The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
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 robust technique for microwave design optimization is presented. It is based on variable-fidelity electromagnetic (EM) simulations. The algorithm automatically switches between models of different fidelity taking into account the computational budget assumed for the design process. Additional mechanisms enhancing the algorithm include: frequency scaling to reduce the misalignment between the models...
A robust and computationally efficient technique for design optimization of microwave structures is proposed. We exploit co-simulation-based surrogate models with the essential couplings evaluated using EM solver and most of the designable parameters modelled by distributed circuit elements with physical dimensions corresponding to those of the structure being optimized. Good prediction capability...
Space mapping (SM) is a popular technique that allows creating computationally cheap and reasonably accurate surrogates of EM-simulated microwave structures (so-called fine models) using underlying coarse models, typically equivalent circuits. Here, we consider various ways of enhancing SM surrrogates by exploiting additional training data as well as two function approximation methodologies, kriging...
Space mapping (SM) technology includes so-called output SM that ensures exact matching between the surrogate and the fine model at the current design. Output SM exploits the fine model data at a single design and is not able to align the models' sensitivity. Here, a multipoint response correction is introduced that generalizes the concept of output SM. By using a design-variable-dependent correction...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.