NONLINEARITY OF SUPERCONDUCTING TRANSMISSION-LINE AND MICROSTRIP RESONATOR

The simplest model of nonlinear response of a superconducting thin fil m is used for modeling the nonlinear phenomena in a superconducting tr ansmission line and a microstrip resonator. The specified characterist ic power of the transmission line is suggested to use as a fitting par ameter for numerical description of the microstrip line nonlinearity a t microwaves. Quantitative agreement of simulated and experimental dat a has been obtained for the incident power dependent transmission coef ficient of a microstrip line section and a high quality microstrip res onator, Numerical results have also been obtained for the power of the third harmonic radiated from the nonlinear resonator.