Transmitting magnetic field through metal chassis using fractal surfaces
First Claim
Patent Images
1. An apparatus comprising:
- one or more processors;
a memory coupled to the one or more processors;
a near field communications (NFC) antenna coupled to the one or more processors wherein the NFC antenna is integrated underneath a metal chassis of the apparatus; and
at least one fractal slot constructed on the metal chassis, the at least one fractal slot has no-self loop fractal space filling curve template and is tiled with another fractal slot to cover an area defined at least by outside parameter of the NFC antenna, wherein the metal chassis includes an embedded or attached conductive coating, the conductive coating is located between the metal chassis and the NFC antenna.
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Abstract
Described herein are techniques related one or more systems, apparatuses, methods, etc. for reducing induced currents in a apparatus chassis. For example, a fractal slot is constructed in the apparatus chassis to reduce the induced currents, and enhance passage of magnetic fields through the apparatus chassis. In this example, the fractal slot may include a no-self loop fractal space filling curve shape to provide high impedance to the induced currents.
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Citations
29 Claims
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1. An apparatus comprising:
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one or more processors; a memory coupled to the one or more processors; a near field communications (NFC) antenna coupled to the one or more processors wherein the NFC antenna is integrated underneath a metal chassis of the apparatus; and at least one fractal slot constructed on the metal chassis, the at least one fractal slot has no-self loop fractal space filling curve template and is tiled with another fractal slot to cover an area defined at least by outside parameter of the NFC antenna, wherein the metal chassis includes an embedded or attached conductive coating, the conductive coating is located between the metal chassis and the NFC antenna. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An apparatus chassis comprising:
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a near field communications (NFC) antenna integrated underneath the apparatus chassis; a fractal slot to include a no-self loop fractal space filling curve shape, wherein the fractal slot is tiled with another fractal slot to cover an area defined at least by an outside loop of the NFC antenna that is integrated underneath the fractal slots; and a conductive coating that is integrated between the NFC antenna and the tiled fractal slots. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A method of reducing induced currents in an apparatus chassis comprising:
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providing a fractal slot to include a no-self loop fractal space filling curve shape, the fractal slot is tiled with another fractal slot to cover an area defined at least by outside loop of a near field communications (NFC) antenna that is integrated underneath the fractal slots and in the apparatus chassis, wherein the apparatus chassis includes an embedded or attached conductive coating, the conductive coating is integrated between the fractal slots and the NFC antenna; radiating an electromagnetic field by the NFC antenna; and providing high impedance to currents induced by the electromagnetic field. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29)
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Specification