Device for compensating electromagnetic interferences during biomagnetic measurements
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United States of America Patent
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Oct 31, 2017
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app pub date -
May 17, 2012
filing date -
Feb 2, 2012
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Abstract
Invention, relates to the field of supersensitive biomagnetometry under presence of external electromagnetic interferences. In order to perform passive compensation of said interferences, design of device at the magnetometer input is proposed, comprising compensation elements and means for their moving including shifting, holding, and fixation units. In the basic embodiment, three short-closed wire contours are used which are orthogonally placed in space and independently moved up-down relative to the magnetometer or its input antenna. Contours are fixed in positions where minimum of external interference amplitude is achieved according to given field projection. Variants are proposed with cooling of meter and/or contours, location of contours inside the cryostat and their manufacturing from superconductors.
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