Systems and methods for maximizing wireless power transfer efficiency by instructing a user to change a receiver device's position

  • US 10,141,768 B2
  • Filed: 12/29/2014
  • Issued: 11/27/2018
  • Est. Priority Date: 06/03/2013
  • Status: Active Grant
  • ×
    • Pin Icon | RPX Insight
    • Pin
First Claim
Patent Images

1. A method for receiving wireless power, comprising:

  • receiving, by at least one antenna of a receiver device, radio frequency (RF) power transmission waves from a transmitter, the RF power transmission waves converging to form controlled constructive interference patterns and destructive interference patterns in proximity to the receiver device, wherein the destructive interference patterns form a null space that surrounds the controlled constructive interference patterns and the controlled constructive interference patterns form a pocket of RF energy to be received by the receiver device;

    transmitting, by the receiver device to the transmitter, information used to determine a power level of the pocket of RF energy and efficiency of power received by the receiver device via the at least one antenna from the pocket of RF energy, wherein;

    the information is determined by one or more sensors in the receiver device, andthe information used to determine the power level and efficiency indicates to the transmitter that the receiver device is receiving power at less than a maximum available efficiency; and

    while receiving energy from the pocket of RF energy, instructing a user of the receiver device to change a position of the receiver device based on a comparison of respective voltage level or power received in each respective position or orientation of the receiver device until a level of efficiency that is no less than the maximum available efficiency is achieved for the efficiency of power received by the receiver device via the at least one antenna.

View all claims