INTEGRATED ANTENNAS FOR NEAR FIELD COUPLING INTEGRATION
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Accused Products
Abstract
Described herein are techniques related to near field coupling and wireless power transfers. In an implementation, a portable device may include full metallic chassis devices. The full metallic chassis devices may include a keyboard and/or trackpad that include a plastic keycap. The plastic keycap may integrate a booster component to increase near field communications (NFC) range of a coil antenna that is integrated onto a surface plane above a circuit board of a switch that is connected to the plastic keycap. In an implementation, a ferrite material is inserted between the coil antenna and the circuit board to protect the coil antenna from Eddy currents that may be induced on a metallic chassis that lie underneath the circuit board.
27 Citations
66 Claims
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1-33. -33. (canceled)
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34. A portable device comprising:
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one or more processors; a near field communications (NFC) antenna configured to the processors comprising; a coil antenna that includes at least one exposed coil antenna loop, wherein a cutout at an inner core of the at least one exposed coil antenna loop allows the coil antenna to be integrated onto a surface plane above a circuit board that includes a switch of the plastic keycap, the inner core being aligned with a center point of the multiple resonant coils; and a ferrite material that provides isolation of the coil antenna from metallic components underneath the coil antenna, wherein the ferrite material is inserted between the coil antenna and the circuit board; and a NFC module configured to the NFC antenna to provide tuning adjustment. - View Dependent Claims (35, 36, 37, 38, 39, 40, 41, 42, 43, 44)
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45. A near field communications (NFC) antenna comprising:
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a coil antenna that includes at least one exposed coil antenna loop, wherein a cutout at an inner core of the at least one exposed coil antenna loop allows the coil antenna to be integrated onto a metal-free space clearance underneath a plastic keycap of a keyboard and/or trackpad of a device; and a ferrite material that guides magnetic flux of the coil antenna. - View Dependent Claims (46, 47, 48, 49, 50, 51, 52, 53, 54, 55)
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56. A method of integrating a near field communications (NFC) antenna into a host portable device comprising:
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constructing an inner core cutout in a coil antenna that includes at least one exposed coil antenna loop; installing the coil antenna by utilizing a metal-free space clearance underneath the plastic keycap, wherein the inner core cutout allows the installation of the coil antenna underneath the plastic keycap metal-free space clearance; and installing a ferrite material that guides magnetic flux of the coil antenna. - View Dependent Claims (57, 58, 59, 60, 61, 62, 63, 64, 65, 66)
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Specification