Impedance Measurements with Programmable Josephson Systems

TitleImpedance Measurements with Programmable Josephson Systems
Publication TypeConference Publication
Year of publication2010
AuthorsLee, J., J. Schurr, J. Nissilä, and R. Behr
Conference nameConference on Precision Electromagnetic Measurements (CPEM) 2010
Conference locationDaejeon, Korea
Date publishedsubmitted 01/10

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 108 and thus comparable to those of conventional impedance bridges.