›› 2017, Vol. 37 ›› Issue (2): 11-18.doi: 10.16708/j.cnki.1000-758X.2017.0026

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MicrowavepowertransmissiondemonstrationsystemdesignforSpaceSolarPowerStation

DONG  Ya-Zhou1,2, DONG  Shi-Wei2,*, WANG  Ying1,2, FU  Wen-Li2,LI  Xiao-Jun2,GAO  Shi-Chang1,WEI  Gao1   

  1. 1SchoolofElectronicsandInformation,NorthwesternPolytechnicalUniversity,Xi′an710129,China
    2NationalKeyLaboratoryofScienceandTechnologyonSpaceMicrowave,ChinaAcademyofSpace Technology(Xi′an),Xi′an710100,China
  • Received:2016-11-03 Revised:2017-02-04 Online:2017-06-25 Published:2017-05-18

Abstract: Microwavepowertransmission(MPT)isoneofthekeytechnologiesinSpaceSolarPowerStation(SSPS).Thestate-of-the-artresearchesandvalidationsonlyfocusonindividualtechnologybutlackofcomprehensiveoptimizationforSSPSsystem.AccordingtotheoperatingmodeofSSPS,ademonstrationsystemwasproposedtovalidatemicrowavepowertransmissioninSSPS.ThetransmittingantennaarrayandrectennaarrayweredesignedbyusingintegratedprocessingwithapproximateGaussianfielddistributionintransmittingantennaarrayandlowreflectiondesigninrectennaarray.Thebeamcontrolmethodinthesystemwasbasedondirectionofarrivalestimationbysendingpilotsignalandbeamsynthesisbycontrollingthephaseshiftersinthetransmittingantennaarray.Theanalyzedbeamcollectingefficiencyofdemonstrationsystemis94.2%,about17.6%higherthanthetraditionaluniformdistributionsystem.ThedemonstrationsystemcomprehensivelysimulatestheMPTofSSPSinseveralways,includingsystemscaleminification,transmittingantennafielddistribution,etc,powerdensityandbeamcontrollinganditcanbethepromotionofSSPSdevelopment.

Key words: SpaceSolarPowerStation, microwavepowertransmission, fielddistribution, rectennaarray