资料介绍
III-2HOIII-2. Impedance Matching with LC Network
(1) Matching Network and Impedance Transformation
ZS’
Zout
Zin
ZL’
ICE651 MMIC Design
III-2-1
III-2. Impedance Matching with LC Network
(1) Matching Network and Impedance Transformation
Impedance Toward the Load and Source
0.5/-2 1/-1 2/-0.5 5/-0.2
Z→Source =2
RS=2
1 1 = + Y → Source 2 j2 =1j1 Z→Source
j 1
Z→Source =1
0.2/-5
o/∞
-0.2/5
c
0.2/5 0.5/2 1
a
2/0.5 5/0.2
∞/o
-5/0.2
A
B
j 2
C
RL=1
b
-2/0.5 -1/1
-0.5/2
Z→Load=2
+ j1 Z→Load=1 1 1 Y = + → Load 2 j2
Z→Load=1
ICE651 MMIC Design
III-2-2
III-2. Impedance Matching with LC Network
(2) Q-factors : Resonant Circuits*
Parallel Resonance
Frequency dependency
From the figure the highest possible output voltage will
occur where
ωL = 1 /(ωC )
ω 0 = 1 / LC
3-dB freque
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