Title :
Coaxial calculable AC resistor
Author :
Bellon, M. ; Trapon, G. ; Lacueille, J.C. ; Pichon, L.
Author_Institution :
Lab. Central des Ind. Electr., Bur. Nat. de Metrol., Fontenay-aux-Roses, France
Abstract :
The principle of a new type of AC resistance standard with calculable frequency characteristics is proposed. The resistive element is a short stick of ceramics covered of a metallic thin film (Ni-Cr). The standard is defined in 5 terminals or in 4 terminal pairs configuration. The calculation of characteristics has been made both with analytic and numerical methods. These calculations permitted to define the geometry of the standard in order to get a time constant lower than 10 ps for a 10 k/spl Omega/ resistance (up to a few megahertz).
Keywords :
Maxwell equations; bridge circuits; electric resistance measurement; measurement standards; resistors; 10 kohm; 4 terminal pairs configuration; 5 terminal pairs configuration; AC resistance standard; Maxwell equations; calculable frequency characteristics; capacitance; coaxial calculable AC resistor; geometrical characteristics; inductance; metallic thin film covered; quadrature bridge; short stick of ceramics; time constant; uncertainty; Bridge circuits; Capacitance; Ceramics; Coaxial components; Conductors; Frequency; Measurement standards; Resistors; Standards development; Transistors;
Conference_Titel :
Precision Electromagnetic Measurements Digest, 1998 Conference on
Conference_Location :
Washington, DC, USA
Print_ISBN :
0-7803-5018-9
DOI :
10.1109/CPEM.1998.699998
