简介:Inthispaperthemodelling,analysisandoptimizationofmillimeterwaveoscillatorsareinvestigatedbyusingtheafrequency-domainharmonicbalancetechnique(FDHB),wheretheexternal-circuitimpedanceslookingoutsidefromtheactivedevicearecalculatedwithacombinedtechniqueofmodesexpansion,Galerkin,andcollocationmethods.Theoptimizationresultsareinagreementwiththeexperimentalones,whichshowthereliabilityofthepresentedmodelandoptimization.
简介:PIM-SM(ProtocolIndependentMulticast-SparseMode)isamainmulticastroutingpro-tocolintheIPv6(InternetProtocolversion6).Itcanuseeitherasharedtreeorashortestpathtreetodeliverdatapackets,consequentlythemulticastIPlookupenginerequires,insomecases,twosearchestogetacorrectlookupresultaccordingtoitsmulticastforwardingrule,anditmayresultinanewrequirementofdoublingthelookupspeedofthelookupengine.TheordinarymethodtosatisfythisrequirementinTCAM(TernaryContentAddressableMemory)basedlookupenginesistoexploitparallelismamongmultipleTCAMs.However,traditionalparallelmethodsalwaysinducemorere-sourcesandhigherdesigndifficulty.Weproposeinthispaperanovelapproachtosolvethisproblem.ByarrangingmulticastforwardingtableinclasssequenceinTCAMandmakingfulluseoftheintrinsiccharacteristicoftheTCAM,ourapproachcangettherightlookupresultwithjustonesearchandasingleTCAM,whilekeepingthehardwareoflookupengineunchanged.ExperimentalresultshaveshownthattheapproachmakeitpossibletosatisfyforwardingIPv6multicastpacketsatthefulllinkrateof20Gb/swithjustoneTCAMwiththecurrentTCAMchip.
简介:ForanSOI-FPGA(silicon-on-insulatorfieldprogrammablegatearrays)(VS1000)fabricatedwith0.5mSOI-CMOS(silicon-on-insulatorcomplementary-metal-oxide-semiconductor)process,acompleteintegratedplatformofFPGAcomputer-aideddesign(CAD)toolset(VDK)isdeveloped,whichcanconverttheVerilogHDL(hardwaredescriptionlanguage)descriptionintoabitstreamandfinallydownloaditintoanFPGA.ExperimentsandtestingverifythatthisFPGACADworkswellandefficiently.
简介:<正>00576ACompactTransceiverforWideBandwidthandHighPowerK-,Ka-,andV-BandApplications/D.Yamauchi,R.Quon.Y-HChungetal(NorthropGrummanSpaceTechnology)//2003IEEEMTT-sDigest.—2015用当今先进的InPMMICs和先进的封装技术演示了一种宽带宽(13%~54%)高功率(>500mW)K、Ka及V波段小型收发机。该组件有30多块MMIC和200多个元器