The use of (double) relaxation oscillation SQUIDs as a sensor

M.J. van Duuren; G.C.S. Brons; H. Kattouw; Jakob Flokstra; Horst Rogalla

doi:10.1109/77.622139

The use of (double) relaxation oscillation SQUIDs as a sensor

M.J. van Duuren
, G.C.S. Brons
, H. Kattouw
, Jakob Flokstra
, Horst Rogalla

Faculty of Science and Technology

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

2 Citations (Scopus)

342 Downloads (Pure)

Abstract

Relaxation Oscillation SQUIDs (ROSs) and Double Relaxation Oscillation SQUIDs (DROSs) are based on relaxation oscillations that are induced in hysteretic dc SQUIDs by an external L-R shunt. The relaxation frequency of a ROS varies with the applied flux Φ, whereas the output of a DROS is a dc voltage, with a typical flux-to-voltage transfer of ∂V/∂Φ≈1 mV/Φ0. The flux-to-frequency response of several ROSs has been measured and compared with theory for frequencies up to 7 GHz. Various DROS designs-a multi-loop direct coupling DROS, a DROS with a washer type signal SQUID and a DROS with gradiometric signal SQUID-will be discussed in this paper. The integration of a DROS with a digital flux locked loop (“Smart DROS”) will also be analyzed

Original language	Undefined
Pages (from-to)	3469-3472
Number of pages	4
Journal	IEEE transactions on applied superconductivity
Volume	7
Issue number	2
DOIs	https://doi.org/10.1109/77.622139
Publication status	Published - 1997

Keywords

METIS-129275
IR-24475

Access to Document

10.1109/77.622139

relaxation_oscillation_SQUIDs-duuren

Cite this

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title = "The use of (double) relaxation oscillation SQUIDs as a sensor",

abstract = "Relaxation Oscillation SQUIDs (ROSs) and Double Relaxation Oscillation SQUIDs (DROSs) are based on relaxation oscillations that are induced in hysteretic dc SQUIDs by an external L-R shunt. The relaxation frequency of a ROS varies with the applied flux Φ, whereas the output of a DROS is a dc voltage, with a typical flux-to-voltage transfer of ∂V/∂Φ\≈1 mV/Φ0. The flux-to-frequency response of several ROSs has been measured and compared with theory for frequencies up to 7 GHz. Various DROS designs-a multi-loop direct coupling DROS, a DROS with a washer type signal SQUID and a DROS with gradiometric signal SQUID-will be discussed in this paper. The integration of a DROS with a digital flux locked loop (“Smart DROS”) will also be analyzed",

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T1 - The use of (double) relaxation oscillation SQUIDs as a sensor

AU - van Duuren, M.J.

AU - Brons, G.C.S.

AU - Kattouw, H.

AU - Flokstra, Jakob

AU - Rogalla, Horst

PY - 1997

Y1 - 1997

N2 - Relaxation Oscillation SQUIDs (ROSs) and Double Relaxation Oscillation SQUIDs (DROSs) are based on relaxation oscillations that are induced in hysteretic dc SQUIDs by an external L-R shunt. The relaxation frequency of a ROS varies with the applied flux Φ, whereas the output of a DROS is a dc voltage, with a typical flux-to-voltage transfer of ∂V/∂Φ≈1 mV/Φ0. The flux-to-frequency response of several ROSs has been measured and compared with theory for frequencies up to 7 GHz. Various DROS designs-a multi-loop direct coupling DROS, a DROS with a washer type signal SQUID and a DROS with gradiometric signal SQUID-will be discussed in this paper. The integration of a DROS with a digital flux locked loop (“Smart DROS”) will also be analyzed

AB - Relaxation Oscillation SQUIDs (ROSs) and Double Relaxation Oscillation SQUIDs (DROSs) are based on relaxation oscillations that are induced in hysteretic dc SQUIDs by an external L-R shunt. The relaxation frequency of a ROS varies with the applied flux Φ, whereas the output of a DROS is a dc voltage, with a typical flux-to-voltage transfer of ∂V/∂Φ≈1 mV/Φ0. The flux-to-frequency response of several ROSs has been measured and compared with theory for frequencies up to 7 GHz. Various DROS designs-a multi-loop direct coupling DROS, a DROS with a washer type signal SQUID and a DROS with gradiometric signal SQUID-will be discussed in this paper. The integration of a DROS with a digital flux locked loop (“Smart DROS”) will also be analyzed

KW - METIS-129275

KW - IR-24475

U2 - 10.1109/77.622139

DO - 10.1109/77.622139

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