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Reduced-cost surrogate modelling of compact microwave components by two-level kriging interpolation.

Authors :
Koziel, Slawomir
Pietrenko-Dabrowska, Anna
Source :
Engineering Optimization. Jun2020, Vol. 52 Issue 6, p960-972. 13p.
Publication Year :
2020

Abstract

Full-wave electromagnetic (EM) analysis is a versatile tool for evaluating the performance of high-frequency components. Its potential drawback is its high computational cost, inhibiting the execution of EM-driven tasks requiring massive simulations. The applicability of equivalent network models is limited owing to the topological complexity of compact microstrip components because of EM cross-coupling effects. Development of alternative representations (surrogate models) is therefore necessary. This article proposes a two-level methodology for reliable modelling of compact microstrip components. The keystone is to define the surrogate domain using the first-level model approximating the set of pre-existing reference designs. This limits the volume of the parameter space region that needs to be sampled when constructing the second-level model. The presented approach provides far greater accuracy than conventional methods and is capable of establishing surrogates covering wide ranges of geometric parameters and operating conditions of a particular structure. Applications for parametric optimization are also provided. [ABSTRACT FROM AUTHOR]

Subjects

Subjects :
*KRIGING
*INTERPOLATION
*MICROWAVES

Details

Language :
English
ISSN :
0305215X
Volume :
52
Issue :
6
Database :
Academic Search Index
Journal :
Engineering Optimization
Publication Type :
Academic Journal
Accession number :
143154310
Full Text :
https://doi.org/10.1080/0305215X.2019.1630399