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For the 2-port network shown, determine the value of transfer impedance Z21.

For the 2-port network shown, determine the value of transfer impedance Z21. Correct Answer 3 Ω

Concept:

The Z-parameter for a T-equivalent two-port network is,

= \left\)

Where

Z11 is open circuit impedance

Z12 = Z21 = Transfer impedance

Z22 = Open circuit output impedance

Calculation:

By using delta to star conversion, the given circuit can be reduced.

= \left\)

Transfer impedance = Z21 = 3 Ω

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