Wide band array antenna

An antenna array (106) which in use emits radiation in two respectively orthogonally polarised directions, the array including a plurality of elements, the elements including at least one element of a first type and at least four elements of a second type wherein the element of the first type comprises part of two balanced feeds with two elements of the second type and the element of the first type is capacitively coupled to two further elements of the second type, wherein the elements used to produce radiation in a first direction lie in a first plane (104), the elements used to produce radiation in a second direction lie in a second plane (102), and the first and second planes are spaced apart, and the element of the first type includes two portions, one of which lies in the first plane and one of which lies in the second plane.