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Dynamic reconfiguration for maximizing the overall link efficiency of energy receivers in a reliable implantable system

  • US 10,177,606 B2
  • Filed: 09/30/2016
  • Issued: 01/08/2019
  • Est. Priority Date: 10/21/2015
  • Status: Active Grant
First Claim
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1. A system for providing power to an implanted receiver, the system comprising:

  • 1) an acoustic transmitter configured to provide acoustic radiation having an acoustic frequency f;

    2) a receiver unit configured to be implanted into a biological subject, wherein the receiver unit is configured to receive the acoustic radiation and to be powered by the acoustic radiation;

    wherein the receiver unit comprisesi) an acoustic transducer configured to receive the acoustic radiation and to provide an input electrical AC signal;

    ii) an adaptively reconfigurable electrical impedance matching network configured to receive the input electrical AC signal and to provide an output electrical AC signal, wherein the electrical impedance matching network is capacitive without including any inductors;

    iii) an electrical load; and

    iv) a power recovery circuit configured to receive the output electrical AC signal and to provide DC power to the electrical load; and

    3) a system controller;

    wherein the system controller is configured toa) alter one or more controlled system parameters including the acoustic frequency f, andb) alter a configuration of the adaptively reconfigurable electrical impedance matching network,responsive to changes in one or more system variables to control power delivery from the acoustic transmitter to the electrical load.

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