Analysis and design of class-E power amplifier with MOSFET parasitic linear and nonlinear capacitances at any duty ratio Mohsen Hayati, Ali Lotfi, Marian K. Kazimierczuk, and Hiroo Sekiya IEEE Transactions on Power Electronics, vol.28, no.11, pp.5222-5232, Nov. 2013. [Abstract | pdf] Performance study of class-E power amplifier with a shunt inductor at subnominal conditios Mohsen Hayati, Ali Lotfi, Marian K. Kazimierczuk, and Hiroo Sekiya IEEE Transactions on Power Electronics, vol.28, no.8, pp.3834-3844, Aug. 2013. [Abstract | pdf]

MOSFET Parasitic Capacitance Effects to Class-DE Power Amplifier Hiroo Sekiya, Xiuqin Wei, and Tomoharu Nagashima 2013 IEEE Electrical Design of Advanced Packaging & System Symposium (EDAPS2013), pp.245-248, Dec. 2013. [Abstract | pdf] Design of high-efficiency inductive-coupled wireless power transfer system with class-DE transmitter and class-E rectifier Kazuhide Inoue, Tomoharu Nagashima, Xiuqin Wei, Hiroo Sekiya The 39th Annual Conference of the IEEE Industrial Electronics Society (IECON 2013), pp.611-616, Nov. 2013. [Abstract | pdf] Analysis of class E_M amplifier with considering non-zero current fall time of drain current Zhicai Zhang, Xiuqin Wei, Hiroo Sekiya, Naoki Oyama, Tadashi Suetsugu, and Tomoharu Nagashima International Future Energy Electronics Conference 2013 (IFEEC2013), pp.338-343, Nov. 2013. [Abstract | pdf] Inductively coupled wireless powertransfer with class-E^2 DC-DC converter Tomoharu Nagashima, Kazuhide Inoue, Xiuqin Wei, Elisenda Bou, Eduard Alarcon, and Hiroo Sekiya The 21th European Conference of Circuits Technology and Devices(ECCTD2013), Sept. 2013. [Abstract | pdf] Delay analysis for IEEE802.11 multi-hop networks taking into account the concurrent-transmission collisions Jin Shi, Kosuke Sanada, Hiroo Sekiya and Shiro Sakata The 2013 International Symposium on Nonlinear Theory and its Applications (NOLTA2013), Sept. 2013. [Abstract | pdf] High-frequency high-efficiency resonant converter with class-E_M inverter and class-E rectifier Hiroo Sekiya, Xiuqin Wei, and Tomoharu Nagashima IEEE 56th Intl Midwest Symposium on Circuits & Systems (MWSCAS2013), pp.33-36, Aug. 2013. [Abstract | pdf] Effect of MOSFET Parasitic Capacitances on EER Transmitter with Class-E Amplifier Xiuqin Wei, Tomoharu Nagashima, Hiroo Sekiya, and Tadashi Suetsugu 2013 IEEE International Symposium on Circuits and Systems (ISCAS2013), pp.913-916, May 2013. [Abstract | pdf] Numerical derivations of locking ranges for injection-locked class-E oscillator Tomoharu Nagashima, Xiuqin Wei, Hisa-Aki Tanaka, and Hiroo Sekiya The 10th IEEE International Conference on Power Electronics and Drive Systems (PEDS2013), pp.1021-1024, Apr. 2013. [Abstract | pdf] Non-saturated and Saturated Throughput Analysis for IEEE 802.11e EDCA Multi-hop Networks Yuta Shimoyamada, Kosuke Sanada, and Hiroo Sekiya The 16th International Symposium on Wireless Personal Multimedia Communications (WPMC), pp.1-6, Apr. 2013. [Abstract | pdf] Negative-bias driving voltage for class-E GaN HEMT oscillator using a diode Youhei Noguchi, Xiuqin Wei, Tomoharu Nagashima, Hiroo Sekiya, and Tadashi Suetsugu 2013 International Workshop on Nonlinear Circuits, Communications and Signal Processing (NCSP'13), pp.201-204, Mar. 2013. [Abstract | pdf] Delay analysis for IEEE802.11 string-topology multi-hop networks Jin Shi, Hiroo Sekiya, Kosuke Sanada, Nobuyoshi Komuro and Shiro Sakata 2013 International Workshop on Nonlinear Circuits, Communications and Signal Processing (NCSP'13), pp.393-397, Mar. 2013. [Abstract | pdf] MAC protocol for ad hoc network using smart antenna with Pulse/Tone exchange Jing Ma, Hiroo Sekiya, Nobuyoshi Komuro, Shiro Sakata The Twelfth International Conference on Networks (ICN'13), Jan. 2013. [Abstract | pdf]

Design of class-E inverter with inductive impedance inverter for achieving ZVS at any load resistance Tomoharu Nagashima, Xiuqin Wei, Tadashi Suetsugu, and Hiroo Sekiya 2013 Japan-Korea Joint Technical Workshop on Semiconductor Power Converter, Oct. 2013. [Abstract | pdf] Resonant Converter with Class E_M Inverter (in Japanese) Hiroo Sekiya, Tomoharu Nagashima, and Xiuqin Wei IEICE Technical Report, pp.35-40, Oct. 2013. [Abstract | pdf] General analytical expressions of throughput and end-to-end delay for wireless multi-hop networks using markov-chain model taking into account hidden node collisions (in Japanese) Kosuke Sanada, Jin Shi, Hiroo Sekiya, and Shiro Sakata IEICE Technical Committee on Complex Communication Science, Aug. 2013. [Abstract | pdf] Design of wireless power transfer system through electromagnetic induction with class-DE transmitter and class-E rectifier (in Japanese) Kazuhide Inoue, Tomoharu Nagashima, Hiroo Sekiya, Hironobu Hatamoto, Satoru Shimizu IEEJ Technical Meeting on Semiconductor Power Converte, July 2013. [Abstract | pdf] Behaviors of EER transmitter with class-E amplifier due to MOSFET parasitic capacitances Xiuqin Wei, Tomoharu Nagashima, Hiroo Sekiya, and Tadashi Suetsugu The 26th WorkShop on Circuits and Systems, pp.380-384, July 2013. [Abstract | pdf] High-frequency high-efficiency resonant converter with class-EM inverter and class-E rectifier (in Japanese) Hiroo Sekiya, Xiuqin Wei, Tomoharu Nagashima The 26th Workshop On Circuits and Systems, pp.273-278, July 2013. [Abstract | pdf] A multiple control channel MAC protocol for multi-channel ad-hoc network (in Japanese) Ryo Manzoku, Hiroo Sekiya, Nobuyoshi Komuro, Shiro Sakata IEICE Technical Committee on Ambient Intelligence and Sensor Networks, July 2013. [Abstract | pdf] Non-saturated and saturated throughput analysis for IEEE 802.11e EDCA string topology wireless multi-hop networks  (in Japanese) Yuta Shimoyamada, Kosuke Sanada, Jin Shi, and Hiroo Sekiya IEICE Technical Committee on Networks Systems, vol.113, no.131, pp.131-136, July 2013. [Abstract | pdf] Design of class-E inverter with inductive impedance inverter for achieving zero voltage switching at any load resistance (in Japanese) Tomoharu Nagashima, Xiuqin Wei, Tadashi Suetsugu, and Hiroo Sekiya IEICE Technical Committee on Nonlinear Problems, vol.113, no.69, pp.71-75, May 2013. [Abstract | pdf] Investigation and analysis of network dynamics in wireless multi-hop networks (in Japanese) Hiroo Sekiya, Kosuke Sanada, Jin Shi, and Shiro Sakata IEICE Technical Committee on Ambient Sensor Network, vol.113, no.38, pp.7-12, May 2013. [Abstract | pdf] A Directional MAC Protocol for Mitigating Frame Collision and Deafness Problem in Wireless Multi-Hop Networks (in Japanese) Tetsuro Okazawa, Jing Ma, Ryo Manzoku, Sho Motegi, Hiroo Sekiya IEICE Technical Committee on Ambient Sensor Network (ASN), May 2013. [Abstract | pdf] Parallel connected class D amplifiers for RF power source applications Tadashi Suetsugu, Xiuqin Wei, Tomoharu Nagashima, and Hiroo Sekiya IEICE Technical Committee on Nonlinear Problems, vol.112, no.487, pp.33-36, Mar. 2013. [Abstract | pdf] Analysis of class-E_M amplier taking into acount drain current fall time (in Japanese) Zhicai Zhang, Tomoharu Nagashima, Xiuqin Wei, and Hiroo Sekiya IEICE Technical Committee on Nonlinear Problems, vol.112, no.487, pp.37-42, Mar. 2013. [Abstract | pdf]