本科毕业论文—微波低噪声放大器仿真设计与测量.doc

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1、郑州大学毕业设计(论文)题目微波低噪声放大器设计院系信息工程学院专业电子信息工程专业年级2007级学生姓名辛振宇（20072410135）指导教师周晓平（副教授）2010年5月15日摘要快速发展的无线通信对微波射频电路如低噪声放大器提出更高的性能。低噪声放大器(LNA)广泛应用于微波接收系统中，是重要器件之一，主要用来放大低电平信号，由于是自天线下来第一个进行信号处理的器件，LNA决定了整个系统的噪声性能和电压驻波比VSWR，并对动态范围有着较大的影响。本文介绍了微波放大器技术的基础理论，并对微波低噪声放大器及其实现术进行了研究。

2、然后使用美国安捷伦公司所开发的ADS(AdvanceDesignSystem)2008软件，利用其提供的强大的数据分析测量、电路设计、参数的模拟仿真、结果的优化等功能，进行微波低噪声放大器的设计、优化、仿真。本文对ADS软件的电路设计有较详细的介绍，并对微波低噪声放大器设计具有一定的研究意义。关键词：微波低噪声放大器HEMTADS2008AbstractRapidgrowthofwirelessdatacommunicationshasincreasedthedemandforhighperformanceRF&Microwave

3、circuits，SuchasMicrowaveLowNoiseAmplifiers(LNA)．TheLNAisoneofthemostimportantandbroadcomponentsinMicrowavecommunicationsystemreceiver,andisusedtoamplifythe10Wlevelsignal．Asthefirstsignalprocessingblockaftertheantenna，theLNAdeterminesthenoisefigureandinputvoltageSWRand

4、greatlyimpactsthedynamicrange．Inthispaper，authorintroducesthebasictheoryofmicrowaveamplifiers，andstudysthetheoryandtechnologyofLNA.TheADS(AdvanceDesignSystem)2008softwareisdevelopbytheAgilentinUSAandusethecapabilities—dataanalysisandmeasurement,circuitdesign,simulatio

5、nofparameters,theresultsofoptimization,ect,todesign,optimizationandsimulationthisLNA.ThedesignhasadetaileddescriptionaboutcircuitdesigningbyADS,andhasacertainofresearchsignificanceinMicrowaveLowNoiseAmplifierdesign.Keyword:MicrowaveLowNoiseAmplifierHEMTADS2008目录第一章绪论·

6、·································································41.1微波电路的发展历史·····················································41.2微波低噪声放大器技术及应用·············································51.3射频和微波电路设计仿真软件简介·········································7第二章微波放大器基本原理··

7、··················································92.1微波晶体管的S参数·······················································92.2微波放大器的增益·······················································102.3微波晶体管放大器的稳定性··············································122.4放大器网络匹配的主要形式···

8、··········································21第三章低噪声设计理论·······················································253.1噪声的来源·····