2016华工电路原理作业

16-15 试求题16-15图所示电路的输入阻抗Zi。已知C1?C2?1F,G1?G2?1S,

g?2S。

1Zi1?G1gC1C2G22? 2题16-15图

解:题16-15所示电路中,回转器输出端口接导纳Y2(s)=G2+sG2 从回转器输入端口看进去输入导纳为: Y1(s)= I1(s)/U1(s)=g U2(s)/(-1/g) I2(s)= g2 U2(s)/-I2(s)= g2 / Y2(s)

所以,输入阻抗Z1(s)为:Z1=1/ G1+1/〔sG1+ Y1(s)〕=(s2+2s+5)(/s2+s+4)

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