A method of analysing the performance of tandem-connected four-terminal networks

After a brief review of the classical quadripole theory, definitions are giveil of the reference parameters of a quadripole and refereiice operation between nominal impedances. Use is then made of these definitions to analyse a simple case involving tandem-connection of two quadripoles. A graphical technique for calculation purposes is introduced, and a simple example of the application of the results derived is given. Brief reference is made to the scope of the generalized treatment of this subject.