Fig. 2: Unit cell simulation.
From: Experimental demonstration of peripherally-excited antenna arrays
The specially engineered PEX array unit cell with a closed bandgap in the dispersion relation: a Top view of the unit cell showing the cross-shaped radiating slots, and the semi-square slots that are added to achieve accidental degeneracy between the eigenmodes, and close the bandgap at the Γ-point. b, c The corresponding full-wave simulated 2D dispersion relation and 2D dispersion contours showing a closed bandgap at the Γ-point. d–g The corresponding full-wave simulated electric field distribution (V/m) of the 1st, 2nd, 3rd, and 4th eigenmodes at the Γ-point, respectively. (Dimensions: w = 1 mm, l = 7 mm, S1 = 3.3 mm, S2 = 2.7 mm and unit cell size = 14.3 mm × 14.3 mm × 1.575 mm).
