Multiple-orientation wireless charging
First Claim
1. An apparatus comprising:
- an antenna configured to couple energy wirelessly to a charging device, the antenna comprising;
a first trace, when driven, configured to generate one or more first magnetic field components in a first direction; and
a second trace, when driven, configured to generate one or more second magnetic field components in a second direction, the one or more first magnetic field components and the one or more second magnetic field components resulting in a magnetic field in a third direction;
a communication interface configured to receive, from the charging device, a feedback indicating a field coupling between an antenna of the charging device and the magnetic field; and
power signal (PS) circuitry configured to vary a driving ratio between the first trace and the second trace to adjust the third direction of the magnetic field responsive to the feedback indicating the field coupling between the antenna of the charging device and the magnetic field.
4 Assignments
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Accused Products
Abstract
A system includes a charging station and one or more receiving devices receiving wireless power from the charging station. The charging station includes an orientation adaptable antenna (OAA). The OAA may generate a magnetic field component parallel to the plane of the OAA to charge devices oriented at 90 degrees with respect to the OAA. The OAA may generate a magnetic field along different directions within the plane parallel to the OAA. The OAA may be able to adjust the direction of the field to couple to devices with antennas in different orientations. The OAA may further produce a magnetic field normal to the plane of the OAA. The OAA may adjust the relative strengths the various directional components of the magnetic field to align the field normal to the antennas of the receiving devices in up to three dimensions, simultaneously charge receiving devices in different orientations, or both.
4 Citations
23 Claims
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1. An apparatus comprising:
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an antenna configured to couple energy wirelessly to a charging device, the antenna comprising; a first trace, when driven, configured to generate one or more first magnetic field components in a first direction; and a second trace, when driven, configured to generate one or more second magnetic field components in a second direction, the one or more first magnetic field components and the one or more second magnetic field components resulting in a magnetic field in a third direction; a communication interface configured to receive, from the charging device, a feedback indicating a field coupling between an antenna of the charging device and the magnetic field; and power signal (PS) circuitry configured to vary a driving ratio between the first trace and the second trace to adjust the third direction of the magnetic field responsive to the feedback indicating the field coupling between the antenna of the charging device and the magnetic field. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A device comprising:
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power signal (PS) circuitry configured to wirelessly transfer energy to a charging device; and an antenna comprising a plane of traces, the antenna configured to, when driven by the PS circuitry; generate a first magnetic field component parallel to the plane of traces; and generate a second magnetic field component parallel to the plane of traces, wherein the second magnetic field component is oriented in a direction different from a direction of the first magnetic field component. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A system comprising:
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power signal (PS) circuitry configured to wirelessly transfer energy to one or more charging devices; and an antenna comprising a plane of traces, the antenna configured to, when driven by the PS circuitry; generate a first magnetic field component parallel to the plane of traces; generate a second magnetic field component parallel to the plane of traces; and generate a third magnetic field component normal to the plane of traces. - View Dependent Claims (18, 19, 20, 21, 22, 23)
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Specification