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Class E driver for transcutaneous power and data link for implanted electronic devices.

P R Troyk1, M A Schwan

  • 1Illinois Institute of Technology, IIT Center, Chicago 60616.

Medical & Biological Engineering & Computing
|January 1, 1992
PubMed
Summary
This summary is machine-generated.

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This study presents a Class E transmitter for magnetic transcutaneous coupling, simplifying design for efficient power and data transfer to implanted devices, even with low coupling. It enables high currents at radio frequencies with low power loss.

Area of Science:

  • Biomedical Engineering
  • Electrical Engineering
  • Implantable Devices

Background:

  • Magnetic transcutaneous coupling is essential for powering and communicating with implanted electronic devices.
  • Existing methods face challenges, particularly with low coefficients of coupling.

Purpose of the Study:

  • To introduce a novel transmitter/coil driver design for magnetic transcutaneous coupling.
  • To simplify the design process for such systems.
  • To improve power and data transfer efficiency for implanted devices.

Main Methods:

  • Utilized Class E topology for the transmitter/coil driver design.
  • Developed a 'high-Q approximation' to streamline the design procedure.
  • Implemented a data modulation technique using synchronous frequency shifting.

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Main Results:

  • The Class E circuit demonstrates significant promise for transcutaneous power and data transfer.
  • The design approach is particularly effective for systems with low coefficients of coupling.
  • Achieved high transmitter coil currents (several amperes) at radio frequencies.
  • Maintained relatively low active device power dissipation.

Conclusions:

  • The described Class E transmitter design offers a promising solution for efficient wireless power and data transfer to implanted electronics.
  • The 'high-Q approximation' simplifies the engineering of these systems.
  • The approach is well-suited for applications requiring robust performance even with challenging coupling conditions.