PASSIVE RECEIVERS FOR WIRELESS POWER TRANSMISSION
First Claim
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1. A wireless power transmission receiver, comprising:
- a receive antenna including a parallel resonator configured to resonate in response to a magnetic near-field and couple wireless power therefrom; and
a passive rectifier circuit coupled to the parallel resonator, the passive rectifier circuit configured to transform a load impedance to the parallel resonator.
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Abstract
Exemplary embodiments are directed to wireless power transfer. A wireless power transmission receiver includes a receive antenna including a parallel resonator configured to resonate in response to a magnetic near-field and couple wireless power therefrom. The receiver further includes a passive rectifier circuit coupled to the parallel resonator. The passive rectifier circuit is configured to transform a load impedance to the parallel resonator.
498 Citations
23 Claims
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1. A wireless power transmission receiver, comprising:
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a receive antenna including a parallel resonator configured to resonate in response to a magnetic near-field and couple wireless power therefrom; and a passive rectifier circuit coupled to the parallel resonator, the passive rectifier circuit configured to transform a load impedance to the parallel resonator. - View Dependent Claims (2, 3, 4, 5, 6, 7, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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8. The receiver of claim 8, wherein the passive rectifier circuit includes high frequency choke and the parallel resonator includes an inductive loop, the high frequency choke is coupled to the inductive loop to DC ground the inductive loop.
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18. An electronic device, comprising a wireless power transmission receiver, including:
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a receive antenna including a parallel resonator configured to resonate in response to a magnetic near-field and couple wireless power therefrom; and a passive rectifier circuit coupled to the parallel resonator, the passive rectifier circuit configured to transform a load impedance to the parallel resonator.
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19. A method for receiving wireless power, comprising:
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transforming a load impedance to a wireless power receiver resonator to improve efficiency of wireless power transmission; resonating at the receiver resonator in response to a magnetic near-field; and rectifying power extracted from the resonating receiver resonator. - View Dependent Claims (20, 21, 22)
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23. A wireless power transmission receiver, comprising:
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means for transforming a load impedance to a wireless power receiver resonator to improve efficiency of wireless power transmission; means for resonating at the receiver resonator in response to a magnetic near-field; and means for rectifying power extracted from the resonating receiver resonator.
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Specification