5. The three-port device with an s-matrix of s= 1 0 a. Directional coupler b. Wilkinson power divider c. Isolator d. Circulator is:

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The three-port device with an s-matrix of s=
14
a. Directional coupler
b. Wilkinson power divider
c. Isolator
d. Circulator
/0 0 1
1 0 0 is:
0
1 0/
An RF amplifier has an s-matrix in which S₁2 = 0. What can be said about the stability
of this amplifier?
a. The amplifier is unstable for all loads
b. The amplifier is stable only when the load VSWR<2:1
c. The amplifier is unconditionally stable
d. The amplifier is stable only for real load impedances
Transcribed Image Text:The three-port device with an s-matrix of s= 14 a. Directional coupler b. Wilkinson power divider c. Isolator d. Circulator /0 0 1 1 0 0 is: 0 1 0/ An RF amplifier has an s-matrix in which S₁2 = 0. What can be said about the stability of this amplifier? a. The amplifier is unstable for all loads b. The amplifier is stable only when the load VSWR<2:1 c. The amplifier is unconditionally stable d. The amplifier is stable only for real load impedances
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