Common Mode Coupling Matrices

In this study of induction coupling between cables, the mutual inductance and capacitance between the wires of two cable circuits are resolved into common mode and normal mode parameters. All other relelvant parameters, and also the variables, are resolved in a similar manner. The result is a matrix equation giving the combined effect of source upon receptor via all possible modes of coupling. A valid total equation could also be written without resolution into modes; however, the introduction of modes makes it easier to assess shielding effectiveness and to use existing amplifier mode conversion data.