BROADBAND OMNIDIRECTIONAL ANTENNA

The invention relates to an improved antenna which is distinguished by, among other things, the following features: the antenna has a monopole radiator (11), which is vertically polarized; the antenna has at least two horizontally polarized radiators, which lie offset from each other in a circumferential direction about a central axis (Z); the antenna has a reflector (1), in front of which the at least two horizontally polarized radiators and the monopole radiator (11) are arranged at a distance (A); the at least two horizontally polarized radiators each comprise a Vivaldi antenna (5); the Vivaldi antennas (5) have a central and/or feeding surface (123), which forms a feeding plane (123′), in which an electrically conductive layer (27, 127) having slot lines (29′) that widen in a radiation direction is formed or provided, -the feeding plane (123′) is arranged at a distance (A) from the reflector (1); and the electrically conductive layer (27, 127) is led out of the feeding plane (123′), wherein at least one arcuate and/or bent extension (27a, 127a) is formed.