Research of Microwave Power Transmission for Various Applications

We can apply the microwave power transmission technologies of the SPS for various application of commercial use. In our laboratory, we proposed some MPT application and carried out experiments as follows ;

E  MPT for the fuel-free airplane

We have succeeded the fuel-free airplane experiment with 1.2kW phased array as microwave power transmitter called MILAX (MIcrowave Lifted Airplane eXperiment). Project leader was Prof. Hiroshi Matsumoto and theproject was carried out with Kyoto University, Ko‚×University, CRL (present NICT), Nissan motor co. (present  IHI Aerospace), and Fuji heavy industry. (movie)B


E  In-house Ubiquitous Power Source

We proposed the concept of the ubiquitous power source in the room with microwave power to charge mobile phones without wire. Our experiment is the first one in the world. We develop high efficient rectenna for weak power in the ubiquitous power source and study suitable antenna system to reduce the microwave power.

E   Ubiquitous Power Source in emergency situation

We have succeeded the MPT experiment from airship above 50m to charge mobile phones with the wireless power in 2009. We used tow Phase Controlled Magnetrons. This is the first experiment of the MPT from the above in the world.


E  Wireless charging system to Electric Vehicle

We carry out the MPT experiments to charge the EV in order to reduce the mount and weight of batteries and to increase the utilization and safety of the charging of the EV, and to make battery-less EV with the MPT charging for moving EV. We have developed high efficient plane-type rectenna with high power microwave. We have also succeeded to increase efficient from Tx to Rx antenna.


E  Wireless Building with the MPT

This is new concept in which we use conventional deck plate as waveguide to distribute the microwave power and we pick up DC power through the rectenna outlet. This concept was proposed by Kashima co.. The project was carried out by Kashima co., Kyoto University, Tokushima University, and Okayama University. We have developed the first GaN diode for the rectenna in the world by Kyoto University and Tokushima University.