简介：A4.1GHztwo-stagecascodeLow-NoiseAmplifier(LNA)withElectro-StaticDischarge(ESD)protectionispresentedinthispaper.TheLNAhasbeenoptimizedusingESDandLNAco-designmethodologytoachieveagoodperformance.Post-layoutsimulationresultsexhibitaforwardgain(S21)ofabout21dB,areverseisolation(S12)oflessthan-18dB,aninputreturnloss(S11)oflessthan-16dB,andanoutputreturnloss(S22)oflessthan-17dB.Moreover,theNoiseFigure(NF)is2.6dB.ThisdesignisimplementedinTSMC0.18μmRFCMOStechnologyandthedieareais0.9mm×0.9mm.

简介：A2.4GHz0.18μmCMOSgain-switchedsingle-endLowNoiseAmplifier(LNA)andapassivemixerwithnoexternalbalunfornear-zero-IF(IntermediateFrequency)/RF(RadioFrequency)applicationsaredescribed.TheLNA,fabricatedinthe0.18μm1P6MCMOStechnology,adoptsagain-switchedtechniquetoincreasethelinearityandenlargethedynamicrange.ThemixerisanIQ-basedpassivetopology.MeasurementsoftheCMOSchipareperformedontheFR-4PCBandtheinputismatchedto50Ω.CombiningLNAandmixer,thefront-endmeasuredperformancesinhighgainstateare:-15dBofS11,18.5dBofvoltagegain,4.6dBofnoisefigure,-15dBmofⅡP3,-85dBmto-10dBmdynamicrange.Thefullcircuitdrains6mAfroma1.8Vsupply.

简介：Afullydifferentialcomplementarymetaloxidesemiconductor(CMOS)lownoiseamplifier(LNA)for3.1–10.6GHzultra-wideband(UWB)communicationsystemsispresented.TheLNAadoptscapacitivecross-couplingcommon-gate(CG)topologytoachievewidebandinputmatchingandlownoisefigure(NF).Inductiveseries-peakingisusedfortheLNAtoobtainbroadbandflatgaininthewhole3.1–10.6GHzband.Designedin0.18μmCMOStechnology,theLNAachievesanNFof3.1–4.7dB,anS11oflessthan–10dB,anS21of10.3dBwith±0.4dBfluctuation,andaninput3rdinterceptionpoint(IIP3)of–5.1dBm,whilethecurrentconsumptionisonly4.8mAfroma1.8Vpowersupply.ThechipareaoftheLNAis1×0.94mm2.

简介：研究分析了低噪声放大器的设计方法，介绍了低噪声放大器的特点，同时还介绍了低噪声放大器的网络组成和性能指标。给出了应用一种网络匹配法设计的低噪声放大器．并对电路进行了S参数和NF的仿真，并采用Asoft公司Designer软件包通过模拟集成电路国家重点实验室双极晶体管模型进行了设计分析。结果证明；这种应用SmithTool具设计网络匹配电路具有方便快捷的优点，可符合工业基本要求。

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简介：<正>恩智浦半导体NXPSemiconductorsN.V.近日宣布推出SiGe:C低噪声放大器(LNA),进一步提高了GPS信号的线性度、噪声系数以及GPS(包括GLONASS和伽利略卫星定位系统)的接收效果,同时继续保持恩智浦在此类产品市场上的体积最小。BGU700xLNA产品仅需两个外部元件,节省50%的PCB面积和10%的器件成本。

简介：诺基亚2100手机由于价格低廉，很受学生朋友的欢迎，近期笔者在维修中发现部分2100手机无接收，接收差的故障多与其LNA电路有关，由于其采用分立元件组成，诸如此类结构的手机如：V998、8850、9210i、A399等，电路结构具有一定的代表性，结合实际维修经验总结出分立元件LNA电路的“三段分析法”，并做详细分析，希望对广大维修者有所帮助。