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An asymmetric resonant coupling wireless power transmission link for Micro-Ball Endoscopy
Tianjia Sun1, Xiang Xie, Guolin Li
1Institute of Microelectronics, Department of Electronic Engineering, Tsinghua University, China.
Summary
This study introduces an asymmetric resonant coupling structure for efficient wireless power transmission to Micro-Ball Endoscopy systems. The novel design successfully delivers 200mW, enhancing power efficiency for critical medical applications.
Area of Science:
- Biomedical Engineering
- Wireless Power Transfer
- Medical Devices
Background:
- Micro-Ball Endoscopy requires efficient power delivery to miniaturized systems.
- Existing wireless power solutions face challenges with small form factors and efficiency.
Purpose of the Study:
- To design and optimize a wireless power transmission link for Micro-Ball Endoscopy.
- To enable power delivery to excreted endoscopic Micro-Ball systems for image read-out.
Main Methods:
- Proposed a novel asymmetric resonant coupling structure.
- Implemented a prototype with primary, middle resonant, and cube-like secondary coils.
- Conducted experimental validation of power delivery and efficiency.
Main Results:
- Successfully delivered 200mW of power to the Micro-Ball system.
- Achieved transmission efficiency between 41% and 53%.
- The asymmetric resonant coupling structure improved power efficiency by 13% compared to conventional designs.
Conclusions:
- The developed wireless power transmission system meets the requirements for Micro-Ball based endoscopy.
- The asymmetric resonant coupling structure offers a significant improvement in power efficiency for miniaturized medical devices.
