|
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
Detectors
Foreign reports
Germany
Josephson junctions
Parametric amplifiers
Physics
Radiofrequency
Sensitivity
Squid(Superconducting quantum interference device)
Superconductors
Waveguides
|
|
|
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
|
