| Project/Area Number |
23360047
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Engineering fundamentals
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| Research Institution | The University of Electro-Communications |
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Principal Investigator |
TANAKA Hisaaki 電気通信大学, 情報理工学(系)研究科, 准教授 (20334584)
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| Co-Investigator(Kenkyū-buntansha) |
TOKUDA Isao 立命館大学, 理工学部, 教授 (00261389)
CHIBA Hayato 九州大学, 数理学研究院, 准教授 (70571793)
福田 弘和 大阪府立大学, 工学(系)研究科(研究院), 准教授 (90405358)
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| Co-Investigator(Renkei-kenkyūsha) |
中尾 裕也 東京工業大学, 情報理工学研究科, 准教授 (40344048)
藤島 実 広島大学, 先端物質科学研究科, 教授 (60251352)
唐沢 好男 電気通信大学, 情報理工(系)研究科, 教授 (40313407)
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| Project Period (FY) |
2011-04-01 – 2014-03-31
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥16,900,000 (Direct Cost: ¥13,000,000、Indirect Cost: ¥3,900,000)
Fiscal Year 2013: ¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2012: ¥6,370,000 (Direct Cost: ¥4,900,000、Indirect Cost: ¥1,470,000)
Fiscal Year 2011: ¥5,720,000 (Direct Cost: ¥4,400,000、Indirect Cost: ¥1,320,000)
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| Keywords | 注入同期 / 周波数引き込み / ロックレンジ / 非線形振動子 / 最適化問題 / 変分解析 / 同期・引き込み / 最適化アルゴリズム / 発振器（振動子） / CMOS 発振回路 / 概日リズム制御 / genetic algorithm / 発振器(振動子) / CMOS発振回路 |
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| Research Abstract |
Since injection-locking improves frequency stability in the oscillator, its researches have been steadily progressed for various applications. However, as far as we know, any design methodology for optimizing such injection-locking ability has not yet been established. In this study, using a newly developed optimization theory by calculus of variations it becomes possible to maximize locking ranges of several practically important oscillators; CMOS ring oscillators and Class-E oscillators for power electronics, under realistic constraints.
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