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

fYear

1996

fDate

17-21 June 1996

Firstpage

223

Lastpage

224

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Precision Electromagnetic Measurements Digest, 1996 Conference on

Conference_Location

Braunschweig, Germany

Print_ISBN

0-7803-3376-4

Type

conf

DOI

10.1109/CPEM.1996.547041

Filename

547041