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A Two-Port Network is said to be symmetrical when the following equalities hold good

A Two-Port Network is said to be symmetrical when the following equalities hold good Correct Answer Z<span style="position: relative; font-size: 10.5px; line-height: 0; vertical-align: baseline; bottom: -0.25em;">11</span> = Z<span style="position: relative; font-size: 10.5px; line-height: 0; vertical-align: baseline; bottom: -0.25em;">22</span>

A two-port network is said to be symmetrical if the input and output ports can be interchanged without altering the port voltages and currents.

A network is said to be reciprocal if the ratio of the response to the excitation is invariant to an interchange of the positions of the excitation and response of the network.

Conditions of reciprocity and symmetry in terms of different two-port parameters are:

Two Port Parameters

Condition for Symmetry

Condition for Reciprocal

Z Parameters

Z11 = Z22

Z12 = Z21

Y parameters

Y11 = Y22

Y12 = Y21

ABCD parameters

A = D

AD - BC =1

H parameters

h11h22 - h12h21 = 1

h12 = -h21

 

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