Impedance measurements with Programmable Josephson Systems

Arbitrary impedance ratios can be determined with high accuracy by means of a programmable Josephson system. For a 1:1 resistance ratio at 10-kΩ level we demonstrate that the novel system allows measurements over a wide frequency range from 25 Hz to 10 kHz. Uncertainties are in the range of a few pa...

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Bibliographic Details
Main Authors: Lee, Jinni, Schurr, Jürgen, Nissilä, Jaani, Palafox, Luis, Behr, Ralf
Format: Conference Proceeding
Language:English
Subjects:
Bridge circuits
Electrical resistance measurement
Electromagnetic measurements
Frequency measurement
Impedance measurement
Josephson junctions
Measurement standards
Metrology
Power system transients
Voltage
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Description
Summary:Arbitrary impedance ratios can be determined with high accuracy by means of a programmable Josephson system. For a 1:1 resistance ratio at 10-kΩ level we demonstrate that the novel system allows measurements over a wide frequency range from 25 Hz to 10 kHz. Uncertainties are in the range of a few parts in 10 8 and thus comparable to those of conventional impedance bridges.
ISSN:0589-1485
2160-0171
DOI:10.1109/CPEM.2010.5543389