Electrical Behavior of a 31 cm, Thin Film YBaCuO Superconducting Microstrip

Simple analyses of high transition temperature (high-T sub c) superconducting microstrip transmission lines predict a nearly vanishing intrinsic dispersion and very low signal attenuation at temperatures T T sub c, T sub c the transition temperature and at signal frequencies omega omega sub g, omega sub g the gap frequency (several THz for the new high-T sub c superconductors). The implication is that at 77K such superconducting microstrip interconnections may be superior to normal metal interconnections for some critical system interconnection applications [1,2,3]. However, there remain many practical effects which may degrade the performance of actual high- T sub c interconnections, compared to the simple two-fluid model predictions.