FREQUENCY DOMAIN TRANSMISSION LINE MATRIX METHOD AND ITS APPLICATIONS TO ELECTROMAGNETIC ANALYSIS

photocopy or other means, without the permission of the author. ii Supervisor: Dr. R. Vahldieck The finite difference time-pomain (FDID) method and the transmission line matrix (TLM) method are the two best known time-domain numerical techniques for modelling electromagnetic fields. Both algorithms provide time-domain as well as frequency-domain data. The latter is obtained from a Fourier transfonn of the time-domain impulse response. To achieve accurate frequency-domain data, some applications require long time iterations before a Fourier transfonn can be applied. This can be a problem when the computation time becomes excessive. In this case frequency-domain methods may be more suitable. Within the framework of the finite difference metbod one can always choose between the frequency-domain finite difference (FD) method and its time-domain (FDTD) counterpart without leaving the framework of the finite difference method. In the TLM method this was not possible until recently. In {16] a frequency-domain TL