A new sampling-based four-terminal-pair digital impedance bridge. (December 2021)

• Record Type: Journal Article
• Authors: Musioł, Krzysztof; Kampik, Marian; Koszarny, Maciej
• Is Part Of: Measurement. Volume 18(2021)
• Publication Date: 2021-12
• Subjects: Impedance comparison -- Digital bridge -- AC voltage Source -- AC coaxial Bridge -- Measurement standards; Detectors -- Periodicals; Measurement -- Periodicals; 530.7
• DOI: 10.1016/j.measen.2021.100307
• Languages: English
• ISSNs: 2665-9174

Abstract

Abstract: This paper describes new realization of a sampling-based four-terminal-pair digital impedance bridge and test measurements performed with it. The bridge is based on a new two-channel high-stability digitally synthesized source and a commercial PXI synchronous sampling system. The bridge is capable of comparing any two impedances, regardless of type (R–C, R-L, or L-C), over a large frequency range (from 20 Hz to 20 kHz). Comparisons at 1 kHz and 1592 Hz in the impedance range from several hundred Ω to several kΩ give ratio errors at the level 10 −6 for any kind of impedances, with potential for further improvements.