Designandtestofmicrowavepowertransmissionsystem

doi:10.16708/j.cnki.1000-758X.2017.0028

Chinese Space Science and Technology ›› 2017, Vol. 37 ›› Issue (2): 19-27.doi: 10.16708/j.cnki.1000-758X.2017.0028

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Designandtestofmicrowavepowertransmissionsystem

WANG Ying^1，2，*, WEI Gao¹, DONG Ya-Zhou^1，2, DONG Shi-Wei², FU Wen-Li², LI Xiao-Jun², RAN Li-Xin³

1CollegeofElectronicInformation，NorthwesternPolytechnicalUniversity，Xi′an710072，China
2ChinaAcademyofSpaceTechnology（Xi′an），Xi′an710000，China
3ZhejiangUniversity，Hangzhou310027，China

Received:2016-11-22 Revision received:2017-01-20 Online:2017-05-18 Published:2017-06-25

Abstract

Abstract: MicrowavepowertransmissionservedasthecoretechnologyoftheSpaceSolarPowerSatellite（SSPS）wasstudied.Therectifyingsurfacewasresearchedbasedontheconceptofperfectlymatchedlayertosolvetheproblemthatbeamcollectionefficiencywoulddeclinewithdistanceawayfromtransmittingantennabecauseofthespreadofbeam，bychangingperfectlymatchedlayerstructureconjugatematchbetweenantennaoutputimpedanceandrectifiercircuitinputimpedance.Therectifyingsurfaceexhibitsastrongrestraintohighorderharmonics，withouttheneedofRFfilterwhichisanimportantelementforthetraditionalrectenna，sothecircuitstructureissimpleandhighconversionefficiencyenergycanberealized.Andundertheproposedlimitforthecenter-of-beampowerdensitytoassureenvironmentalhealthandsafetyformicrowavetransmission，anexperimentalsystemwithsolidpoweramplifierat5.8GHzwasconstructedandtested，andthemaximumconversionefficiencyis57.7%.TheexperimentresultsshowthatthedesignedmicrowavepowertransmissionsystemisbenefitforgrounddemonstrationtestinginminiatureversionandbuildingofSSPSinfuture.

Key words: SpaceSolarPowerSatellite, microwavepowertransmission, antenna, perfectlymatchedlayer, rectifier, centerofbeam, powerdensitiy

WANG Ying, WEI Gao, DONG Ya-Zhou, DONG Shi-Wei, FU Wen-Li, LI Xiao-Jun, RAN Li-Xin. Designandtestofmicrowavepowertransmissionsystem[J]. Chinese Space Science and Technology, 2017, 37(2): 19-27.

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Designandtestofmicrowavepowertransmissionsystem

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