| Project/Area Number |
25820112
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Power engineering/Power conversion/Electric machinery
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| Research Institution | Nagasaki University (2014-2015)
Fukuoka University (2013) |
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Principal Investigator |
WEI Xiuqin 長崎大学, 工学研究科, 准教授 (80632009)
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| Project Period (FY) |
2013-04-01 – 2016-03-31
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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2015: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2014: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2013: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
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| Keywords | RF電源 / 高周波 / 大電力 / 無線電力伝送 / 注入同期 / 位相縮約 / 安定化 / 高調波歪率 / プッシュプル構造 / プラズマ発生装置 / 電力発振器 / 周波数安定化 / 高効率化 / 低コスト / 高周波数大電力 / 位相縮約アプローチ |
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| Outline of Final Research Achievements |
With the advancement of information devices, high-efficiency high-power-density amplifiers are required in many applications. The oscillator is regarded as a developed amplifier because it has a feature of self-oscillation by a feedback construction. However, there is a problem that the accuracy of the operating frequency is low. This study has presented a technology to achieve an accurate frequency and high efficiency at low cost in the oscillators for communications. In this study, the basic concept is to use the injection-locked theory to the oscillator for achieving an accurate frequency. The injection-locked theory is based on the phase reduction approach (PRA), which is an analysis method developed in the filed of physics. By combining the PRA and the original circuit-design technique proposed by the applicant to reduce the switching losses, the results show that it is possible to realize a oscillator with accurate operating frequency and high efficiency at low cost.
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