Current Research and Development of Wireless Power Transfer via Radio Waves and the Application

Title： Current Research and Development of Wireless Power Transfer via Radio Waves and the Application

Date：2017/12/5 3:00pm~5:00pm；

Title： Antenna Technologies for WPT via Radio Waves

Date：2017/12/6 10:00am~12:00pm；

Location：逸夫人文馆报告厅

Speaker：Kyoto University Naoki Shinohara

Theory, technologies, applications, and current R&D status of the wireless power transfer (WPT) will be presented. The talk will cover both the far-field WPT via radio waves, especially beam-type and ubiquitous-type WPT, and energy harvesting from broadcasting waves. The research of the WPT was started from the far-field WPT via radio waves, in particular the microwaves in 1960s. In recent years this became a hot topic again due to the rapid growth of wireless devices. Theory and technologies of antenna and circuits will be presented in case of beam-type and ubiquitous-type WPT. The industrial applications and current R&D status of the WPT via radio waves will be also presented.

We must use antennas not only for the MPT but also wireless communication systems. We usually use the antennas in far field. But sometimes for the MPT, we use antennas in radiative near field and

reactive near field to increase beam efficiency. A phased array antenna, which can control a beam direction and can optimize a beam form, is often applied for the MPT because we would like to chase a unwired user. A position detecting technology is also important to chase the unwired user. In this talk, antenna technologies for the MPT, which includes the phased array antenna and direction of arrival (DOA) technoogy, are explained.

Prof. Naoki Shinohara received the B.E. degree in electronic engineering, the M.E. and Ph.D (Eng.) degrees in electrical engineering from Kyoto University, Japan, in 1991, 1993 and 1996, respectively. He was a research associate in Kyoto University from 1996. From 2010, he has been a professor in Kyoto University. He has been engaged in research on Solar Power Station/Satellite and Microwave Power Transmission system. He is IEEE MTT-S Technical Committee 26 (Wireless Power Transfer and Conversion) vice chair, IEEE MTT-S Kansai Chapter TPC member, IEEE Wireless Power Transfer Conference advisory committee member, URSI Commission D vice chair, international journal of Wireless Power Transfer (Cambridge Press) executive editor, technical committee on IEICE Wireless Power Transfer, communications society member, Japan Society of Electromagnetic Wave Energy Applications vice president, Space Solar Power Systems Society board member, Wireless Power Transfer Consortium for Practical Applications (WiPoT) chair, and Wireless Power Management Consortium (WPMc) chair.