FDTD multiconductor transmission line hybrid method for the study of the susceptibility of cables

The theoretical study of complex multiconductor cables susceptibility becomes very difficult when considering all physical phenomena. On one side, the rigorous approches give accurate results but important computational resources are needed for dealing with complex long cables. On the other side, the approached methods as the theory of lines neglect some phenomena such as the radiation, but they can be implemented on a simple PC. Because of the complementary of these two kind of methods an hybridation has been made taking the advantage of each one. The possibilities of the new hybrid method will be shown on some examples.