A multi-polarized continuous transverse stub (CTS) antenna includes a firstfeed network operative to at least one of receive or transmit a signal havinga firstpolarization, and a second feed network different from the first feed networkandoperative to at least one of receive or transmit a signal having a secondpolarization different from the first polarization. At least one parallel-plate region isdefined by a first plate structure and a second plate structure spaced apartfromthe first plate structure, where a first coupling structure connecting thefirst feednetwork to the parallel-plate region and a second coupling structureconnectingthe second feed network to the parallel-plate region. A common aperture isarranged on one side of the parallel-plate region, wherein wavefronts producedbythe first and second coupling structures and propagated within the parallel-plateregion radiate to free-space through the common aperture.
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