Systems and methods for forward link communication in wireless power systems
First Claim
1. A wireless charging device for providing wireless power to a receiving device, the wireless charging device comprising:
- a primary transmit antenna configured to generate a wireless power field;
a parasitic antenna configured to adjust a coupling between the primary transmit antenna and the receiving device;
a switching element electrically coupled to the parasitic antenna and configured to enable or disable the parasitic antenna; and
a controller configured to control the switching element electrically coupled to the parasitic antenna to adjust the coupling according to a pattern detectable by the receiving device, wherein the controller performs communication with the receiving device by the adjustment of the parasitic antenna.
1 Assignment
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Accused Products
Abstract
This disclosure provides systems, methods and apparatus for forward link communication in wireless power systems. One aspect of the disclosure provides a wireless charging device for providing wireless power to a receiving device. The wireless charging device includes a primary transmit antenna configured to generate a wireless power field. The device further includes a parasitic antenna configured to selectively adjust a coupling between the primary transmit antenna and the receiving device. The device further includes a controller configured to control the selective adjustment of the parasitic antenna so as to communicate with the receiving device.
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Citations
34 Claims
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1. A wireless charging device for providing wireless power to a receiving device, the wireless charging device comprising:
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a primary transmit antenna configured to generate a wireless power field; a parasitic antenna configured to adjust a coupling between the primary transmit antenna and the receiving device; a switching element electrically coupled to the parasitic antenna and configured to enable or disable the parasitic antenna; and a controller configured to control the switching element electrically coupled to the parasitic antenna to adjust the coupling according to a pattern detectable by the receiving device, wherein the controller performs communication with the receiving device by the adjustment of the parasitic antenna. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of providing wireless power in a wireless charging device to a receiving device, comprising:
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generating, at a primary transmit antenna, a wireless power field; and controlling a switching element electrically coupled to a parasitic antenna to adjust a coupling between the primary transmit antenna and the receiving device, the coupling adjusted according to a pattern detectable by the receiving device wherein the wireless charging device performs communication with the receiving device by the adjustment of the parasitic antenna. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. An apparatus for providing wireless power to a receiving device, comprising:
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means for generating a wireless power field; means for adjusting a coupling between the generating means and the receiving device, the adjusting means being parasitic to and galvanically isolated from the generating means; means for switching electrically coupled to the adjusting means, the switching means configured to enable or disable the adjusting means; and means for controlling the switching means electrically coupled to the adjusting means to adjust the coupling between the generating means and the receiving device, the coupling adjusted according to a pattern detectable by the receiving device, wherein the controlling means performs communication with the receiving device by the adjustment of the adjusting means. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30)
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31. A non-transitory computer-readable medium comprising code that, when executed, causes an apparatus to:
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generate, at a primary transmit antenna, a wireless power field; control a switching element electrically coupled to a parasitic antenna to adjust a coupling between the primary transmit antenna and a receiving device, the coupling adjusted according to a pattern detectable by the receiving device, wherein the apparatus performs communication with the receiving device by the adjustment of the parasitic antenna. - View Dependent Claims (32, 33, 34)
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Specification