Ulf Muller

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The paper delivers new aspects to the TLM-method applied to longitudinally periodic structures. This contribution explains the main features of the method like the parameter estimation and the phase walls derived from the Floquet's theorem as well as examples and compares the obtained results to analytical solutions and measurements.
In this paper a new algorithm is proposed which reduces the amount of simulation time and memory requirements for longitudinally homogeneous structures substantially when using the TLM method. The number of TLM networks necessary to simulate waveguiding structures is reduced. Whereas usually two TLM networks are required for simulation, in our approach only(More)
The numerical simulation of Maxwell's equations requires a discretization, which must be limited in space domain. An often used method is the implementation of absorbing boundary conditions (ABC). In the FDTD method the perfectly matched layer (PML) has proven to be an excellent type of ABCs in many applications. In this paper the PML is introduced and(More)
In this contribution various problems appeared. Besides the implementation of a TLM- simulator simple absorbing walls had to be introduced which are called phase walls. A program was implemented to automatically discretize a structure from its geometrical data which generated a discretization profile for the TLM-simulator and other programs. The programs(More)
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