Investigation of lossless transmission lines by time-domain analysis

A direct time-domain method is presented for calculating voltage waves at terminals and transmission line terminating in an arbitrary non-linear load. By utilising a time stepping of the load voltage with a sufficiently small time interval, one may linearize the non-linear load in that interval and obtain the convergent voltage responses. Numerical examples show that this is efficient in the computation without the use of the inverse Fourier transform or the Newton-Raphson method for the lossy transmission line. This work forms a general basis for the investigation of non-uniform microstrip line such as exponential tapered stripline and thus has significant application potential in high-speed communication circuits.