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Title: Dual control active superconductive devices

Abstract

A superconducting active device has dual control inputs and is constructed such that the output of the device is effectively a linear mix of the two input signals. The device is formed of a film of superconducting material on a substrate and has two main conduction channels, each of which includes a weak link region. A first control line extends adjacent to the weak link region in the first channel and a second control line extends adjacent to the weak link region in the second channel. The current flowing from the first channel flows through an internal control line which is also adjacent to the weak link region of the second channel. The weak link regions comprise small links of superconductor, separated by voids, through which the current flows in each channel. Current passed through the control lines causes magnetic flux vortices which propagate across the weak link regions and control the resistance of these regions. The output of the device taken across the input to the main channels and the output of the second main channel and the internal control line will constitute essentially a linear mix of the two input signals imposed on the two control lines. Themore » device is especially suited to microwave applications since it has very low input capacitance, and is well suited to being formed of high temperature superconducting materials since all of the structures may be formed coplanar with one another on a substrate.« less

Inventors:
 [1];  [2];  [2];  [2]
  1. Albuquerque, NM
  2. Madison, WI
Issue Date:
Research Org.:
Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA (United States)
OSTI Identifier:
868868
Patent Number(s):
5229655
Application Number:
US patent applicaiton 07/816,395
Assignee:
Wisconsin Alumni Research Foundation (Madison, WI)
Patent Classifications (CPCs):
H - ELECTRICITY H03 - BASIC ELECTRONIC CIRCUITRY H03K - PULSE TECHNIQUE
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01L - SEMICONDUCTOR DEVICES
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
dual; control; active; superconductive; devices; superconducting; device; inputs; constructed; output; effectively; linear; mix; input; signals; formed; film; material; substrate; main; conduction; channels; weak; link; region; line; extends; adjacent; channel; current; flowing; flows; internal; regions; comprise; links; superconductor; separated; voids; passed; lines; causes; magnetic; flux; vortices; propagate; resistance; constitute; essentially; imposed; especially; suited; microwave; applications; capacitance; temperature; materials; structures; coplanar; especially suited; control line; conducting material; input signals; magnetic flux; input signal; current flow; superconducting material; current flowing; temperature superconducting; superconducting materials; link region; current flows; main channel; weak link; superconducting active; microwave applications; control inputs; main conduction; current passed; conduction channel; active device; regions comprise; dual control; control input; linear mix; current pass; /327/257/

Citation Formats

Martens, Jon S, Beyer, James B, Nordman, James E, and Hohenwarter, Gert K. G. Dual control active superconductive devices. United States: N. p., 1993. Web.
Martens, Jon S, Beyer, James B, Nordman, James E, & Hohenwarter, Gert K. G. Dual control active superconductive devices. United States.
Martens, Jon S, Beyer, James B, Nordman, James E, and Hohenwarter, Gert K. G. Tue . "Dual control active superconductive devices". United States. https://www.osti.gov/servlets/purl/868868.
@article{osti_868868,
title = {Dual control active superconductive devices},
author = {Martens, Jon S and Beyer, James B and Nordman, James E and Hohenwarter, Gert K. G.},
abstractNote = {A superconducting active device has dual control inputs and is constructed such that the output of the device is effectively a linear mix of the two input signals. The device is formed of a film of superconducting material on a substrate and has two main conduction channels, each of which includes a weak link region. A first control line extends adjacent to the weak link region in the first channel and a second control line extends adjacent to the weak link region in the second channel. The current flowing from the first channel flows through an internal control line which is also adjacent to the weak link region of the second channel. The weak link regions comprise small links of superconductor, separated by voids, through which the current flows in each channel. Current passed through the control lines causes magnetic flux vortices which propagate across the weak link regions and control the resistance of these regions. The output of the device taken across the input to the main channels and the output of the second main channel and the internal control line will constitute essentially a linear mix of the two input signals imposed on the two control lines. The device is especially suited to microwave applications since it has very low input capacitance, and is well suited to being formed of high temperature superconducting materials since all of the structures may be formed coplanar with one another on a substrate.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1993},
month = {7}
}

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