Josephson-Based Full Digital Bridge for High-Accuracy Impedance Comparisons
Frederic Overney, Nathan E. Flowers-Jacobs, Blaise Jeanneret, Alain Rufenacht, Anna E. Fox, Jason M. Underwood, Andrew D. Koffman, Samuel P. Benz
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.
July 10-15, 2016
Conference on Precision Electromagnetic Measurements