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Origin of 1/f noise in Y1Ba2Cu3O7−x step-edge dc SQUIDs

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Microphone Array Post-filter based on Noise Field Coherence

Hervé Bourlard

This article introduces a novel technique for estimating the signal power spectral density to be used in the transfer function of a microphone array post-filter. The technique is a generalisation of the existing Zelinski post-filter, which uses the auto- a ...

IDIAP2001

Detection and filtering of short-term (1/f) noise in inertial sensors

Jan Skaloud

Systematic and random errors inherently present in all inertial sensors contribute to the long-term divergence of the navigation solution of an Inertial Navigation System (INS). To keep such long-term divergence under control while taking advantage of thei ...

Cambridge University Press1999

High-sensitive superconducting magnetometry on a two-dimensional electron gas up to 10 Tesla

Dirk Grundler

We report on new magnetization studies on a two-dimensional electron system (2DES) revealing spin splitting of the Landau levels. For this, we have built a high-sensitive susceptometer consisting of a low-noise thin-film dc superconducting quantum interfer ...

American Institute of Physics1997

High- SQUID magnetometers for biomagnetic measurements

Dirk Grundler

We have designed and fabricated three types of high- SQUID (superconducting quantum interference device) magnetometers based on step-edge Josephson junctions using three different concepts of coupling magnetic flux into the SQUID: (i) a single pickup loop ...

1996

Integrated high-T/sub c/ SQUID magnetometer

Dirk Grundler

We have fabricated an integrated SQUID magnetometer based on Y/sub 1/Ba/sub 2/Cu/sub 3/O/sub 7/ step-edge Josephson junctions. A tight coupling between the input coil and the SQUID washer has been achieved with a coupling coefficient K of 0.9. Noise measur ...

1995

Multilevel devices of YBa/sub 2/Cu/sub 3/O/sub 7/ with NdGaO/sub 3/ barrier

Dirk Grundler

We have fabricated YBa/sub 2/Cu/sub 3/O/sub 7/ ramp-type junctions incorporating a barrier layer of NdGaO/sub 3/ with a nominal thickness of 2 nm. The junctions exhibit pronounced Josephson effects and operate up to 82 K. The characteristics are well descr ...

Institute of Electrical and Electronics Engineers1995