Title :
Current distribution in superconducting strip transmission lines
Author :
Sheen, D.M. ; Ali, S.M. ; Oates, D.E. ; Withers, R.S. ; Kong, J.A.
Author_Institution :
MIT, Cambridge, MA, USA
Abstract :
A method for the calculation of the current distribution, resistance, and inductance for superconducting strip transmission lines is presented. These calculations allow accurate characterization of both high-T/sub c/ and low-T/sub c/ superconducting strip transmission lines. For a stripline geometry the current distribution, resistance, and inductance are calculated as a function of the penetration depth for various film thicknesses. These calculations are then used to determine the penetration depth for YBa/sub 2/Cu/sub 3/O/sub 7-x/ superconducting thin film from the measured temperature dependence of the resonant frequency of a stripline resonator. The power dependence of the YBa/sub 2/Cu/sub 3/O/sub 7-x/ surface resistance is plotted against the RF magnetic field, which is determined from the calculated current distribution.<>
Keywords :
barium compounds; current distribution; high-temperature superconductors; strip lines; superconducting junction devices; superconducting thin films; yttrium compounds; RF magnetic field; YBa/sub 2/Cu/sub 3/O/sub 7-x/; current distribution; high-temperature superconductors; inductance; penetration depth; resistance; resonant frequency; stripline geometry; superconducting strip transmission lines; surface resistance; temperature dependence; Current distribution; Geometry; Inductance; Magnetic field measurement; Power transmission lines; Stripline; Strips; Superconducting films; Superconducting transmission lines; Surface resistance;
Conference_Titel :
Microwave Symposium Digest, 1991., IEEE MTT-S International
Conference_Location :
Boston, MA, USA
Print_ISBN :
0-87942-591-1
DOI :
10.1109/MWSYM.1991.146952
