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Transmission line biased coherent array of Josephson oscillators

Patent ·
OSTI ID:6186881
; ;
A coherent array of Josephson oscillators is provided. Individual hysteresis-free Josephson junctions are longitudinally arranged in a gap of a central conductor in a line and have such a spacing as to substantially eliminate quasiparticle interactions. To provide a common frequency of operation, equal and opposite dc voltages are produced in adjacent pairs of the Josephson junctions by an arrangement of interlocking dc SQUID's (Superconductive Quantum Interference Device) connected to the longitudinal central conductor using microwave bias tees. Phase coherence for the array is provided by a rf current circulating in an inductive feedback path that loops between the ends of the array.
Assignee:
Secretary of the Navy
Patent Number(s):
US 4468635
OSTI ID:
6186881
Country of Publication:
United States
Language:
English

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Related Subjects

420201* -- Engineering-- Cryogenic Equipment & Devices
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
CURRENTS
DESIGN
DIRECT CURRENT
ELECTRIC CURRENTS
ELECTRIC POTENTIAL
ELECTRONIC EQUIPMENT
EQUIPMENT
FEEDBACK
FLUXMETERS
INDUCTION
INTERACTIONS
JOSEPHSON JUNCTIONS
JUNCTIONS
MEASURING INSTRUMENTS
MICROWAVE EQUIPMENT
OSCILLATORS
PARTICLE INTERACTIONS
POWER TRANSMISSION LINES
RF SYSTEMS
SQUID DEVICES
SUPERCONDUCTING DEVICES
SUPERCONDUCTING JUNCTIONS