A high-frequency conductor system has a high-frequency housing which comprises a housing base, a housing cover which is at a distance from the housing base, and a housing wall which runs circumferentially between the housing base and the housing cover, as a result of which an accommodation space is formed. At least one cable-bound RF bushing is arranged within the accommodation space. The cable-bound RF bushing is electrically isolated from the high-frequency housing. A capacitive coupling element is arranged on at least one part of the circumference of the cable-bound RF bushing and is electrically connected to said cable-bound RF bushing. The capacitive coupling element has two end sides which are oriented transverse or perpendicular to the propagation direction of the cable-bound RF bushing. A first coupling web is electrically connected to the high-frequency housing and is arranged at a distance from the end side in order to generate a capacitive coupling.