An antenna (100, 700), comprising: a broadband vertically polarized monopole radiating element (106, 706); a reflector (112, 712) defining a first plane generally perpendicular to a vertical axis (114, 714) of said monopole radiating element (106, 706); a first plurality of horizontally polarized radiating elements (108, 708) arranged generally concentrically with respect to said monopole radiating element (106, 706), said first plurality of horizontally polarized radiating elements (108, 708) defining a second plane generally perpendicular to said vertical axis (114, 714), said second plane being offset from said first plane in a direction along said vertical axis (114, 714); and a feed arrangement (216, 218, 716) for feeding said monopole (106, 706) and horizontally polarized radiating elements (108, 708); characterized in that: said monopole radiating element (106, 706) comprises a conical radiating element, said conical radiating element comprising an upper conductive cylindrical element and a lower conductive conical element, said upper cylindrical and lower conical elements being held in a partially overlapping configuration by means of an inner spacer element and an outer supporting stand; and the antenna (100, 700) also comprises a second plurality of horizontally polarized radiating elements arranged generally concentrically with respect to said monopole radiating element (106, 706), said second plurality of horizontally polarized radiating elements defining a third plane generally perpendicular to said vertical axis (114, 714), said third plane being offset from said first and said second planes in a direction along said vertical axis (114, 714). a broadband vertically polarized monopole radiating element (106, 706); a reflector (112, 712) defining a first plane generally perpendicular to a vertical axis (114, 714) of said monopole radiating element (106, 706); a first plurality of horizontally polarized radiating elements (108, 708) arranged generally concentrically with respect to said monopole radiating element (106, 706), said first plurality of horizontally polarized radiating elements (108, 708) defining a second plane generally perpendicular to said vertical axis (114, 714), said second plane being offset from said first plane in a direction along said vertical axis (114, 714); and a feed arrangement (216, 218, 716) for feeding said monopole (106, 706) and horizontally polarized radiating elements (108, 708); characterized in that: said monopole radiating element (106, 706) comprises a conical radiating element, said conical radiating element comprising an upper conductive cylindrical element and a lower conductive conical element, said upper cylindrical and lower conical elements being held in a partially overlapping configuration by means of an inner spacer element and an outer supporting stand; and the antenna (100, 700) also comprises a second plurality of horizontally polarized radiating elements arranged generally concentrically with respect to said monopole radiating element (106, 706), said second plurality of horizontally polarized radiating elements defining a third plane generally perpendicular to said vertical axis (114, 714), said third plane being offset from said first and said second planes in a direction along said vertical axis (114, 714). said monopole radiating element (106, 706) comprises a conical radiating element, said conical radiating element comprising an upper conductive cylindrical element and a lower conductive conical element, said upper cylindrical and lower conical elements being held in a partially overlapping configuration by means of an inner spacer element and an outer supporting stand; and the antenna (100, 700) also comprises a second plurality of horizontally polarized radiating elements arranged generally concentrically with respect to said monopole radiating element (106, 706), said second plurality of horizontally polarized radiating elements defining a third plane generally perpendicular to said vertical axis (114, 714), said third plane being offset from said first and said second planes in a direction along said vertical axis (114, 714).