Novel design procedure for Class-E_M power amplifiers Ryosuke Miyahara, Hiroo Sekiya, and Marian K. Kazimierczuk IEEE Transactions on Microwave Theory and Technique, vol.58, no.12, pp.3607-3616, Dec. 2010. [Abstract | pdf] Analysis of class-DE amplifier with linear and nonlinear shunt capacitances at 25% duty ratio Hiroo Sekiya, Natsumi Sagawa, and Marian K. Kazimierczuk IEEE Transactions on Circuits and Systems Part I: Regular Papers, vol.57, no.9, pp.2334-2342, Sept. 2010. [Abstract | pdf] High throughput method for wireless multi-hop networks with string topology using directional antennas (in Japanese) Naofumi Matsumoto, Hiroo Sekiya, Shiro Sakata, Kengo Yagyu IPSJ Journal, vol.51, no.6, pp.1320-1329, June 2010. [Abstract | pdf] Analysis of class DE amplifier with nonlinear shunt capacitances at any grading coefficient for high Q and 25 % duty ratio Hiroo Sekiya, Natsumi Sagawa, and Marian K. Kazimierczuk IEEE Transactions on Power Electronics, vol.25, no.4, pp.924-932, Apr. 2010. [Abstract | pdf] Mixed noise removal for images using the FINDRM with the directional difference and the BSF in the dual-tree complex wavelet transform domain (in Japanese) Song Li, Shingo Kuroiwa, Hiroo Sekiya, Yeqiu Li, Caizhu Wang, and Shiro Sakata IEEJ Transactions on Electronics, Information and Systems, vol.130, no.5, pp.863-872, 2010. [Abstract | pdf]

Isolated class-E switching converter with high-frequency high-efficiency operation for low-voltage/high-current output applications Natsumi Sagawa and Hiroo Sekiya 2010 IEEE Region 10 Conference (TENCON2010), pp.1851-1856, Nov. 2010. [Abstract | pdf] Core geometry coefficient for resonant inductors Hiroo Sekiya and Marian K. Kazimierzuk Electrical Manufacturing Coil Winding & Coating Expo (EMCW2010), Oct. 2010. [Abstract | pdf] Inter-connection of parallel connected class D amplifiers operated at different switching frequencies Yusuke Ishikawa, Ryuta Yamamoto, Hiroyuki Uchiyama, Xiuqin Wei, Hiroo Sekiya, and Tadashi Suetsugu 2010 International Symposium on Nonlinear Theory and its Applications (NOLTA2010), pp.51-54, Sept. 2010. [Abstract | pdf] Design of class-E amplifier using particle swarm optimization   Yuichi Tanji and Hiroo Sekiya 2010 International Symposium on Nonlinear Theory and its Applications (NOLTA2010), pp.517-519, Sept. 2010. [Abstract | pdf] Analysis and design of class-DE amplifier with nonlinear shunt capacitances at any duty ratio Hiroo Sekiya and Marian K. Kazimierczuk 2010 International Symposium on Nonlinear Theory and its Applications (NOLTA2010), pp.362-365, Sept. 2010. [Abstract | pdf] Effect of MOSFET gate-to-drain parasitic capacitance on class-E power amplifier Xiuqin Wei, Hiroo Sekiya, Shingo Kuroiwa, Tadashi Suetsugu, and Marian K. Kazimierczuk 2010 IEEE International Symposium on Circuits and Systems (ISCAS2010) , pp.3200-3203 , June 2010. [Abstract | pdf] Analytical expressions of maximum throughput for long-frame communications in one-way string wireless multihop network Hiroo Sekiya, Yoshihiro Tsuchiya, Nobuyoshi Komuro, and Shiro Sakata Third International Conference on Ubiquitous and Future Networks (ICUFN2010), pp.121-126, June 2010. [Abstract | pdf] Maximum throughput analysis for RTS/CTS-used IEEE 802.11 DCF in wireless multi-hop networks Takuya Sugimoto, Nobuyoshi Komuro, Hiroo Sekiya, Shiro Sakata and Kengo Yagyu International Conference on Computer and Communication Engineering (ICCCE2010), May 2010. [Abstract | pdf] Computer-aided design for class-E switching circuits taking into account optimized inductor designs Natsumi Sagawa, Hiroo Sekiya, and Marian K. Kazimierczuk 2010 Twenty-Fifth IEEE Applied Power Electronics Conference and Exposition (APEC2010), pp.2212-2219, Feb. 2010. [Abstract | pdf]

[Invited Talk] Throughput Analyses for IEEE802.11 Multi-Hop Networks (in Japanese) Hiroo SEKIYA, Nobuyoshi KOMURO, and Shiro SAKATA IEICE Technical Committee on Ad Hoc Networks, vol.110, no.129, pp.19-24, July 2010. [Abstract | pdf] Effect of MOSFET gate-to-drain parasitic capacitance on class-E power amplifie (in Japanese) Xiuqin Wei, Hiroo Sekiya, Tadashi Suetsugu, and Marian K. Kazimierczuk The 23th Workshop on Circuits and Systems in Karuizawa, pp.67 - 72, Apr. 2010. [Abstract | pdf] Analysis of maximum throughput for RTS/CTS-used bidirectional wireless multi-hop networks (in Japanese) Takuya Sugimoto, Nobuyoshi Komuro, Hiroo Sekiya, and Shiro Sakata IEICE Technical Committee on Information Networks, vol.109, no.449, pp.217-222, Feb. 2010. [Abstract | pdf] A MAC protocol for deafness avoidance in wireless multi-hop networks with directional antennas (in Japanese) Atsushi Nagasaki, Hiroo Sekiya, Nobuyoshi Komuro, and Shiro Sakata IEICE Technical Committee on Information Networks, vol.109, no.449, pp.371-376, Feb. 2010. [Abstract | pdf] Evaluation of signal capture effect in unidirectional string networks (in Japanese) Yoshihiro Tsuchiya, Hiroo Sekiya, Nobuyoshi Komuro, and Shiro Sakata IEICE Technical Committee on Information Networks, vol.109, no.449, pp.211-216, Feb. 2010. [Abstract | pdf]