Thick film YBCO microstrip resonators

It is concluded from preliminary experiments that thick-film YBCO resonant circuits have superior characteristics to identical copper circuits operated at 77 K up to at least 12 GHz, and therefore appear to have useful potential for microwave applications. Further, the simplicity of the stripline resonator technique presents possibilities for use in material characterization. The method complements the microwave cavity perturbation technique in that the high-temperature superconducting (HTS) surface which is sampled is primarily the one in contact with the substrate.