Naoki Shinohara is a professor and research associate with Kyoto University. Previously he was an IEEE MTT-S Distinguish Microwave Lecturer and an IEEE MTT-S Technical Committee 25 (Wireless Power Transfer and Conversion) Former Chair. Shinohara is IEEE MTT-S AdCom member, IEEE MTT-S MGA (Member Geographic Activities) Region 10 regional coordinator, IEEE WPT Initiative Member, IEEE MTT-S Kansai Chapter TPC member, IEEE Wireless Power Transfer Conference founder and Steering committee member, URSI commission D chair, international journal of Wireless Power Transfer (Hindawi) executive editor, the first chair and technical committee member on IEICE Wireless Power Transfer, Japan Society of Electromagnetic Wave Energy Applications adviser and former chair, Space Solar Power Systems Society chair, Wireless Power Transfer Consortium for Practical Applications (WiPoT) chair, and Wireless Power Management Consortium (WPMc) chair. He received his B.E. degree in electronic engineering, and the M.E. and Ph.D. (Eng.) degrees in electrical engineering from Kyoto University, Japan. His books are“Wireless Power Transfer via Radiowaves” (ISTE Ltd. and John Wiley & Sons, Inc.,“Recent Wireless Power Transfer Technologies Via Radio Waves (ed.)” (River Publishers), and “Wireless Power Transfer: Theory, Technology, and Applications (ed.)” (IET), and some Japanese text books of WPT.
Theory, technologies, applications, and current business of the wireless power transfer (WPT) via microwaves will be presented. The WPT via microwaves are roughly classified a wide beam WPT and a narrow beam WPT. A new radio regulation of the wide beam WPT via microwaves is enacted by Japanese government in May, 2022 and new WPT business started in Japan. Some startup companies have already produced commercial wide beam WPT systems in US with US radio regulation. For the future, there are a lot of interesting R&D for the narrow beam WPT with higher frequency and beam forming in the world. Useful theory and technology of the wide beam WPT and the narrow beam WPT for new WPT business and future WPT applications will be presented.