Electronic analogs of double-junction and single-junction SQUIDs

Journal Article · Mon Jun 01 00:00:00 EDT 1981 · Rev. Sci. Instrum.; (United States)

DOI:https://doi.org/10.1063/1.1136689· OSTI ID:6393857

Henry, R W; Prober, D E

We describe electronic analogs of a double-junction (dc) SQUID and a single-junction (rf) SQUID that are simple to construct and operate, and are considerably more flexible than those previously reported. The Josephson junction analog is based on the Resistively-Shunted Junction (RSJ) model, and uses a novel method based on a sample-and-hold circuit to generate the sin theta ''supercurrent.'' Examples are shown of the single-junction I--V characteristics, threshold curves of critical current vs applied flux and I--V curves for the double-junction SQUID analog, and rf SQUID characteristics as a function of applied flux and rf drive current. Other applications of the analogs, including the incorporation of a nonsinusoidal current-phase relation, are discussed.

• Research Organization: Becton Center, Department of Engineering and Applied Science, Yale University, New Haven, Connecticut 06520, and Department of Physics, Bucknell University, Lewisburg, Pennsylvania 17837
• OSTI ID: 6393857
• Journal Information: Rev. Sci. Instrum.; (United States), Vol. 52:6
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
SQUID DEVICES
ANALOG SYSTEMS
ELECTRONIC CIRCUITS
DIGITAL CIRCUITS
ELECTRIC CURRENTS
ELECTRIC POTENTIAL
JOSEPHSON JUNCTIONS
JUNCTIONS
MAGNETIC FLUX
MATHEMATICAL MODELS
PHASE SHIFT
RESISTORS
SAMPLING
CURRENTS
ELECTRICAL EQUIPMENT
ELECTRONIC EQUIPMENT
EQUIPMENT
FLUXMETERS
MEASURING INSTRUMENTS
MICROWAVE EQUIPMENT
SUPERCONDUCTING DEVICES
SUPERCONDUCTING JUNCTIONS
420201* - Engineering- Cryogenic Equipment & Devices