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傳輸線理論與阻抗匹配

资料介绍
傳輸線理論與阻抗匹配éuz×P§¤°t

Microwave & Communication Lab.

1

¤j

q éuz×
Lléu (Loss-less Transmission Line) §Cléu (Low-loss Transmission Line) ×-tüéu

q éSx°
Pbu (Coaxial Line) ±au (Strip Line) L±au (Microstrip Line)

q ¤§G¤ó§¤°t
u}¨§¤°t (Single-Stub Tuning Impedance Matching )
Microwave & Communication Lab.
2

éuz×

q ¤@qL--uéu¤§°`¤óq
i(z,t)
+ v(z,t)


i(z,t)
+ v(z,t)

z

z
i ( z + z, t )
+ Cz v( z + z, t )

R z

L z
Gz

z

¨¤¤ R=ìפ§êpqA /mC L=ìפ§êpqPAH/mC G =ìפ§¨pqAS/mC C=ìפ§¨pqeAF/mC
Microwave & Communication Lab.

3

éuz×

q §J§M¤qw (Kirchhoff’s Voltage Law, KVL)
dI V Lz IRz (V + V ) = 0 dt V V = jωLIz RIz = ( R + j ωL ) I z

q §J§M¤qyw (Kirchhoff’s Current Law, KCL)
d (V + V ) I Cz Gz (V + V ) ( I + I ) = 0 dt I = jC zω (V + V ) G(V + V )z I = (G + jωC )(V + V ) z

……
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傳輸線理論與阻抗匹配
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