Approximate frequency-response values for transmission-line transient analysis

To reduce computational effort when evaluating the transient response of multiconductor transmission lines, a simplified means of obtaining frequency responses is described. The method employs the concept of frequency-independent modal matrices, and in this respect involves an approximate application of the theory of natural modes. Together with the modified Fourier transform, it is used to provide the transient-response characteristics of typical line configurations found in practice. Furthermore, these results are compared with those obtained more precisely, so as to indicate the high order of accuracy that is possible.