MAGNETOMETER WITH ANGLED SET/RESET COIL
First Claim
Patent Images
1. A magnetometer, comprising:
- a plurality of sensing strips disposed on a planar substrate, each sensing strip having a long axis; and
a planar set/reset coil disposed on the planar substrate parallel and adjacent to the plurality of sensing strips,wherein a first coil portion of the set/reset coil is oriented with respect to a first portion of a first sensing strip at a first angle +α
1, where 0°
<
α
1<
90°
, with respect to a virtual line perpendicular to the long axis of the first sensing strip.
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Abstract
A magnetometer with a set/reset coil having portions that cross portions of sensing strips at an angle in order to create a magnetic field in the sensing strip that is at an angle with respect to the easy axis of magnetization of the sensing strip. Each sensing strip may have a portion having a magnetic field created therein that is different from a magnetic field created in another portion of the same sensing strip. As a result, a lower set/reset coil current is needed to initialize the magnetometer.
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Citations
20 Claims
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1. A magnetometer, comprising:
-
a plurality of sensing strips disposed on a planar substrate, each sensing strip having a long axis; and a planar set/reset coil disposed on the planar substrate parallel and adjacent to the plurality of sensing strips, wherein a first coil portion of the set/reset coil is oriented with respect to a first portion of a first sensing strip at a first angle +α
1, where 0°
<
α
1<
90°
, with respect to a virtual line perpendicular to the long axis of the first sensing strip. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A magnetometer, comprising:
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a first plurality of sensing strips disposed on a planar substrate, each sensing strip having a long axis and first, second and third portions, arranged adjacent to one another with respective long axes substantially parallel to one another; and a planar set/reset coil, disposed on the planar substrate parallel and adjacent to the first plurality of sensing strips, having a plurality of undulating coil legs, wherein a first coil leg is oriented to cross a respective first portion of each sensing strip in the first plurality of sensing strips at angles +α
1, −
α
2, alternatingly with respect to adjacent sensing strips, where 0°
<
(α
1=α
2)<
90°
with respect to a virtual line perpendicular to the long axis of each sensing strip. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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Specification