SYSTEM AND METHOD FOR ADJUSTING A RESPONSE IN A WIRELESS POWER RECEIVER
First Claim
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1. A wireless power receiver, comprising:
- a receive antenna configured to generate charging current in response to a primary magnetic field; and
a field adjustment element located between the receive antenna and a metal structure of the wireless power receiver, the field adjustment element configured to adjust an amount of a secondary magnetic field that may reach the receive antenna.
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Abstract
A wireless power receiver includes a receive antenna configured to generate charging current in response to a primary magnetic field, and a field adjustment element located between the receive antenna and a metal structure of the wireless power receiver, the field adjustment element configured to adjust an amount of a secondary magnetic field that may reach the receive antenna.
11 Citations
28 Claims
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1. A wireless power receiver, comprising:
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a receive antenna configured to generate charging current in response to a primary magnetic field; and a field adjustment element located between the receive antenna and a metal structure of the wireless power receiver, the field adjustment element configured to adjust an amount of a secondary magnetic field that may reach the receive antenna. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method for adjusting a response of a receive antenna in a wireless power receiver, comprising:
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generating a charging current in response to a primary magnetic field; and limiting an amount of a secondary magnetic field that reaches the receive antenna in the wireless power receiver. - View Dependent Claims (14, 15, 16, 17)
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18. A wireless power receiver, comprising:
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a receive antenna configured to generate charging current in response to a primary magnetic field, wherein a secondary magnetic field is generated by an eddy current in the wireless power receiver; and a field adjustment element located between the receive antenna and a metal structure of the wireless power receiver, the field adjustment element configured to adjust an amount of the secondary magnetic field, wherein the field adjustment element is chosen from the group consisting of a field blocking element configured to reduce a strength of the secondary magnetic field in a direction toward the receive antenna, a field blocking element configured to reduce a strength of the primary magnetic field in a direction toward the metal structure of the wireless power receiver such that the secondary magnetic field is substantially reduced, and a field altering element configured to generate a third magnetic field, the third magnetic field configured to reduce a strength of the secondary magnetic field in a direction toward the receive antenna. - View Dependent Claims (19, 20, 21, 22, 23)
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24. A device for wireless power transfer, comprising:
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means for generating a charging current in response to a primary magnetic field; and means for limiting an amount of a secondary magnetic field that reaches the means for generating the charging current. - View Dependent Claims (25, 26, 27, 28)
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Specification