Title :
DC voltage synthesis using a pulse-quantized Josephson voltage source
Author :
Benz, S.P. ; Christian, L.A. ; Burroughs, C.J. ; Hamilton, C.A.
Author_Institution :
Nat. Inst. of Stand. & Technol., Boulder, CO, USA
Abstract :
We have synthesized and measured DC voltages using a bipolar pulse-quantized Josephson voltage waveform synthesizer. Bias current ranges were determined for 101 equally spaced DC voltage steps between -18.6 and +18.6 mV. The flatness of a step at -7.444 mV was found to vary only 2.6 nV with a type A standard uncertainty of 1.6 nV. The linearity of a nanovoltmeter was investigated by synthesizing 11 different DC voltages.
Keywords :
measurement standards; superconducting arrays; superconducting junction devices; voltage measurement; waveform generators; -18.6 to 18.6 mV; DC accuracy; DC voltage synthesis; Josephson voltage standard; bias current ranges; bipolar voltage waveform synthesizer; equally spaced DC voltage steps; nanovoltmeter linearity; pulse-quantized Josephson voltage source; step flatness; type A standard uncertainty; Circuit synthesis; Clocks; Current measurement; DC generators; Electrical resistance measurement; Frequency synthesizers; Josephson junctions; Pulse measurements; Transmission line measurements; Voltage;
Conference_Titel :
Precision Electromagnetic Measurements Digest, 2000 Conference on
Conference_Location :
Sydney, NSW, Australia
Print_ISBN :
0-7803-5744-2
DOI :
10.1109/CPEM.2000.851014
