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RADIO FREQUENCY (RF) POWER HARVESTING CIRCUIT

  • US 20160020636A1
  • Filed: 07/07/2015
  • Published: 01/21/2016
  • Est. Priority Date: 07/15/2014
  • Status: Active Grant
First Claim
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1. A wireless charging circuit comprising:

  • a radio frequency (RF) power harvesting circuit configured to generate a direct-current (DC) charging signal based on a wireless RF charging signal received from a wireless charging station to charge a battery; and

    a wireless charging controller configured to;

    compare an effective charging power in the DC charging signal against a target charging power required by the battery;

    reduce the effective charging power in the DC charging signal if the effective charging power is greater than the target charging power; and

    increase the effective charging power in the DC charging signal if the effective charging power is less than the target charging power.

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