电子科技大学通信射频电路 通信系统噪声和非线性特性 19-24

1、 1 232lo g(1/)IBSN/21IBSN 4567 8/4/(1)hf kTnVhfBR e4/(/1)4nVhfBRhfkTkTBR2(/2 )nnPVRRkTB910223( )4,1.380 10/VnSfVkTR kxJ K2( )( )/4/IVSfSfRkT R( )2IoSfqI( )/VSfKf/enTPKB有噪有噪网络网络RsTe=0GpPn0RL无噪无噪网络网络RsTeGpn0RL11 121122nenePGkT BGkT BPGkT BGkT B11221nenePTTYPTT121eTYTTY13o00SNR/ppnnpGGPPGsisininiPP=PPG

2、pPn0PSiPniPso=GpPsiPno=GpPni+Pn0iSNRsiniP=P0/1niopniPFSNRSNRG P 14ViRoRs15ovsoRGRRsiP2sovsiPG P( )4niVsPSf BkTR B( )4(/)noVsoPSfkT RR B2/4(/)/4sinisososonosoPPkT RR BRRFPPkTR BR1soRR ViRoRs16/1/sinisisisonososopPPPKTBPFLPPPKTBPG/sopsisiPG PPLniPkTBnoPkTBsiP17Gp,B,TeRsT0PnoRLPni0niPkT B0()nopePG k TT

3、 B00/1/()sinisiesonopsipeoPPPkT BTFPPG PG k TT BT 18Gp1BTe1RsT0Pno2RLPniGp2BTe2Pno11101()nopePG k TTB22122212011120()()n opn opeeppepppePGPGk TBTGGk BTTGGGk BTT19211eeepTTTG110220(1)(1)eeTFTTFT211(1)1eopTFFFTG 231112.eeeepppTTTTGG G3201112(1)(1).pppFFFFGGG2012121.59,415.9,10ppFFGG21114 115.91.77915.

4、9pFFFG10lg2.5NFFdBGp1NF1Gp2NF221 2211.26 12.51 111.5810100.79fmaaafFFFFGG G011.80 1 290232eTFTK232361.38 10150 232 10 103.95noAePk TT BG132.08 1096.8WdBm 13122.08 101005.27 1082.83.95oonoinoSS PSWdBmGP G 12550 5.27 101.62 1016.2io iVZ SVV rms24ononiniAiSPP FP FGkT BFGS236131.38 1050 10 101.8 3.951.4

5、7 10 W252(1)GSDDssGSoffviIVvbeicicvbeiDiDvGSVGSoffIDssbeqvktcsiI e26i2+V+Vi i+ Vo -Vcci1122oiqiiiI thVkTi=i1-i2vi027oinVaV230123.noiiiniVaaVa Va Va V28tAtxcos)(0( )y t29232132323( )/2(3/4)cos(cos2)/2(cos3)/4 .y tAAAtAtAtNonlinear Networky(t)=Y(x(t)ff2f3f4ftAtxcos)(302133(3/4),0GA311/145.0dBA,1,1111i

6、n dBpin dBP dBPGdBPG dB232132323( )/ 2(3/ 4) cos(cos 2) / 2(cos 3) / 4.y tAAAtAtAt tAtxcos)(31.)()()()(33221txtxtxtytAtAtx2211coscos)(22322121 111231231212232221212221221221221212312212123( )()/2 (3(2)/4)cos(3(2)/4)coscos2/2cos2/2cos()cos()3(cos(2)cos(2) )/4 3(cos(2y tAAAAAAtAA AAtAtAtAAtAAtA AttAA2

7cos(2) )/4cos3/4cos3/4ttAtAt32321111231231212232( )(3(2)/4)cos(3(2)/4)cosy tAAA AtAA AAt12AA2213133/ 2,0GA12GG2113133/ 4,0GA 3311111cos(1cos)cosAtAmtt22121212(3(1cos) /2)cosAA Amtt 34tAtAtx2211coscos)(.)()()()(33221txtxtxty22322121111231231212232221212221221221221212312212123( )()/2 (3(2

8、)/4)cos(3(2)/4)coscos2/2cos2/2cos()cos()3(cos(2)cos(2) )/4 3(cos(2y tAAAAAAtAA AAtAtAtAAtAAtA AttAA213321131232)cos(2) )/4cos3/4cos3/4ttAtAt35122212213212322143124321,1nmNnm mn12nmDesired Signal Channel12Desired Signal Channel1222121236 ()nIMdBcN阶交调分量幅度基波幅度3()IMdBc三阶交调分量幅度基波幅度232123112311320log(3/(3

9、(2)4)LIMA AAA AA)4)2(3/(3log(203213212323122AAAAAAHIM2233112320log(3/(94)()IMAAAA37 3131212(9/4)(coscos)()AAttAAA4/)2cos(34/)2cos(312332133tAtA33213333313(9/4)3/4(9/4)IIPIIPIIPAAAAdBdBIIPAAA1131303. 3145. 034.3423313,1,1/4/3/9.1959.64IIPininin dBin dBIIPARRPPdB33131334IIPOIPAA231333,1/4/3/9.64( 11)O

10、IPoutoutin dBOIPARRdBG dBP381:13:110lg10lg()mPiPGP dBm3310lg30lg()IMIMPiPGP dBm233/()IMGpGpIIP391323()()()mIM LmIM HPPPPdBc 13()/2mmOIPPP( /)123,L HmmmmIMPPPP1:13:140Gp1Gp2IIP31IIP32P0Pi22211233 13 23 31123 13 23 311.1.pppAAAIIPIIPIIPIIPGGGIIPIIPIIP41 42接收信道接收信道解调器解调器RA, TaF, Gp ,B, T0PnoPso(SNR)min

11、! !4300(1)napPkB TFT G()()sonososippnoPPPPGGP0(1)apoutpkB TFT GSNRGmin0min(1)siaoutPkB TFT SNRmin0min10lg(1)()siaoutPkB TFT SNRdBmminmin174(/)() 10lg()()sioutPdBm HzNF dBB dB HzSNRdBm 4417410lgtFNFB minmin174(/)() 10lg()()sioutPdBm HzNF dBB dB HzSNRdBm minmin()()sitoutPFSNRdBmm inm in17410lg174 8 34

12、.8 12119.2()sioutPNFB SNRdBm 4524AsiAEPR46niAPKT B24AiAAESNRKT R BoSNRD24iAoAASNREFSNRKT R DB2144 10()(290 )AAAEKTR DBFR DBFV TK0.5AEV8121010106.3,1015.8FD47 48GVEAEV62110110lg()200.1VsioVGVVSNRdBV721100.110lg()01VsioVGVVSNRdBV49maxminsilsiPDRP50minmin()()sitoutPFSNRdBm3min1(2()()()3lttoutDRIIP dBmF

13、FSNRdB5152设计指标及分析设计指标及分析链路指标分配链路指标分配电路分解电路分解示意图编辑示意图编辑版图编辑版图编辑元器件和模型库元器件和模型库电路仿真电路仿真电磁仿真电磁仿真电路优化电路优化系统仿真与优化系统仿真与优化电路与系统制造电路与系统制造测试与调试测试与调试性能标定性能标定5354555151()2 156557iPiPiPiPiGGGdBGdB 线性值)56)dB(15)dB(10)dB(55FENFNFNF44NF1215.8dBFENF1531.62EdBF44131.62 115.825.493.1614.1EDPDFFFGNFdB2216.79CBBPFFFNFdBG314.1()6()20.1CDFFLdBdBdB28.79ABNFNFL