The Distributed Josephson Inductance Phase Shifter

Dale J. Durand; James Carpenter; Eric Ladizinsky; L. Lee; Charles M. Jackson; Arnold Silver; Andrew D. Smith

doi:10.1109/77.124932

The Distributed Josephson Inductance Phase Shifter

Dale J. Durand, James Carpenter, Eric Ladizinsky, L. Lee, Charles M. Jackson, Arnold Silver, Andrew D. Smith

Department of Chemistry & Nanoscience

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

20 Scopus citations

Abstract

We report on a novel microwave phase shifter featuring rapid electronic adjustment, continuous phase control, true time delay operation, high device fault tolerance, and very broad-band operation. By coupling a large number of superconducting quantum interference devices (SQUID’s) to a superconducting microstrip transmission line, we create a variable magnetic medium in which the wave velocity is controlled electronically. We have measured 60° phase shift at 10 GHz, and wideband operation from 5 to 15 GHz for an 8-cm long Nb transmission line coupled to 1600 SQUID’s, each containing a single Nb/A!O_x/Nb tunnel junction. The observed phase shift corresponds to a change in wave velocity of about 1 part in 60.

Original language	English
Pages (from-to)	33-38
Number of pages	6
Journal	IEEE Transactions on Applied Superconductivity
Volume	2
Issue number	1
DOIs	https://doi.org/10.1109/77.124932
State	Published - Mar 1992

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AU - Carpenter, James

AU - Ladizinsky, Eric

AU - Lee, L.

AU - Jackson, Charles M.

AU - Silver, Arnold

AU - Smith, Andrew D.

PY - 1992/3

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N2 - We report on a novel microwave phase shifter featuring rapid electronic adjustment, continuous phase control, true time delay operation, high device fault tolerance, and very broad-band operation. By coupling a large number of superconducting quantum interference devices (SQUID’s) to a superconducting microstrip transmission line, we create a variable magnetic medium in which the wave velocity is controlled electronically. We have measured 60° phase shift at 10 GHz, and wideband operation from 5 to 15 GHz for an 8-cm long Nb transmission line coupled to 1600 SQUID’s, each containing a single Nb/A!Ox/Nb tunnel junction. The observed phase shift corresponds to a change in wave velocity of about 1 part in 60.

AB - We report on a novel microwave phase shifter featuring rapid electronic adjustment, continuous phase control, true time delay operation, high device fault tolerance, and very broad-band operation. By coupling a large number of superconducting quantum interference devices (SQUID’s) to a superconducting microstrip transmission line, we create a variable magnetic medium in which the wave velocity is controlled electronically. We have measured 60° phase shift at 10 GHz, and wideband operation from 5 to 15 GHz for an 8-cm long Nb transmission line coupled to 1600 SQUID’s, each containing a single Nb/A!Ox/Nb tunnel junction. The observed phase shift corresponds to a change in wave velocity of about 1 part in 60.

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The Distributed Josephson Inductance Phase Shifter

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