element on the lower side of this layer. This layer is held a distance of 6 mm above a ground plane, as shown in Figure 1. Five additional parasitic elements are printed on the upper layer, which is held a distance of about a half wavelength above the first layer. The filling medium between the layers is air. The dimensions of the ground plane are larger than the elements plates only by a 50% in the H-plane and by 11% in the E-plane. The simulation software Zeland IE3D was used for investigating the antenna characterizations and design optimization.
EXPERIMENTAL RESULTS AND DISCUSSIONAll simulations were carried out for the case of an infinite ground plane.
CONCLUSIONIn conclusion, it is shown that the proposed antenna has high performance and a compact size and is inexpensive. The experimental results are in very good agreement with those obtained by simulation. The spectral response of the antenna samples investigated in this work is characterized by a relatively small bandwidth. For applications requiring larger bandwidths, a different geometry may be considered. This will be the subject of a later work.