Abstract: In a coaxial plug-connector part with a cap nut arranged in a rotatable manner on an outer conductor of a coaxial line system and with a ball bearing between cap nut and outer conductor, the ball bearing cooperates with a bearing bush. The ball bearing and the bearing bush are held within the cap nut by a bearing cover screw-connected to the cap nut, and this enclosed structural group can be fitted, via a continuous internal borehole of the bearing bush, onto the outer conductor of the coaxial line system to be connected.

Abstract: The invention relates to a coaxial plug connector element comprising a metal union nut that is arranged in a rotatable manner on a metal outer conductor and can be screwed onto the external thread of the counter plug connector element. Means for the thermal decoupling of the plug connector element are provided on the inside of the device.

Abstract: In a microwave module with at least one semiconductor chip, which provides on its upper side a connecting-line structure formed in particular as a coplanar line, which is connected to at least one adjacent incoming and/or outgoing line structure formed on the upper side of the substrate, the chip is glued with its underside and all lateral surfaces, on which no high-frequency connecting lines lead to the chip, within a recess of a metal part with good thermal conduction.

Abstract: Within a coaxial line, the supporting rings are injection-molded directly onto the inner conductor using synthetic-material injection technology. Furthermore, a circumferential gluing groove, by means of which the supporting ring is glued in the outer conductor through the introduction of glue, is formed on the outer circumference of the supporting ring.

Abstract: In a microwave transition from a coaxial line (1) to a coplanar line system (3), in a longitudinal hole (5) of an outer conductor housing (6), the round inner conductor (4) of the coaxial line (1) continues in a planar inner conductor in the form of a narrow piece of foil (9), of an elastically flexible insulating material and metallised on at least one side. The end of this planar inner conductor (9, 10) then narrows in a transition section (16) to the width of a coplanar middle conductor (13; 20), with coplanar earthing areas (14, 15; 21, 22) on both sides.