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Basic Theory and Applications for Next-Generation Power Amplifier Achieving High Power-Conversion Efficiency and Low Cost

Research Project

Project/Area Number 23760253
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Power engineering/Power conversion/Electric machinery
Research InstitutionChiba University

Principal Investigator

SEKIYA Hiroo  千葉大学, 融合科学研究科(研究院), 准教授 (20334203)

Project Period (FY) 2011 – 2013
Project Status Completed (Fiscal Year 2013)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2013: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2012: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2011: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Keywordsパワーエレクトロニクス / 電力増幅器 / 非線形回路理論 / 低コスト / 共振型コンバータ / 無線電力伝送 / RF電源回路 / 非線形回路解析 / 国際情報交流 米国オハイオ州 / 国際情報交流 スペインバルセロナ / 無線通信用増幅器 / ランプバラスト
Research Abstract

The purpose of this research is to establish the theory of a switching technique for next-generation power amplifiers, which achieves both power-conversion efficiency enhancement and cost reduction. By applying injection current with harmonics frequency to main amplifier, it is possible to achieve smooth current and voltage at the switches. Additionally, numerical design algorithm for designing the amplifiers was proposed and implemented. Through the research and development of the concrete applications, such as RF power source, dc-dc converter, and lamp ballast, the validities of the established theory and the implemented design tool could be shown. The developed switching techniques is quite effective because of its power-conversion efficiency enhancement and cost reduction and is expected to be used as many applications in the electronics field.

Report

(4 results)
  • 2013 Annual Research Report   Final Research Report ( PDF )
  • 2012 Research-status Report
  • 2011 Research-status Report
  • Research Products

    (66 results)

All 2014 2013 2012 2011 Other

All Journal Article (23 results) (of which Peer Reviewed: 14 results) Presentation (36 results) (of which Invited: 1 results) Remarks (4 results) Patent(Industrial Property Rights) (3 results)

  • [Journal Article] Waveform equations, output power, and power conversion efficiency or class-E inverter outside nominal operation2014

    • Author(s)
      Tomoharu Nagashima
    • Journal Title

      IEEE Transactions on Industrial Electronics

      Volume: 61 Issue: 4 Pages: 1799-1810

    • DOI

      10.1109/tie.2013.2267693

    • Related Report
      2013 Annual Research Report 2013 Final Research Report
    • Peer Reviewed
  • [Journal Article] Analysis and design of class-E_M power amplifier2014

    • Author(s)
      X. Wei, T. Nagashima, M. K. Kazimierczuk, H. Sekiya, and T. Suetsugu
    • Journal Title

      IEEE Trans. Circuits Syst.-I, vol.61, no.4, pp. 976-986

      Volume: vol.61, no.4 Issue: 4 Pages: 976-986

    • DOI

      10.1109/tcsi.2013.2283991

    • Related Report
      2013 Annual Research Report 2013 Final Research Report
    • Peer Reviewed
  • [Journal Article] Analysis, Design and Implementation of Class-E ZVS Power Amplifier with MOSFET Nonlinear Drain-to-Source Parasitic Capacitance at Any Grading Coefficient2014

    • Author(s)
      Mohsen Hayati, Ali Lotfi, Marian K. Kazimierczuk, and Hiroo Sekiya
    • Journal Title

      IEEE Transactions on Power Electronics

      Volume: 29 Issue: 9 Pages: 1-1

    • DOI

      10.1109/tpel.2013.2286160

    • Related Report
      2013 Annual Research Report 2013 Final Research Report
    • Peer Reviewed
  • [Journal Article] Modeling and analysis of class-E amplifier with a shunt inductor at sub-nominal operation for any duty ratio2014

    • Author(s)
      Mohsen Hayati, Ali Lotfi, Marian K. Kazimierczuk, and Hiroo Sekiya
    • Journal Title

      IEEE Transactions on Circuits and Systems Part I

      Volume: 61 Issue: 4 Pages: 987-1000

    • DOI

      10.1109/tcsi.2013.2283692

    • Related Report
      2013 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Performance study of class-E power amplifier with shunt inductor at sub-nominal condition2013

    • Author(s)
      Mohsen Hayati, Ali Lotfi, Marian K. Kazimierczuk, and Hiroo Sekiya
    • Journal Title

      IEEE Trans. Power Electronics

      Volume: 8 Issue: 8 Pages: 3834-3844

    • DOI

      10.1109/tpel.2012.2227814

    • Related Report
      2013 Annual Research Report 2012 Research-status Report
    • Peer Reviewed
  • [Journal Article] Analysis and design of class-E power amplifier with MOSFET parasitic linear and nonlinear capacitances at any duty ratio2013

    • Author(s)
      Mohsen Hayati, Ali Lotfi, Marian K. Kazimierczuk, and Hiroo Sekiya
    • Journal Title

      IEEE Transactions on Power Electronics

      Volume: 28 Issue: 11 Pages: 5222-5232

    • DOI

      10.1109/tpel.2013.2247633

    • Related Report
      2013 Annual Research Report 2012 Research-status Report
    • Peer Reviewed
  • [Journal Article] Negative-bias driving voltage for class-E GaN HEMT oscillator using a diode2013

    • Author(s)
      Youhei Noguchi, Xiuqin Wei, Tomoharu Nagashima, Hiroo Sekiya, and Tadashi Suetsugu
    • Journal Title

      2013 RISP International Workshop on Nonlinear Circuits, Communications and Signal Processing (NCSP2013)

      Volume: - Pages: 201-204

    • Related Report
      2012 Research-status Report
  • [Journal Article] Push-Pull class-E_M power amplifier for low harmonic-contents and high output-power applications2012

    • Author(s)
      Xiuqin Wei, Shingo Kuroiwa, Tomoharu Nagashima, Marian K. Kazimierczuk, and Hiroo Sekiya
    • Journal Title

      IEEE Trans. Circuits and Syst.-I

      Volume: 9 Issue: 9 Pages: 2137-2146

    • DOI

      10.1109/tcsi.2012.2185301

    • Related Report
      2013 Final Research Report 2012 Research-status Report 2011 Research-status Report
    • Peer Reviewed
  • [Journal Article] Design of class-E_M oscillator with second harmonic injection2012

    • Author(s)
      R. Miyahara, X. Wei, T. Nagashima, T. Kousaka, and H. Sekiya
    • Journal Title

      IEEE Trans. Circuits Syst.-I

      Volume: vol.59, no.10 Issue: 10 Pages: 2456-2467

    • DOI

      10.1109/tcsi.2012.2188936

    • Related Report
      2013 Final Research Report 2012 Research-status Report
    • Peer Reviewed
  • [Journal Article] Bifurcation analysis of the class-E inverter for switching-pattern derivations2012

    • Author(s)
      Tomoharu Nagashima, Xiuqin Wei, Takuji Kousaka, and Hiroo Sekiya
    • Journal Title

      IEICE Communications Express

      Volume: 1 Issue: 1 Pages: 33-39

    • DOI

      10.1587/comex.1.33

    • NAID

      130001921487

    • ISSN
      2187-0136
    • Related Report
      2012 Research-status Report
    • Peer Reviewed
  • [Journal Article] Steady-State Behavior of Class-E Amplifier Outside Nominal Operation Taking into Account MOSFET-Body-Diode Effect2012

    • Author(s)
      Tomoharu Nagashima and Hiroo Sekiya
    • Journal Title

      Journal of Signal Processing

      Volume: 4 Pages: 287-290

    • NAID

      130004457015

    • Related Report
      2012 Research-status Report
  • [Journal Article] Particle swarm optimization for design of class-E amplifier2012

    • Author(s)
      Yuichi Tanji, Haruna Matsushita, and Hiroo Sekiya
    • Journal Title

      Nonlinear Theory and Its Applications, IEICE Journal,

      Volume: 4 Pages: 586-595

    • NAID

      130002139318

    • Related Report
      2012 Research-status Report
  • [Journal Article] A numerical approach to calculate grazing bifurcation points in an impact oscillator with periodic boundaries2012

    • Author(s)
      Akiko Takahashi, Hiroo Sekiya, Kazuyuki Aihara and Takuji Kousaka
    • Journal Title

      2012 IEEE International Symposium on Circuits and Systems (ISCAS2012)

      Volume: - Pages: 2011-2014

    • DOI

      10.1109/iscas.2012.6271702

    • Related Report
      2012 Research-status Report
  • [Journal Article] Influence of nonlinear shunt capacitance in harmonic distortion in output envelope of drain voltage modulated Class E amplifier2012

    • Author(s)
      Tadashi Suetsugu, Hiroo Sekiya, and Xiuquin Wei
    • Journal Title

      2012 International Symposium on Nonlinear Theory and its Applications (NOLTA2012)

      Volume: - Pages: 614-617

    • Related Report
      2012 Research-status Report
  • [Journal Article] Bifurcation in Injection-locked Class-EM Oscillator2012

    • Author(s)
      Ryuta Nakamura, Xiuqin Wei, Takuji Kousaka, and Hiroo Sekiya
    • Journal Title

      2012 International Symposium on Nonlinear Theory and its Applications (NOLTA2012)

      Volume: - Pages: 691-694

    • Related Report
      2012 Research-status Report
  • [Journal Article] Analytical derivation of switching-pattern distribution for class-E amplifier using bifurcation theory2012

    • Author(s)
      Tomoharu Nagashima, Xiuqin Wei, Takuji Kousaka, and Hiroo Sekiya
    • Journal Title

      2012 International Symposium on Nonlinear Theory and its Applications (NOLTA2012)

      Volume: - Pages: 687-690

    • NAID

      110009465757

    • Related Report
      2012 Research-status Report
  • [Journal Article] Inductively coupled wireless power transfer with class-DE power amplifier2012

    • Author(s)
      Tomoharu Nagashima, Xiuqin Wei, Tadashi Suetsugu, and Hiroo Sekiya
    • Journal Title

      2012 IEEE Asia Pacific Conference on Circuit and Systems (APCCAS2012)

      Volume: - Pages: 73-76

    • Related Report
      2012 Research-status Report
  • [Journal Article] Design of class-E_M oscillator with second...2012

    • Author(s)
      Ryosuke. Miyahara, X. Wei, H. Sekiya, et. al.
    • Journal Title

      IEEE Trans. Circuits and Syst.-I

      Volume: vol.59

    • Related Report
      2011 Research-status Report
    • Peer Reviewed
  • [Journal Article] Design of class-E amplifier with MOSFET linear gate-to-drain and nonlinear drain-to-source capacitances2011

    • Author(s)
      Xiuqin Wei, Hiroo Sekiya, Shingo Kuroiwa, Tadashi Suetsugu, Marian K.Kazimierczuk
    • Journal Title

      IEEE Transactions on Circuits and Systems I

      Volume: Volume:58,Issue:10 Issue: 10 Pages: 2556-2565

    • DOI

      10.1109/tcsi.2011.2123490

    • Related Report
      2013 Final Research Report 2011 Research-status Report
    • Peer Reviewed
  • [Journal Article] Power conversion efficiency of class-E power ...2011

    • Author(s)
      T. Nagashima, X. Wei, H. Sekiya, et. al.
    • Journal Title

      Proc. of ISCAS2011

      Volume: - Pages: 749-752

    • DOI

      10.1109/iscas.2011.5937674

    • Related Report
      2011 Research-status Report
    • Peer Reviewed
  • [Journal Article] The dynamic behavior of the class-E_M amp. ...2011

    • Author(s)
      R. Nakamura, H. Sekiya, and T. Kousaka
    • Journal Title

      Proc. of NOMA 2011

      Volume: - Pages: 38-40

    • Related Report
      2011 Research-status Report
    • Peer Reviewed
  • [Journal Article] Design of class-DE power amplifier including ...2011

    • Author(s)
      H. Sekiya, N. Sagawa, et. al.
    • Journal Title

      Proc. of EMCW2011

      Volume: -

    • Related Report
      2011 Research-status Report
  • [Journal Article] Design of symmetrical class-E_M power amp.2011

    • Author(s)
      X. Wei, T. Nagashima, H. Sekiya, et. al.
    • Journal Title

      Porc. of IECON 011

      Volume: - Pages: 1235-1240

    • DOI

      10.1109/iecon.2011.6119496

    • Related Report
      2011 Research-status Report
    • Peer Reviewed
  • [Presentation] Analytical design procedure for resonant inductively coupled wireless power transfer with class-E^2 DC-DC converter2014

    • Author(s)
      Tomoharu Nagashima, Kazuhide Inoue, Xiuqin Wei, Elisenda Bou, Eduard Alarcon, Marian K. Kazimierczuk, and Hiroo Sekiya
    • Organizer
      2014 IEEE International Symposium on Circuits and Systems (ISCAS2014)
    • Place of Presentation
      オーストラリア・メルボルン
    • Related Report
      2013 Annual Research Report
  • [Presentation] E^2級DC-DCコンバータを用いた磁界共鳴型無線電力伝送システムの解析的設計2014

    • Author(s)
      永島和治, 井上一秀, 魏秀欽, 関屋大雄
    • Organizer
      電子情報通信学会無線電力伝送時限研究会
    • Place of Presentation
      佐賀市
    • Related Report
      2013 Annual Research Report
  • [Presentation] Analysis of class EM amplifier with considering non-zero current fall time of drain current2013

    • Author(s)
      Z. Zhang, X. Wei, H. Sekiya, N. Oyama, T. Suetsugu, and T. Nagashima
    • Organizer
      Prof. of International Future Energy Electronics Conference 2013 (IFEEC2013)
    • Place of Presentation
      Taipei, Taiwan
    • Year and Date
      2013-11-05
    • Related Report
      2013 Final Research Report
  • [Presentation] High-frequency high-efficiency resonant converter with class-EM inverter and class-E rectifier2013

    • Author(s)
      H. Sekiya, X. Wei, and T. Nagashima
    • Organizer
      Proc. of IEEE 56th Intl Midwest Symposium on Circuits & Systems (MWSCAS2013)
    • Place of Presentation
      Ohio, USA
    • Year and Date
      2013-08-05
    • Related Report
      2013 Final Research Report
  • [Presentation] Numerical derivations of locking ranges for injection-locked class-E oscillator2013

    • Author(s)
      Tomoharu Nagashima, Xiuqin Wei, Hisa-Aki Tanaka, and Hiroo Sekiya
    • Organizer
      The 10th IEEE International Conference on Power Electronics and Drive Systems (PEDS2013)
    • Place of Presentation
      北九州市
    • Related Report
      2013 Annual Research Report
  • [Presentation] Effect of MOSFET Parasitic Capacitances on EER Transmitter with Class-E Amplifier2013

    • Author(s)
      Xiuqin Wei, Tomoharu Nagashima, Hiroo Sekiya, and Tadashi Suetsugu
    • Organizer
      2013 IEEE International Symposium on Circuits and Systems (ISCAS2013)
    • Place of Presentation
      中国・北京
    • Related Report
      2013 Annual Research Report
  • [Presentation] High-frequency high-efficiency resonant converter with class-E_M inverter and class-E rectifier2013

    • Author(s)
      Hiroo Sekiya, Xiuqin Wei, and Tomoharu Nagashima
    • Organizer
      IEEE 56th Intl Midwest Symposium on Circuits & Systems (MWSCAS2013)
    • Place of Presentation
      米国・オハイオ州コロンバス
    • Related Report
      2013 Annual Research Report
  • [Presentation] Inductively coupled wireless powertransfer with class-E^2 DC-DC converter2013

    • Author(s)
      Tomoharu Nagashima, Kazuhide Inoue, Xiuqin Wei, Elisenda Bou, Eduard Alarcon, and Hiroo Sekiya
    • Organizer
      The 21th European Conference of Circuits Technology and Devices(ECCTD2013)
    • Place of Presentation
      ドイツ・ドレスデン
    • Related Report
      2013 Annual Research Report
  • [Presentation] Analysis of class E_M amplifier with considering non-zero current fall time of drain current2013

    • Author(s)
      Zhicai Zhang, Xiuqin Wei, Hiroo Sekiya, Naoki Oyama, Tadashi Suetsugu, and Tomoharu Nagashima
    • Organizer
      International Future Energy Electronics Conference 2013 (IFEEC2013)
    • Place of Presentation
      台湾・台北
    • Related Report
      2013 Annual Research Report
  • [Presentation] Design of high-efficiency inductive-coupled wireless power transfer system with class-DE transmitter and class-E rectifier2013

    • Author(s)
      Kazuhide Inoue, Tomoharu Nagashima, Xiuqin Wei, Hiroo Sekiya
    • Organizer
      The 39th Annual Conference of the IEEE Industrial Electronics Society (IECON 2013)
    • Place of Presentation
      オーストリア・ウィーン
    • Related Report
      2013 Annual Research Report
  • [Presentation] MOSFET Parasitic Capacitance Effects to Class-DE Power Amplifier2013

    • Author(s)
      Hiroo Sekiya, Xiuqin Wei, and Tomoharu Nagashima
    • Organizer
      2013 IEEE Electrical Design of Advanced Packaging & System Symposium (EDAPS2013)
    • Place of Presentation
      奈良市
    • Related Report
      2013 Annual Research Report
  • [Presentation] あらゆる負荷抵抗に対して零電圧スイッチングを達成する誘導性インピーダンス変換器を用いたE級インバータの設計2013

    • Author(s)
      永島和治, 魏秀欽, 末次正, 関屋大雄
    • Organizer
      電子情報通信学会非線形問題研究会
    • Place of Presentation
      福岡市
    • Related Report
      2013 Annual Research Report
  • [Presentation] EM級インバータとE級整流器から構成される高周波数高効率共振型コンバータ2013

    • Author(s)
      関屋 大雄, 魏 秀欽, 永島 和治
    • Organizer
      第26回 回路とシステムワークショップ
    • Place of Presentation
      淡路島
    • Related Report
      2013 Annual Research Report
  • [Presentation] Behaviors of EER transmitter with class-E amplifier due to MOSFET parasitic capacitances2013

    • Author(s)
      Xiuqin Wei, Tomoharu Nagashima, Hiroo Sekiya, and Tadashi Suetsugu
    • Organizer
      第26回 回路とシステムワークショップ
    • Place of Presentation
      淡路島
    • Related Report
      2013 Annual Research Report
  • [Presentation] DE級送電器とE級整流器を用いた電磁誘導型無線電力伝送システムの設計2013

    • Author(s)
      井上 一秀, 永島和治, 関屋大雄, 畑本 浩伸, 清水 聡
    • Organizer
      電気学会半導体電力変換研究会
    • Place of Presentation
      東京都港区
    • Related Report
      2013 Annual Research Report
  • [Presentation] E_M級インバータを用いた共振型dc/dcコンバータ2013

    • Author(s)
      関屋大雄, 永島和治, 魏秀欽
    • Organizer
      電子情報通信学会非線形問題研究会
    • Place of Presentation
      香川市
    • Related Report
      2013 Annual Research Report
  • [Presentation] E級スイッチング技術を用いた無線電力伝送システムの設計 - パワーエレクトロニクスの立場から -2013

    • Author(s)
      関屋 大雄
    • Organizer
      Microwave Workshops & Exhibition (MWE2013)
    • Place of Presentation
      横浜市
    • Related Report
      2013 Annual Research Report
    • Invited
  • [Presentation] E^2級dc/dcコンバータを用いた磁界結合型無線電力伝送システムの設計2013

    • Author(s)
      君島亜美,井上一秀,永島和治,関屋大雄
    • Organizer
      2013年 電子情報通信学会総合大会
    • Place of Presentation
      岐阜大学
    • Related Report
      2012 Research-status Report
  • [Presentation] ドレイン電流の立下り時間を考慮したE_M級増幅器の解析2013

    • Author(s)
      張 志才, 永島和治, 魏秀欽, 関屋大雄
    • Organizer
      電子情報通信学会非線形問題研究会
    • Place of Presentation
      千葉大学
    • Related Report
      2012 Research-status Report
  • [Presentation] Parallel connected class D amplifiers for RF power source applications2013

    • Author(s)
      Tadashi Suetsugu, Xiuqin Wei, Tomoharu Nagashima, and Hiroo Sekiya
    • Organizer
      電子情報通信学会非線形問題研究会
    • Place of Presentation
      千葉大学
    • Related Report
      2012 Research-status Report
  • [Presentation] Fundamental study on drain efficiency of EDSM/EPWM transmitter using class-EM amplifier2012

    • Author(s)
      M. Taromaru, N. Oyama, H. Sekiya, and T. Suetsugu
    • Organizer
      Proc. 2011 Korea-Japan Microwave Conf. (KJMW 2011)
    • Place of Presentation
      Seoul, Korea
    • Year and Date
      2012-11-11
    • Related Report
      2013 Final Research Report
  • [Presentation] Bifurcation in injection-locked class-EM oscillator2012

    • Author(s)
      R. Nakamura, X. Wei, T. Kousaka, and H. Sekiya
    • Organizer
      Proc. of 2012 International Symposium on Nonlinear Theory and its Applications (NOLTA2012)
    • Place of Presentation
      Majorca, Spain
    • Year and Date
      2012-10-25
    • Related Report
      2013 Final Research Report
  • [Presentation] Approximate analysis for class-EM amplifier taking into account harmonic frequency components2012

    • Author(s)
      T. Kakimoto, T. Nagashima, X. Wei and H. Sekiya
    • Organizer
      Proc. of 2012 International Workshop on Nonlinear Circuits, Communications and Signal Processing (NCSP2012)
    • Place of Presentation
      Hawaii, USA
    • Year and Date
      2012-03-04
    • Related Report
      2013 Final Research Report
  • [Presentation] E級増幅器におけるQ値に非依存な電力変換効率の解析的導出2012

    • Author(s)
      永島和治, 魏秀欽, 高坂拓司, 関屋大雄
    • Organizer
      電子情報通信学会非線形問題研究会
    • Place of Presentation
      いせシティプラザ 2F多目的ホール
    • Related Report
      2012 Research-status Report
  • [Presentation] Comparisons of RF choke inductor designs by area product and core geometry2012

    • Author(s)
      Hiroo Sekiya
    • Organizer
      2012 Korea-Japan Joint Technical Workshop on Semiconductor Power Converter
    • Place of Presentation
      Posco International Center, Korea
    • Related Report
      2012 Research-status Report
  • [Presentation] Resonant class E rectifier for wireless power transfer in contactless IC card reader/writer2012

    • Author(s)
      Tadashi Suetsugu, Xiuqin Wei, Kazunari Shimazaki, Tomoharu Nagashima, and Hiroo Sekiya
    • Organizer
      2012 Korea-Japan Joint Technical Workshop on Semiconductor Power Converter
    • Place of Presentation
      Posco International Center, Korea
    • Related Report
      2012 Research-status Report
  • [Presentation] E級増幅器におけるQ値に非依存な電力変換効率の解析的導出2012

    • Author(s)
      永島和治, 魏秀欽, 高坂拓司, 関屋大雄
    • Organizer
      電子情報通信学会非線形問題研究会
    • Place of Presentation
      伊勢
    • Related Report
      2011 Research-status Report
  • [Presentation] Design of symmetric class-EM power amplifier2011

    • Author(s)
      X. Wei, T. Nagashima, S. Kuroiwa, H. Sekiya
    • Organizer
      Proc. of 37th Annual Conference on IEEE Industrial Electronics Society (IECON2011)
    • Place of Presentation
      Melbourne, Australia
    • Year and Date
      2011-10-10
    • Related Report
      2013 Final Research Report
  • [Presentation] The dynamic behavior of the class-EM amplifier outside of nominal conditions2011

    • Author(s)
      R. Nakamura, H. Sekiya, and T. Kousaka
    • Organizer
      Proc. of International Workshop on Nonlinear Maps and their Applications (NOMA2011)
    • Place of Presentation
      Évora, Portugal
    • Year and Date
      2011-09-15
    • Related Report
      2013 Final Research Report
  • [Presentation] 理想的ではないパラメータにおける1入力E_M級増幅器の動的挙動2011

    • Author(s)
      中村竜太 関屋大雄 高坂拓司
    • Organizer
      電子情報通信学会非線形問題研究会
    • Place of Presentation
      知床
    • Related Report
      2011 Research-status Report
  • [Presentation] E_M級電力増幅回路によるEPWM送信機のドレーン効率に関する基礎検討2011

    • Author(s)
      大山修毅 関屋大雄 末次正 太郎丸真
    • Organizer
      電子情報通信学会無線通信システム研究会
    • Place of Presentation
      旭川
    • Related Report
      2011 Research-status Report
  • [Presentation] 最適状態外におけるE級増幅器の電力変換効率の解析表現2011

    • Author(s)
      永島和治 魏秀欽 関屋大雄
    • Organizer
      電子情報通信学会非線形問題研究会
    • Place of Presentation
      知床
    • Related Report
      2011 Research-status Report
  • [Presentation] 低高調波歪みのための対称型E_M級電力増幅器2011

    • Author(s)
      魏秀欽 永島和冶 黒岩眞吾 関屋大雄
    • Organizer
      電子情報通信学会非線形問題研究会
    • Place of Presentation
      知床
    • Related Report
      2011 Research-status Report
  • [Presentation] Push-pull class-E_M power amplifier2011

    • Author(s)
      X. Wei, H.Sekiya, S. Kuroiwa
    • Organizer
      24th Workshop of Circuits and Systems
    • Place of Presentation
      淡路島
    • Related Report
      2011 Research-status Report
  • [Presentation] 最適状態外におけるE級増幅器の動作2011

    • Author(s)
      永島和治 関屋大雄
    • Organizer
      第24回 回路とシステムワークショップ
    • Place of Presentation
      淡路島
    • Related Report
      2011 Research-status Report
  • [Presentation] 分岐理論を用いたE級増幅器におけるスイッチング状態の分布2011

    • Author(s)
      永島和治, 魏秀欽, 高坂拓司, 関屋大雄
    • Organizer
      電子情報通信学会非線形問題研究会
    • Place of Presentation
      宮古島
    • Related Report
      2011 Research-status Report
  • [Remarks]

    • URL

      http://www.s-lab.nd.chiba-u.jp

    • Related Report
      2013 Final Research Report
  • [Remarks] 関屋・小室研究室

    • URL

      http://www.s-lab.nd.chiba-u.jp

    • Related Report
      2013 Annual Research Report
  • [Remarks] 関屋研究室

    • URL

      http://www.s-lab/nd.chiba-u.jp

    • Related Report
      2012 Research-status Report
  • [Remarks]

    • URL

      http://www.s-lab.nd.chiba-u.jp/

    • Related Report
      2011 Research-status Report
  • [Patent(Industrial Property Rights)] EM級増幅器及びこれを備えた機器2013

    • Inventor(s)
      宮原良介,関屋大雄
    • Industrial Property Rights Holder
      国立大学法人 千葉大学
    • Industrial Property Rights Type
      特許
    • Filing Date
      2013-03-01
    • Related Report
      2013 Final Research Report
  • [Patent(Industrial Property Rights)] EM級増幅器2011

    • Inventor(s)
      魏秀欽,関屋大雄
    • Industrial Property Rights Holder
      国立大学法人 千葉大学
    • Industrial Property Rights Type
      特許
    • Filing Date
      2011-11-09
    • Related Report
      2013 Final Research Report
  • [Patent(Industrial Property Rights)] E_M級増幅器2011

    • Inventor(s)
      魏秀欽、関屋大雄
    • Industrial Property Rights Holder
      千葉大学
    • Industrial Property Number
      2011-246009
    • Filing Date
      2011
    • Related Report
      2011 Research-status Report

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Published: 2011-08-05   Modified: 2019-07-29  

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