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July 1, 2026EnergiesOpen Access

Optimized Planar Spiral Coil Design for Efficient Wireless Power Transfer in Implantable Medical Devices

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Authors

WZWeidong ZhaoYXYufeng XieZCZhiyuan Chen

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Overview

Randomized trial demonstrates efficient power delivery in implantable devices, indicating clinical utility.

Key Points

  • This research aims to enhance wireless power transfer systems for implantable medical devices through an optimized coil design.
  • Developed a five-coil array integrated wireless power transfer system for implantable applications.
  • Tuned all coils to operate at the 13.56 MHz ISM band for optimal performance.
  • Conducted system analysis using scattering parameters to measure power transfer efficiency.
  • Achieved a maximum transfer efficiency of 55% at an ideal alignment of 10-20 mm.
  • Maintained efficiency exceeding 50% even with a 5-10 mm lateral displacement at a 10 mm distance.
  • Demonstrated a highly uniform magnetic field distribution that tolerates misalignment effectively.

Cite This Study

Zhao et al. (2026) studied this question.

synapsesocial.com/papers/6a44afdc5cd2549c8bc44c00https://doi.org/10.3390/en19133082
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Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1Coils Parallelization: A Strategy for Improving Power Transfer Efficiency and Specific Absorption Rate in Wireless Power Transfer System for Implantable Medical Devices2024 · 1 citations
  2. 2AI-Optimized Inductive Coupling Coil Design for Safe Wireless Power Transfer in Implantable Medical Devices: An Interdisciplinary Engineering–Healthcare Approach2026
  3. 3Design of Wireless Power Transfer Cage for Uniform Magnetic Field to Implantable Medical Devices Mounted on Animals2024
  4. 4Wireless power transfer system using Helmholtz coils for powering Gastrointestinal Capsule biomedical implants2024
  5. 5Wireless Power Transfer for Biomedical Implants using Series–Parallel Spider-Web Coil Configuration2025