Magnetic sensor with low noise and a high bandwidth

A magnetic field sensor system comprising:

• a first magnetic field sensor;
• one or more second magnetic field sensors;
• and
• an amplifier;
• wherein the first magnetic field sensor and one or more of the second magnetic field sensors is a device selected from the group consisting of Hall effect sensors, magnetoresistive sensors in, preferably Wheatstone's, bridge circuit, induction loops or induction coils or any combination thereof;
• wherein the magnetic field sensor system—in the presence of an induction loop or an induction coil as part of the magnetic field sensor system—additionally comprises an integrator or a low-pass filter for compensating a frequency dependence of a voltage induced in the induction loop or the induction coil;
• and all magnetic field sensors are connected in series, so that the respective output signals can be added-up to a common input signal of the amplifier.