2018 Fiscal Year Final Research Report
Study on New Charge Pump Rectifier for Harvesting of Ambient Radio Waves for IoT
| Project/Area Number |
16K06353
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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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| Research Field |
Communication/Network engineering
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| Research Institution | Kyoto University |
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Principal Investigator |
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| Project Period (FY) |
2016-04-01 – 2019-03-31
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| Keywords | ワイヤレス給電 / マイクロ波送電 / 整流回路 |
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| Outline of Final Research Achievements |
In this research, I developed new rectifier for a rectenna (rectifying antenna) to harvest ambient weak radio waves with high conversion efficiency to electricity. The new rectifier can create high voltage with high efficiency from weak radio waves. There are a lot of research and development of Charge Pump rectifier which can create high voltage with high efficiency from weak radio waves. However, the efficiency of the Charge Pump rectifier is poor because it consists of many diodes and capacitances. So I proposed new rectifier which is merged with a Single Shunt rectifier and the Charge Pump rectifier and developed it.
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| Free Research Field |
マイクロ波応用工学
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| Academic Significance and Societal Importance of the Research Achievements |
弱い電力でも高効率で所望電圧を発生できるレクテナ整流回路を用いると、周辺の弱い電磁波から電気エネルギーを得ることができるため、この技術は電池や電源が不要な新しいエネルギーソースとして期待されている。この技術はあまり大きな電力を必要としないIoTセンサー等の電池レス化・コードレス化に適しているとされ、本研究の成果は今後のIoT社会の実現に寄与できるものと考える。また外部にマイクロ波エネルギーの送電装置を備えればさらに能動的にかつより大きなワイヤレスな電力を送ることも可能となる。
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