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Dual Josephson Impedance Bridge: Universal bridge for impedance metrology



Frederic Overney, Nathan E. Flowers-Jacobs, Blaise Jeanneret, Alain Rufenacht, Anna E. Fox, Paul D. Dresselhaus, Samuel P. Benz


This paper describes the results of the calibration of a 100 pF capacitance standard performed at 1233 Hz. Two calibration chains were used. The classical calibration chain, involving a quadrature bridge and a 1:10 ratio bridge, and the faster and simpler calibration chain based on the Dual Josephson Impedance Bridge (DJIB). The results of the two procedures are in agreement within the uncertainty of the DJIB (u(k=1)=57 nF/F), which is slightly smaller than the uncertainty of the classical calibration chain presently in operation at METAS.
Conference Dates
August 24-28, 2020
Conference Location
Denver, CO
Conference Title
2020 Conference on Precision Electromagnetic Measurements (CPEM)


Dual Josephson Impedance Bridge, DJIB, quantum Hall effect, Josephson Arbitrary Waveform Synthesizer, JAWS, high-precision impedance measurements, uncertainty budget, METAS, arbitrary impedances, wide frequency range, automated balancing procedure
Created August 23, 2020, Updated September 28, 2020