Absorbing layers for the simulation of open boundaries in TLM field computation

Like other so-called volumic methods, the TLM requires artificial boundaries when simulations of open problems are performed. There are two cases for which artificial boundaries are needed: when structures under investigation are surrounded by unbounded space or when discontinuity characterization needs matched loads. These artificial boundaries enforce conditions commonly named absorbing boundary conditions (ABC). The paper discusses the most recent techniques based on absorbing media and their implementation in TLM computations.