ABCD matrix of the cascade connection of 2 networks is equal to:

A)
Sum of the ABCD matrices representing the individual two ports
B)
Product of ABCD matrices representing the individual two ports
C)
Difference of the ABCD matrices representing the individual two ports
D)
Sum of transpose of ABCD matrices representing the individual two ports

Correct Answer : Option (B) :   Product of ABCD matrices representing the individual two ports

Explanation : When two networks are connected in cascade, each of the two networks are represented as a 2×2 square matrix. Then to obtain the equivalent matrix of the cascade, the product of the ABCD matrices of each stage is taken.

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