Abstract: A mobile communications antenna comprises at least one antenna housing with a housing front side, a housing rear side, a first lateral housing side and a second lateral housing side opposite to the first. In the antenna housing, there are multiple radiating elements or pairs of radiating elements. The antenna further includes at least two amplifier modules, wherein each amplifier module comprises a first connection port and a second connection port and the amplifier modules are mounted on the exterior of the antenna housing. The connection ports are connected to corresponding first and second connection contact devices via plug-in connections. At least one signal processing and/or control unit is disposed in a housing, which is separate from the amplifier modules, in or on the antenna housing of the mobile communications antenna.

Abstract: A high-frequency filter with a coaxial design has at least one resonator with a first inner conductor and an outer conductor housing. The outer conductor housing comprises a housing base, a housing cover which is arranged at a distance from the housing base, and a peripheral housing wall between the housing base and the housing cover. The first inner conductor is galvanically connected to the housing base and extends axially from the housing base in the direction of the housing cover. The resonator comprises a second internal conductor which is galvanically connected to the housing cover and extends axially from the housing cover in the direction of the housing base. The first and/or second inner conductor has an inner conductor bore, and a tuning element is arranged in one inner conductor bore in a thread-free axially movable manner. The tuning element is arranged in a sleeve or bushing and optionally or in addition thereto has an enlarged elastic region.