Invention Grant
- Patent Title: Cross-axis shield for out-of-plane magnetometer
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Application No.: US15993528Application Date: 2018-05-30
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Publication No.: US10816612B2Publication Date: 2020-10-27
- Inventor: Savas Gider , Jian Guo , Chaitanya Mudivarthi
- Applicant: Apple Inc.
- Applicant Address: US CA Cupertino
- Assignee: Apple Inc.
- Current Assignee: Apple Inc.
- Current Assignee Address: US CA Cupertino
- Agency: Fish & Richardson P.C.
- Main IPC: G01R33/00
- IPC: G01R33/00 ; G01C17/02 ; G01R33/09

Abstract:
Disclosed is a magnetometer architecture that uses a separate shield to minimize cross-axis sensitivity with low impact on main axis sensitivity. In an embodiment, a magnetometer with cross-axis shielding comprises: a ring shield; a magnetic yoke disposed within the ring shield; and one or more magnetic field sensors disposed between the ring shield and the magnetic yoke, the magnetic field sensors positioned relative to the ring shield and the magnetic yoke such that flux induced by a magnetic field is absorbed in a cross-axis direction of the magnetometer.
Public/Granted literature
- US20190369169A1 Cross-Axis Shield for Out-Of-Plane Magnetometer Public/Granted day:2019-12-05
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