×

Wireless charging with multiple power receiving facilities on a wireless device

  • US 9,620,996 B2
  • Filed: 04/08/2016
  • Issued: 04/11/2017
  • Est. Priority Date: 04/10/2015
  • Status: Active Grant
First Claim
Patent Images

1. An integrated circuit configured to receive wireless power from multiple antennas over radio-frequency transmissions, the integrated circuit comprising:

  • multiple antenna ports configured to receive wireless power from two or more antennas, and configured to transmit a beacon signal to a transmitter,wherein the beacon signal includes a calibration signal for receiving power,wherein the calibration signal is used by the transmitter to generate a waveform for transmitting radio frequency (RF) power to a client device physically and electrically coupled to the integrated circuit, andwherein the transmitter is configured to wirelessly transmit RF power using multiple open paths from the transmitter to the client device;

    a detection unit for each of the multiple antenna ports and configured to detect received wireless power;

    a rectifying unit for each of the multiple antenna ports and configured to convert received wireless power in RF power to direct current (DC) power, and to output the DC power to an external device;

    a communication unit configured to filter data from the received wireless power;

    a beacon signal unit configured to transmit the beacon signal to the transmitter to thereby permit the transmitter to determine an identity and location of the integrated circuit,wherein the beacon signal unit is configured to transmit the beacon signal according to a beacon signaling schedule,wherein the beacon signaling schedule is partially based on a time slot when the transmitter is to send wireless RF power to the client device; and

    a control unit configured to switch the integrated circuit between filtering data, rectifying RF power, and transmitting a beacon signal,wherein the control unit is configured to send a predetermined voltage to a switch configured to cause at least one of the multiple antenna ports to switch from transmitting the beacon signal to receiving wireless RF power.

View all claims
  • 3 Assignments
Timeline View
Assignment View
    ×
    ×