Patent ID: 9733107
Date: 2017-08-15
CPC Classifications: G01B,G01D,G01R,H04L

Claim:
1. A method of determining a measured magnetic field angle having 360-degree uniqueness comprising: providing an anisotropic magnetoresistive (AMR) angle sensor comprising first, second and third AMR sensor element arrangements, wherein AMR layers in the first AMR sensor element arrangement are exchange biased in a direction that is rotated with respect to a direction of exchange bias of AMR layers in the third AMR sensor element arrangement; measuring a first magnetic field angle by the second AMR sensor element arrangement; measuring second and third magnetic field angles by the first and third AMR sensor element arrangement, respectively; determining a first difference between the first and second magnetic field angles and a second difference between the first and third magnetic field angles; determining an arctan (ATAN) of a ratio of the first difference to the second difference; and determining a measured magnetic field angle having 360-degree uniqueness from the ATAN.