1.25gbs限幅放大器中的帶寬擴(kuò)展與信號檢測技術(shù)

1、華中科技大學(xué)碩士學(xué)位論文1.25Gbs限幅放大器中的帶寬擴(kuò)展與信號檢測技術(shù)姓名：黃成申請學(xué)位級別：碩士專業(yè)：軟件工程指導(dǎo)教師：應(yīng)建華20110527華中科技大學(xué)碩士學(xué)位論文IIAbstractWiththedevelopmentoftechnologyInteropticalfibercommunicationtechnologyhadbeeninventedtoachievehigherspeeddataexchangerapidly

2、developinrecentyears.Chinahasestablishedanationalfiberopticalcommunicationsystemnow.Thelimitingamplifierisakeypartofopticalreceiverinthesystemitdeterminestheperfmanceofwholesystemsoitsgreatsignificanttoresearchdevelopwit

3、hindependentintellectualpropertyrightsoflimitingamplifier.InthisthesismultistageamplifiermoduleinputsignaldetectionmoduleweredesignedbasedontheSMIC0.18mCMOStechnology.Amultistagecircuitwasdesignedtoobtainenoughgainwhileu

4、sedtheimprovedCherryHopperstructuretoextendthebwidth.Everystagehaddifferentcircuitstructurewhichcouldreducethechipareasize.Theinputsignaldetectionmodulewasdesignedbasedonlimitedresistanceofnonidealcurrentsource.Detection

5、modulewouldshutdownoutputbuffermoduletoreducepowerconsumptionimpactofnoisewheninputsignalamplitudedidntmeetrequirement.Hysteresiseffectwasdesignedtoreducethemalfunctionthismodule.ThesimulationresultsbyHspiceindicatedthat

6、theamplifiermodulehada40dBgain932MHzbwidthaminimuminputdynamicrangewith4mVppwhichcouldmeettheapplicationrequirementsofSTM8(1.25Gbs)inopticalfibercommunicationsystem.Thedetectionmodulehad1.9dBhysteresiswindowbetterthanthe

7、designrequirementsof1.5dB.Layoutdesignwascriticalsothepaperintroducedparasiticparameterswhichwouldimpactthecircuitperfmancesomedesignskillsthengaveacompleteterrityoflimitingamplifieratlast.Keywd:LimitingAmplifierBwidthEx