Title :
Experiences With a Two-Terminal-Pair Digital Impedance Bridge
Author :
Callegaro, Luca ; D´Elia, Vincenzo ; Kampik, Marian ; Dan Bee Kim ; Ortolano, Massimo ; Pourdanesh, Faranak
Author_Institution :
Electromagn. Div., Ist. Naz. di Ricerca Metrol., Turin, Italy
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 the impedances having arbitrary phase and magnitude ratio. The bridge balance is achieved automatically in less than 1 min. R-C comparisons with calibrated standards, at kilohertz frequencies and 100-kQ magnitude level, give ratio errors of the order of 10-6, with potential for further improvements.
Keywords :
bridge instruments; electric impedance measurement; bridge balance; kilohertz frequencies; synchronous detector; test measurements; two channel digital signal synthesizer; two terminal pair digital impedance bridge; Bridge circuits; Capacitance; Frequency measurement; Impedance; Impedance measurement; Standards; Uncertainty; Admittance; bridge circuits; impedance; measurement standards; metrology; precision measurements; precision measurements.;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
DOI :
10.1109/TIM.2015.2401192