EC > GATE 2014 SET-1 > Two Port Networks
A two-port network has scattering parameters given by S = [s11 s12; s21 s22]. If the port-2 of the two-port is short circuited, the s11 parameter for the resultant one-port network is
A
s11 - (s11s22 - s12s21)/(1 + s22)
B
s11 + (s11s22 - s12s21)/(1 + s22)
C
s11 + (s11s22 + s12s21)/(1 - s22)
D
s11 - (s11s22 + s12s21)/(1 - s22)

Correct : d

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