Variable-fidelity electromagnetic simulations and co-kriging for accurate modeling of antennas

Slawomir Koziel*, Stanislav Ogurtsov, Ivo Couckuyt, Tom Dhaene

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

44 Citations (Scopus)

Abstract

Accurate and fast models are indispensable in contemporary antenna design. In this paper, we describe the low-cost antenna modeling methodology involving variable-fidelity electromagnetic (EM) simulations and co-Kriging. Our approach exploits sparsely sampled accurate (high-fidelity) EM data as well as densely sampled coarse-discretization (low-fidelity) EM simulations that are accommodated into one model using the co-Kriging technique. By using coarse-discretization simulations, the computational cost of creating the antenna model is greatly reduced compared to conventional approaches, where high-fidelity simulations are directly used to set up the model. At the same time, the modeling accuracy is not compromised. The proposed technique is demonstrated using three examples of antenna structures. Comparisons with conventional modeling based on high-fidelity data approximation, as well as applications for antenna design, are also discussed.

Original languageEnglish
Article number6374214
Pages (from-to)1301-1308
Number of pages8
JournalIEEE Transactions on Antennas and Propagation
Volume61
Issue number3
DOIs
Publication statusPublished - 2013

Other keywords

  • Antenna modeling
  • co-Kriging
  • computer-aided design
  • electromagnetic simulation
  • Kriging
  • surrogate modeling

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