Design and simulation of a fast Josephson junction on-chip gated clock for frequency and time analysis

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

OSTI ID:6088491

Ruby, R C ^[1]

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1. Hewlett-Packard Co., Palo Alto, CA (United States)

This paper reports that as the sophistication and speed of digital communication systems increase, there is a corresponding demand for more sophisticated and faster measurement instruments. One such instrument new on the market is the HP 5371A Frequency and Time Interval Analyzer (FTIA). Such an instrument is analogous to a conventional oscilloscope. Whereas the oscilloscope measures waveform amplitudes as a function of time, the FTIA measures phase, frequency, or timing events as functions of time. These applications are useful in such diverse areas as spread-spectrum radar, chirp filter designs, disk-head evaluation, and timing jitter analysis. The on-chip clock designed for this application uses a single Josephson Junction as the clock and a resonator circuit to fix the frequency. A zero-crossing detector is used to start and stop the clock. A SFQ counter is used to count the pulses generated by the clock and a reset circuit is used to reset the clock. Extensive simulations and modeling have been done based on measured values obtained from our Nb/Al{sub 2}O{sub 3}/Al/Nb process.

• OSTI ID: 6088491
• 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

665411 -- Basic Superconductivity Studies-- (1992-)
665412* -- Superconducting Devices-- (1992-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
99 GENERAL AND MISCELLANEOUS
990200 -- Mathematics & Computers
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CHALCOGENIDES
COMPUTERIZED SIMULATION
DESIGN
DIGITAL SYSTEMS
ELECTRONIC EQUIPMENT
ELEMENTS
EQUIPMENT
FILTERS
FREQUENCY DEPENDENCE
FUNCTION GENERATORS
JOSEPHSON JUNCTIONS
JUNCTIONS
MEASURING INSTRUMENTS
METALS
NIOBIUM
OXIDES
OXYGEN COMPOUNDS
PULSE GENERATORS
RADAR
RANGE FINDERS
SIMULATION
SUPERCONDUCTING JUNCTIONS
TIME DEPENDENCE
TIME INTERVAL ANALYZERS
TRANSITION ELEMENTS