Concurrent wireless power transfer and data communication
First Claim
1. A system to enable both wireless power transfer and data communication by use of a same transmit signal to a mobile device, wherein the system comprises:
- a constraint encoder configured to;
receive data bits for communication to the mobile device;
specify, based on the received data bits, one or more signal constraints that change at least one of;
frequency, phase, or amplitude components of a transmit signal to cause the transmit signal to maintain at least a specified peak-to-power-average ratio (PAPR) during a particular time interval; and
generate a vector based on the received data bits and the one or more specified signal constraints; and
a signal generator communicatively coupled to the constraint encoder and configured to generate the transmit signal based on the generated vector.
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Accused Products
Abstract
Systems and methods for concurrent wireless power transfer and data transmission are provided. A constraint encoder receives data bits for communication to a mobile device and encodes the data bits onto a transmit signal. The constraint encoder specifies signal constraints that cause the transmit signal to have a peak-to-power-average ratio (PAPR) during a given time interval sufficient to provide wireless power transfer to the mobile device. The system also includes a signal generator coupled to the constraint encoder. The signal generator generates the transmit signal according to the signal constraints. The system further includes a transmitter coil that is coupled to the signal generator. The transmitter coil is configured to transmit the transmit signal that has been encoded with the data bits to receiver coils of the mobile device. The encoded transmit signal is able to provide wireless power transfer and the encoded data bits to the mobile device.
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Citations
23 Claims
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1. A system to enable both wireless power transfer and data communication by use of a same transmit signal to a mobile device, wherein the system comprises:
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a constraint encoder configured to; receive data bits for communication to the mobile device; specify, based on the received data bits, one or more signal constraints that change at least one of;
frequency, phase, or amplitude components of a transmit signal to cause the transmit signal to maintain at least a specified peak-to-power-average ratio (PAPR) during a particular time interval; andgenerate a vector based on the received data bits and the one or more specified signal constraints; and a signal generator communicatively coupled to the constraint encoder and configured to generate the transmit signal based on the generated vector. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method to enable both wireless power transfer and data communication using a same transmit signal to a mobile device, the method comprising:
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receiving data bits for communication to the mobile device; specifying, based on the received data bits, one or more signal constraints that change at least one of;
frequency, phase, or amplitude components of a transmit signal to cause the transmit signal to maintain at least a specified peak-to-power-average ratio (PAPR) during a particular time interval;generating a vector based on the received data bits and the one or more specified signal constraints; generating the transmit signal based on generated vector; and transmitting the generated transmit signal to the mobile device. - View Dependent Claims (15, 16, 17, 18)
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19. A system to enable a mobile device to receive both wireless power transfer and data communication from a same received transmit signal, the system comprising:
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an inductor, implemented in the mobile device, that is configured to communicatively couple with another inductor to receive a transmit signal generated by the another inductor; a down-converter communicatively coupled to the inductor and configured to down-convert the received transmit signal; an analog-to-digital (ADC) converter communicatively coupled to the down-converter and configured to convert the down-converted signal to a digital signal; a discrete Fourier transform unit communicatively coupled to the ADC to perform fast Fourier transform (FFT) of the digital signal to generate a vector; and a constraint decoder coupled to the discrete Fourier transform unit and configured to decode one or more data bits, encoded in the vector, based on one or more signal constraints that change at least one of;
frequency, phase, or amplitude components of the transmit signal, so as to cause the transmit signal to maintain at least a specified peak-to-power-average ratio (PAPR) during a particular time interval. - View Dependent Claims (20, 21, 22, 23)
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Specification