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Josephson-Based Full Digital Bridge for High-Accuracy Impedance Comparisons

Published

Author(s)

Frederic Overney, Nathan E. Flowers-Jacobs, Blaise Jeanneret, Alain Rufenacht, Anna E. Fox, Jason M. Underwood, Andrew D. Koffman, Samuel P. Benz

Abstract

This paper describes a Josephson-based impedance bridge capable of comparing any types of impedance over a large bandwidth. The heart of the bridge is a dual AC Josephson Voltage Standards (ACJVS) source which offers unprecedented flexibility in high-precision impedance calibration (i.e. calibration at arbitrary ratios and phase angles) allowing full coverage of the complex plane using a single bridge.
Conference Dates
July 10-15, 2016
Conference Location
Ottawa, -1
Conference Title
Conference on Precision Electromagnetic Measurements

Keywords

Impedance comparison, ac coaxial bridge, AC Josephson voltage standard, digital bridge.
Created July 10, 2016, Updated November 10, 2018