Title :
Precision AC–DC Transfer Measurements With a Josephson Waveform Synthesizer and a Buffer Amplifier
Author :
Séron, Olivier ; Djordjevic, Sophie ; Budovsky, Ilya ; Hagen, Thomas ; Behr, Ralf ; Palafox, Luis
Author_Institution :
Lab. Nat. de Metrol. et d´´Essais (LNE), Trappes, France
Abstract :
Measurements of the ac-dc difference of a thermal converter have been performed using a Josephson waveform synthesizer and a precision buffer amplifier at frequencies from 10 Hz to 4 kHz, showing agreement with conventional standards of better than 1 μV/V up to 1 kHz. In addition, a method of finding the operating parameters of the programmable Josephson array that corresponds to minimal uncertainty is discussed.
Keywords :
AC-DC power convertors; amplifiers; buffer circuits; signal synthesis; superconducting arrays; superconducting junction devices; voltage measurement; waveform generators; AC-DC difference measurement; Josephson waveform synthesizer; buffer amplifier; frequency 10 Hz to 4 kHz; operating parameter; precision AC-DC transfer measurement; programmable Josephson array; thermal converter; Arrays; Current measurement; Frequency measurement; Radio frequency; Transient analysis; Uncertainty; Voltage measurement; Josephson array; signal synthesis; thermal converter (TC); voltage measurement;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
DOI :
10.1109/TIM.2011.2157429
