Fig. 12
Antenna I: model-predicted |S11| at the design found by optimizing the proposed metamodel (o), and EM-evaluated characteristic (—) at the same design; model constructed for NB = 800. The designs generated assuming the following specifications (bandwidth and substrate permittivity): (a) F = [4.3 4.7] GHz, εr = 3.5, (b) F = [2.9 3.1] GHz, εr = 4.4, (c) F = [3.45 3.75] GHz, εr = 2.5, (d) F = [5.7 6.1] GHz, εr = 2.5. Horizontal line marks the target operating bandwidth.
