SUPER ABSORPTION BOUNDARY-CONDITION FOR GUIDED-WAVES IN THE 3-D TLM SIMULATION

A super absorption boundary condition (SABC) for the 3-D symmetrical c ondensed node transmission line matrix (3-D SCN TLM) method is present ed, As both an electric field and a magnetic field exist at the same t ime and position, SABC may be more suitable for the 3-D SCN TLM method than for the finite difference time domain (FD-TD) method. To illustr ate the effectiveness of the boundary condition, SABC is used to trunc ate the computational domain of an open microstrip line, It performs b etter than the Higdon first- and second-order conditions and the Higdo n second-order condition with spurious mode suppressed.