Spatial Fourier transform method for evaluating SQUID gradiometers
- 1 August 1987
- journal article
- Published by AIP Publishing in Review of Scientific Instruments
- Vol. 58 (8) , 1510-1513
- https://doi.org/10.1063/1.1139390
Abstract
A simple method of measuring the spatial transfer function of a gradiometer, consisting of a flux transformer coupled to a SQUID, is presented and it is compared with theoretical predictions. Based, on this approach, a new method of reporting a gradiometer’s performance is proposed; the rejection factor is expressed in decibels obtained directly from the transfer function plot.Keywords
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