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ID:33939107
大小:4.13 MB
页数:4页
时间:2019-03-01
《Quadrature Subharmonic Coupled Oscillators for a 60GHz SiGe.pdf》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、822QuadratureSubharmonicCoupledOscillatorsfora60GHzSiGeScalablePhasedArrayJamesF.Buckwalter,AydinBabakhani,AbbasKomijani,andAliHajimiriCaliforniaInstituteofTechnology,Pasadena,CA91125Abstract-ThispaperdescribesanintegratedcoupledoscillatorarrayinSiGeformillimeterwaveappl
2、ications.Thedesignfocusesonscalableradioarchitectureswheremultiplediesaretiledtoformlargerarrays.A2x2oscillatorarrayfora60GHztransmitterisdesignedwithintegratedpoweramplifiersandantennas.The2x2arraydemonstratesa200MHzlockingrangeand1x4arrayformedbytwoadjacentchipshasa60M
3、Hzlockingrange.Thephasenoiseofthearrayisbelow-llOdBc/HzatalMHzoffset.IndexTerms-PhasedArray,CoupledOscillator,MillimeterWave,SiliconGermanium.I.INTRODUCTIONUnlicensedoperationatthe59-65GHzbandisstimulat-inguniqueradioarchitecturesformillimeterwaveinte-gratedcircuits.Tran
4、sceivercircuitsthatoperateatDie3~~J11L~~.I{iDie4millimeterwavefrequenciesweredemonstratedwithSiGeFig.1.Coupledoscillatorapproachforfullyintegratedphased-[1][2].However,theintegrationofacompletephasedarrayarraytransmitter.Eachoscillatordrivesatransmitchainwithatransceiver
5、withantennasonasinglechipoffersnewDACcontrolledphaseshifter,poweramplifierandantenna.designchoicesandopportunities.Thispaperdemonstratesacoupledoscillatorarrayformillimeterwavesiliconinte-Thedesignofthecoupledoscillatornetworkismotivatedgratedcircuits.bydemonstratingarra
6、yscalabilityaswellasavoidingtheCoupledoscillatorsaresuitedforfullyintegratedphasedon-chipcouplingthatoccurswithpower-amplifiersandarraycircuits.First,thesmallwavelengthat60GHzallowsantennas.Themeasuredresultsshowthatthephasenoisefullyintegratedarraysonasingledie.Scalable
7、architec-ofeachelementcanbesuppressedwhenlockedtoanturesareparticularlyappropriateforcreatinglargerarraysexternalarrayacrossasinglechipaswellasacrosstwobytilingseveraldies.InFig.1,scalabilityisdemonstratedchips.foraphasedarraytransmitter.Thephasedarrayrequiresphasecohere
8、ncebetweenallelements.Sinceeachchiprequiresfrequencygeneration,neighboringchipsareII.COUPLEDOSCILLATORS
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