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A computationally efficient method for the multi-objective optimization of shaped offset Gregorian reflector systems is presented. The method uses space mapping to construct a fast surrogate model of the responses of interest - aperture efficiency and side lobe level. The Pareto front of the surrogate is found, and the model iteratively re-aligned along the front. Ideal Gaussian feeds are used, and...
In this letter, a structure of a small ultra-wideband (UWB) monopole antenna, its design optimization procedure as well as experimental validation are presented. According to our approach, antenna compactness is achieved by means of a meander line for current path enlargement as well as the two parameterized slits providing additional degrees of freedom that help to ensure good impedance matching...
A novel structure of a small UWB monopole antenna is presented. In our approach, a compact size is achieved by means of a meander line for current path enlargement as well as the two parameterized slits that introduce additional degrees of freedom helping to ensure good impedance matching. The antenna design is carried out using surrogate-based optimization involving variable-fidelity EM simulations...
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