Sec. 5.2] TRANSFORMATION BETWEEN REPRESENTATIONS 



35 



Fig. 5.1. Mixed voltage-current representation of 2OT-terminal-pair network. 



Returning to the general expression (Eq. 5.2), we note that it also can 

 be written in a form similar to Eq. 5.1. 



[i ! -t] 



= 8 



(5.6) 



The analysis in Sec. 5.2 shows how transformations are performed from 

 one matrix representation to another. Then the transformation of the 

 power expression will be studied. Combining the results of these two 

 studies, we shall be able to define a characteristic-noise matrix for every 

 formalism and to show its relation to the characteristic-noise matrix de- 

 fined in Eq. 3.15. 



5.2. Transformation from One Matrix Representation to Another 



The variables - - 



can always be related by a linear trans- 



