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:
Feb. 12, 2008
Filed:
Aug. 21, 2006
Thomas Speck, Thalwil, CH;
Werner Tschopp, Forch, CH;
Thomas Speck, Thalwil, CH;
Werner Tschopp, Forch, CH;
Bruker Biospin AG, Faellanden, CH;
Abstract
A matrix shim system for generating magnetic field components superimposed on a main static magnetic field, comprising a plurality of annular coils, is characterized in that it comprises g groups G. . . Gof coils, with g being a natural number ≧1, wherein each group Gconsists of at least two single annular coils connected in series, wherein each group Gis designed to generate, in use, a magnetic field For each group G, there are at least two values of n for which with N: the total number of current supplies of the matrix shim system, and R: smallest inside radius of any of the annular coils of the matrix shim system. An individual, adjustable electrical current supply is provided for each group Gof coils. The inventive matrix shim system is both simple in design and stable against current fluctuations.