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:
Aug. 06, 2002
Filed:
Aug. 21, 2000
Applicant:
Inventors:
James Daughton, Eden Prairie, MN (US);
John Stokes, Rochester, MN (US);
Assignee:
The United States of America as represented by the Secretary of the Air Force, Washington, DC (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01R 3/300 ;
U.S. Cl.
CPC ...
G01R 3/300 ;
Abstract
A configuration where a wide range of current can be sensed accurately in spite of using a magnetic material with non-linearities and limited hysteresis. This configuration includes: a strip line current carrier, an IC chip containing a GMR sensor element, an integrated drive coil, like an isoloop. Field produced by current in the strip line is detected by the sensor. Feedback field is produced by current in an on-chip coil to counteract spurious fields from the strip line.