Multiple-Orientation Wireless Charging
First Claim
1. A system comprising:
- 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 the traces and oriented in a direction different from that of the first component, the first magnetic field component stronger than the second magnetic field component.
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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.
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Citations
20 Claims
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1. A system 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 the traces and oriented in a direction different from that of the first component, the first magnetic field component stronger than the second magnetic field component. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method comprising:
coupling energy wirelessly from a charging station (CS) to a charging device by; driving a first trace of a CS antenna to generate first and second field components of a magnetic field, the first and second field components parallel to the CS antenna; and driving a second trace of the CS antenna to adjust a signal ratio between the first and second field components to control coupling between the magnetic field and a charging device antenna. - View Dependent Claims (16, 17)
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18. A system comprising:
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an antenna configured to couple energy wirelessly to a charging device, the antenna comprising; a first trace configured to, when driven; emit a first magnetic field component along a first direction; and emit a second magnetic field component along a second direction, the second direction orthogonal to the first; and a second trace configured to, when driven, emit a third magnetic field component that cancels a portion of the second magnetic field component to align a total magnetic field along the first direction; and power signal (PS) circuitry coupled to the antenna, the PS circuitry configured to drive the antenna to wirelessly charge the charging device. - View Dependent Claims (19, 20)
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Specification