電子信息工程專業(yè)英語教程（第5版） 課件 Lesson 09 Interconnects

Unit3ElectronicSystemComponentsLesson9Interconnects《電子信息工程專業(yè)英語教程（第5版）》Lesson9InterconnectsBackgroundsTexttour

LanguageinuseVocabularyStructureReading/writingtechniques2024/5/29《電子信息工程專業(yè)英語教程》2TerminologyVSWRfrequencyresponsedecibelpad,leadribboncableBNCBackgrounds2024/5/29《電子信息工程專業(yè)英語教程》3Terminology2024/5/29《電子信息工程專業(yè)英語教程》4VSWRVoltageStandingWaveRatio電壓駐波比2024/5/29《電子信息工程專業(yè)英語教程》5Frequencyresponse頻率響應(yīng)2024/5/29《電子信息工程專業(yè)英語教程》6Decibel(dB)decibel分貝Aunitusedtoexpressrelativedifferenceinpowerorintensity,usuallybetweentwoacousticorelectricsignals,equaltotentimesthecommonlogarithmoftheratioofthetwolevels.2024/5/29《電子信息工程專業(yè)英語教程》7Pad,leadPad焊點，焊盤Lead引線2024/5/29《電子信息工程專業(yè)英語教程》8ribboncable帶狀電纜扁平柔性電纜2024/5/29《電子信息工程專業(yè)英語教程》9同軸電纜卡環(huán)形接頭BNC2024/5/29《電子信息工程專業(yè)英語教程》10TexttourOutlineIntroduction

High-SpeedConnectorProblemsCrosstalkLevelsofInterconnects2024/5/29《電子信息工程專業(yè)英語教程》11Interconnectdevicesareusedforinterconnecting…Performancerequirements…Teststhatindicatesignalintegrityinclude…

Introduction2024/5/29《電子信息工程專業(yè)英語教程》12Interconnecteffectscanplayasignificantpartinthetimingandnoisecharacteristicsofacircuit…High-SpeedConnectorProblems2024/5/29《電子信息工程專業(yè)英語教程》13causedbyinductiveandcapacitivecouplingbetweencontactsand/orlinesfeedingcontacts.canbeexpressedinapercentageofthevoltageswingofthesignal,orindecibels(dB),Twotypesofcrosstalk:backwardcrosstalkforwardcrosstalkCrosstalkcanalsobesingle-lineormultiline.

Tocompletelyunderstandthecrosstalkspecificationsofaconnector,auserneedsthefollowinginformation:Crosstalk2024/5/29《電子信息工程專業(yè)英語教程》14Level1:chippadtopackageleads,e.g.,wirebondsLevel2:componentstocircuitboard,e.g.,PLCCsocketLevel3:circuitboard(board-to-board)connector,e.g.,edge-cardformotherboardtodaughterboardconnectionLevel4:subassemblyinterconnects,e.g.,ribboncablesLevel5:subassemblytoI/O,e.g.,BNCconnectorLevel6:systeminterconnects,e.g.,EthernetconnectorsLevelsofInterconnects2024/5/29《電子信息工程專業(yè)英語教程》15Vocabularyloss,shield,detrimental,degradation,ratioStructureReading/writingtechniquesLanguageinuse2024/5/29《電子信息工程專業(yè)英語教程》16Vocabulary2024/5/29《電子信息工程專業(yè)英語教程》17LossindictionaryTheactoraninstanceoflosing:

失敗Onethatislost:

損失Thepowerdecreasecausedbyresistanceinacircuit,circuitelement,ordevice.

功率損耗Theamountofaclaimonaninsurerbyaninsured.

險損賠償額2024/5/29《電子信息工程專業(yè)英語教程》18Lossintext

Interconnectdevicesmustmeetcertainperformancerequirementsinmostorallofthefollowingcategories:SignalintegrityPowerloss…互連器件必須滿足下列大多數(shù)或者全部性能要求：信號完整性功率損耗…2024/5/29《電子信息工程專業(yè)英語教程》19Lossinuse

absorptionloss吸收損耗antennaloss天線損耗apertureloss孔徑失真conductionloss傳導(dǎo)損耗contactloss接觸損耗conversionloss變換損耗couplingloss耦合損耗crosstalkloss串話損耗2024/5/29《電子信息工程專業(yè)英語教程》20Lossinuse

distributionloss配電損耗grossloss毛損,總損harmonicloss諧波損耗insertionloss插損ironcoreloss鐵芯損耗loadloss負(fù)載損耗powermismatchloss輸入失配損耗propagation(power)loss傳播(功率)損耗transmissionloss傳輸損耗2024/5/29《電子信息工程專業(yè)英語教程》21ShieldindictionaryAbroadpieceofarmormadeofrigidmaterialandstrappedtothearmorcarriedinthehandforprotectionagainsthurledorthrustedweapons.盾Apersonorthingthatprovidesprotection.后盾Aprotectivedeviceorstructure防護性裝置或結(jié)構(gòu)Atechnicalsafeguardthatprotectsthecircuitorunit

fromtheinfluenceofexternalelectricormagneticsourcestoproduceharmfulsignal.

屏蔽2024/5/29《電子信息工程專業(yè)英語教程》22ShieldintextElectricalcharacteristics:contactresistance,inductanceandcapacitance;voltageandpowerratings;shielding;filtering電氣特性（接觸電阻，電感和電容，電壓和功率額定值，屏蔽，濾波）

2024/5/29《電子信息工程專業(yè)英語教程》23Shieldinuse

arcshield電弧罩baffleshield隔音板cableshield電纜套管electrostaticshield靜電屏蔽groundshield接地屏蔽radiationshield防輻射屏蔽2024/5/29《電子信息工程專業(yè)英語教程》24DetrimentalindictionaryCausingdamageorharm;injurious.

引起損害的；有害的2024/5/29《電子信息工程專業(yè)英語教程》25DetrimentalintextAninterconnectthatmustpasstheshortrisetimeofahigh-speedsignalpulsecanbedetrimentaltomaintainingsignalintegrityduetoanunwantedreflection.因為出現(xiàn)了反射，所以在通過互連路徑傳送高速信號脈沖時，短促的上升時間就會破壞信號的完整性。2024/5/29《電子信息工程專業(yè)英語教程》26DegradationindictionaryTheactorprocessofdegrading.

降級Thestateofbeingdegraded;degeneration.

墮落，衰退Adeclinetoalowercondition,quality,orlevel.

退化，下降Decompositionofacompoundbystages,exhibitingwell-definedintermediateproducts.

降解2024/5/29《電子信息工程專業(yè)英語教程》27DegradationindictionaryIndatacommunications,adeteriorationinthecharacteristicsofasignalforwhateverreason.Aconditioninwhichthesystemoperatesatreducedlevelsofservice.Thesecircumstancesareusuallycausedbyunavailabilityofvariousequipmentunitsorsubsystems.2024/5/29《電子信息工程專業(yè)英語教程》28DegradationintextSignalintegrityisdefinedbylossofqualityoftheinputsignal.Ideally,thesignalattheoutputofaninterconnectshouldbeequalinallcharacteristicswiththesignalattheinputoftheinterconnect.Inreality,signaldegradationoccurs.信號完整性是指輸入信號質(zhì)量的損失。理想情況下，互連器件的輸出端信號和輸入端信號在所有特性上都完全相同。實際中會發(fā)生信號質(zhì)量的下降。

2024/5/29《電子信息工程專業(yè)英語教程》29RatioindictionaryRelationindegreeornumberbetweentwosimilarthings.

比率Therelationbetweentwoquantitiesexpressedasthequotientofonedividedbytheother:

比例Theratioof7to4iswritten7:4or7/4.2024/5