Investigation of not-in-phase synchronization on coupled system of four oscillators (in Japanese) Hiroo Sekiya, Tetsuya Yoshinaga, Seiichiro Moro, Shinsaku Mori, Iwao Sasase IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, vol.J84-A, no.1, pp.42-52, Jan. 2001. [Abstract | pdf] Resonant dc/dc converter with class DE inverter and class E rectifier using thinned-out method (deleting some of pulses to the rectifier) Hirotaka Koizumi, Hiroo Sekiya, Mitsuhiro Matsuo, Shinsaku Mori, and Iwao Sasase IEEE Transactions on Circuits and Systems Part I: Regular Papers, vol.48, no.1, pp.123-126, Jan. 2001. [Abstract | pdf]

Computation of design values for class E amplifier without using waveform equations H. Sekiya, I. Sasase, S. Mori, J. Lu, and T. Yahagi 44th IEEE International Midwest Symposium on Circuits and Systems (MWSCAS2001), pp.960-963, Aug. 2001. [Abstract | pdf]

Design of generalized class E^2 dc/dc converter (in Japanese) Hiroo Sekiya, Jianming Lu, and Takashi Yahagi IEICE Technical Committee on Energy Engineering in Electronics and Communication, pp.33-40, Sept. 2001. [Abstract | pdf]