Helical Resonators Containing High T sub c Ceramic Superconductors.
01 January 1989
Resonators are the single most important ingredient in microwave and radio frequency circuits. We have produced some helical resonators using bulk Ba sub 2 YCu sub 3 O sub 7 high T sub c ceramic superconductor. These resonators, which operate at 77K and cover the frequency range from 0.1 to 2.0 GHz out perform their all copper counter parts by at least a factor of 5 in unloaded Q.