Patent ID: 9739842
Date: 2017-08-22
CPC Classifications: G01R

Claim:
1. A magnetic field sensor comprising: a sensor bridge having a first leg and a second leg; a first magnetoresistive sense element formed in said first leg and located in a plane of said magnetic field sensor, said first magnetoresistive sense element including a first pinned layer and a first sense layer, said first sense layer having a first sense magnetization oriented in a first <hkl> direction, wherein h, k, and l are Miller indices all of which are non-zero and <hkl> represents a family of directions; a second magnetoresistive sense element formed in said second leg and located in said plane of said magnetic field sensor, said second magnetoresistive sense element including a second pinned layer and a second sense layer, said first and second magnetoresistive sense elements being sensitive to an external magnetic field along a sensing direction, wherein each of said first and second pinned layers has a reference magnetization oriented substantially parallel to said plane and said second sense layer has a second sense magnetization; and a permanent magnet layer positioned proximate said second magnetoresistive sense element, wherein in the absence of said external magnetic field, said permanent magnet layer magnetically biases said second sense magnetization in a second <hkl> direction relative to said first <hkl> direction, wherein one of said h, k, and l of said second <hkl> direction is a negative value of a corresponding one of said h, k, and l of said first <hkl> direction.