Multi-Fidelity Optimization of Microwave Structures with FEKO Using Response Surface Approximation and Space Mapping
Slawomir Koziel
School of Science and Engineering, Reykjavik University, Iceland
A computationally efficient method for design optimization of CPU-intensive microwave structures simulated in FEKO is introduced. The presented technique exploits a response surface approximation surrogate model set up using data from the coarse-mesh FEKO model being a relaxedaccuracy representation of the microwave structure in question. The surrogate model is further subjected to the classical space mapping optimization. It is demonstrated that the new technique is able to provide a satisfactory design with a few FEKO evaluations of the original structure. Because of using functional approximation, no circuit equivalent coarse model is necessary. Application examples are provided.
25th Annual Review of Progress in Applied Computational Electromagnetics
2009
March
347-352
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