A base station antenna, comprising: a plurality of first radiating elements that are arranged as a first vertically-extending array, wherein the first vertically-extending array comprises a plurality of first sub-arrays of the first radiating elements, wherein the first radiating elements of a given first sub-array are configured to be fed RF signals having a same respective phase; a plurality of second radiating elements that are arranged as a second vertically-extending array, wherein the second vertically-extending array comprises a plurality of third sub-arrays of the second radiating elements, wherein the second radiating elements of a given third sub-array are configured to be fed RF signals having a same respective phase, and wherein the second radiating elements are staggered in the vertical direction with respect to the first radiating elements; wherein a plurality of phase centers in an azimuth plane for the first sub-arrays of the first radiating elements are aligned in a horizontal direction with a plurality of phase centers in the azimuth plane for the third sub-arrays of the second radiating elements, and wherein the first sub-arrays each have a first number of first radiating elements and the third sub-arrays each have a second number of second radiating elements, the first number being different than the second number, wherein the first vertically-extending array further comprises a plurality of second sub-arrays of the first radiating elements, wherein the first radiating elements of a given second sub-array are configured to be fed RF signals having a same respective phase, and wherein the second vertically-extending array further comprises a plurality of fourth sub-arrays of the second radiating elements, wherein the second radiating elements of a given fourth sub-array are configured to be fed RF signals having a same respective phase, and wherein a plurality of phase centers in an azimuth plane for the second sub-arrays of the first radiating elements are aligned in the horizontal direction with a plurality of phase centers in the azimuth plane for the fourth sub-arrays of the second radiating elements, wherein each one of the plurality of the second sub-arrays has the same number of radiating elements as each one of the plurality of the third sub-arrays, wherein each one of the plurality of the second sub-arrays and each one of the plurality of the third sub-arrays has one or more radiating elements, and each one of the plurality of the fourth sub-arrays has the same number of radiating elements as each one of the plurality of the first sub-arrays, wherein each one of the plurality of the first sub-arrays and each one of the plurality of the fourth sub-arrays has two or more radiating elements. a plurality of first radiating elements that are arranged as a first vertically-extending array, wherein the first vertically-extending array comprises a plurality of first sub-arrays of the first radiating elements, wherein the first radiating elements of a given first sub-array are configured to be fed RF signals having a same respective phase; a plurality of second radiating elements that are arranged as a second vertically-extending array, wherein the second vertically-extending array comprises a plurality of third sub-arrays of the second radiating elements, wherein the second radiating elements of a given third sub-array are configured to be fed RF signals having a same respective phase, and wherein the second radiating elements are staggered in the vertical direction with respect to the first radiating elements; wherein a plurality of phase centers in an azimuth plane for the first sub-arrays of the first radiating elements are aligned in a horizontal direction with a plurality of phase centers in the azimuth plane for the third sub-arrays of the second radiating elements, and wherein the first sub-arrays each have a first number of first radiating elements and the third sub-arrays each have a second number of second radiating elements, the first number being different than the second number, wherein the first vertically-extending array further comprises a plurality of second sub-arrays of the first radiating elements, wherein the first radiating elements of a given second sub-array are configured to be fed RF signals having a same respective phase, and wherein the second vertically-extending array further comprises a plurality of fourth sub-arrays of the second radiating elements, wherein the second radiating elements of a given fourth sub-array are configured to be fed RF signals having a same respective phase, and wherein a plurality of phase centers in an azimuth plane for the second sub-arrays of the first radiating elements are aligned in the horizontal direction with a plurality of phase centers in the azimuth plane for the fourth sub-arrays of the second radiating elements, wherein each one of the plurality of the second sub-arrays has the same number of radiating elements as each one of the plurality of the third sub-arrays, wherein each one of the plurality of the second sub-arrays and each one of the plurality of the third sub-arrays has one or more radiating elements, and each one of the plurality of the fourth sub-arrays has the same number of radiating elements as each one of the plurality of the first sub-arrays, wherein each one of the plurality of the first sub-arrays and each one of the plurality of the fourth sub-arrays has two or more radiating elements.