Calculating Field Coupling into a Shielded Cable
Calculate the coupling between a monopole antenna and a nearby shielded cable that follows an arbitrary path above a ground plane.
The cable analysis method is used to analyse the cable harness. This method first solves the model without the cable and then calculates the coupling into the cable using the cable transfer impedance. Included in the cable analysis method is a database of measured cable properties (integrated in Feko).
Note: Simple cables such as unshielded cables or twisted pairs can also be modelled
using the full MoM solver method. However, the
memory requirement and solution time will be much larger than the cable analysis
method.
Figure 1. 3D view of an RG58 shielded cable illuminated by a monopole above an infinite ground plane.