Antenna device, feeding cable module thereof, and metallic cable holder

1. An antenna device, comprising:

a metal plate having a first surface and a second surface that is opposite to the first surface;

a radiation antenna disposed on the first surface of the metal plate;

a feeding cable arranged at a side of the metal plate away from the radiation antenna and connected to the radiation antenna by passing through the metal plate; and

a plurality of metallic cable holders each formed by winding one metal wire, wherein each of the metallic cable holders includes:

two fixing portions arranged along a straight direction and fixed to the second surface of the metal plate; and

a cable arrangement portion connected between the two fixing portions and including a plurality of rack segments regularly arranged along the straight direction, wherein each of the rack segments has an insertion opening arranged away from the metal plate, and an opening diameter of the insertion opening of each of the rack segments is smaller than a cable diameter of the feeding cable,

wherein when the feeding cable passes through the insertion opening of at least one of the rack segments, the feeding cable is fixed in position by the at least one of the rack segments and is surrounded by the at least one of the rack segments with a predetermined angle that is smaller than 360 degrees;

wherein the metal plate has a plurality of notches and a plurality of buckling arms respectively extending from the inner walls of the notches away from the first surface, two of the buckling arms adjacent to each other are formed by curvedly extending along directions away from each other, and each of the metallic cable holders is fixed to the metal plate by having the two fixing portions thereof be respectively sleeved around two of the buckling arms adjacent to each other.

2. The antenna device according to claim 1 , wherein in any one of the metallic cable holders, the cable arrangement portion curvedly extends from one of the two fixing portions toward another one of the two fixing portions along a distribution plane.

3. The antenna device according to claim 2 , wherein in any one of the metallic cable holders, the distribution plane is orthogonal to the second surface of the metal plate.

4. The antenna device according to claim 2 , wherein when the feeding cable passing through the insertion opening is fixed in position by the at least one of the rack segments, the feeding cable is movable in a space surroundingly defined by the at least one of the rack segments.

5. The antenna device according to claim 2 , wherein in any one of the metallic cable holders, the cable arrangement portion includes a plurality of buffering segments, and any two of the rack segments adjacent to each other are connected to one of the buffering segments.

6. The antenna device according to claim 5 , wherein in any one of the metallic cable holders, each of the rack segments is in a shape of the letter “U” and any part of each of the rack segments is parallel or perpendicular to the straight direction, and any two of the rack segments adjacent to each other have a distance there-between that is smaller than the opening diameter of any one of the rack segments.

7. The antenna device according to claim 5 , wherein in any one of the metallic cable holders, each of the rack segments has a shape of the symbol “Ω” that includes an arc sub-segment, and wherein in each of the rack segments, the insertion opening has a center angle with respect to a center of circle of the arc sub-segment, and the center angle is smaller than 90 degrees.

8. The antenna device according to claim 1 , wherein in any one of the metallic cable holders, the cable arrangement portion includes a plurality of loop-like sub-segments and a plurality of carrying sub-segments, and any two of the loop-like sub-segments adjacent to each other are connected to one of the carrying sub-segments so as to jointly define one of the rack segments, and wherein in each of the rack segments, a minimum distance between the two loop-like sub-segments is defined as the insertion opening.

9. The antenna device according to claim 8 , wherein in any one of the metallic cable holders, the two fixing portions are connected to two of the loop-like sub-segments, respectively, and any two of the rack segments adjacent to each other jointly share one of the loop-like sub-segments.

10. The antenna device according to claim 8 , wherein in any one of the rack segments, the carrying sub-segment is in an arced shape and has a radius of curvature that is greater than or equal to a radius of curvature of any one of the loop-like sub-segments.

11. The antenna device according to claim 1 , wherein in any one of the metallic cable holders, the cable arrangement portion is in a spiral shape with respect to an axis line, any portion of the cable arrangement portion having 1-1.5 pitches is defined as one of the rack segments, the opening diameter of the insertion opening of any one of the rack segments is equal to 1 pitch, and any one of the rack segments is configured to clutch the feeding cable.

12. The antenna device according to claim 11 , wherein in any one of the metallic cable holders, the cable arrangement portion has a pitch diameter that is greater than the cable diameter of the feeding cable and that, is smaller than 2.5 times of the cable diameter of the feeding cable.

13. The antenna device according to claim 11 , wherein in any one of the metallic cable holders, the feeding cable is not inserted into the cable arrangement portion along the axis line.

14. The antenna device according to claim 1 , wherein the metallic cable holders are electrically coupled to the metal plate and any one of the rack segments is configured to clutch a grounding portion of the feeding cable, so that the grounding portion of the feeding cable is electrically coupled to the metal plate through the corresponding rack segment.

15. The antenna device according to claim 1 , wherein in each of the rack segments, the opening diameter of the insertion opening is greater than 35% of the cable diameter of the feeding cable.

16. The antenna device according to claim 1 , wherein the feeding cable has a plurality of bending segments, and a part of each of the bending segments is fixed in position by one of the metallic cable holders.

17. A feeding cable module of an antenna device, comprising:

a feeding cable; and

a metallic cable holder integrally formed as a one-piece structure and including:

two fixing portions arranged along a straight direction; and

a cable arrangement portion connected between the two fixing portions and including a plurality of rack segments regularly arranged along the straight direction, wherein each of the rack segments has an insertion opening, and an opening diameter of the insertion opening of each of the rack segments is smaller than a cable diameter of the feeding cable,

wherein when the feeding cable passes through the insertion opening of at least one of the rack segments, the feeding cable is fixed in position by the corresponding rack segment and is surrounded by the corresponding rack segment with a predetermined angle that is smaller than 360 degrees;

wherein the cable arrangement portion is in a spiral shape with respect to an axis line, any portion of the cable arrangement portion having 1-1.5 pitches is defined as one of the rack segments, the opening diameter of the insertion opening of any one of the rack segments is equal to 1 pitch, and any one of the rack segments is configured to clutch the feeding cable.

18. A metallic cable holder of an antenna device, comprising:

two fixing portions arranged along a straight direction; and

a cable arrangement portion connected between the two fixing portions and including a plurality of rack segments regularly arranged along the straight direction, wherein each of the rack segments has an insertion opening, and the insertion opening of each of the rack segments is configured to hold a feeding cable having a cable diameter that is greater than an opening diameter of the insertion opening;

wherein the cable arrangement portion includes a plurality of loop-like sub-segments and a plurality of carrying sub-segments, and any two of the loop-like sub-segments adjacent to each other are connected to one of the carrying sub-segments so as to jointly define one of the rack segments, and wherein in each of the rack segments, a minimum distance between the two loop-like sub-segments is defined as the insertion opening.

19. A metallic cable holder of an antenna device, comprising:

two fixing portions arranged along a straight direction; and

a cable arrangement portion connected between the two fixing portions and including a plurality of rack segments regularly arranged along the straight direction, wherein each of the rack segments has an insertion opening, and the insertion opening of each of the rack segments is configured to hold a feeding cable having a cable diameter that is greater than an opening diameter of the insertion opening;

wherein each of the rack segments has a shape of the symbol “Ω” that includes an arc sub-segment, and wherein in each of the rack segments, the insertion opening has a center angle with respect to a center of circle of the arc sub-segment, and the center angle is smaller than 90 degrees.