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

Conference · Mon Jan 01 00:00:00 EST 1990

OSTI ID:6544477

Martens, J S; Ginley, 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 (USA)
2. Wisconsin Univ., Madison, WI (USA). Dept. of Electrical and Computer Engineering
3. Hypress, Inc., Elmsford, NY (USA) Wisconsin Univ., Madison, WI (USA). Dept. of Electrical and Computer Engineering

We have used 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. 13 refs., 5 figs.

• Research Organization: Sandia National Labs., Albuquerque, NM (USA)
• Sponsoring Organization: USDOD; DOE/DP
• DOE Contract Number: AC04-76DP00789
• OSTI ID: 6544477
• Report Number(s): SAND-90-2244C; CONF-900944-1; ON: DE90017542
• Resource Relation: Conference: Applied superconductivity conference, Aspen, CO (USA), 24-28 Sep 1990
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
JOSEPHSON JUNCTIONS
ELECTRIC IMPEDANCE
BARIUM COMPOUNDS
CALCIUM COMPOUNDS
COPPER OXIDES
FIELD EFFECT TRANSISTORS
HIGH-TC SUPERCONDUCTORS
OXIDES
SUPERCONDUCTIVITY
SWITCHES
THALLIUM COMPOUNDS
ALKALINE EARTH METAL COMPOUNDS
CHALCOGENIDES
COPPER COMPOUNDS
ELECTRIC CONDUCTIVITY
ELECTRICAL EQUIPMENT
ELECTRICAL PROPERTIES
EQUIPMENT
IMPEDANCE
JUNCTIONS
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
SEMICONDUCTOR DEVICES
SUPERCONDUCTING JUNCTIONS
SUPERCONDUCTORS
TRANSISTORS
TRANSITION ELEMENT COMPOUNDS
426001* - Engineering- Superconducting Devices & Circuits- (1990-)