These lumped parameters of a medium length transmission line can be represented using three different models, namely-

- Nominal
**Π**representation. - Nominal
**T**representation. - End Condenser Method.

I

I

Now applying KCL, at node P, we get.

Similarly applying KCL, to node Q. Now substituting equation (2) to equation (1)

I

I

Let M be a node at the midpoint of the circuit, and the drop at M, be given by V_{m}.

Applying KVL to the above network we get,

Now the sending end current is,
Substituting the value of V_{M} to equation (9) we get,
Again comparing equation (8) and (10) with the standard ABCD parameter equations,
The parameters of the **T** network of a **medium transmission line** are

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