Base station antennas having partially-shared wideband beamforming arrays

A base station antenna, comprising:

• a multi-column, multiband, longitudinally-extending beamforming array comprising a first sub-array of first radiating elements, a second sub-array of second radiating elements and a third sub-array of third radiating elements,
• wherein the first radiating elements are configured to operate in a first frequency band, wherein the second radiating elements are configured to operate in a second frequency band that is different from the first frequency band,
• wherein the third radiating elements are configured to operate in both the first frequency band and the second frequency band,
• wherein each of the first through third sub-arrays has a same number of columns,
• wherein a width of the first sub-array exceeds a width of the third sub-array, and
• wherein the width of the third sub-array exceeds a width of the second sub-array.