Application of absorbing boundary conditions to TLM simulations

It is demonstrated that the traditional method of match terminating the TLM (transmission line matrix) mesh does not accurately model a free space boundary. It is found that the match termination of the TLM mesh is accurate only if waves strike the boundary with normal incidence. A successful implementation of one type of FD-TD (finite-difference time-domain) absorbing boundary condition in TLM simulations is described. This boundary condition is superior to the traditional match termination of the TLM mesh.<
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