Abstract: An antenna array includes an array of antenna bodies (121, 122) arranged on a planar structure (110), which, in turn, contains a circuit board (210) with a ground-plane layer (420). The array of antenna bodies (121, 122) is arranged on a top side of the circuit board (210). Each of the antenna bodies (121, 122) is dome shaped and attached to the top side of the circuit board (210) along its base. Each of the antenna bodies (121, 122) is connected to a respective top transmission line (450) configured to convey microwave signals to and/or from said antenna bodies (121, 122). The top transmission lines (450) are further connected to bottom transmission lines (430) via coaxial probes (440) through the ground-plane layer (420). A resonance cavity (460) is arranged below the top side of the circuit board (210) between each of the antenna bodies (121, 122). This accomplishes a highly compact design that can be produced in a cost-efficient manner.

Abstract: An antenna including a dipole antenna element having central feeding points, a common mode rejection filter, a first length of a two-conductor transmission line, and a common mode rejection filter arranged and connected between a far end of the first length of the two-conductor transmission line and the feeding points of the dipole antenna element. The first length of the two-conductor transmission line is arranged to extend from a ground plane to a first height where the first length of the two-conductor transmission line is connected to the common mode rejection filter.

Abstract: An antenna including a dipole antenna element having central feeding points, a common mode rejection filter, a first length of a two-conductor transmission line, and a common mode rejection filter arranged and connected between a far end of the first length of the two-conductor transmission line and the feeding points of the dipole antenna element. The first length of the two-conductor transmission line is arranged to extend from a ground plane to a first height where the first length of the two-conductor transmission line is connected to the common mode rejection filter.