Superconductor technology: apparatus – material – process – High temperature – per se – Having tc greater than or equal to 150 k
Patent
1991-01-24
1993-01-12
LaRoche, Eugene R.
Superconductor technology: apparatus, material, process
High temperature , per se
Having tc greater than or equal to 150 k
505700, 505866, 333 99S, 333202, 3332191, H01P 710, H01P 1201, H01B 1206
Patent
active
051790742
ABSTRACT:
A waveguide cavity filter having a conductive housing, a plurality of high dielectric constant ceramic resonators disposed within the conductive housing and at least a portion of a sheet of superconductive material which is constrained to be at an ambient temperature below the critical temperature of the superconductor and disposed in contact with at least one of the side walls of the conductive housing and with an opposing surface of each of the resonators, such that the resonators are in close superconductive contact with the side walls of the conductive housing. In particularly, the superconductive sheet is a layer of high temperature superconductor. In a first embodiment of the invention, the resonators in the shape of cylindrical plugs are disposed with a flat surface juxtaposed to the side wall. In a second embodiment, the resonators are in the form of half cylindrical plugs with the axis of the half cylinder transverse to the axis of the resonator, in contact with the superconductor sheet and in juxtaposition to the side wall. In a further embodiment of the invention, the resonators are quarter circular cylindrical plugs and each of the flat side surfaces is in contact with a juxtaposed side wall of the conductive housing through a sheet of superconductive material.
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Braginski et al. "Prospects for Thin-film Electronic Devices Using High-T.sub.c Superconductors", 5th International Workshop on Future Electron Devices, Jun. 2-4, 1988, Miyagi-Zao, pp. 171-179.
Zahopolis et al., "Performance of a Fully Superconductive Microwave Cavity Made of the High T.sub.c Superconductor Y.sub.1 Ba.sub.2 Cu.sub.3 O.sub.y ", Applied Physics Letters, vol. 52(25), Jun. 20, 1988, pp. 2168-2170.
Fiedziuszko Slawomir J.
Holme Stephen C.
LaRoche Eugene R.
Lee Benny T.
Space Systems Loral, Inc.
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