Series-Fed Dual-Band Dual-Polarized Antenna Lattice Fed by Slot-Coupled Power Dividers

A series-fed dual-band dual-polarized antenna lattice has been proposed. It has been shown that it is possible to feed two separate antenna arrays having the frequency ratio f2/f1 ≈ 2 that are integrated within a common aperture with the use of a series feeding network along both x- and y-axes. To achieve that, a concept of slot-coupled power dividers has been employed and a series feeding network allowing simultaneously for frequency separation and appropriate signal distribution in both frequency ranges has been proposed. The presented concept has been verified by measurements of the manufactured circularly polarized series-fed antenna lattice operating at 2.4- and 5.3-GHz frequency ranges.