R. Rabenstein et H. Krauss, DISCRETE SIMULATION OF UNIFORM TRANSMISSION-LINES BY MULTIDIMENSIONALDIGITAL-FILTERS, International journal of numerical modelling, 9(4), 1996, pp. 271-294
Recently, a new method has been presented for the discrete simulation
of multidimensional systems, which are described by linear partial dif
ferential equations with constant coefficients. It is based on methods
customary in linear systems theory and digital signal processing and
uses a frequency-domain representation of the continuous system to be
simulated. A proper choice of functional transformations for each inde
pendent variable allows us to treat the influence of initial condition
s, boundary conditions and excitation functions separately by suitable
transfer functions. From these, corresponding discrete transfer funct
ions and the structure of a discrete system for the simulation of the
continuous problem are derived. The application of this method to wave
propagation problems on uniform transmission lines is presented here.
At first, the continuous problem is characterized by transfer functio
ns; then the derivation of a discrete system is shown, and finally, so
me simulation results and a comparison with other methods are given.