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页数:18页
时间:2019-10-21
《高频小信号谐振放大电路(打印版)》由会员上传分享,免费在线阅读,更多相关内容在工程资料-天天文库。
1、长春工程学院高频电子线路课程设计(论文)题目:高频小信号放大电路设计学院:电子与信息工程学院专业班级:电子0942班学号:20号、31号、9号.26号学生姓名:指导教师:起止时间:2011.9.22〜2011・10・20勒毛与信息学院和谐勤奋求是创新内容摘要高频小信号谐振放大电路摘要:掌握高频小信号谐振放大器的工程设计方法,谐振冋路的调谐方法,放大器的各项技术指标的测试方法及高频情况下的各种分布参数对电路性能的影响,表征高频小信号谐振放人器的主要性能指标由谐振频率f。,谐振电压放人倍数Avo,放人器的通频带BW及选
2、择性(通常用矩形系数KrO.1)。关键词:1•谐振频率放人器的谐振冋路谐振时所对应的频率fO称为谐振频率。2.电压增益放大器的谐振冋路谐振吋所对应的电压放大倍数Av。称为谐振放大器的电压增益(放大倍数)3.通频带由于谐振冋路的选频作用,当工作频率偏离谐振频率时,放大器的电压放大倍数下降,习惯上称电压放大倍数Av下降到谐振电压放人倍数Avo的0.707倍时所对应的频率范围称为放人器的通频带BWO4.矩形系数谐振放人器的选择性可由谐振曲线的矩形系数KrO.1来表示矩形系数KrO.1为电压放大倍数下降到0.lAvo吋对应
3、的频率范围与电压放大倍数下降到0.707Avo时对应的频率偏离之比。工作计划:1.确定电路形式。2•设置静态工作点。3•计算谐振冋路的参数。4•确定输入耦合冋路及高频滤波屯容。contentofmarketingplanResonantfrequencysmall-signalamplifierAbstract*High・frequencysmall-signalresonanceamplifiermasterofengineeringdesignmethods,Keywords11resonantcircuitt
4、uningmethod,thetechnicalspecificationsoftheamplifiertestmethodsandhigh-frequencyparametersofvariousdistributionsincaseofimpactoncircuitperformaneeandcharacterizationofhigh-frequencysmall-signalthemainperformaneeindicatorsoftheresonantamplifierfromtheresonantfr
5、equencyfo,theresonantvoltagegainAvo,theamplifierpassbandBWandselective(usuallyrectangularcoefficientKr0.1).resonantcircuitresonantfrequencyamplifiercorrespond!ngtotheresonancefrequencyfOiscalledtheresonantfrequency.2theresonantcircuitvoltagegainoftheamplifierc
6、orrespondingtotheresonancevoltagegainAvocalledresonantamplifiervoltagegain(magnification)3pass-bandfrequencyselect!onastheroleoftheresonantcircuitwhenthefrequencydeviationfromtheresonantfrequency,theamplifiervoltagegaindrop,usedtocalldowntothevoltagegainAvreso
7、nantvoltagegainAvoof0.707timesthefrequencyrangecorrespondingtoknownastheamplifierpassbandBW.4rectangularresonantamplifierselectivitycoefficientbycoefficientKr0.1resonancecurveoftherectangletorepresentarectangleforthevoltagegaincoefficientKr0.1downto0.1Avocorre
8、spondingtothefrequencyrangeandvoltagegaindropsto0.707Avothefrequencycorrespondingtodeviationoftheratio.Workplan:1todeterminethecircuitform.2setthequiescentoperatingpoint.3calculate
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