Title :
Josephson voltage standard cryoelectronic circuits in Nb/Al/sub 2/O/sub 3//Nb technology operating at low drive frequencies
Author :
Wende, G. ; Fritzsch, L. ; Kohler, H.-J. ; Thrum, F. ; Meyer, H.-G.
Author_Institution :
Dept. of Cryoelectron., Inst. of Phys. High Technol., Jena, Germany
Abstract :
A new type of cryoelectronic microwave circuits in Nb/Al/sub 2/O/sub 3//Nb technology for the generation of frequency-scaled Josephson voltages is presented. The circuits consist of superconducting microstripline resonators with series arrays of Josephson tunnel junctions located on the rf current antinodes. The circuits are designed to obtain highly accurate Josephson voltages at low rf power levels and low drive frequencies. At present, we have observed Josephson voltages up to 0.66 V in a resonator circuit with 1456 junctions.
Keywords :
Josephson effect; aluminium compounds; cryogenic electronics; measurement standards; microstrip resonators; microwave measurement; niobium; superconducting microwave devices; superconductor-insulator-superconductor devices; voltage measurement; 0.66 V; Josephson tunnel junctions; Josephson voltage standard; Nb-Al/sub 2/O/sub 3/-Nb; cryoelectronic circuits; drive frequencies; frequency-scaled Josephson voltages; microwave circuits; resonator circuit; rf current antinodes; series arrays; superconducting microstripline resonators; Frequency; High power microwave generation; Josephson junctions; Microstrip antenna arrays; Microwave circuits; Microwave generation; Microwave technology; Niobium; Superconducting microwave devices; Voltage;
Conference_Titel :
Precision Electromagnetic Measurements Digest, 1996 Conference on
Conference_Location :
Braunschweig, Germany
Print_ISBN :
0-7803-3376-4
DOI :
10.1109/CPEM.1996.547041
