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Accession Number ADA566120
Title Development of RF Sensor Based on Two-cell SQUID.
Publication Date Jul 2012
Media Count 21p
Personal Author A. Ustinov F. Song M. He
Abstract The RF directional sensor based on phase-sensitive detection using two sorts of Josephson parametric amplifiers has been analyzed and investigated experimentally. To construct the Josephson parametric amplifier, we use a SQUID (either single-cell SQUID or two-cell SQUID) embedded in a superconducting coplanar waveguide. We operated the circuit at a frequency of several GHz and measured the amplitude response of the SQUID-based Josephson parametric amplifier. Nonlinearity and flux tunability in the reported experiments was limited by relatively large critical current density and therefore small nonlinear inductance of the SQUID. The demonstrated phase sensitivity was 1.2 dB / rad. It appears feasible to improve the sensitivity of developed RF sensor by reducing the critical current of the Josephson junctions.
Keywords Circuits
Foreign reports
Josephson junctions
Parametric amplifiers
Squid(Superconducting quantum interference device)

Source Agency Non Paid ADAS
NTIS Subject Category 46 - Physics
62 - Computers, Control & Information Theory
49 - Electrotechnology
Corporate Author European Office of Aerospace Research and Development, FPO New York 09510.
Document Type Technical report
Title Note Final rept. 15 Jan 2010-14 Jan 2012.
NTIS Issue Number 1306
Contract Number FA8655-10-1-3049 EOARD 10-3049

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