简介：Fieldcomputation,anemergingcomputationtechnique,hasinspiredpassionofintelligencescienceresearch.Anovelfieldcomputationmodelbasedonthemagneticfieldtheoryisconstructed.Theproposedmagneticfieldcomputation(MFC)modelconsistsofafieldsimulator,anon-derivativeoptimizationalgorithmandanauxiliarydataprocessingunit.ThemathematicalmodelisdeducedandprovedthattheMFCmodelisequivalenttoaquadraticdiscriminantfunction.Furthermore,thefiniteelementprototypeisderived,andthesimulatorisdeveloped,combiningwithparticleswarmoptimizerforthefieldconfiguration.Twobenchmarkclassificationexperimentsarestudiedinthenumericalexperiment,andonenotableadvantageisdemonstratedthatlesstrainingsamplesarerequiredandabettergeneralizationcanbeachieved.

简介：PhasedArrayFeed(PAF)isasmalltwo-dimensionalphasedarrayantenna,playingaroleasthemulti-beamfeedforthereflectorantenna.TheprominentcapabilityoflargecontinuousField-of-View(FoV)coverageandfastsurveyspeedmakesPAFthepromisingfeedforradiotelescopes.Inthispaper,theeffectoffeedarrayofPAFonthegainfluctuationsoverFoVisanalyzedonasim-plifiedmodeloftheFive-hundred-meterSphericalApertureradioTelescope(FAST),includingillu-minationpatternedgetaper,elementspacing,elementarrangementandelementamount.Andthedifferencesbetweenrectangularandhexagonalarrayarrangementsarecompared.TherelationshipbetweentheFoVandarrayconfigurationareconcludedatlast.

简介：Foranintegratedelectro-opticalsensor,theoperatingpointhasasignificanteffectontheperformanceofthesensor.Inthispaper,anopticalwaveguideelectricfieldsensorwithcontrollableoperatingpointisdesignedusingLiNbO3materials,whichhasanasymmetricMach-Zehnderinterferometer(MZI)structure.Theoreticalresultsshowthattheoptimaloperatingpointcanbeobtainedandcontrolledbytuningtheoutputwavelengthofthetunablelaserusedinthesensingsystem.Thesimulationresultsshowthatthesensitivityabout83dB·μV/mcanbeobtained,andthelineardynamicrangeaslargeas60dBcanbeachieved.Andthefabricationtoleranceofthecenter-to-centerdistanceforthe3dBcouplerusedintheasymmetricMZIis~0.5μm,whilethepowersplittingratiooftheYbranchiswithmoretolerance.