“…For example, the inductive sensor is robust and highly resistant to harsh environment, but at the same time, it tends to be bulky and more expensive as compared to Hall and MR sensors. Hall sensors, which are currently dominant in automotive applications [4][5] , are low cost, but they have a moderate sensitivity at low field and a relatively large thermal drift. The MR sensors, including anisotropic magnetoresistance (AMR) sensor [6][7][8] , giant magnetoresistance (GMR) sensor and tunneling magnetoresistance (TMR) sensor [9][10] , fill up nicely the gap between Hall and inductive sensors in terms of field sensitivity, detection accuracy and cost.…”