Transient radiation of traveling-wave wire antennas

The radiation fields for both the near and far zones of a transient traveling current along a finite linear wire are calculated directly in the time domain. Some of the results on the electric fields obtained by several methods in the literature differ. In fact, the above methods can be classified into two types: (1) the monopole technique and (2) the dipole technique. In this paper, a model of the transient radiation produced by a traveling-wave linear wire is suggested. The reasons of the differences in the literature are pointed out. The equivalence of solutions by the monopole and dipole techniques is proven.