Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent
1986-04-18
1989-06-06
Tarcza, Thomas H.
Electrical transmission or interconnection systems
Nonlinear reactor systems
Parametrons
307306, H03K 1792, H01L 3922
Patent
active
048376043
ABSTRACT:
A circuit element for a superconducting integrated circuit is disclosed which comprises a plurality of Josephson junctions stacked vertically atop one another. Such a circuit element is capable of replacing single junctions and lateral arrays of junctions in many analog and digital applications. When operated digitally, the close proximity of the junctions to one another creates a "tight coupling" effect which permits the entire stack to switch as a single junction. Input (control) currents and output (bias) currents can be injected or taken out at any level or levels in the stack, thereby permitting excellent isolation, voltage gain, and the use of a single stack as a combination logic element. The use of tight coupling is extendable to lateral arrays as well. A method by which a circuit including vertical tunnel junctions may be fabricated is also disclosed.
REFERENCES:
patent: 3643237 (1972-02-01), Anacker
patent: 3906538 (1975-09-01), Matisoo
patent: 4051393 (1977-09-01), Fulton
patent: 4117503 (1978-09-01), Zappe
patent: 4157555 (1979-06-01), Gray
patent: 4334158 (1982-06-01), Faris
patent: 4589001 (1986-05-01), Sakai et al.
patent: 4638257 (1987-01-01), McDonald
Faris, "VLSI Superconducting Technologies", Chapter 9 of Hardware and Software Concepts in VLSI, at 177-238 (1983).
Faris et al., "Basic Design of a Josephson Technology Cache Memory", IBM J. of Res. & Development, vol. 24 (1980), pp. 143-154.
Gueret et al., "Investigations for a Josephson Computer Main Memory with Single-Flux-Quantum Cells", IBM J. of Res. & Development, vol. 24 (1980), pp. 155-166.
Zappe and Landman, "Analysis of Resonance Phenomena in Josephson Interferometer Devices", J. Appl. Phys., vol. 49, pp. 344-350 (1978).
Harris, "Turn-on Delay of Josephson Interferometer Logic Devices", IEEE Trans. on Magnetics, vol. MAG-15, pp. 562-565 (1979).
Zappe, "Dynamic Behavior of Josephson Tunnel Junctions in the Subanosecond Range", J. Appl. Phys., vol. 44, pp. 865-874.
Arnett and Herrell, "Regulated AC Power for Josephson Interferometer Latching Logic Circuits", IEEE Trans. on Magnetics, vol. MAG-15, pp. 554-557 (1979).
Faris, "Quiteron", Physica, vol. 126B, pp. 165-175 (1984).
Tucker, "Predicted Conversion Gain in Superconductor-Insulator-Superconductor Quasiparticle Mixers", Appl. Phys. Lett., vol. 36, pp. 477-479 (1980).
Kerr et al., "Infinite Available Gain in a 115 GHz SIS Mixer", Physica, vol. 108B, pp. 1369-1370.
Rudner et al., "The Antenna-Complex SIS Quasiparticle Array Mixer", IEEE Trans. on Magnetics, vol. MAG-17, pp. 690-693 (1981).
Zappe, "Josephson Computer Technology", Published in Deaver, Advances in Superconductivity (Plenum 1983), pp. 51 et. seq.
Jillie, "All-Refractory Josephson Logic Circuits", IEEE J. of Solid State Circuits, vol. SC-18, pp. 173-180 (1983).
Huggins, "Preparation and Characteristics of Nb/Al-oxide-Nb Tunnel Junctions".
Gurvitch, "Quality Refractory Josephson Tunnel Junctions Utilizing Thin Aluminum Layers", Appl. Phys. Lett., vol. 42, pp. 472-474 (1983).
Barron Jr. Gilberto
Hypres, Inc.
Tarcza Thomas H.
LandOfFree
Femtosecond three-terminal switch and vertical tunnel junction does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Femtosecond three-terminal switch and vertical tunnel junction, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Femtosecond three-terminal switch and vertical tunnel junction will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-43125