Josephson logic gate having a plurality of input ports and a Jos

Details Josephson logic gate having a plurality of input ports and a Jos Josephson logic gate having a plurality of input ports and a Jos

1992-03-24

1993-08-03

Hudspeth, David R.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307462, 307463, 307465, 307306, H03K 1792

Patent

active

052332446

ABSTRACT:
A multiple-input Josephson AND gate having a plurality of input ports comprises a plurality of Josephson logic gate elements of a number corresponding to the number of said input ports and cascaded with each other from a first stage to a final stage, each of the Josephson logic gate elements of said first through final stages including: a superconducting quantum interferometer for producing an output signal in response to a transition from a superconducting state to a finite voltage state, an input line connected to a corresponding input port and receiving therefrom an input current, the input line being coupled magnetically to the superconducting quantum interferometer and transferring the input current to said superconducting quantum interferometer; and a biasing part for supplying a bias current to the superconducting quantum interferometer at a level such that the superconducting quantum interferometer undergoes the transition to the finite voltage stage in response to the input current supplied to the input line, wherein each of the respective biasing parts of the second through final stages is supplied with the output signal of the superconducting quantum interferometer of the respective, next previous stage as a trigger signal and produces the bias current in response to the trigger signal.

REFERENCES:
patent: 3848259 (1974-11-01), Herrell
patent: 4012642 (1977-03-01), Gueret
patent: 4039856 (1977-08-01), Schlig
patent: 4097265 (1978-06-01), Zappe
patent: 4275314 (1981-06-01), Fulton
patent: 4413196 (1983-11-01), Josephs et al.
patent: 4413197 (1983-11-01), Josephs et al.
patent: 4713562 (1987-12-01), Hasuo et al.
patent: 5164618 (1992-11-01), Murphy et al.
Gheewala, "A 30-ps Josephson Current Injection Logic (CIL)", IEEE J.S.S.C., vol. SC-14, No. 5, Oct. 1979, pp. 787-793.
Harada et al., "The Promise of Josephson Devices for Very Fast Switching Speeds," Japan Journal of Electronic Engineering, vol. 21, No. 208, Apr. 1984, Tokyo, JP, pp. 32-38.
Patent Abstracts of Japan, vol. 9, No. 3 (E-298)(1766) Feb. 22, 1984 & JP-A-59 183530 (Nippon Denshin Denwa Kosha) Oct. 10, 1984.
Patent Abstracts of Japan, vol. 13, No. 561 (E-859)(3909) Dec. 13, 1989 & JP-A-1 233915 (Fujitsu Ltd) Sep. 19, 1989.
Patent Abstracts of Japan, vol. 15, No. 125 (E-1050) Mar. 27, 1991 & JP-A-3 011824 (Hitachi Ltd) Jan. 21, 1991.

Affiliated with

Also associated with

Rating

Josephson logic gate having a plurality of input ports and a Jos does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Josephson logic gate having a plurality of input ports and a Jos, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Josephson logic gate having a plurality of input ports and a Jos will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2273322