CAD Modeling of High-Temperature Superconducting Films

The microwave technique needs the development of CAD for the microwave integrated circuits based on high-temperature superconducting films and intended to operate at the liquid nitrogen temperature. The model of bipolaron charge carrier transport was used to obtained the surface resistance as a function of temperature and frequency. The current distribution across the transmission line in quasi-static approximation has been used to calculate the resistance per unit length of the line. The set of model fitting parame ters provides a good agreement between calculation and experimental data.