220GHz澶.pptx

220GHz澶.pptx

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THzCommunicationSystemsat220GHzBoZhang,ZhongqianNiu,YongFanBoZhang,ZhongqianNiu,YongFanSchoolofElectronicScienceandEngineering,SchoolofElectronicScienceandEngineering,UniversityofElectronicScienceandTechnologyofChinaUniversityofElectronicScienceandTechnologyofChinaChengdu,Sichuan,611731,ChinaChengdu,Sichuan,611731,China101.BACKGROUND01-1.TerahertzTechnology01-2.TerahertzCommunicationTechnology02.TERAHERTZMULTI-CARRIERSYSTEMSTRUCTURE01-1.TheDiagramoftheTerahertzMulti-carrierSystem01-2.TerahertzFrequencyMixer03.SUMMARYCONTENTS201-3.TerahertzSubharmonicDoubler01-4.SystemMeasurementBACKGROUND01301-1.TerahertzTechnology01-2.TerahertzsignalmonitoringTechnologyBACKGROUNDSignificantApplicationsofTHz01THzImagingSystemdetectionofcontrabandconcealedonpersonnel02LifescienceandtechnologyDiagnosisandtreatmentofskincancer03THzWirelessCommunicationtechnologyHighspeedreal-timetransmission04astronomicalremotesensingInterstellarexploration05Nondestructivetesting4TerahertzCommunicationTechnologyhasBecomeaWorldwideResearchHotspotBACKGROUND5AccordingtoEdholmlawofbandwidth1,thebandwidthrequirementofwirelessshortdistancecommunicationdoubledevery18months.Also,GlobalmobiledatatraffichasseenexplosivegrowthoverthepastfewyearswithgrowthdrivenlargelybytheriseoftheInternet-of-Things2.Terahertzcommunicationtechnologycanachieve100Gbpstransmissiondatarate,whichwillsupportthecommunicationdemandinthefuture.1.S.Cherry,“EdholmsLawofBandwidth”.IEEESpectrum,vol.41,no.7,pp.58-60,20042.J.Gubbi,etal.,“InternetofThings（IoT）:

Avision,architecturalelements,andfuturedirections”.FutureGenerationComputerSystems,vol.29,no.7,pp.1645-1660,2013TerahertzCommunicationTechnologyhasBecomeaWorldwideResearchHotspotBACKGROUND6100GbpsdataratehasexceededIEEE802.11transmissiontechnologies,whichcanbeusedforuncompressedtransmissionofHDTVandothermultimedia.TerahertzCommunicationSystemhasprogressivelysteppedintoapplication.BACKGROUND7In2008,10GbpsTHzcommunicationsystemwasbroadcastedinhighdefinitionattheBeijingOlympicGames.In2020,100GbpsTHzcommunicationsystemwillbeusedinTokyoOlympicGames.ResearchFoundationBACKGROUND8The220GHzcommunicationsystemcanachievea10Gbpstransmissiondatarateandtheoperationdistanceis200meters3.3Z.Chen,B.Zhang,G.Yue,Y.Fan,andY.Yuan,“220GHzOutdoorWirelessCommunicationSystemBasedonaSchottky-diodeTransceiver,”IEICEElectronicsExpress,Vol.13,No.9,pp.1-9,2016.ResearchFoundationBACKGROUND93Z.Chen,B.Zhang,G.Yue,Y.Fan,andY.Yuan,“220GHzOutdoorWirelessCommunicationSystemBasedonaSchottky-diodeTransceiver,”IEICEElectronicsExpress,Vol.13,No.9,pp.1-9,2016.The220GHzcommunicationsystemcanachievea10Gbpstransmissiondatarateandtheoperationdistanceis200meters3.CHALLENGESllackofhighsamplingrateADCconverters.lAchievereal-timedatatransmission.ChallengesofTerahertzCommunicationTechnologyBACKGROUND10TERAHERTZMULTI-CARRIERSYSTEMSTRUCTURE021101-1.TheDiagramoftheTerahertzMulti-carrierSystem01-2.TerahertzFrequencyMixer01-3.TerahertzSubharmonicDoubler01-4.SystemMeasurementPPT模板下载：

TransmitterDiagramoftheMulti-CarrierCommunicationSystem12SYSTEMSTRUCTUREEachCarrier:

10GbpsTotal:

20GbpsPPT模板下载：

STRUCTURETheReceiverDiagramoftheMulti-CarrierCommunicationSystem13EachCarrier:

10GbpsTotal:

20GbpsPPT模板下载：

SchottkyDiodeStructureofSubharmonicMixerThestructureachievessinglesideband（SSB）operationwithoutusinganyfiltersinterahertzband,whichreducescircuitlossandsimplifiestheRFcircuit.SystemStructureAdvantages010214RECEIVERSYSTEMSTRUCTUREThephaseofthesignalbeforeADCisthesameasitafterDAC,whichavoidsphaseprocessinginFPGAchipandsimplifiesbasebandalgorithm.PPT模板下载：

STRUCTUREAphotographof220GHzdual-carriercommunicationsystemreceiver.15PPT模板下载：

partandKeyCircuitsHighEfficiencyDoublerKeyCircuitIKeyCircuitIILowNoiseSubharmonicMixer16TheDiagramofTransmitterSystemRECEIVERSYSTEMSTRUCTURETheDiagramofReceiverSystemPPT模板下载：

inputSchottkyDiodesLowpassfilterLOdiplexer17220GHzSubharmonicMixerStructureRECEIVERSYSTEMSTRUCTUREThecircuitstructureofthe220GHzsub-harmonicmixerisshowninthefigure.Thewholecircuitisintegratedonthequartzsubstrate,thusreducingthetechnicaldifficulty.PPT模板下载：

Loss：

6dBNoiseTemperature：

1200KRECEIVERSYSTEMSTRUCTUREThemixercavityandmeasurementresults.220GHzSubharmonicMixerDesigningPPT模板下载：

DoublerStructureBasedonthebalancedstructure,themainmodeoftherectangularwaveguideisusedasthefundamentalpropagationmode,andthesecondharmonicpropagatesintheformofquasi-TEMmode.19RECEIVERSYSTEMSTRUCTUREPPT模板下载：

doublercavityandmeasurementresults.20110GHzDoublerDesigningWhenthebiasvoltageis-2.9V,thedoublerreachesthebestworkingcondition.Theoutputpowerofthefrequencymultiplierreachesthemaximumat109GHz,whichis7.13mWandislargerthan4mWfrom105GHzto112GHz.RECEIVERSYSTEM