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THz波在共面线中传输损耗和色散特性的研究.docx

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THz波在共面线中传输损耗和色散特性的研究 Title:TerahertzWaveTransmissionLossandDispersionCharacteristicsinCoplanarLines Abstract: Asthestudyofterahertz(THz)wavetechnologygainsmomentum,itbecomesincreasinglyimportanttoinvestigatethetransmissionlossanddispersioncharacteristicsofTHzwavesincoplanarlines.Thispaperaimstoprovideanoverviewoftheresearchconductedinthisarea.ThetransmissionlossanddispersionpropertiesofTHzwavesincoplanarlinesareanalyzed,highlightingthechallengesandopportunitiesforpracticalapplications.VariousfactorsinfluencingTHzwavepropagation,suchasconductoranddielectricmaterialproperties,linedimensions,andmanufacturingtechniques,arediscussed.Additionally,thepaperexploresthepotentialsolutionsandtechniquesbeingdevelopedtomitigatelossesandimprovedispersionproperties.ThefindingsofthisstudywillcontributetotheadvancementofTHzwavetechnologyanditsapplicationsindiversefields. 1.Introduction THzwaves,alsoknownassubmillimeterwaves,refertoelectromagneticwaveswithfrequenciesbetween0.1THzand10THz.Theypossessuniquepropertiesthatmakethemattractiveforvariousapplications,includingmedicalimaging,securityscreening,spectroscopy,andwirelesscommunications.However,theeffectiveutilizationofTHzwavesishinderedbychallengesrelatedtotransmissionlossanddispersion. 2.TransmissionLosses ThetransmissionlossesinTHzwaveswithincoplanarlinesresultfromvarioussources,includingconductorlosses,dielectriclosses,radiationlosses,andsurfaceroughnesseffects.Conductorlossesoccurduetothefiniteconductivityofthemetalusedincoplanarlines,whiledielectriclossesariseasaresultoftheattenuationcharacteristicsofthesurroundingdielectricmaterial.Techniquessuchasusinglow-lossdielectricsubstratesandselectingconductivematerialswithlowresistivitycanhelpmitigatetheselosses. 3.DispersionProperties Dispersionreferstothedependenceofthephaseandgroupvelocitiesonfrequency.Incoplanarlines,dispersioncanbecategorizedintothreemaintypes:material,waveguide,andradiationdispersion.Materialdispersionresultsfromthefrequencydependenceofmaterialproperties,whilew