Superconductor technology: apparatus – material – process – High temperature devices – systems – apparatus – com- ponents,... – High frequency waveguides – resonators – electrical networks,...
Patent
1995-12-12
1997-10-21
Lee, Benny T.
Superconductor technology: apparatus, material, process
High temperature devices, systems, apparatus, com- ponents,...
High frequency waveguides, resonators, electrical networks,...
505700, 505701, 505866, 333 99S, 333161, H01P 900, H01B 1202
Patent
active
056796242
ABSTRACT:
A number of MMIC ferroelectric variable time delay devices are presented. Each embodiment has a microstrip configuration deposited on a ferroelectric film which is deposited on a high Tc superconductor substrate connected to the ground. A bias electric field changes the permittivity of the ferroelectric material. As a result, a variable time delay is obtained.
REFERENCES:
patent: 4614922 (1986-09-01), Baumann et al.
patent: 5409889 (1995-04-01), Das
patent: 5472935 (1995-12-01), Yandrofski et al.
Jackson, C.M., et al; "Novel Monolithic Phase Shifter Combining Ferroelectrics and High Temperature Superconductors"; Microwave and Optical Technology Letters; vol. 5, No. 14, 20 Dec. 1992 pp. 722-726.
Lyons W.G. and Withers R.S.; "Passive Microwave Device Application of High Tc Superconducting Thin Films"; Microwave Journal; Nov. 1990; pp. 85, 86, 90, 92, 96, 98, 100, 102.
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