In this paper, a flexible and efficient method for analyzing the electromag
netic field to nonuniform multiwire aerial lines coupling is proposed. This
analysis in based upon the finite-difference time-domain (FDTD) algorithm.
The transient responses of nonuniform lines excited by different waves obt
ained by this method are compared with those of Spice and literature. The g
ood agreement between all the simulation results validates the proposed app
roach.