Solder connection between a coaxial cable and a printed circuit board arrangement and a mobile communication antenna comprising such a solder connection

1 . A solder connection between a coaxial cable and a printed circuit board arrangement, in particular for a mobile communication antenna, comprising the following features:

the coaxial cable comprises an inner conductor, an outer conductor and a dielectric, wherein the dielectric is arranged between the inner conductor and the outer conductor;

the printed circuit board arrangement comprises an outer conductor contact area which is configured to contact the outer conductor galvanically and an inner conductor contact area which is configured to contact the inner conductor galvanically;

the outer conductor contact area comprises an outer conductor receiving opening;

the coaxial cable runs at an angle to the printed circuit board arrangement, wherein a part of the outer conductor is arranged in the outer conductor receiving opening and wherein the inner conductor is arranged at the inner conductor contact area;

a first solder joint galvanically connects at least a part of the outer conductor to the outer conductor contact area;

a second solder joint galvanically connects at least a part of the inner conductor to the inner conductor contact area, wherein the outer conductor receiving opening extends through the printed circuit board arrangement completely.

2 . The solder connection according to claim 1 , characterized by the following features:

the outer conductor contact area comprises a metal layer extending at least partially around the outer conductor receiving opening; and/or

the outer conductor contact area comprises a metallization which at least partially covers an inner wall of the outer conductor receiving opening.

3 . The solder connection according to claim 1 , characterized by the following features:

the outer conductor contact area and the inner conductor contact area are free of solder resist;

solder resist and/or a solder resist foil is applied between the outer conductor contact area and the inner conductor contact area.

4 . The solder connection according to claim 1 , characterized by the following features:

the outer conductor receiving opening extends through the printed circuit board arrangement partly or completely;

the outer conductor receiving opening is defined by a first and a second end and a first and a second side;

the second end is located closer to the inner conductor contact area than the first end;

the outer conductor receiving opening tapers toward the first end;

the second end comprises a stop against which the dielectric of the coaxial cable is in contact with.

5 . The solder connection according to claim 4 , characterized by the following features:

the second end comprises rounded corner areas;

the stop is located between the two rounded corner areas and is located closer to the first end than the two rounded corner areas.

6 . The solder connection according to claim 1 , characterized by the following feature:

the inner conductor contact area is free of a recess.

7 . The solder connection according to claim 1 , characterized by the following features:

the inner conductor contact area comprises an inner conductor receiving hole;

the inner conductor is bent and inserted with its free end into the inner conductor receiving hole.

8 . The solder connection according to claim 1 , characterized by the following features:

the inner conductor contact area comprises an inner conductor receiving opening;

the inner conductor receiving opening extends partly or completely through the printed circuit board arrangement;

the inner conductor contact area comprises a metal layer extending at least partially around the inner conductor receiving opening; and/or

the inner conductor contact area comprises a metallization which at least partially covers an inner wall of the inner conductor receiving opening.

9 . The solder connection according to claim 8 , characterized by the following feature:

the inner conductor receiving opening is a slotted hole.

10 . The solder connection according to claim 1 , characterized by the following features:

an angle (α) between the coaxial cable and the printed circuit board arrangement at the transition area between the coaxial cable and the printed circuit board arrangement is larger than 5°, 7°, 10°, 11°, 12°, 14°, 16°, 20°, 25°, 30° or larger than 35°; and/or

an angle (α) between the coaxial cable and the printed circuit board arrangement at the transition area between the coaxial cable and the printed circuit board arrangement is smaller than 37°, 33°, 28°, 23°, 18°, 15°, 13°, 11°, 9°, 8° or smaller than 6°.

11 . The solder connection according to claim 1 , characterized by the following features:

the outer conductor contact area and the inner conductor contact area are spaced apart from the nearest edge of the printed circuit board arrangement by more than 2 cm, 3 cm, 4 cm, 5 cm, 6 cm or by more than 7 cm; and/or

the outer conductor contact area and/or the inner conductor contact area comprises a plurality of vias.

12 . The solder connection according to claim 1 , characterized by the following features:

the coaxial cable is connected to the printed circuit board arrangement without the use of a connector; and/or

the first and the second solder joints are of a selective wave soldering type or of an automated piston soldering type.

13 . The solder connection according to claim 1 , characterized by the following features:

a holding device is provided;

the holding device comprises two elastic support arms;

the coaxial cable is clamped between the two elastic support arms.

14 . The solder connection according to claim 1 , characterized by the following feature:

a part of the outer conductor enters the outer conductor receiving opening and protrudes on the other side.

15 . A mobile communication antenna with a solder connection between a coaxial cable and a printed circuit board arrangement, in particular for the mobile communication antenna, wherein:

the solder connection comprises the following features:

the coaxial cable comprises an inner conductor, an outer conductor and a dielectric, wherein the dielectric is arranged between the inner conductor and the outer conductor;

the printed circuit board arrangement comprises an outer conductor contact area which is configured to contact the outer conductor galvanically and an inner conductor contact area which is configured to contact the inner conductor galvanically;

the outer conductor contact area comprises an outer conductor receiving opening;

the coaxial cable runs at an angle to the printed circuit board arrangement, wherein a part of the outer conductor is arranged in the outer conductor receiving opening and wherein the inner conductor is arranged at the inner conductor contact area;

a first solder joint galvanically connects at least a part of the outer conductor to the outer conductor contact area; and

a second solder joint galvanically connects at least a part of the inner conductor to the inner conductor contact area, wherein the outer conductor receiving opening extends through the printed circuit board arrangement completely; and

the mobile communication antenna is characterized by the following features:

a reflector arrangement is provided;

the reflector arrangement comprises one or more recesses;

the one or more recesses is or are at least partially or completely closed off by the printed circuit board arrangement;

a plurality of radiators is arranged on a first side of the reflector arrangement;

a phase shifter arrangement is arranged on a second side of the reflector arrangement;

different outputs of the phase shifter arrangement are connected to a coaxial cable, wherein the coaxial cable is connected to the printed circuit board arrangement via the solder connection;

signal connections of the radiators are connected galvanically to the phase shifter arrangement via the printed circuit board arrangement, the solder connection and the coaxial cable.