Comparison of a 1 nF Capacitor with a 1 kΩ Resistor Using a Digital Impedance Bridge

This paper reports our effort to improve a digital impedance bridge. The limit of the bridge resolution and stability is less than 3 parts in 10 9 for the nominal 1:1 impedance comparison of two 100 pF capacitors. The Type A uncertainty for comparison of a 1 nF capacitor with a 1 kΩ resistor is abou...

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Bibliographic Details
Published in2024 Conference on Precision Electromagnetic Measurements (CPEM) pp. 1 - 2
Main Authors Wang, Y., Schlamminger, S., Jarrett, D., Panna, A., Koffman, A.D.
Format Conference Proceeding
LanguageEnglish
Published IEEE 08.07.2024
Subjects
Bridges
capacitance unit
Capacitors
Digital bridge
digital sampling
Electromagnetic measurements
Impedance
impedance standard
NIST
Resistors
Uncertainty
voltage ratio
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Summary:This paper reports our effort to improve a digital impedance bridge. The limit of the bridge resolution and stability is less than 3 parts in 10 9 for the nominal 1:1 impedance comparison of two 100 pF capacitors. The Type A uncertainty for comparison of a 1 nF capacitor with a 1 kΩ resistor is about 1 part in 10 8 , presently limited by the stability of the resistor.
ISSN:2160-0171
DOI:10.1109/CPEM61406.2024.10646139