10第十讲_噪声系数分析仪

[e-mail]20052„„„„„„„„„„2005320054„„„„„200551„200562„„200573„200584200595200510„„„„„„„200511„„„„„ƒfkTPnim∆=ƒsRsv2nvnisiPP/nosoPP/iRoRLRnFpmGnAPnosonisinPPPPF//=ƒ“”svsRsRfkTRvsn∆=42200513nosonisioinPPPPSNRSNRF==„„()nipnonisisononosonisioinPGPPPPPPPPPSNRSNRF====„nipnAnipnAnipnipnonPGPPGPPGPGPF+=+==11nF1pmG2pmG2nF1nAP2nAPsRgv11,npmFG22,npmFG1nAP2nAPnomP()11213121111−−++−+−+=NpmpmnNpmpmnpmnnnGGFGGFGFFFLL200515ƒgRgvnoPnApmPG,pmGgvgR)290(0K2ev)290(00KT=2ev2evgReTfRKTvgee∆=42eTnFKToe29=nFKToe5.14=200516„„„„„„f„200517„„„„200518„„„„„200519„„„„200520„„„„2005211„„„„„„„200522„„„„„BKTPFgensys0=200523„„„BKTGPPGPFPnoniPnosys0==200524„„„„“”„“”„2005251200526„2]/)[(lg10)(/)(00TTTENRorTTTENROFFSONSdBOFFSONS−=−=„„“”“”„„„“”“”2005273„“”„2005284„„„„„„„„„„„„„„„„200529()11213121111−−++−+−+=NpmpmnNpmpmnpmnnnGGFGGFGFFFLLnipnAnipnAnipnipnonPGPPGPPGPGPF+=+==1Y„()[]1212112121//1GTTTGFFF−=⇒−−=200530Y1()[]1212112121//1GTTTGFFF−=⇒−−=„„„200531Y2()[]1212112121//1GTTTGFFF−=⇒−−=„„„„„200532()[]1212112121//1GTTTGFFF−=⇒−−=Y3„Y„„„„„„200533Y4()⎟⎟⎠⎞⎜⎜⎝⎛−=−=290log10290/10OFFSONSdBOFFSONSTTENRTTENROFFONOFFONTTYNNY==ƒ200534Y5()()()()1///22222222−−=++==YTYTTTTTTNNYOFFSONSOFFSONSOFFON()()1//121212121212−−==YTYTTNNYOFFSONSOFFON200535Y6()()dBGGNNNNGdBOFFONOFFON110,12212121log10/=−−=12121/GTTT−=ƒ200536Y„200537„„„„„„„„„„200538„„„200539()[]1212112121//1GTTTGFFF−=⇒−−=„„„„„„„„2005401()11213121111−−++−+−+=NpmpmnNpmpmnpmnnnGGFGGFGFFFLL2ƒ21121122,11122211221211211⎟⎟⎠⎞⎜⎜⎝⎛⎟⎟⎠⎞⎜⎜⎝⎛−+⎟⎟⎠⎞⎜⎜⎝⎛−+⎟⎟⎠⎞⎜⎜⎝⎛+⎟⎟⎠⎞⎜⎜⎝⎛=dBdBENRGFFFFSGGFFNFGFFNFFFNFδδδδ䃃200542„„„200543„„„„200544„„„„„„„„“”„“”200545„„„„„„„„„200546ƒƒƒ200547„„200548200549120055022005513„2005524„„„2005535„200554„„„2005551„2005562„200557„2005581„„„„200559„„„„200560„„„„„„„200561„„200562„„„„‘’‘’„‘’‘’200563„„„„200564„„„„„200565200566„„„„2005672„„„„„„200568„„„„„„„200569„„2005701„„„200571„„„„„„„200572„„„„„„„2005733„„„200574„„„„„2005751„„2005762„„„„200577„„„200578„„„200579„„„2005803„„„200581„„„„„„„2005821„„„200583„„„200584„„„200585„„„2005862„„„„„„200587„„„„„„„„„2005881„„„„„„„„2005894„„„200590„„„„2005911„200592„„„„2005931„200594„„„„„2005951„200596„„„„„„„„„„200597„„„200598„„„„„„„„„„„„„