• Patent Title: External magnetic field angle determination
  • Application No.: US12598500
    Application Date: 2008-04-24
  • Publication No.: US10209321B2
    Publication Date: 2019-02-19
  • Inventor: Stefan Butzmann
  • Applicant: Stefan Butzmann
  • Applicant Address: NL Eindhoven
  • Assignee: NXP B.V.
  • Current Assignee: NXP B.V.
  • Current Assignee Address: NL Eindhoven
  • Agent Rajeev Madnawat
  • Priority: EP07109055 20070529
  • International Application: PCT/IB2008/051593 WO 20080424
  • International Announcement: WO2008/146184 WO 20081204
  • Main IPC: G01R33/09
  • IPC: G01R33/09 B82Y25/00 G01C17/30 G01D5/14
External magnetic field angle determination
Abstract:
Magnetoresistive sensors are commonly used for angular detection in many automotive applications. According to an exemplary embodiment of the present invention, a sensor is provided in which a first half-bridge has magnetoresistive resistors with barber-pole stripes and in which a second half-bridge has magnetoresistive resistors without barber-pole stripes. One of the resistors without barber-pole stripes is rotated with respect to the other three resistors by 90°. This may provide for an improved angle determination with reduced angular errors due to offset.
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