2RC耦合共射放大器频率特性 bco b·e 开路 b rbb b'C Rs rce 8m R RL R e∥Db+R3) C b'C R b'C b'e b'e +8muberl ICbc C R b'co mabe b R R R Rbco=Rs(1+gmR )+RL 1.4 (8) 2I(Rve Cbe+roc rbcoCe 返回+ ub‘e - Cb‘C gmub‘e Rs ’’ RL ’ rb‘e + ub‘e _ C gmub‘e b‘e Cb‘C us Ｒb‘Co →Ｃb‘e , ＣL开路  +  +  = + + = =  +  =          b c0 s m L L '' s b e ' '' m b e L s b e b e C b c0 s b e b b s R R ( 1 g R ) R R u g u )R R u u ( i u R R r //(r R ) b c Ｒb‘Co Rs ’’ RL ’ + uCb‘C - i (8)   b e0 b e L0 L b c0 b c H 2 ( R C R C R C 1.14 f   + +   =  2 ＲＣ耦合共射放大器频率特性。 返回