Power Gain - Transducer Power Gain

Transducer Power Gain

The transducer power gain of a two-port network, G_T, is defined as:

where

• P_load is the average power delivered to the load
• P_source,max is the maximum available average power at the source

In terms of y-parameters this definition can be used to derive:

where

• Y_L is the load admittance
• Y_S is the source admittance

This result can be generalized to z, h, g and y-parameters as:

where

• k_xx is a z, h, g or y-parameter
• M_L is the load value in the corresponding parameter set
• M_S is the source value in the corresponding parameter set

P_source,max may only be obtained from the source when the load impedance connected to it (i.e. the equivalent input impedance of the two-port network) is the complex conjugate of the source impedance, a consequence of the maximum power theorem.