详解滤波电容的选择及计算

,.,,.,.,,.50HzHzHz4.7u,0.1u4.7uF0.1uF100ESR()WL=1/WC,W=2*PI*f,f=1/(2pi*LC)10n.ESRESL,,1)(1/jwc),,LC,FSR,FSR,,,FSR,,.,SFR,,:,,SFR(),?,.2),,SFR?SFR,SFR??SFR,,0402,0603,SFR,SFR:1)Datasheet,22pf0402SFR2G,2),S21?SFR,,RFsim99,.,,,LNA,dB.,,.PCB,,(,):,.,.STMDIP.,DIP(MHz)STM(MHz)1.02.550.18160.0125501000pF80160100pF25050010pF8001.6(GHz),.,,.:AC220-9V78LM0515V20009V2202.24V500mA1231250mA1.220V228.2V2128.2V2CRC3--50.1R=24V/0.5A=48C0.00625--0.0104FC6250F3,:C2.5T/R:C,UF;T,HzR,,,,(),C5T/R.3.PCBRCR1~2kC2.2~4.7F10PF,0.1UF,PCBPCB0.1uF10M20M110uFC=1/f0.10.01uFXcap=1/2fC.PCB.PCB=1/(LC)1/2STMDIPDIP(MHz)STM(MHz)1.02.550.18160.0125501000pF80160100pF25050010pF8001.6(GHz)C=4Pi*Pi/(R*f*f)1(1/jwc),,LC,FSR,FSR,,,FSR,,,?,SFR,,:,,SFR(),?,.2),,SFR?SFR,SFR??SFR,,0402,0603,SFR,SFR1)Datasheet,22pf0402SFR2G2),?S21?SFR,,RFsim99,.,,,LNA,dB.:(,),,mA,2uf.RC3~51A12V12RC=3(T/2)C=3(T/2)/R=3x(0.02/2)/12=2500(F)2200F2500F5T50HZT=0.02,,,,,,..,,