Patent ID: 7358723
Filing Date: 2008-04-15
Classification: G01D,G01R

Abstract:
1. A magnetoresistive sensor for operation with a magnetized encoder that is equipped with a zone with magnetic north and south poles arranged alternately along a direction of motion, the sensor comprising a Wheatstone bridge configuration with wherein each of the bridge arms includes an ohmic resistance element with a resistance-value dependence on the magnetic field strength of a magnetic field influencing the ohmic resistance element in accordance with a defined characteristic, the resistance-values of each of the ohmic resistance elements varying in phase with one another, characterized in that the characteristics of the ohmic resistance elements in the first and fourth bridge arms are selected to be at least essentially matching with each other and significantly different from the characteristics, selected to be at least essentially matching with each other, of the ohmic resistance elements in the second and third bridge arms.