Title :
Progress toward an AC Josephson voltage standard
Author :
Hamilton, C. ; Burroughs, C.J. ; Benz, S.P.
Author_Institution :
Nat. Inst. of Stand. & Technol., Boulder, CO, USA
Abstract :
Progress toward a Josephson voltage standard for fast DC measurements and AC waveform synthesis is described, including a version with SNS junctions operated at 11 GHz. A bias control circuit that achieves milliampere drive capability, transient suppression, and submicrosecond settling time is used for fast, automated measurements of A/D converter linearity, squarewave synthesis at 400 Hz, and a test for subnanovolt accuracy.
Keywords :
Josephson effect; measurement standards; voltage measurement; 11 GHz; 400 Hz; A/D converter linearity; AC Josephson voltage standard; AC waveform synthesis; SNS junctions; bias control circuit; milliampere drive capability; squarewave synthesis; submicrosecond settling time; subnanovolt accuracy; transient suppression; Automatic control; Circuit synthesis; Circuit testing; Linearity; Measurement standards; NIST; Switches; Switching converters; Time measurement; Voltage;
Conference_Titel :
Precision Electromagnetic Measurements Digest, 1996 Conference on
Conference_Location :
Braunschweig, Germany
Print_ISBN :
0-7803-3376-4
DOI :
10.1109/CPEM.1996.546658
