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Reliable low-cost co-kriging modeling of microwave devices

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3 Author(s)
Koziel, Slawomir ; Engineering Optimization & Modeling Center, School of Science and Engineering, Reykjavik University, Menntavegur 1, 101, Iceland ; Couckuyt, Ivo ; Dhaene, Tom

A reliable methodology for accurate modeling of microwave devices is presented. Our approach exploits co-kriging which utilizes low- and high-fidelity EM simulation data and combines them into a single surrogate model. Densely sampled low-fidelity data determines a trend function which is further corrected by sparsely sampled high-fidelity simulations. Low-fidelity EM data is also enhanced by using a frequency scaling. With our method, accurate models can be obtained at a fraction of cost required by conventional approximation models that are exclusively based on high-fidelity simulations. Two cases of microstrip bandpass filters are considered. Comparisons with conventional approximation models as well as application examples are also given.

Published in:

Microwave Symposium Digest (MTT), 2012 IEEE MTT-S International

Date of Conference:

17-22 June 2012