Kejik, PavelChiesi, LaurentJanossy, BalazsPopovic, Radivoje2011-02-102011-02-101998https://infoscience.epfl.ch/handle/20.500.14299/64165A new compact 2D planar fluxgate sensor using a ferromagnetic amorphous metal core is described. The fluxgate sensor consists of two orthogonal planar coils and an amorphous magnetic ring core mounted on a PCB substrate. Each planar coil is used alternatively as excitation or as pick-up coil. An electronic interface drives alternatively the two coils and performs a feedback on each sensing coil in order to compensate for the measured magnetic field. The sensing element has a magnetic detectivity of 40nT for an excitation frequency of 10kHz and a 160mApeak driving current.text::conference output::conference paper not in proceedings