave propagation and attenuation along both microstrip and stripline packages in a realistic multiple-layer configuration, which accounts for the field penetration into the superconducting ground planes.
Document ID
19920071653
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Nghiem, David (NASA Lyndon B. Johnson Space Center Houston, TX, United States)
Williams, Jeffrey T. (NASA Lyndon B. Johnson Space Center Houston, TX, United States)
Jackson, David R. (Houston, University TX, United States)