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Planar transmitter with a layered structure

  • US 9,508,484 B2
  • Filed: 02/18/2013
  • Issued: 11/29/2016
  • Est. Priority Date: 02/22/2012
  • Status: Active Grant
First Claim
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1. A planar transmitter having:

  • a layer structure having a plurality of circuits, wherein a first circuit and at least a second circuit are galvanically separated from one another by means of at least one first insulation layer,a magnetic core of a non-closed structure, in which a first magnetic layer and a second magnetic layer are separated from one another and are assigned to different potential groups, wherein the first magnetic layer delimits a first side of the layer structure, and the second magnetic layer delimits a second side of the layer structure,wherein the first circuit borders on the first magnetic layer, and the second circuit borders on the second magnetic layer,wherein at least two conductive layers form one or more windings of a coil, in that the conductive layers are connected with an electrical connection,wherein the first circuit and the second circuit have a minimum insulation distance T0 from one another,wherein the minimum insulation distance makes at least one of galvanic separation between the first circuit and the second circuit and, intrinsically safe galvanic separation, available,wherein the distance between the first circuit and the second circuit does not go below the minimum insulation distance T0 at any geometrical location,wherein a total insulation thickness between the first magnetic layer and the second magnetic layer amounts to (N−

    1)×

    T0, and wherein T0 is the minimum insulation distance and N is the number of circuits safely separated from one another galvanically, andwherein, at a required minimum insulation distance T0 of the first insulation layer of about 1 mm, the total thickness of the transmitter does not amount to more than about 4 mm.

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