Development of a Broadband and High-Gain Circularly Polarized Array of Multilayer Slot Antennas for X-Band Wireless Communication Networks

Figure 1

The structure of the single-element cavity-backed slot antenna: (a) 3D layout, (b) side view, (c) circular slot and its feed line on the first layer, and (d) cross-slotted circular patch on the second layer.

(a)

(b)

(c)

(d)