FORMULATION OF THE FIELD-TO-TRANSMISSION LINE COUPLING EQUATIONS IN TERMS OF MAGNETIC EXCITATION FIELD

In this short paper, different formulations of the field-to-transmission line coupling equations are reviewed and discussed. In particular, a new equivalent formulation is derived in which the source terms (or forcing functions) are expressed in terms of magnetic excitation field. The use of this new formulation is particularly interesting to evaluate field-to-transmission line coupling when the exciting field is determined experimentally, since only the measurement of magnetic field-generally easier to perform than the electric field one-is necessary.