Analysis and design of loosely inductive coupled wireless power transfer system based on class-E^2 DC-DC converter for efficiency enhancement Tomoharu Nagashima, Xiuqin Wei, Elisenda Bou, Eduard Alarcon, Marian K. Kazimierczuk, and Hiroo Sekiya IEEE Transactions on Circuits and Systems Part I: Regular Papers, vol.62, no.11, pp.2781-2791, Nov. 2015. [Abstract | pdf] Steady-state analysis and design of class-DE inverter at any duty ratio Hiroo Sekiya, Xiuqin Wei, Tomoharu Nagashima, and Marian K. Kazimierczuk IEEE Transactions on Power Electronics, vol.30, no.7, pp.3685-3694, July 2015. [Abstract | pdf] Design of a DC-DC converter with phase-controlled class-D ZVS invertrer Yuta Yamada, Tomoharu Nagashima, Yoshifumi Ibuki, Yoshiki Fukumoto, Tatsuya Ikenari, and Hiroo Sekiya IEEE Journal on Emerging and Selected Topics in Circuits and Systems(JETCAS), pp.354-363, July 2015. [Abstract | pdf] End-to-end delay analysis for IEEE 802.11 string-topology multi-hop networks Kosuke Sanada, Jin Shi, Nobuyoshi Komuro, and Hiroo Sekiya IEICE Transactions on Communications, vol.E98-B, no.7, pp.1284-1293, July 2015. [Abstract | pdf] End-to-end throughput analysis for IEEE 802.11e EDCA string-topology wireless multi-hop networks Yuta Shimoyamada, Kosuke Sanada, Nobuyoshi Komuro, and Hiroo Sekiya Nonlinear Theory and Its Applications, IEICE, vol.E6-N, no.3, pp.410-432, July 2015. [Abstract | pdf] Generalized design considerations and analysis of class-E amplifier for sinusoidal and square input voltage waveform Mohsen Hayati, Ali Lotfi, Marian K. Kazimierczuk, and Hiroo Sekiya IEEE Transactions on Industrial Electronics, vol.62, no.1, pp.211-220, Jan. 2015. [Abstract | pdf]

Resonant converter designs applying computation algorithms of bifurcation values Yuta Yamada, Tomoharu Nagashima, and Hiroo Sekiya 2015 International Symposium on Nonlinear Theory and its Applications (NOLTA2015), pp.221-224, Dec. 2015. [Abstract | pdf] Throughput and delay analysis of IEEE802.11 string-topology multi-Hop networks Kosuke Sanada, Nobuyoshi Komuro, and Hiroo Sekiya The 2015 International Symposium on Nonlinear Theory & its Applications (NOLTA 2015), no.419-422, Dec. 2015. [Abstract | pdf] Class-E^2 inductive power transfer system with pre- and post-regulators Tomoharu Nagashima, Xiuqin Wei, and Hiroo Sekiya 4th International Conference on Renewable Energy Research and Applications (ICRERA2015), Nov. 2015. [Abstract | pdf] Class-D inverter with MOSFET nonlinear parasitic capacitance Koyo Yonekura, Xiuqin Wei, Tomoharu Nagashima, Hiroo Sekiya, and Tadashi Suetsugu 4th International Conference on Renewable Energy Research and Applications (ICRERA2015), Nov. 2015. [Abstract | pdf] A design of inductively coupled wireless power transfer system with coupling coil optimization Takumi Noda, Tomoharu Nagashima, and Hiroo Sekiya The 37th International Telecommunications Energy Conference (INTELEC2015), pp.864-869, Oct. 2015. [Abstract | pdf] Analytical design for resonant inductive coupling wireless power transfer system with class-E inverter and class-DE rectifier Tomoharu Nagashima, Xiuqin Wei, Elisenda Bou, Eduard Alarcon, and Hiroo Sekiya 2015 IEEE International Symposium on Circuits and Systems (ISCAS2015), pp.686-689, May 2015. [Abstract | pdf] Throughput analysis of wireless networks with Tethering function Minh Huy Bui, Kokuse Sanada, Nobuyoshi Komuro, Shigeo Shioda, Shiro Sakata, Kazunori Miyoshi, Tutomu Murase, and Hiroo Sekiya 2015 IEEE Wireless communications and networking conference (WCNC2015), pp.125-130, Mar. 2015. [Abstract | pdf] End-to-end throughput and delay analysis for IEEE 802.11 string topology multi-hop network using markov-chain model Kosuke Sanada, Nobuyoshi Komuro, and Hiroo Sekiya The 2015 IEEE 25th International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC2015), pp.1887-1891, 2015. [Abstract | pdf] Route construction method for 6LoWPAN/RPL wireless sensor network using mobile sink nodes Shun Wakatsuki, Shiro Sakata, Nobuyoshi Komuro, Tingrui Pei, Young-june Choi, and Hiroo Sekiya The 11th International Conference on Multimedia Information Technology and Applications (MITA2015), 2015. [Abstract | pdf] End-to-end throughput analysis for IEEE 802.11 string-topology multi-hop networks with two-way flows Kosuke Sanada, Nobuyoshi Koumuro, and Hiroo Sekiya The 11th International Conference on Multimedia Information Technology and Applications (MITA2015), 2015. [Abstract | pdf]

[Invited Talk] Throughput and Delay Analyses for Wireless Multi-hop Networks (in Japanese) Hiroo Sekiya IEICE Technical Committee on Network Systems and Radio Communication Systems, vol.115, no.368, NS2015-139, pp.71-76, Dec. 2015. [Abstract | pdf] Throughput analysis of tetheing networks with different frame-size flow (in Japanese) Yin Wan, Kosuke Sanada, Nobuyoshi Komuro, Gen Motoyoshi, Norio Yamagaki, Shigeo Shioda, Shiro Sakata, and Hiroo Sekiya IEICE Technical Committee on Complex Communication Science, vol.115, no.300, pp.81-86, Nov. 2015. [Abstract | pdf] Throughput analysis of wireless multihop networks taking into account transmission rate (in Japanese) Tomoo Tanii, Kosuke Sanada, Nobuyoshi Komuro, and Hiroo Sekiya IEICE Technical Committee on Complex Communication Science, vol.115, no.300, pp.93-98, Nov. 2015. [Abstract | pdf] Development Visualization Simulator of Power Flow Calculation (in Japanese) Kazuhiro Okabe, and Hiroo Sekiya IEICE Technical Committee on Complex Communication Science, vol.115, no.178, pp.51-56, Aug. 2015. [Abstract | pdf] A comprehensive design method of inductively coupled wireless power transfer system for maximizing overall efficiency (in Japanese) Takumi Noda, Tomoharu Nagashima, and Hiroo Sekiya IEICE Technical Committee on Wireless Power Transfer, vol.115, no.129, pp.31-36, July 2015. [Abstract | pdf] Consideration and implementation of pulse density modulation control for class-E rectifier (in Japanese) Go Yonezawa, Tomoharu Nagashima, Xiuqin Wei, and Hiroo Sekiya IEICE Technical Committee on Nonlinear Problems, vol.114, no.484, pp.57-61, Mar. 2015. [Abstract | pdf] A MAC protocol for mitigating exposed node problem in MIMO ad-hoc networks  (in Japanese) Tetsuro Okazawa, Nobuyoshi Komuro, Jing Ma, Kosuke Sanada, and Hiroo Sekiya IEICE Technical Committee on Ambient Sensor Network (ASN), vol.114, no.480, pp.1-6, Mar. 2015. [Abstract | pdf] Output control for class-E^2 DC-DC converter achieving zero voltage switching (in Japanese) Tomoharu Nagashima, Xiuqin Wei, and Hiroo Sekiya IEICE Technical Committee on Nonlinear Problems, vol.114, no.414, pp.143-146, Jan. 2015. [Abstract | pdf] Throughput analysis of wireless networks with Tethering function (in Japanese) Minh Huy Bui, Kokuse Sanada, Nobuyoshi Komuro, Shigeo Shioda, Shiro Sakata, Kazunori Miyoshi, Tutomu Murase, and Hiroo Sekiya IEICE Technical Committee on Ambient Intelligence and Sensor Networks, pp.231-236, Jan. 2015. [Abstract | pdf] Throughput and delay analyses for wireless multi-hop networks (in Japanese) Hiroo Sekiya, and Kousuke Sanada IEICE Technical Committee on Ambient Intelligence and Sensor Networks, vol.114, no.418, pp.225-229, Jan. 2015. [Abstract | pdf]