资料介绍
III-5HOIII-5. Signal Flow Graphs
(1) Signal flow graphs construction rule-(1)
Signal Flow Graph
(1) variable as a node (2) Sij and Γ as branches (3) branches from independent(incident waves) to dependent(reflected waves) variable nodes (4) a node is equal to the sum of the branches entering it
a1
S21
b2
S11
S22
b1
S12
a2
ICE651 MMIC Design
III-5-1
III-5. Signal Flow Graphs
(1) Signal flow graphs construction rule-(2)
Voltage-source generator
Vg = E s + I g Z s Vg + Vg = Es + (Vg Vg ) Z s / Z 0
+ +
Load Impedance
bg = bs + Γs a g
where
(1)
bg =
Vg
Z0
, ag =
Vg
+
Z0
, bs =
Es Z 0 Z s + Z0
Z Z0 Γs = s Z s + Z0
VL = I L Z L V V VL + VL = Z L ( L L ) Z0 Z0
+ +
bL = ΓL aL
where
(2)
+
V V bL = L , aL = L Z0 Z0 ΓL =
ICE651 MMIC Design
Z L Z0 Z L + Z0
III-5-2
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