Method, apparatus and computer program for determining information on a position of an object, the object emitting a magnetic field
AssigneeFraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
InventorsRafael PSIUK, Markus HARTMANN, Tobias DRAEGER, Jørn ESKILDSEN
Life of this patent
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Abstract
A method for determining information on a position of an object, the object emitting a magnetic field in response to an exciting electromagnetic field comprises monitoring (100) a receive signal of at least one loop antenna, the receive signal having a contribution caused by the emitted magnetic field; determining a first quadrature component (102) of the receive signal; and determining the information on the position of the object (104) based on the first quadrature component.
Claims20
A method for determining information on a position of an object, the object emitting a magnetic field in response to an exciting electromagnetic field, comprising:
- monitoring a receive signal of at least one loop antenna, the receive signal having a contribution caused by the emitted magnetic field;
- determining a first quadrature component of the receive signal;
- and
- determining the information on the position of the object based on the first quadrature component.
A signal evaluation processor for determining information on a position of an object, comprising:
- a signal input configured to monitor a receive signal, the receive signal being received by at least one loop antenna and having a contribution caused by an emitted magnetic field, the emitted magnetic field being emitted by the object in response to an exciting electromagnetic field;
- a signal processing circuit configured to determine a first quadrature component of the receive signal;
- and
- a signal evaluation circuit configured to determine the information on the position of the object based on the first quadrature component.
Dependencies are inferred from the claim text.