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arXiv · 1408.2638

Experiences with a two terminal-pair digital impedance bridge

Luca Callegaro·Vincenzo D'Elia·Marian Kampik·Dan Bee Kim·Massimo Ortolano·Faranak Pourdanesh
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Abstract

This paper describes the realization of a two terminal-pair digital impedance bridge and the test measurements performed with it. The bridge, with a very simple architecture, is based on a commercial two-channel digital signal synthesizer and a synchronous detector. The bridge can perform comparisons between impedances having arbitrary phase and magnitude ratio: its balance is achieved automatically in less than a minute. $R$-$C$ comparisons with calibrated standards, at kHz frequency and 100 kohm magnitude level, give ratio errors of the order of $10^{-6}$, with potential for further improvements.

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Luca Callegaro, Vincenzo D'Elia, Marian Kampik, Dan Bee Kim, Massimo Ortolano, Faranak Pourdanesh. 2014-08-12. Experiences with a two terminal-pair digital impedance bridge. https://arxiv.org/abs/1408.2638

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