About 60 years after the discovery of the Josephson effect, electrical DC voltage calibrations
are routinely performed worldwide—mostly using automated Josephson voltage standards …

We report on the design, fabrication, and measurement of a very high frequency band
Josephson arbitrary waveform synthesizer (VHF-JAWS) at frequencies from 1 kHz to 50.05 …

Fully digital impedance bridges are emerging as measuring instruments for primary
electrical impedance metrology and the realization of impedance units and scales. This …

This paper introduces a four-terminal-pair impedance bridge based on pulse-driven
Josephson junctions arrays which is designed to link any kind of impedance to the …

This article describes an automated electronic fully digital bridge for the comparison of four-
terminal-pair (4TP) impedance standards in the audio frequency range. The bridge relative …

In the currently used primary impedance measuring systems, there is a need to compare
standards with ratios different from 1: 1, eg, in order to transfer the value to multiples or …

This paper presents the implementation of an electronic fully-digital impedance bridge
optimized for RC comparisons with equal impedance magnitudes, together with an …

The article analyzes three modified versions of the standard ellipse fitting algorithm (EFA),
which enables the determination of the complex voltage ratio (CVR) for extremely small …

The first two impedance bridges based on pulse-driven Josephson voltage standards show
the lowest uncertainties among digital bridges even comparable with state-of-the-art bridges …

The performance of programmable voltage signals that exploit the quantum behavior of
superconducting Josephson junctions continues to improve and enhance measurements in …