Patent ID: 9735584
Date: 2017-08-15
CPC Classifications: H01F,H02J,H04B,H04L

Claim:
1. A remote device for receiving wireless power from a wireless power supply, said remote device comprising: an adaptive power receiver capable of receiving power from the wireless power supply through inductive coupling, said adaptive power receiver configurable to a first mode and configurable to a second mode; a load for receiving electrical power generated in said adaptive power receiver, wherein in said first mode, said adaptive power receiver is capable of storing energy received from the wireless power supply, wherein said second mode, said adaptive power receiver releases said stored energy to said load; and a controller operably coupled to the adaptive power receiver, said controller capable of controlling power received from the wireless power supply by selectively configuring the adaptive power receiver between said first mode and said second mode; wherein said controller controls power received by said adaptive power receiver to communicate with the wireless power supply by controlling a duty cycle of said first mode with respect to said second mode over a bit time, wherein increasing said duty cycle increases a duration of time over which said adaptive power receiver is in said first mode, and wherein decreasing said duty cycle decreases said duration of time over which said adaptive power receiver is in said first mode; said controller capable of communicating to the wireless power supply by selectively adjusting said duty cycle between two values to shift impedance of the remote device, wherein adjusting said duty cycle between two values includes adjusting said duty cycle between one or more intermediate duty cycle values.