Dual-mode wireless power transfer apparatus
First Claim
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1. A wireless power receiver, comprising:
- a circuit, including;
a coil circuit including a first coil to receive power wirelessly at a first resonant frequency;
a second coil to receive a signal wirelessly at a second resonant frequency; and
a passive network comprising a plurality of capacitors coupled to the first coil and the second coil, the plurality of capacitors comprising a first capacitor connected in series with the second coil, wherein the coil circuit is coupled in parallel with a series combination of the second coil and the first capacitor,wherein the circuit passively resonates at both the first resonant frequency and the second resonant frequency, the second resonant frequency being higher than the first resonant frequency, to wirelessly receive the power or the signal to provide to a rectifier electrically connected to the passive network.
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Abstract
A dual-mode receiver is provided that includes an electromagnetic resonator having one or more inductive elements that are arranged to form a receiver coil and a network of passive components arranged to form a matching network. The electromagnetic resonator includes a first selective frequency defined in a low frequency range and a second selective frequency defined in a high frequency range allowing for a rectification circuit to operate in both the high frequency range and low frequency range making maximum use of active circuits.
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Citations
9 Claims
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1. A wireless power receiver, comprising:
a circuit, including; a coil circuit including a first coil to receive power wirelessly at a first resonant frequency; a second coil to receive a signal wirelessly at a second resonant frequency; and a passive network comprising a plurality of capacitors coupled to the first coil and the second coil, the plurality of capacitors comprising a first capacitor connected in series with the second coil, wherein the coil circuit is coupled in parallel with a series combination of the second coil and the first capacitor, wherein the circuit passively resonates at both the first resonant frequency and the second resonant frequency, the second resonant frequency being higher than the first resonant frequency, to wirelessly receive the power or the signal to provide to a rectifier electrically connected to the passive network. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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