Wireless power harvesting and transmission with heterogeneous signals

  • US 9,101,777 B2
  • Filed: 08/29/2011
  • Issued: 08/11/2015
  • Est. Priority Date: 06/01/2007
  • Status: Active Grant
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First Claim
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1. A wireless power system comprising:

  • at least two mobile devices, each comprising a wireless power harvester; and

    a wireless power source having a low power mode and a power transmission mode, the wireless power source configured to utilize less power during the low power mode than during the power transmission mode;

    wherein the at least two mobile devices and the wireless power source are configured to communicate using at least a first communication signal and a second communication signal to enable the wireless power source to change between the low power mode and the power transmission mode;

    wherein at least one of the at least two mobile devices is assigned a priority based on a characteristic of the first communication signal and the second communication signal with the wireless power source; and

    wherein the priority determines a profile of a power transmission during the power transmission mode;

    wherein the profile of the power transmission is determined based on an energy profile, the profile of the power transmission comprising amplitude and frequency of the power transmission, and the energy profile comprising an estimation across an interval of at least one characteristic of a signal related to wireless power; and

    wherein an amount of power transmitted respectively to each of the at least two mobile devices, at a same time in the power transmission by a single antenna of the wireless power source, is affected by the profile of the power transmission, in accordance with the priority.

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