Planar coil arrangement for a magnetic induction impedance measurement apparatus
First Claim
1. A planar coil arrangement for a magnetic induction impedance measurement apparatus, the planar coil arrangement comprising:
- an excitation coil configured for generating a magnetic excitation field in an object, anda detection coil configured for detecting a magnetic response field generated in response to the magnetic excitation field inducing a current in the object, wherein the excitation coil and the detection coil are concentrically arranged relative to one another around a common center;
the windings of the detection coil are arranged relative to the excitation coil such that currents induced in response to the magnetic excitation field comprise opposite signs, but similar amplitudes.
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Abstract
A planar coil arrangement (400) for a magnetic induction impedance measurement apparatus comprises an excitation coil (102) configured for generating a magnetic excitation field in an object, and a detection coil (404) configured for detecting a magnetic response field generated in response to the magnetic excitation field inducing a current in the object. In order to minimize an effect of the magnetic excitation field in the detection coil (404), the detection coil (404) is radially symmetrical shaped with respect to the excitation coil (102) and is arranged relative to the excitation coil (102) such that the magnetic excitation field is minimized in the detection coil (404).
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Citations
14 Claims
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1. A planar coil arrangement for a magnetic induction impedance measurement apparatus, the planar coil arrangement comprising:
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an excitation coil configured for generating a magnetic excitation field in an object, and a detection coil configured for detecting a magnetic response field generated in response to the magnetic excitation field inducing a current in the object, wherein the excitation coil and the detection coil are concentrically arranged relative to one another around a common center;
the windings of the detection coil are arranged relative to the excitation coil such that currents induced in response to the magnetic excitation field comprise opposite signs, but similar amplitudes. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method for magnetic induction impedance measurement, the method comprising:
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generating a magnetic excitation field in a person by an excitation coil, detecting a magnetic response field by a detection coil, wherein the magnetic response field is generated in response to the magnetic excitation field inducing a current in the person, wherein the excitation coil and the detection coil are concentrically arranged relative to one another around a common center;
the windings of the detection coil are arranged relative to the excitation coil such that currents induced in response to the magnetic excitation field comprise opposite signs, but similar amplitudes, anddetermining a physiological parameter of the person based on the detected magnetic response field.
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Specification