Title :
Characterization of four-terminal-pair resistance standards: a comparison of measurements and theory
Author :
Elmquist, Randolph E. ; Jeffery, Anne-Marie ; Jarrett, D.G.
Author_Institution :
Div. of Electr., Nat. Inst. of Stand. & Technol., Gaithersburg, MD, USA
fDate :
4/1/2001 12:00:00 AM
Abstract :
Coaxial straight-wire resistance standards with calculable frequency dependence, link AC measurements to DC measurements of resistance. Several coaxial standards of values 100 Ω and 1000 Ω are compared with each other and with other resistance standards at frequencies of 1592 Hz (ω≅104) and 15920 Hz (ω≅105) using AC bridges. The data are compared with calculations based on the geometry of this resistor design. Our results provide good assurance that the calculations are accurate for the quadrature component of admittance (phase angle), which is directly proportional to frequency. Frequency-dependent contributions to the in-phase component of admittance, which increase as the square of the frequency, are larger than predicted by the calculations
Keywords :
bridge circuits; electric admittance measurement; electric resistance measurement; resistors; transfer standards; 100 ohm; 1000 ohm; 1592 Hz; 15920 Hz; AC bridges; AC measurements; DC measurements; calculable frequency dependence; coaxial straight-wire resistance standards; coaxial transfer resistors; equivalent circuit; four-terminal-pair resistance standards; frequency-dependent contributions; in-phase component of admittance; phase angle; quadrature component of admittance; standards comparison; Admittance; Bridge circuits; Coaxial components; Conductors; Electrical resistance measurement; Frequency dependence; Frequency measurement; Measurement standards; Resistors; Wire;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
