Patent ID: 7414399

Claim:
Micromagnetometer of the fluxgate type made of thin layers, including: a support having a main plane, a magnetic circuit fitted with at least one first magnetic core of a main direction and at least one second magnetic core parallel to the first core, at least one excitation coil including a succession of conductive elements connected in series, and means for applying an excitation signal to said series of conductive elements, wherein the excitation coil includes, flat conductive zones parallel to each other extending in a direction that forms a non-zero angle with said main direction and located respectively in a plane parallel to the main plane of the support, a first plurality of flat conductive zones being located opposite the first core, a second plurality of flat conductive zones being located opposite the second core, at least some conductive elements of the excitation coil including, at least one first flat conductive zone belonging to said second plurality of conductive zones connected to a second flat conductive zone belonging to said first plurality of flat conductive zones and located in the same plane orthogonal to the main plane of the support as said second flat conductive zone, the conductive elements of the excitation coil including a conductive part forming a closed contour surrounding the first and second cores, and including said first flat conductive zone and said second flat conductive zone.