Title :
Multilayer semiconductor substrate in superconducting microstrip lines
Author :
Fernandes, Humberto César Chaves
Author_Institution :
Dept. of Electr. Eng., Univ. Fed. do Rio Grande do Norte, Natal, Brazil
Abstract :
The theory of the multilayer shielded and open microstrip lines considering the superconductor strip on semiconductor regions is presented. The Transverse Transmission Line (TTL) method is used in the analysis. The superconductor effect is included with the boundary condition of the surface impedance, that is related to the complex conductivity of the material, calculated from the advanced two-fluid model. Applying the moment method the complex propagation constant of the structure, including the phase constant and the attenuation constant, is obtained. Results in 2D and 3D are presented for the complex propagation constant, versus the frequency and the temperature, of this multilayer superconducting microstrip lines
Keywords :
high-temperature superconductors; method of moments; microstrip lines; substrates; superconducting microwave devices; superconducting thin films; transmission line theory; TTL method; advanced two-fluid model; attenuation constant; boundary condition; complex conductivity; complex propagation constant; moment method; multilayer semiconductor substrate; open microstrip lines; phase constant; shielded microstrip lines; superconducting microstrip lines; surface impedance; transverse transmission line method; Boundary conditions; Microstrip; Nonhomogeneous media; Propagation constant; Strips; Substrates; Superconducting materials; Superconducting transmission lines; Surface impedance; Transmission line theory;
Conference_Titel :
Microwave and Optoelectronics Conference, 1997. Linking to the Next Century. Proceedings., 1997 SBMO/IEEE MTT-S International
Conference_Location :
Natal
Print_ISBN :
0-7803-4165-1
DOI :
10.1109/SBMOMO.1997.646843
