An Efficient Framework for Analysis of Wire-Grid Shielding Structures over a Broad Frequency Range

A. Karwowski, A. Noga, T. Topa

An Efficient Framework for Analysis of Wire-Grid Shielding Structures over a Broad Frequency Range

Číslo: 4/2016
Periodikum: Radioengineering Journal
DOI: 10.13164/re.2016.0629

Klíčová slova: Computational electromagnetics, wire-grid structures, MoM, wideband analysis, adaptive frequency sampling, rational interpolation, GPGPU computing, Výpočetní elektromagnety, struktury drátů a mřížek, MoM, širokopásmová analýza, adaptivní vzorkování frekvence, racionální interpolace, GPGPU výpočty

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Anotace: A computationally efficient MoM-based framework for broadband electromagnetic simulation of wire-grid shielding structures is presented in the paper. Broadband capability of the approach is attained through supporting MoM by an adaptive frequency sweep combined with rational interpolation of the observable implemented via Stoer-Bulirsch algorithm. The performance increase is gained by employing CUDA-enabled CPU+GPU co-processing. For large-size problems exceeding the amount of memory available on the GPU device, a hybrid out-of-GPU memory LU decomposition algorithm is employed. The demonstration examples are provided to illustrate the the accuracy and high efficiency of the approach.