Abstract: Base station antennas include first and second RF ports, a first array of radiating elements that includes a first column of radiating elements, a first additional radiating element and a second additional radiating element, where each of the radiating elements in the first array of radiating elements are coupled to the first RF port and not to the second RF port, and a second array of radiating elements that includes a second column of radiating elements, a third additional radiating element and a fourth additional radiating element, where each of the radiating elements in the second array of radiating elements are coupled to the second RF port and not to the first RF port. The first through fourth additional radiating elements may form a third column of radiating elements that is positioned between the first column of radiating elements and the second column of radiating elements.

Abstract: A base station antenna includes a calibration circuit that has a plurality of pairs of directional couplers and an antenna array that includes a plurality of columns of radiating elements. The first polarization radiators of the radiating elements in each column are electrically connected to a first directional coupler of a respective one of the pairs, and the second polarization radiators of the radiating elements in the column are electrically connected to a second directional coupler of the respective one of the pairs. The directional couplers may be arranged in a manner that reduces in-column coupling and/or that reduces cross-column coupling between adjacent columns of radiating elements.