ka波段谐波镜像抑制混频器mmic设计

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1、ABSTRACTABSTRACTMonolithicMicrowaveIntegratedCircuits(MMIC)hasmanyadvantagessuchassmallsize,highreliability,lowparasitic,goodconsistenceandlowcostwithmass-production.Soitisthemostattractivechoiceforbothmilitaryandcivilcommunicationsystems.Millimeter-wavemixerisakeypartinT/Rcomponents,andtheimag

2、erejectionmixercanperformwellintheconditionoflowIFsignalandbroadband.ConsideringthedifficultiesandcostofhighfrequencyLO,harmonicmixerisagoodsolutiontotheseproblemwiththefrequencyofLOdownto1/2or1/4ofitself.Inthedesignofsecondharmonicimagerejectionmixer,theinputportofLOandRFaredoublebalunandlange

3、bridgerespectively.LOsignalisinputthroughbalunandmixedwithRFsignaltowipeoffoddharmonicmixfrequency.Thefinalsimulationresultpresentsthattheconversionlossis11~11.7dBandtheimagerejectionisabove26dBinthebandof35-37GHzwhilethefrequencyofIFisfixedtof0.Inthedesignofforthharmonicimagerejectionmixer,the

4、inputportofLOandRFareWilkinsonpowerdeviderandlangebridgerespectively.Thefinalsimulationresultpresentsthattheconversionlossis12.2~13.7dBandtheimagerejectionisabove28dBinthebandof34-36GHzwhilethefrequencyofIFis0-1GHz.Andthemeasuredresultpresentsthattheconversionlossis12~16dBandtheimagerejectionis

5、above16dB.Keywords：Kaband，harmonicimagerejectionmixer,doublebalun,langebridge,MMIC.II万方数据目录目录第一章引言....................................................................................................................11.1研究意义及背景......................................................................

6、..........................11.2国内外发展动态................................................................................................21.2.1国外发展动态..........................................................................................21.2.2国内发展动态................................................

7、..........................................31.3课题介绍............................................................................................................41.3.1技术指标..............................................................