Josephson tunnel junction microwave attenuator

V. P. Koshelets; S. V. Shitov; A. V. Shchukin; A. M. Baryshev; L. V. Filippenko; Gerd Michael Fischer; Jesper Mygind

doi:10.1063/1.110203

Josephson tunnel junction microwave attenuator

V. P. Koshelets, S. V. Shitov, A. V. Shchukin, A. M. Baryshev, L. V. Filippenko, Gerd Michael Fischer, Jesper Mygind

Russian Academy of Sciences

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Abstract

A new element for superconducting electronic circuitry-a variable attenuator-has been proposed, designed, and successfully tested. The principle of operation is based on the change in the microwave impedance of a superconductor-insulator-superconductor (SIS) Josephson tunnel junction when dc biased at different points in the current-voltage characteristic. Both numerical calculations based on the Tien-Gordon theory and 70-GHz microwave experiments have confirmed the wide dynamic range (more than 15-dB attenuation for one stage) and the low insertion loss in the ''open'' state. The performance of a fully integrated submillimeter receiver circuit which comprises a flux-flow oscillator (FFO) as local oscillator, a superconducting variable attenuator, and a microwave SIS detector with tuned-out capacitance is also reported.

Original language	English
Journal	Applied Physics Letters
Volume	63
Issue number	23
Pages (from-to)	3218-3220
ISSN	0003-6951
DOIs	https://doi.org/10.1063/1.110203
Publication status	Published - 1993

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Copyright (1993) American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics

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title = "Josephson tunnel junction microwave attenuator",

abstract = "A new element for superconducting electronic circuitry-a variable attenuator-has been proposed, designed, and successfully tested. The principle of operation is based on the change in the microwave impedance of a superconductor-insulator-superconductor (SIS) Josephson tunnel junction when dc biased at different points in the current-voltage characteristic. Both numerical calculations based on the Tien-Gordon theory and 70-GHz microwave experiments have confirmed the wide dynamic range (more than 15-dB attenuation for one stage) and the low insertion loss in the ''open'' state. The performance of a fully integrated submillimeter receiver circuit which comprises a flux-flow oscillator (FFO) as local oscillator, a superconducting variable attenuator, and a microwave SIS detector with tuned-out capacitance is also reported.",

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note = "Copyright (1993) American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics",

year = "1993",

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AU - Koshelets, V. P.

AU - Shitov, S. V.

AU - Shchukin, A. V.

AU - Baryshev, A. M.

AU - Filippenko, L. V.

AU - Fischer, Gerd Michael

AU - Mygind, Jesper

N1 - Copyright (1993) American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics

PY - 1993

Y1 - 1993

N2 - A new element for superconducting electronic circuitry-a variable attenuator-has been proposed, designed, and successfully tested. The principle of operation is based on the change in the microwave impedance of a superconductor-insulator-superconductor (SIS) Josephson tunnel junction when dc biased at different points in the current-voltage characteristic. Both numerical calculations based on the Tien-Gordon theory and 70-GHz microwave experiments have confirmed the wide dynamic range (more than 15-dB attenuation for one stage) and the low insertion loss in the ''open'' state. The performance of a fully integrated submillimeter receiver circuit which comprises a flux-flow oscillator (FFO) as local oscillator, a superconducting variable attenuator, and a microwave SIS detector with tuned-out capacitance is also reported.

AB - A new element for superconducting electronic circuitry-a variable attenuator-has been proposed, designed, and successfully tested. The principle of operation is based on the change in the microwave impedance of a superconductor-insulator-superconductor (SIS) Josephson tunnel junction when dc biased at different points in the current-voltage characteristic. Both numerical calculations based on the Tien-Gordon theory and 70-GHz microwave experiments have confirmed the wide dynamic range (more than 15-dB attenuation for one stage) and the low insertion loss in the ''open'' state. The performance of a fully integrated submillimeter receiver circuit which comprises a flux-flow oscillator (FFO) as local oscillator, a superconducting variable attenuator, and a microwave SIS detector with tuned-out capacitance is also reported.

U2 - 10.1063/1.110203

DO - 10.1063/1.110203

M3 - Journal article

SN - 0003-6951

VL - 63

SP - 3218

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JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 23

ER -

Josephson tunnel junction microwave attenuator

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