Magnetic-field sensor
First Claim
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1. A magnetic-field sensor comprising:
- a magnetic-field sensor arrangement comprising a first magnetic-field sensor element and a second magnetic-field sensor element in a sensor plane;
a first magnetic body comprising a first magnetization direction; and
a second magnetic body comprising a second magnetization direction,wherein the first and second magnetization directions differ from each other wherein the first magnetization direction forms a first angle with a symmetry line, the symmetry line being perpendicular to the sensor plane, wherein the second magnetization direction forms a second angle with the symmetry line, and wherein the first and second angles differ by less than 5°
in magnitude.
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Abstract
An embodiment of a magnetic-field sensor includes a magnetic-field sensor arrangement and a magnetic body which has, for example, a non-convex cross-sectional area with regard to a cross-sectional plane running through the magnetic body, the magnetic body having an inhomogeneous magnetization.
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Citations
23 Claims
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1. A magnetic-field sensor comprising:
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a magnetic-field sensor arrangement comprising a first magnetic-field sensor element and a second magnetic-field sensor element in a sensor plane; a first magnetic body comprising a first magnetization direction; and a second magnetic body comprising a second magnetization direction, wherein the first and second magnetization directions differ from each other wherein the first magnetization direction forms a first angle with a symmetry line, the symmetry line being perpendicular to the sensor plane, wherein the second magnetization direction forms a second angle with the symmetry line, and wherein the first and second angles differ by less than 5°
in magnitude. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 21, 22, 23)
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17. A method of producing a magnetic-field sensor, comprising:
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providing a first magnetic body comprising a first magnetization direction, and a second magnetic body comprising a second magnetization direction, the first and second magnetization directions differing, a first spatial area and a second spatial area with regard to the first magnetic body and the second magnetic body existing, so that in the first spatial area, a magnetic flux density is caused by the first magnetic body and the second magnetic body with regard to a predetermined spatial direction, the magnetic flux density being within a first flux density range, and so that in the second spatial area, a magnetic flux density is caused by the first magnetic body and the second magnetic body with regard to the predetermined spatial direction, the magnetic flux density being within a second flux density range; and providing a magnetic-field sensor arrangement comprising a first and a second magnetic-field sensor element in a sensor plane and attaching the magnetic-field sensor arrangement to the overall magnetic arrangement, so that the first magnetic-field sensor element is arranged in the first spatial area, and the second magnetic-field sensor element is arranged in the second spatial area, and so that the first magnetization direction forms a first angle with a symmetry line, the symmetry line being perpendicular to the sensor plane, and the second magnetization direction forms a second angle with the symmetry line, wherein the first and second angles differ by less than 5°
in magnitude. - View Dependent Claims (18, 19)
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20. A non-transitory computer readable digital storage medium having a computer program stored thereon, the computer program comprising a program code for performing, when running on a computer, a method of producing a magnetic-field sensor, the method comprising:
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providing a first magnetic body comprising a first magnetization direction, and a second magnetic body comprising a second magnetization direction, the first and second magnetization directions differing, a first spatial area and a second spatial area with regard to the first magnetic body and the second magnetic body existing, so that in the first spatial area, a magnetic flux density is caused by the first magnetic body and the second magnetic body with regard to a predetermined spatial direction, the magnetic flux density being within a first flux density range, and so that in the second spatial area, a magnetic flux density is caused by the first magnetic body and the second magnetic body with regard to the predetermined spatial direction, the magnetic flux density being within a second flux density range; and providing a magnetic-field sensor arrangement comprising a first and a second magnetic-field sensor element in a sensor plane and attaching the magnetic-field sensor arrangement to the overall magnetic arrangement, so that the first magnetic-field sensor element is arranged in the first spatial area, and the second magnetic-field sensor element is arranged in the second spatial area, and so that the first magnetization direction forms a first angle with a symmetry line, the symmetry line being perpendicular to the sensor plane, and the second magnetization direction forms a second angle with the symmetry line, wherein the first and second angle differ by less than 5°
in magnitude,when the program runs on a processor.
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Specification