Invention Grant
- Patent Title: Low hysteresis high sensitivity magnetic field sensor
- Patent Title (中): 低磁滞高灵敏度磁场传感器
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Application No.: US13341355Application Date: 2011-12-30
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Publication No.: US09322889B2Publication Date: 2016-04-26
- Inventor: Catherine Ann Nordman , Peter Eames , Russ Beech , David J. Brownell
- Applicant: Catherine Ann Nordman , Peter Eames , Russ Beech , David J. Brownell
- Applicant Address: US MN Eden Prairie
- Assignee: NVE Corporation
- Current Assignee: NVE Corporation
- Current Assignee Address: US MN Eden Prairie
- Agency: Kinney & Lange, P.A.
- Main IPC: G01R33/14
- IPC: G01R33/14 ; G01R33/09

Abstract:
An MTJ sensor having low hysteresis and high sensitivity is disclosed. The MTJ sensor includes, in one embodiment, a bridge with first and second active MTJ elements and first and second passive MTJ elements connected in a Wheatstone bridge configuration. First and second magnetic shield elements are located over the first and second passive MTJ elements and form a gap therebetween that concentrates magnetic flux toward the first and second active MTJ elements. A three-dimensional coil is wound around the first and second magnetic shield elements with over-windings located over the first and second magnetic shield elements and under-windings located under the first and second magnetic shield elements, connected together by a plurality of vias adjacent the first and second magnetic shield elements.
Public/Granted literature
- US20130169271A1 LOW HYSTERESIS HIGH SENSITIVITY MAGNETIC FIELD SENSOR Public/Granted day:2013-07-04
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