Determination of mode conversion on differential lines

This paper describes the problems of mode conversion on differential lines. For the determination of mode conversion between the common mode and the differential mode two possibilities are suggested. The first method is the use of modal impedance matrices Zmacr
_m
to analyse the conversion related to current and voltage. The second method uses the S-parameters to calculate the mixed mode parameters to determine the conversion of modal power waves. Both views on the conversion of modes will be combined to alter the view on the problem.