Title :
Optimized 1 V and 10 V Josephson series arrays
Author :
Muller, F. ; Popel, R. ; Kohlmann, J. ; Niemeyer, J. ; Meier, W. ; Weimann, T. ; Grimm, L. ; Dunschede, F. ; Gutm, P.
Author_Institution :
Physikalisch Tech. Bundesanstalt, Braunschweig, Germany
Abstract :
By means of a new fabrication method and detailed design investigations we have been able to optimize the array circuits for the Josephson voltage standard. Even in very long arrays (4800 junctions in one stripline) a yield of 1 mV per junction could be achieved. The microwave power at 70 GHz required for the stable operation of 1 V and 10 V circuits could be reduced down to 1 mW and 10 mW (antenna input), respectively.
Keywords :
Josephson effect; aluminium compounds; calibration; measurement standards; microwave measurement; niobium; strip line circuits; superconductor-insulator-superconductor devices; voltage measurement; 1 V; 1 mW; 10 V; 10 mW; 70 GHz; Josephson series arrays; Josephson voltage standard; Nb-Al/sub 2/O/sub 3/-Nb; antenna input; array circuits; microwave power; stable operation; stripline; Attenuation; Circuit stability; Circuit testing; Electrodes; Power distribution; Reflection; Stripline; Tuned circuits; Voltage; Wiring;
Conference_Titel :
Precision Electromagnetic Measurements Digest, 1996 Conference on
Conference_Location :
Braunschweig, Germany
Print_ISBN :
0-7803-3376-4
DOI :
10.1109/CPEM.1996.546659
