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无线传感网中低电压压控振荡器与频率综合器研究与设计的任务书.docx

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无线传感网中低电压压控振荡器与频率综合器研究与设计的任务书 任务书 ProjectTitle:ResearchandDesignofLowVoltageVoltage-ControlledOscillatorsandFrequencySynthesizersforWirelessSensorNetworks 1.Background Wirelesssensornetworks(WSNs)havebecomeincreasinglypopularinrecentyears,astheyofferameansofcollectingandtransmittingdatawirelessly.Thesenetworksconsistofalargenumberofsensors,eachofwhichisequippedwithawirelesstransceiverandamicrocontroller.ThelifetimeofthesesensorsisoneofthekeyfactorsindeterminingtheeffectivenessofWSNs.Thepowerconsumptionofthesensors,andtheirassociatedelectronics,isacriticalfactorindeterminingtheirlifetime.Therefore,thedevelopmentoflowpowerconsumingoscillatorsandsynthesizersisofgreatimportance. 2.AimsandObjectives Theaimofthisresearchistodesignanddeveloplowvoltagevoltage-controlledoscillators(VCOs)andfrequencysynthesizersforuseinwirelesssensornetworks.Specifically,theobjectivesare: -Toinvestigatethestate-of-the-artinVCOsandfrequencysynthesizersforlow-powerapplications. -TodesignandsimulatealowvoltageVCOandfrequencysynthesizerusingtheCadenceDesignSuite. -ToimplementandtestthedesignedVCOandfrequencysynthesizerinhardware. -ToevaluatetheperformanceofthedesignedVCOandfrequencysynthesizerintermsofpowerconsumptionandfrequencystability. 3.ScopeofWork Theprojectwillinvolvethefollowingactivities: -ResearchingthecurrentliteratureonlowvoltageVCOsandfrequencysynthesizers. -DesigningalowvoltageVCOandfrequencysynthesizerusingtheCadenceDesignSuite. -SimulatingthedesignedVCOandfrequencysynthesizerusingtheCadenceDesignSuite. -ImplementingthedesignedVCOandfrequencysynthesizeronaPCBboard. -TestingtheperformanceofthedesignedVCOandfrequencysynthesizerintermsofpowerconsumptionandfrequencystability. 4.Methodology Theprojectwillbedividedintothefollowingphases: Phase1:LiteratureReviewandConceptualDesign -ConductacomprehensivereviewoftheliteratureonVCOsandfrequencysynthesizersandidentifythestate-of-the-artinlow-powerdesigns. -DevelopaconceptualdesignforthelowvoltageVCOandfrequencysynthesizer. Phase2:CircuitDesig