An automated 55 gigahertz cryogenic Josephson sampling oscilloscope.

Summary

A computer-automated superconductive 55 gigahertz sampling oscilloscope based on 4 kiloampere/cm2, niobium/niobium(2)-oxygen(5)/lead edge Josephson junctions is presented. The Josephson sampler chip was flip-chip bonded to a carrier chip with a coplanar transmission line by use of a novel flip-chip bonding machine. A 5.6 ps step pulse was successfully coupled into the transmission line and 18.5 gigahertz multiple reflections plus a parasitic oscillation at 43 gigahertz were observed.

Details

  • Original title: An automated 55 gigahertz cryogenic Josephson sampling oscilloscope.
  • Record ID : 1994-1396
  • Languages: English
  • Source: Rev. sci. Instrum. - vol. 64 - n. 2
  • Publication date: 1993/02
  • Document available for consultation in the library of the IIR headquarters only.

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