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:
Oct. 26, 2004
Filed:
Oct. 29, 2002
Applicant:
Inventors:
Assignee:
Qinetiq Limited, Farnborough, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R 3/306 ;
U.S. Cl.
CPC ...
G01R 3/306 ;
Abstract
The invention provides a Hall effect magnetic field sensor ( ) including carrier excluding or extracting means ( ) for reducing an intrinsic contribution to carrier concentration in the active region ( ) to provide for the sensor to be operative in an extrinsic saturated regime. This provides an advantage that magnetic field measurement sensitivity of the sensor ( ) can be made substantially insensitive to sensor temperature thereby improving measurement accuracy.