An antenna system , comprising: a common antenna aperture , comprising: a low-band antenna sub-system including a plurality of low-band antenna radiator elements operable over a first bandwidth and one or more low-band antenna sub-system ports providing one or more low-band sub-system port signals ; a high-band antenna sub-system including a plurality of high-band antenna radiator elements operable over a second bandwidth, at least partially overlapping the first bandwidth, and one or more high-band antenna sub-system ports providing one or more high-band sub-system port signals , wherein the plurality of low-band antenna radiator elements are interleaved with the plurality of high-band antenna radiator elements , within the common antenna aperture ; a signal processor electrically coupled to one or more full-band ports , and electrically coupled to each of the low-band antenna sub-system ports and high-band antenna sub-system ports , wherein the signal processor , in a receive mode, weighting and combining the one or more low-band sub-system port signals and one or more high-band sub-system port signals to provide, at the one or more full-band ports , uninterrupted continuous full-band frequency coverage whose extent covers the full frequency range of a low-band and high-band, and wherein the signal processor , in a transmit mode, separating and weighting one or more provided full-band input port signals into one or more low-band sub-system output port signals and into one or more high-band sub-system port output signals , such that a radio frequency field radiating from the low-band and high-band antenna sub-systems , combined, provides uninterrupted continuous full-band frequency coverage whose extent covers the full frequency range of the low-band and high-band. a low-band antenna sub-system including a plurality of low-band antenna radiator elements operable over a first bandwidth and one or more low-band antenna sub-system ports providing one or more low-band sub-system port signals ; a high-band antenna sub-system including a plurality of high-band antenna radiator elements operable over a second bandwidth, at least partially overlapping the first bandwidth, and one or more high-band antenna sub-system ports providing one or more high-band sub-system port signals , wherein the plurality of low-band antenna radiator elements are interleaved with the plurality of high-band antenna radiator elements , within the common antenna aperture ; a signal processor electrically coupled to one or more full-band ports , and electrically coupled to each of the low-band antenna sub-system ports and high-band antenna sub-system ports , wherein the signal processor , in a receive mode, weighting and combining the one or more low-band sub-system port signals and one or more high-band sub-system port signals to provide, at the one or more full-band ports , uninterrupted continuous full-band frequency coverage whose extent covers the full frequency range of a low-band and high-band, and wherein the signal processor , in a transmit mode, separating and weighting one or more provided full-band input port signals into one or more low-band sub-system output port signals and into one or more high-band sub-system port output signals , such that a radio frequency field radiating from the low-band and high-band antenna sub-systems , combined, provides uninterrupted continuous full-band frequency coverage whose extent covers the full frequency range of the low-band and high-band. <EOS>