A Josephson junction to FET high speed line driver made of TlCaBaCuO

Conference · Thu Feb 28 23:00:00 EST 1991 · IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers); (United States)

OSTI ID:5923675

Martens, J S; Dinley, D S ^[1]; Beyer, J B; Nordman, J E ^[2]; Hohenwarter, G K.G. ^[3]

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1. Sandia National Labs., Albuquerque, NM (United States)
2. Wisconsin Univ., Madison, WI (United States). Dept. of Electrical and Computer Engineering
3. Hypres, Inc., Elmsford, NY (United States)

This paper reports on the use of a Tl-Ca-Ba- Cu-O superconducting flux flow transistor (SFFT) as an active impedance converter between Josephson and FET circuitry. The input of the flux flow device is a control line of low impedance that can be driven by a tunnel junction. The output is the signal across the SFFT which is made of a parallel array of weak links. The output impedance is typically greater than 5 {Omega} with a maximum voltage swing of over 100 mV into a 50 {Omega} system. The switching of an all-Nb junction induced a 90 mV voltage swing at the FET input and over 200 mV at the FET output. The line driver can operate anywhere between 4.2K and 85K with minor changes in speed ({plus minus}5 ps) and output level ({plus minus}10 mV). The switching time measured was about 100 ps and was fixture limited.

• OSTI ID: 5923675
• Report Number(s): CONF-900944--
• Journal Information: IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers); (United States), Journal Name: IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers); (United States) Vol. 27:2; ISSN IEMGA; ISSN 0018-9464
• Country of Publication: United States
• Language: English

Related Subjects

665412* -- Superconducting Devices-- (1992-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CALCIUM COMPOUNDS
CALCIUM OXIDES
CHALCOGENIDES
CONTROL SYSTEMS
COPPER COMPOUNDS
COPPER OXIDES
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTRONIC CIRCUITS
ELEMENTS
FIELD EFFECT TRANSISTORS
FREQUENCY CONVERTERS
JOSEPHSON JUNCTIONS
JUNCTIONS
MAGNETIC FLUX
MATHEMATICAL MODELS
METALS
NIOBIUM
NUCLEAR MODELS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
SEMICONDUCTOR DEVICES
SUPERCONDUCTING JUNCTIONS
SUPERCONDUCTIVITY
SWITCHING CIRCUITS
THALLIUM COMPOUNDS
TRANSISTORS
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
VOLTAGE REGULATORS
WEAK-COUPLING MODEL