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Characterization of a Dual Josephson Impedance Bridge



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


This paper describes a dual Josephson impedance bridge capable of comparing any two impedances, that is, with any amplitude ratio and relative phase, over a wide range of frequency. A new, more compact, design has been achieved by mounting the two Josephson Arbitrary Waveform Synthesizers (dual JAWS) side by side in a single cryoprobe. We measure the crosstalk between the two JAWS sources and show that, by interchanging the impedances within the bridge, the effect of the crosstalk between JAWS sources can be reduced to a negligible level.
Proceedings Title
2018 Conference on Precision Electromagnetic Measurements
Conference Dates
July 8-13, 2018
Conference Location
Paris, FR


Impedance comparison, AC Josephson voltagestandard, Josephson Arbitrary Waveform Synthesizer, AC coaxialbridge


Flowers-Jacobs, N. , Jeanneret, B. , Overney, F. , Rufenacht, A. , Fox, A. , Dresselhaus, P. and Benz, S. (2018), Characterization of a Dual Josephson Impedance Bridge, 2018 Conference on Precision Electromagnetic Measurements, Paris, FR, [online],, (Accessed April 21, 2024)
Created October 21, 2018, Updated April 12, 2022