Fig. 3
RGSA illustration using a dual-band antenna: (a) parameterized geometry, (b) |S11| responses at a random parameter vector x and designs perturbed along the principal components, x + hek (here, h = 0.1) for the first four vectors (from top left to bottom right) obtained using RGSA, (c) normalized eigenvalues of the relocation matrix S obtained using RSGA based on fifty random samples, as well as average EM-simulated variability indicators dRj computed as in (7). It can be observed that response variability is gradually reduced for increasing k, which demonstrates that subsequent eigenvectors correspond to directions having less and less effect on antenna responses.
