Superconductor technology: apparatus – material – process – High temperature devices – systems – apparatus – com- ponents,... – High frequency waveguides – resonators – electrical networks,...
Patent
1995-06-06
1997-12-02
Saadat, Mahshid D.
Superconductor technology: apparatus, material, process
High temperature devices, systems, apparatus, com- ponents,...
High frequency waveguides, resonators, electrical networks,...
505220, 257662, 257275, 257277, 257516, 257532, 257533, 257536, 333 12, 333995, 361738, 361766, 327554, H01L 3900, H01B 1200, H01F 600, H01P 100
Patent
active
056935951
ABSTRACT:
A termination for a high-temperature superconductive thin-film microwave device formed on the obverse side of a substrate with the reverse side of the substrate having a ground plane. The termination can include a thin-film resistor being integral with an operative component, with the substrate being a preselected dielectric substrate. The resistor can have an epitaxially-formed layer of molybdenum metal of a first preselected thickness on the obverse side, and an epitaxially-formed layer of titanium metal of a second preselected thickness thereon. The termination includes a epitaxially-formed thin-film capacitor integral with the resistor. The capacitor can have a layer of titanium metal formed on a portion of the obverse side with a layer of gold metal formed thereon. The substrate can be lanthanum aluminate, and the high-temperature superconductive film can be a yttrium-barium-copper-oxide film. The ground plane can be made of a high-temperature superconductive film and annealed gold.
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patent: 5021867 (1991-06-01), Przybysz
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patent: 5455064 (1995-10-01), Chou et al.
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"HTS Filters and Delay Lines Suit EW Systems", by Joe Madden and Neal Fenzi, Microwaves & RF, May, 1994, pp. 79 and 84.
"High-T.sub.c Materials Expand Superconductive Circuit Applications", by A. Davidson, J. Talvacchio, M.G. Forrester and J.R. Gavaler, Microwaves & RF, Apr., 1994, pp. 140-146.
Meier Daniel L.
Talisa Salvador H.
Northrop Grumman Corporation
Saadat Mahshid D.
Sutcliff Walter G.
Tang Alice W.
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