Locking range derivations for injection-locked class-E oscillator applying phase reduction theory
Tomoharu Nagashima, Xiuqin Wei, Hisa-Aki Tanaka, and Hiroo Sekiya
IEEE Transactions on Circuits and Systems Part I: Regular Papers, vol.61, no.10, pp.2904-2911, Oct. 2014.
[Abstract | pdf]

Analysis, Design and Implementation of Class-E ZVS Power Amplifier with MOSFET Nonlinear Drain-to-Source Parasitic Capacitance at Any Grading Coefficient
Mohsen Hayati, Ali Lotfi, Marian K. Kazimierczuk, and Hiroo Sekiya
IEEE Transactions on Power Electronics, vol.29, no.9, pp.4989-4999, Sept. 2014.
[Abstract | pdf]

Waveform equations, output power, and power conversion efficiency for class-E inverter outside nominal operation
Tomoharu Nagashima, Xiuqin Wei, Tadashi Suetsugu, Marian K. Kazimierczuk, and Hiroo Sekiya
IEEE Transactions on Industrial Electronics, vol.61, no.4, pp.1799-1810, Apr. 2014.
[Abstract | pdf]

Modeling and analysis of class-E amplifier with a shunt inductor at sub-nominal operation for any duty ratio
Mohsen Hayati, Ali Lotfi, Marian K. Kazimierczuk, and Hiroo Sekiya
IEEE Transactions on Circuits and Systems Part I: Regular Papers, vol.61, no.4, pp.987-1000, Apr. 2014.
[Abstract | pdf]

Analysis and design of class-E_M power amplifier
Xiuqin Wei, Tomoharu Nagashima, Marian K. Kazimierczuk, Hiroo Sekiya, and Tadashi Suetsugu
IEEE Transactions on Circuits and Systems Part I: Regular Papers, vol.61, no.4, pp.976-986, Apr. 2014.
[Abstract | pdf]

アドホックネットワークにおいてPulse/Tone信号を用いた制御チャネル型マルチチャネルMACプロトコル
満足 亮, 関屋 大雄, 馬 ジン, 眞田 耕輔, 阪田 史郎
電子情報通信学会論文誌B, vol.J97-B, no.4, pp.344-353, Apr. 2014.
[Abstract | pdf]

[Invited Talk] Analytical design procedure for resonant inductively coupled class-E^2 wireless power transfer system
Tomoharu Nagashima, Xiuqin Wei, and Hiroo Sekiya
2014 IEEE Workshop on Nonlinear Circuit Networks (NCN2014), Dec. 2014.
[Abstract | pdf]

Numerical algorithm for distribution-map derivations of switching converters
Yuta Yamada, Tomoharu Nagashima, Yoshifumi Ibuki, Yoshiki Fukumoto, and Hiroo Sekiya
The 40th Annual Conference of the IEEE Industrial Electronics Society (IECON 2014), pp.4338-4344, Nov. 2014.
[Abstract | pdf]

Analytical design procedure for resonant inductively coupled wireless power transfer system with class-DE inverter and class-E rectifier
Tomoharu Nagashima, Xiuqin Wei, and Hiroo Sekiya
2014 IEEE Asia Pacific Conference on Circuits and Systems (APCCAS2014),, pp.288-291, Nov. 2014.
[Abstract | pdf]

A loosely coupled inductive wireless power transfer systems with class-E transmitter and multiple receivers
Hiroo Sekiya, Kazuhide Inoue, Tomoharu Nagashima, Tadashi Suetsugu, Shotaro Kuga, Xiuqin Wei, Kenichi Shirota, Hironobu Hatamoto, and Satoru Shimizu
2014 IEEE Energy Conversion Congress and Exposition (ECCE2014), pp.675-680, Sept. 2014.
[Abstract | pdf]

Operation of class-E^2 DC-DC converter outside nominal conditions
Tomoharu Nagashima, Xiuqin Wei, and Hiroo Sekiya
2014 International Symposium on Nonlinear Theory and its Applications (NOLTA2014), pp.478 - 481, Sept. 2014.
[Abstract | pdf]

Analytical design procedure for resonant inductively coupled wireless power transfer with class-E^2 DC-DC converter
Tomoharu Nagashima, Kazuhide Inoue, Xiuqin Wei, Elisenda Bou, Eduard Alarcon, Marian K. Kazimierczuk, and Hiroo Sekiya
2014 IEEE International Symposium on Circuits and Systems (ISCAS2014), pp.113-116, June 2014.
[Abstract | pdf]

Multiphase resonant inverters with common resonant circuit
Mariusz Bojarski, Dariusz Czarkowski, Francisco de Leon, Qijun Deng, Marian K. Kazimierczuk, and Hiroo Sekiya
2014 IEEE International Symposium on Circuits and Systems (ISCAS2014), pp.2445-2448, June 2014.
[Abstract | pdf]

Maximum throughput analysis for IEEE 802.11 string topology wireless multi-hop networks taking into account hidden nodes using Markov-chain model
Kosuke Sanada, Hiroo Sekiya, Nobuyoshi Komuro, and Shiro Sakata
2014 International Workshop on Nonlinear Circuits, Communications and Signal Processing (NCSP'14), pp.77-80, Mar. 2014.
[Abstract | pdf]

Class E^2 resonant non-radiative wireless power transfer link: a design-oriented joint circuit-system co-characterization approach
Elisenda Bou,Tomoharu Nagashima, Hiroo Sekiya, and Eduard Alarcon
2014 IEEE International Multi-Conference on Systems, Signals and Devices (SSD2014), pp.1-4, Feb. 2014.
[Abstract | pdf]

Analytical design of resonant inductively coupled wireless power transfer system with class-E2 DC-DC converter
Tomoharu Nagashima, Xiuqin Wei, and Hiroo Sekiya
The 1st Symposium on Semiconductor Power Conversion (S2PC), Oct. 2014.
[Abstract | pdf]

A loosely coupled wireless power transfer system with class-DE transmitter and multiple receivers
Kazuhide Inoue, Tomoharu Nagashima, and Hiroo Sekiya
The 1st Symposium on Semiconductor Power Conversion (S2PC), Oct. 2014.
[Abstract | pdf]

Analytical expressions of end-to-end throughput for IEEE 802.11e EDCA wireless multi-hop networks
Yuta Shimoyamada, Kosuke Sanada, Nobuyoshi Komuro, and Hiroo Sekiya
3rd Japan-Korea Joint Workshop on Complex Communication Sciences (JKCCS' 14), Oct. 2014.
[Abstract | pdf]

Prolonging network lifetime for 6LoWPAN/RPL wireless sensor network using mobile sink with dynamic sojourn time
Shun Wakatsuki, Nobuyoshi Komuro, Hiroo Sekiya, and Shiro Sakata
3rd Japan-Korea Joint Workshop on Complex Communication Sciences (JKCCS' 14), Oct. 2014.
[Abstract | pdf]

Analytical expression for throughput and transmission delay of IEEE 802.11 string topology networks with two-way flows
Kosuke Sanada, Yuta Shimoyamada, Yuji Ikeda, Nobuyoshi Komuro, and Hiroo Sekiya
3rd Japan-Korea Joint Workshop on Complex Communication Sciences (JKCCS' 14), Oct. 2014.
[Abstract | pdf]

Optimal power flow problem with considering CO2 emission in power system
Kazuhiro Okabe, Hiroaki Kurokawa, and Hiroo Sekiya
3rd Japan-Korea Joint Workshop on Complex Communication Sciences (JKCCS' 14), Oct. 2014.
[Abstract | pdf]

最適状態外におけるE^2級DC-DCコンバータの定常状態解析
永島和治, 魏秀欽, 関屋大雄
第27回　回路とシステムワークショップ, pp.7-12, Aug. 2014.
[Abstract | pdf]

IEEE 802.11 直線状無線マルチホップネットワークにおけるスループット および遅延における統一的解析表現の導出
眞田 耕輔, 下山田 祐太, 池田 雄司, 関屋 大雄, 小室 信喜
電子情報通信学会ネットワークシステム研究会, vol.114, no.163, pp.155-160, July 2014.
[Abstract | pdf]

6LoWPAN/RPL無線センサネットワークにおける 複数シンクノードを用いた経路構築手法
若月 峻, 小室 信喜, 関屋 大雄
電子情報通信学会知的環境とセンサネットワーク研究会, vol.114, no.166, pp.37-42, July 2014.
[Abstract | pdf]

E級増幅器を用いたEER送信機におけるMOSFETの非線形容量の影響
魏 秀欽, 永島 和治, 関屋 大雄, 末次 正
電子情報通信学会非線形問題研究会, pp.63-67, May 2014.
[Abstract | pdf]

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
Tomoharu Nagashima, Kazuhide Inoue, Xiuqin Wei, and Hiroo Sekiya
電子情報通信学会無線電力伝送時限研究会, pp.23-27, Jan. 2014.
[Abstract | pdf]

バックオフによる優先制御を考慮した隠れ端末存在環境におけるIEEE 802.11e 無線マルチホップネットワークスループット解析
下山田 祐太, 眞田 耕輔, 関屋 大雄, 小室 信喜, 阪田 史郎
電子情報通信学会知的環境とセンサネットワーク研究会, vol.113, no.399, pp.169-174, Jan. 2014.
[Abstract | pdf]

無線センサネットワークにおけるスモールワールドモデルに基づく経路構築方式
茂木 翔，関屋 大雄，小室 信喜，阪田 史郎
電子情報通信学会知的環境とセンサネットワーク研究会, vol.113, no.399, pp.175-178, Jan. 2014.
[Abstract | pdf]