Magnetic field compensation device

A magnetic field compensation device comprising:

• a first bar-shaped flux concentrator with a longitudinal axis formed in an x-direction and with a first head end,
• a second bar-shaped flux concentrator with a longitudinal axis formed in the x-direction and with a second head end, wherein the first flux concentrator and the second flux concentrator are separated from one another in a y-direction, and the longitudinal axis of the first flux concentrator and the longitudinal axis of the second flux concentrator are arranged to be substantially parallel to one another,
• a magnetic field sensor,
• a compensating coil formed around the first flux concentrator and/or around the second flux concentrator, and
• a control unit, wherein the control unit is in an operative electrical connection with the magnetic field sensor and the compensating coil, and the control unit is equipped to control a compensating current through the compensating coil using a measured signal from the magnetic field sensor in such a manner that, for an external magnetic field formed in the x-direction at the location of the magnetic field sensor, the magnetic field is substantially compensated,
• wherein, in the second flux concentrator, the magnetic field is formed in the direction of the x-axis, and the magnetic field sensor is located at the first head end of the first flux concentrator and not at the second head end of the second flux concentrator, and the magnetic field sensor and the first flux concentrator and the second flux concentrator and the compensating coil and the control unit are each predominantly integrated into a semiconductor substrate.