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 »
- Inventors:
-
- Albuquerque, NM
- 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
- 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. Fri .
"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 = {Fri Jan 01 00:00:00 EST 1993},
month = {Fri Jan 01 00:00:00 EST 1993}
}
Works referenced in this record:
A superconducting single film device oscillator made of high Tc and low Tc materials
conference, January 1989
- Martens, J. S.; Beyer, J. B.; Nordman, J. E.
- IEEE MTT-S International Microwave Symposium Digest
Magnetic Coupling Between Two Adjacent Type-II Superconductors
journal, November 1965
- Giaever, Ivar
- Physical Review Letters, Vol. 15, Issue 21
Single superconducting thin film devices for applications in high T/sub c/ materials circuits
journal, March 1989
- Hohenwarter, G. K. G.; Martens, J. S.; McGinnis, D. P.
- IEEE Transactions on Magnetics, Vol. 25, Issue 2
Optimization of circuit parameters for the vortex flow transistor
journal, March 1987
- McGinnis, D.; Nordman, J.; Beyer, J.
- IEEE Transactions on Magnetics, Vol. 23, Issue 2
Microwave Wide-Band Model of GaAs Dual Gate MESFET's
journal, January 1982
- Tsironis, C.; Meierer, R.
- IEEE Transactions on Microwave Theory and Techniques, Vol. 30, Issue 3
S parameter measurements on single superconducting thin‐film three‐terminal devices made of high‐ T c and low‐ T c materials
journal, May 1989
- Martens, J. S.; Hohenwarter, G. K. G.; Beyer, J. B.
- Journal of Applied Physics, Vol. 65, Issue 10
Fluxon propagation on a parallel array of microbridge‐type Josephson junctions
journal, March 1988
- Hontsu, Shigeki; Ishii, Junya
- Journal of Applied Physics, Vol. 63, Issue 6