2019 Fiscal Year Annual Research Report
Compact WPT system for concurrent transfer of data and power using metamaterial diplexer receiver
| Project/Area Number |
19F19058
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| Research Institution | Kyushu University |
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Principal Investigator |
Pokharel R.K. 九州大学, システム情報科学研究院, 教授 (60398568)
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| Co-Investigator(Kenkyū-buntansha) |
BARAKAT ADEL 九州大学, システム情報科学研究院, 外国人特別研究員
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| Project Period (FY) |
2019-04-25 – 2021-03-31
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| Keywords | 無線電力伝送システム / 電力と信号の同時伝送 / DGS共振器 / メタマテリアル |
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| Outline of Annual Research Achievements |
In this research, simultaneous wireless power and information transfer system was achieved with good channel-to-channel isolation. Two designs were built and tested in the air medium. The first design utilized co-existing defected ground structure (DGS) resonators for the power transfer and Figure-8 inductors for the information transfer on the same transmitter (TX)/receiver (RX) area of 30 mm × 30 mm. The transfer efficiency in both channels exceeded 70% at a 14 mm TX/RX separation. The second design used co-existing DGS resonators for both power and information transfer with an overall TX/RX area of 15 mm × 30 mm. The transfer efficiency in both channels exceeded 65% at a 15 mm TX/RX separation. One design was published to the scientific community and the other is under review.
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| Current Status of Research Progress |
Current Status of Research Progress
2: Research has progressed on the whole more than it was originally planned.
Reason
The research is going according to the plan submitted.
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| Strategy for Future Research Activity |
The current step is the optimization of the realized structures performance in a tissue environment. The chicken meet that can be bought in an ordinary market, as well as human phantom, are targeted for this optimization step. This optimization is necessary to confirm that the developed structures are not harmful to the tissue and suitable for an actual device implementation. Additionally, the development of a new structure based on metamaterial resonators is targeted to further improve the transmission distance, each channel efficiency, and channel-to-channel isolation characteristics. Furthermore, the newly obtained results are to be published to the domestic and international communities in microwave and biomedical research.
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