The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 23, 1986
Filed:
Jun. 14, 1984
Eckhardt Hoenig, Erlangen, DE;
Siemens Aktiengesellschaft, Berlin and Munich, DE;
Abstract
A superconducting gradiometer coil system is provided for an apparatus for the multi-channel measurement of weak non-stationary magnetic fields in a field intensity range under 10.sup.-10 T. The apparatus includes, in each channel, at least one detection coil and at least one compensation coil comprising a gradiometer coil pair, a superconducting quantum interference device (SQUID) and corresponding superconducting connecting members coupling the coils and the SQUIDs, and electronic apparatus for evaluating, processing and displaying the information generated by the quantum interference devices. The gradiometer coil system permits a relatively simple one-time adjustment and has an active area as small as possible. At least the gradiometer detection and compensation coils and their mutual connecting elements are deposited as planar thin-film structures on a common rigid support body. The compensation coils are combined to form a reference coil arrangement about which the individual detection coils are disposed. In particular, the compensation coils of the reference coil arrangement can be formed at least partially of individual loops which surround each other and lie in one plane.