标签: modulated

TheActivepulsemodulatedTransducer(AT).pdf

PulsewidthModulatedDC-to-DCPowerConversion-Circuits,Dynamics,andControlDesigns

Abstract:Thecircuitinthefigurebelowincludesa10-bitdigital-to-analogconverter(DAC)with3-wireserialinputthatoperatesandmaintainsavisible-lightlaserdiodeatconstantaverageopticaloutputpower.Aseparatedigitalinputline(MOD)enablesacomparatorwithopen-drainoutput(IC4)toimplementdigitalcommunicationsbypulsingthelaser-diodethroughQ1.Maxim>AppNotes>A/DandD/ACONVERSION/SAMPLINGCIRCUITSAMPLIFIERANDCOMPARATORCIRCUITSFIBER-OPTICCIRCUITSKeywords:modulatedlaser,diodedriver,visible-lightlaser,optical,photodiode,photodiode,peakopticalJul01,2001power,visiblelaserdriverAPPLICATIONNOTE1811Visible-LaserDriverHasDigitallyControlledPowerModulationAbstract:Thecircuitinthefigurebelowincludesa10-bitdigital-to-analogconverter(DAC)with3-wireserialinputthatoperatesandmaintainsavisible-lightlaserdiodeatconstantaverageopticaloutputpower.Aseparatedigitalinputline(MOD)enablesacomparatorwithopen-drainoutput(IC4)toimplementdigitalcommunicationsbypulsingthelaser-diodethroughQ1.Manylaserdiodesincludeaphotodiodethatgeneratesacurrent……

摘要：下图中的电路包括10位数字-模拟转换器（DAC），运营和维护一个可见的光激光二极管恒定的平均光输出功率的3线串行输入。一个独立的数字输入线（MOD），使漏极开路输出（IC4的）来实现数字通信，脉冲激光二极管，通过Q1比较。Maxim>AppNotes>A/DandD/ACONVERSION/SAMPLINGCIRCUITSAMPLIFIERANDCOMPARATORCIRCUITSFIBER-OPTICCIRCUITSKeywords:modulatedlaser,diodedriver,visible-lightlaser,optical,photodiode,photodiode,peakopticalJul01,2001power,visiblelaserdriverAPPLICATIONNOTE1811Visible-LaserDriverHasDigitallyControlledPowerModulationAbstract:Thecircuitinthefigurebelowincludesa10-bitdigital-to-analogconverter(DAC)with3-wireserialinputthatoperatesandmaintainsavisible-lightlaserdiodeatconstantaverageopticaloutputpower.Aseparatedigitalinputline(MOD)enablesacomparatorwithopen-drainoutput(IC4)toimplementdigitalcommunicationsbypulsingthelaser-diodethroughQ1.Manylaserdiodesincludeaphotodiodethatgeneratesacurrent……

CharacterizingDigitallyModulatedSignalswithCCDFCurvesCharacterizingDigitallyModulatedSignalswithCCDFCurvesApplicationNoteTableofContents1.IntroductionWhenareCCDFcurvesused?2.WhatareCCDFcurves?StatisticaloriginofCCDFcurvesWhynotcrestfactor?3.CCDFincommunicationsModulationformatsModulationfilteringMultiple-frequencysignalsPhasesaffectmulti-tonesignalsSpread-spectrumsystemsNumberofactivecodesinspreadspectrumOrthogonalcodingeffectsMulti-carriersignals4.CCDFincomponentdesignCompressionofsignalbynonlinearcomponentsCorrelatingtheamplifiercurveswiththeCCDFplotCompressionaffectsotherkeymeasurementsApplications5.Summary6.References7.Symbolsandacronyms2IntroductionDigitalmodulationhascreatedarevolutioninRFandmicrowavecommunications.Cellular……