Microstrip coupling techniques applied to thin-film Josephson junctions at microwave frequencies

O H Sørensen, Niels Falsig Pedersen, Jesper Mygind, Benny Dueholm, T Finnegan, J Hansen, P. Lindelof

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Abstract

Three different schemes for coupling to low impedance Josephson devices have been investigated. They all employ superconducting thin-film microstrip circuit techniques. The schemes are: (i) a quarterwave stepped impedance transformer, (ii) a microstrip resonator, (iii) an adjustable impedance transformer in inverted microstrip. Using single microbridges to probe the performance we found that the most primising scheme in terms of coupling efficiency and useful bandwidth was the adjustable inverted microstrip transformer.
Original languageEnglish
JournalI E E E Transactions on Magnetics
Volume17
Issue number1
Pages (from-to)107-110
ISSN0018-9464
DOIs
Publication statusPublished - 1981

Bibliographical note

Copyright: 1981 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE

Cite this

Sørensen, O H ; Pedersen, Niels Falsig ; Mygind, Jesper ; Dueholm, Benny ; Finnegan, T ; Hansen, J ; Lindelof, P. / Microstrip coupling techniques applied to thin-film Josephson junctions at microwave frequencies. In: I E E E Transactions on Magnetics. 1981 ; Vol. 17, No. 1. pp. 107-110.
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Microstrip coupling techniques applied to thin-film Josephson junctions at microwave frequencies. / Sørensen, O H; Pedersen, Niels Falsig; Mygind, Jesper; Dueholm, Benny; Finnegan, T; Hansen, J; Lindelof, P.

In: I E E E Transactions on Magnetics, Vol. 17, No. 1, 1981, p. 107-110.

Research output: Contribution to journalJournal articleResearchpeer-review

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T1 - Microstrip coupling techniques applied to thin-film Josephson junctions at microwave frequencies

AU - Sørensen, O H

AU - Pedersen, Niels Falsig

AU - Mygind, Jesper

AU - Dueholm, Benny

AU - Finnegan, T

AU - Hansen, J

AU - Lindelof, P.

N1 - Copyright: 1981 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE

PY - 1981

Y1 - 1981

N2 - Three different schemes for coupling to low impedance Josephson devices have been investigated. They all employ superconducting thin-film microstrip circuit techniques. The schemes are: (i) a quarterwave stepped impedance transformer, (ii) a microstrip resonator, (iii) an adjustable impedance transformer in inverted microstrip. Using single microbridges to probe the performance we found that the most primising scheme in terms of coupling efficiency and useful bandwidth was the adjustable inverted microstrip transformer.

AB - Three different schemes for coupling to low impedance Josephson devices have been investigated. They all employ superconducting thin-film microstrip circuit techniques. The schemes are: (i) a quarterwave stepped impedance transformer, (ii) a microstrip resonator, (iii) an adjustable impedance transformer in inverted microstrip. Using single microbridges to probe the performance we found that the most primising scheme in terms of coupling efficiency and useful bandwidth was the adjustable inverted microstrip transformer.

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