Design of class DE inverter with second order constant K band-pass filter Motoki Katayama, Hiroyuki Hase, Hiroo Sekiya, Jianming Lu, and Takashi Yahagi IEICE Trans. on Fundamentals of Electronics, Communications and Computer Sciences, vol.E90-A, no.10, pp.2132-2140, Oct. 2007. [Abstract | pdf] Post-Processing for Restoring Edges and Removing Artifacts of Low Bit Rates Wavelet-Based Image Ke Du, Jianming Lu, Hiroo Sekiya, Takashi Yahagi IEEJ Transactions on Electronics, Information and Systems, vol.127, no.6, pp.928-936, Aug. 2007. [Abstract | pdf] Denoising images with Poisson noise using M-transformation in wavelet domain Yeqiu Li, Jianming Lu, Ling Wang, and Takashi Yahagi Journal of Signal Processing, vol.11, no.4, pp.281-284, July 2007. [Abstract | pdf] Multiuser detection with branch-and-bound-based algorithm using user grouping for synchronous CDMA (in Japanese) Yusuke Takano, Hiroo Sekiya, Jianming Lu, and Takashi Yahagi IEICE Transactions on Fundamentals of Electronics Communications and Computer Sciences, vol.90-A, no.4, pp.305-314, Apr. 2007. [Abstract | pdf]

Analysis and design of class DE amplifier with nonlinear shunt capacitance Hiroo Sekiya, Takayuki Watanabe, Tadashi Suetsugu, and Marian K. Kazimierczuk The 7th International Conference on Power Electronics and Drive Systems (PEDS2007), pp.937-942, Nov. 2007. [Abstract | pdf] Implementation of design tool for class E switching circuits using Spice Hiroo Sekiya, Jianming Lu, and Takashi Yahagi 2007 International Symposium on Nonlinear Theory and its Applications (NOLTA2007), pp.509-512, Sept. 2007. [Abstract | pdf] Sliding mode control using neural networks for SISO nonlinear systems Muhammad Yasser, Agus Trisanto, Ayman Haggag, Takashi Yahagi, Hiroo Sekiya, and Jianming Lu International Conference on Instrumentation, Control and Information Technology (SICE2007), pp.980-984, Sept. 2007. [Abstract | pdf] Simple adaptive control for SISO nonlinear systems using multiple neural networks Muhammad Yasser, Agus Trisanto, Ayman Haggag, Takashi Yahagi, Hiroo Sekiya, and Jianming Lu International Conference on Instrumentation, Control and Information Technology (SICE2007), pp.1287-1292, Sept. 2007. [Abstract | pdf] Motion segmentation based on a new genetic algorithm Yuzhen Li , Mingying Fan, Ghoneim Mohamed, Jianming Lu, Hiroo Sekiya, and Takashi Yahagi 2007 RISP International Workshop on Nonlinear Circuits and Signal Processing (NCSP2007), pp.543-546, Mar. 2007. [Abstract | pdf]

An interleaved class E^2 dc/dc converter (in Japanese) Motoki Katayama, Hiroo Sekiya, Jianming Lu, and Takashi Yahagi IEEJ Workshop on Electronic Circuits, vol.ECT - 07 - 91, pp.15-20, Dec. 2007. [Abstract | pdf] Analysis and experiments of maximum throughput in wireless multi-hop networks (in Japanese) Masahiko Inaba, Yoshihiro Tomita, Masaki Matsumoto, Hiroo Sekiya, Takashi Yahagi, Shiro Sakata, and Kengo Yagyu IEICE Technical Committee on Radio Communication Systems, pp.55-60, Dec. 2007. [Abstract | pdf] Interleaved class E^2 dc/dc converter with phase control (in Japanese) Motoki Katayama, Hiroo Sekiya, Jianming Lu, and Takashi Yahagi IEICE Technical Committee on Energy Engineering in Electronics and Communication, pp.7-12, Nov. 2007. [Abstract | pdf] Effect of nonlinear output capacitance in class DE amplifier (in Japanese) Hiroo Sekiya, Takayuki Watanabe, Tadashi Suetsugu, and Takashi Yahagi IEICE Technical Committee on Energy Engineering in Electronics and Communication, vol.EE 2007-43, pp.51-56, Nov. 2007. [Abstract | pdf] Design of class DE amplifier with nonlinear shunt capacitance with any output Q (in Japanese) Tooru Ezawa, Hiroo Sekiya, Jianming Lu, and Takashi Yahagi The 20th Workshop on Circuits and Systems in Karuizawa, pp.423-428, Apr. 2007. [Abstract | pdf] A interleaved phase controll class E^2 dc/dc converter (in Japanese) Motoki Katayama, Hiroo Sekiya, Jianming Lu, and Takashi Yahagi The 20th Workshop on Circuits and Systems in Karuizawa, pp.441 - 446, Apr. 2007. [Abstract | pdf] Imprementation of design tool for class E switching circiuts using SPICE (in Japanese) Hiroo Sekiya, Tooru Ezawa, and Takashi Yahagi IEICE Technical Committee on Nonlinear Problems, vol.NLP2007-04, pp.37-42, Apr. 2007. [Abstract | pdf] Design of class DE amplifier with nonlinear shunt capacitance with any output Q (in Japanese) Tooru Ezawa, Hiroo Sekiya, Jianming Lu, and Takashi Yahagi IEICE Technical Committee on Energy Engineering in Electronics and Communication, vol.106, no.562, pp.41-46, Feb. 2007. [Abstract | pdf] Numerical calculation method for class E switching circuit (in Japanese) Tooru Ezawa, Hiroo Sekiya, Jianming Lu, and Takashi Yahagi IEICE Technical Committee on Energy Engineering in Electronics and Communication, pp.59-64, Jan. 2007. [Abstract | pdf] Design and evaluation of class DE inverter with band-pass filter (in Japanese) Motoki Katayama, Hiroyuki Hase, Hiroo Sekiya, Jianming Lu, and Takashi Yahagi IEICE Technical Committee on Energy Engineering in Electronics and Communication, pp.133-138, Jan. 2007. [Abstract | pdf] Design of class DE amplifire with nonliear capacitance (in Japanese) Takayuki Watanabe, Hiroo Sekiya, Tadashi Suetsugu, and Takashi Yahagi IEICE Technical Committee on Nonlinear Problems, vol.NLP2006-120, pp.51-56, Jan. 2007. [Abstract | pdf]