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    • Activities Results of Experiments for Space Solar Power Systems at USEF

    Paper number

    IAC-06-C3.3.02

    Author

    Mr. Shoichiro Mihara, Institute for Unmanned Space Experiment Free Flyer (USEF), Japan

    Coauthor

    Mr. Takashi Saito, Institute for Unmanned Space Experiment Free Flyer (USEF), Japan

    Coauthor

    Mr. Yutaro Kobayashi, Institute for Unmanned Space Experiment Free Flyer (USEF), Japan

    Coauthor

    Mr. Hiroshi Kanai, Institute for Unmanned Space Experiment Free Flyer (USEF), Japan

    Year

    2006

    Abstract
    Institute for Unmanned Space Experiment Free Flyer (USEF) has been studying wireless power transmission under the contract of Ministry of Economy, Trade and Industry (METI) from FY2004 to FY2006. In the study, we have focused on the microwave power transmission as a key technology for the realization of future space solar power system. Results of this study together with our past activities such as SSPS system study will be presented in the paper.
1) USEF has been studying SSPS system for more than a decade. The result of these studies have been explained and presented in the past presentation. The latest system candidate is the sandwich panel having solar cells on one side and phased array antenna on the other side. The study has been done for its dynamic stability, construction method on orbit, operation, economical aspect and development scenario. 
2) Reflection from receiving antenna system (rectenna) has been measured. Direct reflection and harmonics emission from the rectenna for 2.45GHz band and 5.8GHz band have been measured. The results of the test will be presented in the paper. 
3) Investigation of microwave power system for the ground application was also performed. Beam steering of those systems are proposed and explained.
4) Micro wave transmission to the moving object is one of the spin off fields of SSPS technology. The Micro-wave transmission to the rover has been planned. Light weight rectenna was designed and tested. Light weight transmission panel has also been designed and will be tested. The lower weight to watt level is necessary to achieve to reach a goal for Large SSPS. The total plan of the experiment will be explained in this paper.
5) Environmental and safety assessment of microwave power transmission is also the theme of current investigation. The assessment has been performed for acquisition of public acceptance for the future microwave power transmission system. 
6) We are planning to step forward to the development of the future wireless microwave power transmission. The basic plan for the development will be shown in this paper.
    Abstract document

    IAC-06-C3.3.02.pdf

    Manuscript document

    IAC-06-C3.3.02.pdf (🔒 authorized access only).

    To get the manuscript, please contact IAF Secretariat.