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Related Experiment Video

Updated: May 15, 2026

Engineering Platform and Experimental Protocol for Design and Evaluation of a Neurally-controlled Powered Transfemoral Prosthesis
11:16

Engineering Platform and Experimental Protocol for Design and Evaluation of a Neurally-controlled Powered Transfemoral Prosthesis

Published on: July 22, 2014

Simplified design equations for Class-E neural prosthesis transmitters.

Philip Troyk1, Zhe Hu

  • 1Department of Biomedical Engineering, Illinois Institute of Technology, Chicago, IL 60616, USA. troyk@iit.edu

IEEE Transactions on Bio-Medical Engineering
|January 8, 2013
PubMed
Summary
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This study introduces simplified design equations for Class-E power amplifiers, crucial for miniaturized neural prostheses. These equations facilitate efficient wireless power and data transmission for implantable devices.

Area of Science:

  • Electrical Engineering
  • Biomedical Engineering
  • Implantable Devices

Background:

  • Miniaturization of implantable electronic devices is critical for next-generation neural prostheses to minimize tissue damage.
  • Transcutaneous magnetic links are the primary method for powering and controlling implanted neural prostheses.
  • Reducing implanted coil size necessitates high-intensity radio frequency magnetic fields from external transmitters.

Purpose of the Study:

  • To present simple, explicit design equations for the Class-E power amplifier circuit topology.
  • To simplify the design process for efficient Class-E circuits used in neural prostheses.
  • To enable easier implementation of zero-voltage-switching and zero-voltage-derivative-switching conditions.

Main Methods:

  • Development of explicit design equations for Class-E power amplifier circuits.

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Last Updated: May 15, 2026

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  • Application of these equations to achieve efficient operation with required switching conditions.
  • Inclusion of numerical design examples to demonstrate the practical application of the equations.

    • Main Results:

    • Successful derivation of simple, explicit design equations for Class-E circuits.
    • Demonstration of a simplified design procedure for efficient Class-E amplifier operation.
    • Validation of the design equations through numerical examples.

    Conclusions:

    • The presented explicit design equations simplify the complex process of designing Class-E power amplifiers.
    • This simplification is vital for the development of smaller, more efficient wireless power systems for neural prostheses.
    • The study facilitates advancements in implantable electronic devices by providing accessible design tools.