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:
Apr. 01, 2014
Filed:
Aug. 26, 2011
Applicants:
Anuraag Mohan, Fremont, CA (US);
Peter J. Hopper, San Jose, CA (US);
Inventors:
Anuraag Mohan, Fremont, CA (US);
Peter J. Hopper, San Jose, CA (US);
Assignee:
National Semiconductor Corporation, Santa Clara, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
G01R 33/04 (2006.01);
U.S. Cl.
CPC ...
G01R 33/04 (2013.01);
Abstract
A fluxgate magnetometer is formed in a semiconductor wafer fabrication sequence, which significantly reduces the size and cost of the fluxgate magnetometer. The semiconductor wafer fabrication sequence attaches a die, which has drive and sense circuits, to the bottom surface of a cavity formed in a larger structure, and forms drive and sense coils around a magnetic core structure on the top surface of the larger structure.