1. Graduate School of Science and Technology, Shizuoka University, 3-5-1 Johoku, Naka-ku, Hamamatsu, 432-8011, Japan
2. FDK Corporation, 2281 Washizu, Kosai, 431-0495, Japan
3. Department of Electronics, Kyushu University, Fukuoka 819-0395, Japan
4. Department of Energy Science and Technology, Kyoto University, Kyoto 606-8501, Japan
5. Institute for Automation and Control Processes of Far Eastern Branch of Russian Academy of Science, 5 Radio St., 690041 Vladivostok, Russia
6. Faculty of Engineering, Shizuoka University, 3-5-1 Johoku, Naka-ku, Hamamatsu 432-8561, Japan