Objective: To determine Y, Z and ABCD parameters of single and cascaded two-Port networks experimentally and verify their interrelation ships.
Consider a passive two-port (4-terminal ) network as shown in fig 1.
The Voltage V1, V2 and current I1, I2 can be related in terms of Z-parameters as shown below.
Similarly, current I1, I2 can be expressed in terms of voltage V1 and V2 using Y parameters.
Similarly, voltage V1 and current I2 can be expressed in terms of current I1 and voltage V2 using h parameters as below.
Lastly, voltage V1 and current I1 can be expressed in terms of volatge V2 and current (-I2) using ABCD parameters.
If two networks M and N connected in cascade then the total transmission matrix T of the overall network is given by,