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US 10,310,026 B2Granted
Bias field generation for a magneto sensor
AssigneeInfineon Technologies AG
InventorsTobias Werth, Klaus Elian, James Sterling
Life of this patent
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Abstract
Embodiments related to the generation of magnetic bias fields for magnetic sensing are described and depicted. In one embodiment, a sensor includes at least one magnetosensitive element, and a magnetic body with an opening, the magnetic body comprising magnetic material, the magnetic body having inclined surface sections shaped by the opening, wherein the sensor is arranged within the opening such that the magnetosensitive element is in lateral directions bounded by the inclined surface sections.
Claims20
A device comprising:
- a magnetic sensor;
- and
- a bias field generator including a cavity having a width along a first direction, wherein the width increases from a minimum width to a maximum width as a distance from the magnetic sensor along a second direction orthogonal to the first direction increases, the minimum width of the cavity being smaller than a width of the magnetic sensor.
A device comprising:
- a magnetic sensor;
- and
- a bias field generator arranged adjacent to the magnetic sensor in a first direction, the bias field generator including a cavity formed in the bias field generator and defined by first and second inclined surfaces, the cavity having a width along a second direction orthogonal to the first direction that increases from a minimum width to a maximum width as a distance from the magnetic sensor along the first direction increases, wherein the magnetic sensor is laterally bound by the first and the second inclined surfaces in the second direction, the minimum width of the cavity being smaller than a width of the magnetic sensor.
A device comprising:
- a magnetic sensor;
- and
- a bias field generator arranged with respect to the magnetic sensor in a first direction, the bias field generator including a cavity formed in the bias field generator and extending into the bias field generator in the first direction,
- wherein a cross-sectional area of the cavity defined in a plane that extends along a second direction orthogonal to the first direction and along a third direction orthogonal to the first and the second directions increases from a minimum cross-sectional area to a maximum cross-sectional area as a distance from the magnetic sensor along the first direction increases, the minimum cross-sectional area of the cavity being smaller than a cross-sectional area of the magnetic sensor defined in the plane.
1 more element
Dependencies are inferred from the claim text.