When the two port network is linear and has no dependent sources?

When the two port network is linear and has no dependent sources?

When the two-port network is linear and has no dependent sources, the transfer impedances are equal (z12 = z21), and the two-port is said to be reciprocal.

How many of the two-port variables are independent?

They are also useful for facilitating cascaded design of more complex systems. There are four terminal variables , namely V1 ,V2 , I1 , I2 , only two of them are independent. Hence , there are only six possible sets of two-port parameters.

Why do we study two-port networks?

The two-port network model is used in mathematical circuit analysis techniques to isolate portions of larger circuits. This allows the response of the network to signals applied to the ports to be calculated easily, without solving for all the internal voltages and currents in the network.

What are the differences between independent and dependent sources?

Independent source are those, whose value of either the voltage or the current to be delivered is independent of any other parameter of the network. Where as the dependent sources are those, whose value of either the voltage or the current to be delivered is dependent or controlled on other parameters of the network.

What are the two port network parameters?

There are various parameters needed to analyze a two port network. For examples, Z parameters, Y parameters, h parameters, g parameters, ABCD parameters etc. Let us discuss these network parameters one by one to gain a better understanding of their application and uses.

What do you mean by dependent sources?

A dependent source is a current or voltage source whose value is not fixed (i.e., independent) but rather which depends on some other circuit current or voltage. The general form for the value of a dependent source is Y=kX where X and Y are currents and/or voltages and k is the proportionality factor.

What is the port condition?

Port Conditions are set by the COTP and are used to alert the maritime community to changes in port operations needed to prepare for the hurricane’s arrival.

How many independent variables does a two port network have?

A two-port network has four variables with two of them being independent. If one of the ports is terminated by a load with no independent sources, then the load enforces a relationship between the voltage and current of that port. A degree of freedom is lost. The circuit now has only one independent parameter.

How is port 2 connected to port 1?

Need to use dependent sources. Now port 1 is connected to port 2 (the voltage at port 2 affects port 1) and vice-versa. This is the two-port version of the Thevenin equivalent idea. We can use this to model circuits that have an input and output. If desired, we can do a source transformation at each end. + – + – v 1a v 2 21 v 2 R 1 R +2 – + –a 12 v

How are two port networks described in mathematics?

The analysis of passive two-port networks is an outgrowth of reciprocity theorems first derived by Lorentz. In two-port mathematical models, the network is described by a 2 by 2 square matrix of complex numbers.

Which is the best parameter for a two port network?

When two-ports are connected in a series-parallel configuration as shown in figure 14, the best choice of two-port parameter is the h -parameters. The h -parameters of the combined network are found by matrix addition of the two individual h -parameter matrices.