2023 Fiscal Year Final Research Report
Metamaterial-based Compact and Efficient Wireless Power Transfer System for Biomedical Implants
| Project/Area Number |
21K04178
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Review Section |
Basic Section 21060:Electron device and electronic equipment-related
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| Research Institution | Kyushu University |
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Principal Investigator |
Pokharel Ramesh 九州大学, システム情報科学研究院, 教授 (60398568)
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| Project Period (FY) |
2021-04-01 – 2024-03-31
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| Keywords | metamaterial / WPT system / SWIPT system / embedded absorber / data rate / compact size |
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| Outline of Final Research Achievements |
In this project, we developed a novel structure for a compact wireless power transfer (WPT) system and an innovative metamaterial to enhance power transfer efficiency, WPT distance and misalignment through human tissue. We have also proposed an innovated way to integrate the rectifier circuits on receiver so that its size is not increased with sacrificing its efficiency. Using a 7mm x 7mm receiver, we achieved an AC to DC efficiency of over 35%.
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| Free Research Field |
Electronic
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| Academic Significance and Societal Importance of the Research Achievements |
Rechargeable or battery-free medical implants, like tiny batteries for pacemakers, promise minimally invasive surgeries and wireless communication for easy follow-up. This solution aims to reduce costs from repeated surgeries, improve life quality, and minimize emergencies and insurance expenses.
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