Wireless power harvesting and transmission with heterogeneous signals

  • US 9,318,898 B2
  • Filed: 06/25/2015
  • Issued: 04/19/2016
  • Est. Priority Date: 06/01/2007
  • Status: Active Grant
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1. A transmitter for wireless power transmission comprising:

  • at least two antennas configured to transmit at least two radio frequency power signals;

    a communication module connected to the at least two antennas, the communication module configured to transmit first radio frequency communication signals to a first electronic device and a second electronic device, and receive second radio frequency communication signals from the first electronic device and the second electronic device, wherein the second radio frequency communication signals comprise location information for the first electronic device and the second electronic device;

    a power transmission module connected to the at least two antennas, the power transmission module configured to generate the at least two radio frequency power signals; and

    a power transmitter control module connected to the power transmission module, the power transmitter control module configured to control a characteristic of the at least two radio frequency power signals, the power transmitter control module connected to the communication module to control the first radio frequency communication signals;

    wherein the power transmitter control module controls the characteristic by at least phase-shifting and amplitude-adjusting a first of the at least two radio frequency power signals with respect to a second of the at least two radio frequency power signals to concurrently provide respective summations of the first and second radio frequency power signals at a first wireless power receiver of the first electronic device and at a second wireless power receiver of the second electronic device via constructive and destructive interference patterns.

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