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Numerical modelling of transient radiated interferences in time domain by the hybrid ARB method. (English) Zbl 0941.78016

From the introduction: The authors present a novel hybrid method of Adapted Radiating Boundaries (ARB). In the ARB method, the field inside the objects is discretized spatially, while the interaction between the objects is described by Green’s functions. In difference to the Transmission Line Matrix Integral Equation (TLM-IE) method, the discretized regions only enclose the objects and nearly no additional free space volume, surrounding the objects. The reduced volume of the discretized regions leads to a lower number of elementary cells for the TLM algorithm as well as a lower number of surface elements. Compared to the TLM-IE method, the number of the field values that have to be stored and updated is considerably reduced. This leads to a considerably higher efficiency of the ARB method. In addition, the description of non reflecting open boundary conditions at the surfaces of the discretized regions is more accurate. A first version of the ARB method has been introduced earlier.
In this paper, an extended version of the ARB method is introduced and verified by the example of two extended structures, being coupled to each other electromagnetically. Using the ARB method the inversion of a system of equations is not required. Without reduction of accuracy all the interacting fields are calculated explicitly in time domain. This leads to a high stability of the calculation process and to a very fast computational time.

MSC:

78M15 Boundary element methods applied to problems in optics and electromagnetic theory
78A25 Electromagnetic theory (general)
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References:

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