Fast design of UWB antennas using electromagnetic models

Computationally efficient simulation-driven design optimization of ultrawideband (UWB) antennas is presented. We focus on two methodologies, both exploiting coarse-discretization EM simulations, so-called low-fidelity model. The first approach, shape-preserving response prediction (SPRP) allows us to estimate the output of the high-fidelity EM antenna simulation, using the properly selected set of so-called characteristic points of the low fidelity model response. The SPRP-corrected model is then utilized to yield a prediction of the optimal antenna design. The second technique, accounts for the discrepancy between the low- and high-fidelity model responses by appropriate modifications of the design requirements. In either case, the optimization burden is shifted to the low-fidelity model so that the optimized antenna design can be found at low computational cost. Two examples of UWB antenna design are provided.