Development Research on the practical power generation and transmission panels for the Solar Power Satellite and Hawaii experiment on the microwave power transmissio

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This research project is aimed to develop the Solar Power Satellite, which can supply clean and inexhaustible electricity to the ground from the space. The practical sandwich panels are composed of the solar cells to generate the electricity on the one side and of the active phased array antenna to transmit microwave power to the ground. We succeeded in development of the new antenna elements and GaN FET amplifiers to convert the electricity to the microwave. We also succeeded in obtaining the valuable data on the microwave propagation by the long distant power transmission experiment in Hawaii and the observations to receive the microwave from the geosynchronous satellite.