Expedited dimension scaling of microwave and antenna structures using inverse surrogates

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Abstract

Re-designing circuits for various sets of performance specifications is an important problem in microwave and antenna engineering. Unfortunately, this is a difficult task that is normally realized as a separate design process, which is often as expensive (in computational terms) as obtaining the original design. In this work, we consider the application of inverse surrogate modeling for fast geometry scaling of microwave and antenna structures. Computational efficiency of the discussed procedure is ensured by representing the structure at the low-fidelity model level. The explicit relation between design specifications (here, operating frequency) of the structure and its geometry dimensions is determined based on a set of predetermined reference designs. Subsequently, the model is corrected to elevate the redesigned geometry to the high-fidelity electromagnetic (EM) model level. Our approach is demonstrated through a compact rat-race coupler and a patch antenna with enhanced bandwidth.

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Koziel, S., Bekasiewicz, A., & Leifsson, L. (2016). Expedited dimension scaling of microwave and antenna structures using inverse surrogates. In Procedia Computer Science (Vol. 80, pp. 1051–1060). Elsevier B.V. https://doi.org/10.1016/j.procs.2016.05.407

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