Josephson analog amplifier with large current gain

K. Yoshida; T. Hashimoto; T. Nagatsuma; K. Enpuku

doi:10.1109/TMAG.1987.1064912

Josephson analog amplifier with large current gain

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

Superconductive Systems Engineering Laboratory

Research output: Contribution to journal › Article › peer-review

12 Citations (Scopus)

Abstract

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 language	English
Pages (from-to)	723-726
Number of pages	4
Journal	IEEE Transactions on Magnetics
Volume	23
Issue number	2
DOIs	https://doi.org/10.1109/TMAG.1987.1064912
Publication status	Published - Mar 1987

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Electrical and Electronic Engineering

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10.1109/TMAG.1987.1064912

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AU - Hashimoto, T.

AU - Nagatsuma, T.

AU - Enpuku, K.

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AB - 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.

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Josephson analog amplifier with large current gain

Abstract

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