Fig. 14
Antenna III: model-predicted |S11| (black) and realized gain (gray) 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 (lower and upper operating frequency): (a) F = [2.9 3.1] GHz, εr = 3.5, (b) F = [3.4 3.8] GHz, εr = 3.0, (c) F = [2.4 2.8] GHz, εr = 4.3, (d) F = [4.5 5.0] GHz, εr = 2.5. Vertical and horizontal lines mark the target operating band.
