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Título:	Uncertainty analysis in two-terminal impedance measurements with residual correction
Autor/a:	Torrents Dolz, Josep M.; Pallàs Areny, Ramon
Otros autores:	Universitat Politècnica de Catalunya. Departament d'Enginyeria Electrònica; Universitat Politècnica de Catalunya. GRUP ISI - Grup d'Instrumentació, Sensors i Interfícies
Abstract:	Residual impedance correction in impedance analyzers when using an asymmetrical test fixture needs three reference measurements, usually open circuit, short circuit, and load (meaning an impedance close to the impedance under test). This paper provides an uncertainty estimate for impedance measurements that apply a simple open/short correction in spite of using an asymmetrical test fixture. Experimental results show that the minimal uncertainty is obtained for impedance values close to the geometric mean of the short-circuit and open-circuit impedances, and that the theoretical prediction is indeed an upper limit for the actual uncertainty
Abstract:	Peer Reviewed
Materia(s):	-Àrees temàtiques de la UPC::Enginyeria electrònica::Instrumentació i mesura -Impedance (Electricity) -Impedance measurements -Residual correction -Impedància (Electricitat)
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Tipo de documento:	Objeto de conferencia
Editor:	Institute of Electrical and Electronics Engineers
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