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Hearing aid adapted for wireless power reception

  • US 10,341,787 B2
  • Filed: 10/28/2016
  • Issued: 07/02/2019
  • Est. Priority Date: 10/29/2015
  • Status: Expired due to Fees
First Claim
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1. A hearing aid system comprising:

  • a hearing aid comprising;

    a microphone;

    an audio processing circuitry including an amplifier operatively coupled to the microphone, and a speaker configured to receive amplified signals from the amplifier and generate an amplified sound corresponding to the amplified signal;

    a power supply circuitry configured to power the microphone, the amplifier, and the speaker;

    a receiver comprising at least one coil operatively coupled to the audio processing circuitry and the power supply circuit, wherein the at least one coil is configured to receive wireless signals, and wherein the at least one coil comprises a magnetic metal core within a wire winding, the at least one coil having a receiver impedance; and

    a switching circuit configured to generate first signals responsive to wireless signals in a first frequency range and couple the first signals to the audio processing circuitry and further configured to generate second signals responsive to wireless signals in a second frequency range and couple the second signals to the power supply circuitry; and

    a base unit comprising a transmitter configured to transmit wireless signals in the second frequency range, wherein the transmitter comprises a transmitter coil having a transmitter impedance, wherein the transmitter impedance and the receiver impedance are optimally matched for;

    a particular distance separation between the transmitter and the receiver, and non-optimized for all other separation distances;

    ora particular relative orientation between the transmitter and the receiver, and non-optimized for all other relative orientations.

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