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Implantation and Control of Wireless, Battery-free Systems for Peripheral Nerve Interfacing
Published on: October 20, 2021
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Three-Phase Time-Multiplexed Planar Power Transmission to Distributed Implants
Byunghun Lee1, Dukju Ahn2, Maysam Ghovanloo1
1GT-Bionics Laboratory, School of Electrical and Computer Engineering, Georgia Institute of Technology, Atlanta, GA 30308 USA.
IEEE Journal of Emerging and Selected Topics in Power Electronics
|April 2, 2016
Summary
This study introduces a novel wireless power transmitter for distributed receivers, improving power transfer efficiency. The new system offers a significant advancement for powering implants and devices across large areas.
Area of Science:
- Electrical Engineering
- Biomedical Engineering
- Electromagnetics
Background:
- Wireless power transfer is crucial for implantable devices.
- Existing systems struggle with efficiency for arbitrarily distributed receivers.
Purpose of the Study:
- To develop a wireless power transmitter for homogeneous power delivery to distributed receivers.
- To enhance power transfer efficiency, especially under misalignment conditions.
Main Methods:
- Designed a three-layer hexagonal planar spiral coil (hex-PSC) transmitter.
- Implemented a three-phase time-division-multiplexed power transmission strategy.
- Validated the system using Advanced Design System simulations and a measurement setup.
Main Results:
- The novel transmitter delivers 5.4 mW to each receiver.
- Achieved an average power transfer efficiency of 5.8% at 90° misalignment.
- Outperformed conventional transmitters, which achieved only 1.4% efficiency.
Conclusions:
- The proposed three-phase power transmission concept enables homogeneous wireless powering of arbitrarily distributed receivers.
- This technology holds significant potential for applications like powering brain implants.
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