中国空间科学技术

Chinese Space Science and Technology ›› 2017, Vol. 37 ›› Issue (2): 66-72.doi: 10.16708/j.cnki.1000-758X.2017.0033

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Equivalentpowerdeterminationforsingleeventmulticarriermultipactorbasedona modifieddifferentialevolutionalgorithm

 WANG  Xin-Bo1,2, ZHANG  Xiao-Ning1, LI  Yong-Dong1, LIU  Chun-Liang1, WANG  Rui1,2, WEI  Huan2, RAN  Li-Xin3,*   

  1. 1 KeyLaboratoryforPhysicalElectronicsandDevicesoftheMinistryofEducation,Xi ′anJiaotongUniversity, Xi′an710049,China
     2NationalKeyLaboratoryofScienceandTechnologyonSpaceMicrowave,ChinaAcademyofSpaceTechnology (Xi′an),Xi′an 710100,China
    3LaboratoryofAppliedResearchonElectromagnetics(ARE),  ZhejiangUniversity,Hangzhou310027,China
  • Received:2016-08-31 Revised:2017-03-17 Published:2017-04-25 Online:2017-03-21

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Abstract: Multipactorisoneofthemostimportantfailure   effectsforthespacebornemicrowavecomponents.Withtherapiddevelopmentofwidebandcommunication satellitesystems,themulticarriermultipactor(MM) ispaidmoreandmoreattentions.Whilethedesigncriterionwithmicrowavecomponentsforsingle carrierRFsignalisexplicit,itiscontroversialformulticarriermultipactor.Amethodtodetermine equivalentpowerforthesingleeventmulticarriermultipactorusingthemodifieddifferentialevol utionalgorithmwaspresentedtoovercomethedisadvantagesoftheconventionalempiricalformula.The powerpropertiesforthemulticarriersynthesissignalswereanalyzed,andtheenergyin20electrontransittimewasgloballyoptimized.Ineachoptimization,quadratic  interpolationwasusedtofind thelocaloptimum,thentheglobaloptimumwasobtainedbyusingthemodifiedDifferentialEvolutio nalgorithm.Itistheworstcaseforallkindsofconfigurationsandtheoptimalaveragepowercanbeusedfortheequivalentpowerinthewidebandcomponentdesign.Theproposedmethodisdemonst ratedwiththeuniformamplitudeandequallyspacedfrequencies.Theproposedapproachisalsoable toprovidereasonableequivalentpowerformulticarriersignalswithnonuniformamplitudesorthe unequallyspacedfrequencies.

Key words: differentialevolutionalgorithm；singleeventmulticarriermultipactor； equivalentpower；microwavecomponents  , equivalentpower；microwavecomponents