Time domain numerical simulation of the electromagnetic waves propagation in a tridimensional space and its interaction with objects is the crue of the contributions of this work More specifically, the implementation of the Yee´s algorithm was carried out, including techniques to minimize the problems of numerical reflection that occur in the edges at the tridimensional space of simulation. The result of this work is a generic software that simulates in four dimensions (three in space and one in time). This software can handle complex problems (complex geometry and diverse different materials) and is executable in a general purpose computers. In other words, a numerical implementation of an anechoic chamber allows the simulation of the interactions of electromagnetic waves and the objects inside of anechoic chamber. A new programming technique called "variables organization in space plans", t allowed the accomplishment of this work.
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