简介：BasedonthemethodofseparatingvariablesandthetechniqueofMuller’scalculatingroots,thepropagationcharacteristicsofhybridmodesinhomogeneousandinhomogeneouscircularFaradaychirowaveguidesareexaminedindetail.Numericalresultsarepresentedtodemonstratethecombinedeffectsofdifferentconstitutiveparametersonthemodebifurcation,symmetryandnonreciprocity,backward-waveandattenuationofhybridmodes,whicharedifferentfromthecasesofordinarygyrotropicandreciprocalchiralwaveguides.
简介：Adefinitionofcombinedphasecenterforhornfeedsisgiven.FormulasofE-planeandH-planecombinedphasecenterforconicalhornsandthecorrespondingOptimalmodelarepresented,andafastoptimizationmethodforsolvingthismodelisdescribed.Byusingthismethod,thephasecenterofcorrugatedhornisdiscussedandcalculated,andthevariationofthephasecenterwithdistanceandoperatingfrequencyisgiven.
简介：Aclassofmodifiedparallelcombinedmethodsofreal-timenumericalsimulationarepresentedforastiffdynamicsystem.Bycombiningtheparallelismacrossthesystemwiththeparallelismacrossthemethod,andrelaxingthedependenceofstagevaluecomputationonsamplingtimeofinputfunction,aclassofmodifiedreal-timeparallelcombinedmethodsareconstructed.StiffandnonstiffsubsystemsaresolvedinparallelonaparallelcomputerbyaparallelRosenbrockmethodandaparallelRKmethod,respectively.Theirorderconditionsandconvergencesarediscussed.Thenumericalsimulationexperimentsshowthatthisclassofmodifiedalgorithmscangethighspeedandefficiency.
简介：Thispaperpresentstheanalysisofopenmicrostripstructuresbyusingdiakopticmethodoflines(ML)combinedwithperiodicboundaryconditions(PBC).Theparametersofmicrostrippatchareobtainedfrompatchcurrentexcitedbyplanewave.ImpedancematrixelementsarecomputedbyusingfastFouriertransform(FFT),andreducedequationissolvedbyusingdiakoptictechnique.Consequently,thecomputingtimeisreducedsignificantly.TheconvergencepropertyofsimulatingopenstructurebyusingPBCandthecomparisonofthecomputertimebetweenusingPBCandusualabsorbingboundarycondition(ABC)showthevalidityofthemethodproposedinthispaper.Finally,theresonantfrequencyofamicrostrippatchiscomputed.Thenumericalresultsobtainedareingoodagreementwiththosepublished.
客服QQ：30444492琼网文【2021】1550-113号
增值电信业务经营许可证：琼B2-20210322
出版物经营许可证：新出发龙华出字第(2021)009号
广播电视节目制作经营许可证：(琼)字第00779号
版权所有 ©2002-2024 期刊网(www.qikanchina.com) 琼ICP备2021005105号
