Current distribution in superconducting strip transmission lines

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.<
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