Josephson analog amplifier with large current gain

K. Yoshida, T. Hashimoto, T. Nagatsuma, K. Enpuku

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)


Analog amplifiers utilizing the flux-flow phenomenon in a long Josephson tunnel junction, Flux-Flow Amplifier(FFA), have been studied experimentally. The Operation of the amplifier is based on the modulation of dc I-V curves of a long Josephson junction by applied magnetic fields, which acts as a magnetic-field to voltage transducer. Strong dependences of the transducer characteristics on junction parameters and geometries are elucidated. Experiments on a series array of FFA's for higher current gains and larger output voltages were also carried out successfully.

Original languageEnglish
Pages (from-to)723-726
Number of pages4
JournalIEEE Transactions on Magnetics
Issue number2
Publication statusPublished - Mar 1987

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering


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