Patent ID: 9116198
Filing Date: 2015-08-25
Classification: G01R

Abstract:
1. A multi-axis magnetic field sensor comprising: a substrate; a first plurality of magnetoresistive sensing units disposed on the substrate and adapted to sense a magnetic field in an x-direction; a second plurality of magnetoresistive sensing units disposed on the substrate and adapted to sense a magnetic field in a y-direction that is orthogonal to the x-direction; and a magnetic concentrator having an inner portion and an outer portion, the concentrator disposed on the substrate so that at least one sensing unit from each of the first and the second pluralities of sensing devices is disposed adjacent to, and within, the inner portion and at least one sensing unit from each of the first and the second pluralities of sensing devices is disposed adjacent to, and within, the outer portion; wherein the magnetic concentrator is operative to convert a magnetic field in a z-direction that is orthogonal to both the x-direction and the y-direction into a magnetic field in an xy-plane.