2012 Fiscal Year Final Research Report
SYNERGISTIC ENERGY HARVESTING TECHNOLOGY FOR AUTONOMOUS INTEGRATED SYSTEMS IN REAL ENVIRONMENT
| Project/Area Number |
23656227
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Electron device/Electronic equipment
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| Research Institution | Tohoku University |
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Principal Investigator |
KOTANI Koji 東北大学, 大学院・工学研究科, 准教授 (20250699)
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| Project Period (FY) |
2011 – 2012
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| Keywords | エネルギーハーベスティング / 環境エネルギー発電 / 複合環境エネルギー / 電子 デバイス・集積回路 |
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| Research Abstract |
In this study, a synergistic energy harvesting technology, in which multiple energy sources being simultaneously available at the same place are utilized in a cooperative manner, has been developed. As an example, a high frequency rectifier equipped with a photovoltaic (PV) cell has been developed for highly efficient energy harvesting from ambient radio waves. A p-n junction diode acting as a PV cell converts light energy to a dc bias voltage, which compensates the threshold voltage of the MOSFETs and enhances the RF to DC power conversion efficiency (PCE) of the rectifier even under extremely low inputpower condition.
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