Title :
Ratio standard for DC resistance using a Josephson potentiometer
Author :
Kohlmann, Johannes ; Guttmann, P. ; Niemeyer, Jiirgen
Author_Institution :
Phys.-Tech. Bundesanstalt, Braunschweig, Germany
fDate :
4/1/1993 12:00:00 AM
Abstract :
A Josephson potentiometer for the comparison of two-terminal DC resistors in the range from about 10 kΩ to at least 10 MΩ is described. It is based on a three-terminal Josephson junction series array. Resistance ratios from 1:1 to 1:10 are compared with a single device. Measurements with a prototype instrument show a relative reproducibility of 1 part in 107. Besides standard Josephson junction series arrays with a characteristic impedance of the stripline Z≈3 Ω high-impedance arrays with Z≈77 Ω were realized
Keywords :
Josephson effect; electric resistance measurement; measurement standards; potentiometers; resistors; 10 kohm to 10 Mohm; DC resistance; Josephson potentiometer; high-impedance arrays; reproducibility; resistance ratio standard; tree-terminal series array; two-terminal DC resistors; Bridge circuits; Impedance; Instruments; Josephson junctions; Microwave antenna arrays; Potentiometers; Resistors; Stripline; Voltage; Voltage-controlled oscillators;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
