CN212485526U

CN212485526U - Antenna with a shield

Info

Publication number: CN212485526U
Application number: CN202020763451.1U
Authority: CN
Inventors: 贾飞飞; 李明超; 杨仲凯; 苏国生; 王强; 薛泉
Original assignee: South China University of Technology SCUT; Comba Telecom Technology Guangzhou Ltd
Current assignee: South China University of Technology SCUT; Comba Telecom Technology Guangzhou Ltd
Priority date: 2020-05-09
Filing date: 2020-05-09
Publication date: 2021-02-05
Anticipated expiration: 2030-05-09

Abstract

The utility model provides an antenna, its technical scheme main points are that the antenna includes the reflecting plate and sets up in the radiating element of reflecting plate both sides and move the looks ware, the reflecting plate respectively with the radiating element with move looks ware insulating connection, the radiating element includes the feed piece for the radiation arm feed, move the looks ware and include the cavity and install the phase-shifting circuit in the cavity, the feed piece passes the reflecting plate and penetrate the cavity with the phase-shifting circuit electricity is connected. Through with radiating element, reflecting plate and move looks ware range upon range of setting, radiating element's feed piece extends to and moves looks ware in and be connected with phase shift circuit, need not external feeder cable, makes the assembly structure of antenna simpler, has reduced the solder joint, avoids because the hidden danger that the solder joint problem appears, reduces feeder cable moreover and has also avoided dielectric loss, has improved antenna gain.

Description

Antenna with a shield

Technical Field

The utility model relates to a mobile communication field especially relates to an antenna.

Background

The radiation unit and the phase shifter are two core components of the electrically tunable antenna. In the conventional design, the radiation unit and the phase shifter are usually designed separately, and after the design is finished, the radiation unit and the phase shifter are electrically connected in a PCB (printed circuit board) or coaxial cable mode and the like, so that the electromagnetic wave radiation and the electric scanning control are ensured. The assembling and connecting mode has the problems of complex assembling and more fastening points.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an antenna of assembly structure is simple.

In order to achieve the above object, the present invention provides the following technical solutions:

an antenna comprises a reflecting plate, a radiation unit and a phase shifter, wherein the radiation unit and the phase shifter are arranged on two sides of the reflecting plate, the reflecting plate is respectively in insulation connection with the radiation unit and the phase shifter, the radiation unit comprises a feed sheet for feeding a radiation arm, the phase shifter comprises a cavity and a phase shifting circuit arranged in the cavity, and the feed sheet penetrates through the reflecting plate and penetrates into the cavity to be electrically connected with the phase shifting circuit.

Further setting; the bottom of the balun of the radiation unit is provided with a fastening hole, the cavity is provided with a mounting hole for a fastening piece to pass through, and the fastening piece passes through the mounting hole and the reflecting plate and penetrates into the fastening hole to fix the radiation unit, the reflecting plate and the phase shifter mutually.

Further setting: a concave-convex matching structure is arranged between the cavity and the balun of the radiation unit, and the cavity and the balun are welded and fixed with each other through the concave-convex matching structure.

Further setting: the radiation unit comprises two feed pieces, the two feed pieces are respectively corresponding to two pairs of radiation arm feeds which are vertically polarized, the cavity is provided with two sub-cavities, each sub-cavity is internally provided with the phase shift circuit, and the two feed pieces are correspondingly electrically connected with the phase shift circuits in the two sub-cavities.

Further setting: the phase shift circuits in the two sub-cavities are arranged in parallel along the insertion direction of the feed sheet.

Further setting: the phase shift circuits in the two sub-cavities are arranged side by side and are perpendicular to the insertion direction of the feed sheet.

Further setting: a first insulating part for insulating the radiation unit and the reflecting plate from each other is arranged between the radiation unit and the reflecting plate, and a second insulating part for insulating the reflecting plate and the cavity is arranged between the reflecting plate and the cavity.

Further setting: the first insulating part comprises an insulating seat, and the insulating seat is provided with a containing groove for containing the balun of the radiation unit.

Further setting: the insulating seat bottom is offered and is supplied the dodge hole that the feed piece passed, just insulating seat bottom in dodge hole department extension be equipped with pass the reflecting plate and penetrate to the cavity in make feed piece and reflecting plate and cavity mutual insulation's extension.

Further setting: the bottom of the insulating seat extends to be provided with an elastic buckle, and the top wall of the cavity is provided with a clamping hole through which the elastic buckle can pass and be hooked and fixed.

Further setting: the elastic buckle comprises two clamping hooks facing away from each other, a deformation gap is formed between the two clamping hooks, a communicating hole communicated with the deformation gap is formed in the bottom of the insulating base, and a limiting column capable of penetrating through the communicating hole and being inserted into the deformation gap so as to limit deformation of the clamping hooks is arranged at the bottom of the balun.

Further setting: the inner wall of the accommodating groove is provided with an elastic clamping block, and the sidewall of the balun is provided with a positioning clamping groove for clamping the elastic clamping block.

Compared with the prior art, the utility model discloses a scheme has following advantage:

1. the utility model relates to an among the antenna, through with radiating element, reflecting plate and move the range upon range of setting of looks ware, radiating element's feed piece extends to and is connected with phase shift circuit in moving the ware, need not external feeder cable, makes the assembly structure of antenna simpler, has reduced the solder joint, avoids because the hidden danger that solder joint problem appears, reduces feeder cable moreover and has also avoided dielectric loss, has improved antenna gain.

2. The utility model relates to an among the antenna, radiating element and the cavity that moves the looks ware adopt two kinds of connected modes of fastener fixed and welded fastening, adopt the fixed mode of fastener, and the cavity need not to electroplate, has improved intermodulation stability, reduces the technological requirement, adopts welded fastening's mode, can improve the connection reliability.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural diagram of an embodiment of an antenna according to the present invention;

fig. 2 is an exploded view of an embodiment of the antenna of the present invention;

fig. 3 is another exploded view of an embodiment of the antenna of the present invention;

fig. 4 is a bottom view of an embodiment of the antenna of the present invention;

fig. 5 is an exploded view of another embodiment of the antenna of the present invention;

fig. 6 is an exploded view of another embodiment of the antenna of the present invention;

fig. 7 is an exploded view of another embodiment of the antenna of the present invention;

fig. 8 is a schematic perspective view of another embodiment of the antenna of the present invention;

fig. 9 is an exploded view of another embodiment of the antenna of the present invention.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present invention, and should not be construed as limiting the present invention.

As shown in fig. 1 to 4, the utility model provides an antenna, include reflecting plate 1, radiating element 2 and move looks ware 3, radiating element 2 with move looks ware 3 branch and locate reflecting plate 1's both sides, reflecting plate 1 respectively with radiating element 2 with move looks ware 3 insulated connection, radiating element 2 includes radiating arm 21, be used for supporting radiating arm 21's balun 22 and be used for the feed piece 23 for radiating arm 21 feed, move looks ware 3 and include cavity 31, install phase shift circuit 32 in cavity 31 and locate the phase shift medium 33 of phase shift circuit 32 both sides, feed piece 23 passes reflecting plate 1 and penetrates in the cavity 31 with phase shift circuit 32 electricity is connected.

Through with radiating element 2, reflecting plate 1 and move looks ware 3 range upon range of setting, radiating element 2's feed piece 23 extends to and is connected with phase shift circuit 32 in moving looks ware 3, need not external feeder cable, makes the assembly structure of antenna simpler, has reduced the solder joint, avoids because the hidden danger that the solder joint problem appears, reduces feeder cable moreover and has also avoided dielectric loss, has improved antenna gain.

Further, a first insulating member 4 for insulating the radiation unit 2 and the reflection plate 1 from each other is provided between the radiation unit and the reflection plate 1, and a second insulating member 5 for insulating the reflection plate 1 and the cavity 31 from each other is provided between the reflection plate and the cavity. Wherein the second insulating member 5 comprises an insulating plate which is plate-shaped and is disposed between the reflection plate 1 and the cavity 31 for insulation. The first insulating member 4 may be in a shell shape and sleeved below the balun 22 of the radiation unit 2, or may be in a plate shape and disposed between the balun 22 and the reflecting plate 1.

Further, the radiation unit 2 includes two the feed piece 23, two the feed piece 23 corresponds the two pairs of radiation arms 21 feeds for vertical polarization respectively, cavity 31 is equipped with two sub-cavities 311, every install in the sub-cavity 311 the phase shift circuit 32, cavity 31 is close to and has seted up the perforation 312 that supplies feed piece 23 to pass on the outer wall of reflecting plate 1, two the feed piece 23 passes perforation 312 and the corresponding phase shift circuit 32 electricity that is connected with in two sub-cavities 311. In this embodiment, the cavity 31 is further opened with a welding window 313 for a welding tool to extend into the cavity for welding the feeding plate 23 and the phase shift circuit 32.

Specifically, the cavity 31 may be disposed perpendicular to the reflection plate 1, or may be disposed parallel to the reflection plate 1, that is, the phase shift circuits 32 in the two sub-cavities 311 may be disposed parallel to each other along the insertion direction of the feeding sheet 23, and the phase shift circuits 32 in the two sub-cavities 311 may also be disposed side by side and perpendicular to the insertion direction of the feeding sheet 23.

The utility model discloses in, cavity 31 and radiating element 2 can be connected fixedly with the help of fastener 6, also can fix through the welding. The connecting and fixing are carried out by the fastening piece 6, the cavity 31 does not need to be electroplated, the intermodulation stability is improved, the process requirement is reduced, the connecting reliability of the cavity and the cavity can be improved by adopting a welding and fixing mode, and the assembling process is reduced.

In one embodiment, a fastening hole is formed at the bottom of the balun 22, a mounting hole 314 through which a fastening member 6 can pass is formed in the cavity 31, and the fastening member 6 passes through the mounting hole 314 and the reflection plate 1 and penetrates into the fastening hole to fix the radiation unit 2, the reflection plate 1 and the phase shifter 3 to each other. The reflecting plate 1 is provided with a position avoiding hole 11, and the position avoiding hole 11 can be used for the insulating base to pass through.

In the present embodiment, the cavity 31 is disposed parallel to the reflection plate 1, that is, the phase shift circuits 32 in the two sub-cavities 311 are disposed side by side and perpendicular to the insertion direction of the feeding sheet 23. Preferably, the cavity 31 has a symmetrical structure, and a space is formed between two sub-cavities 311 in the same layer, and the space is located in the middle of the cavity 31.

In this embodiment, the first insulating member 4 is in a shell shape, and the first insulating member 4 includes an insulating base, and the insulating base is provided with a receiving groove 41 for receiving the balun 22. By arranging the insulating seat between the reflecting plate 1 and the balun 22, the insulating seat plays a role in insulating the reflecting plate 1 and the radiation unit 2 and fixing the radiation unit 2, so that the connection reliability of the radiation unit 2, the reflecting plate 1 and the phase shifter 3 is improved.

Furthermore, an avoiding hole for the feed sheet 23 to pass through is formed in the bottom of the insulating base, and an extending portion 42 extending through the reflecting plate 1 and penetrating into the cavity 31 to insulate the feed sheet 23 from the reflecting plate 1 and the cavity 31 is formed in the bottom of the insulating base at the avoiding hole.

By providing the extension portion 42 at the avoiding hole, the extension portion 42 can prevent the feeding sheet 23 from contacting the cavity 31 and affecting the feeding performance of the feeding sheet 23 while guiding the insertion of the feeding sheet 23 into the cavity 31.

Furthermore, the bottom of the insulating base extends to be provided with an elastic buckle 43, and a clamping hole 315 for the elastic buckle 43 to pass through and be hooked and fixed is formed on the top wall of the cavity 31. Specifically, the clamping hole 315 is opened in the middle of the cavity 31, the elastic buckle 43 is also arranged on the symmetrical center line of the bottom of the insulating base, and two elastic buckles 43 are symmetrically arranged. Through set up elasticity buckle 43 in the insulating seat bottom, utilize the cooperation structure of elasticity buckle 43 and card hole 315, improved the reliability of being connected of insulating seat and cavity 31.

In this embodiment, the elastic buckle 43 includes two opposite hooks 431, a deformation gap 432 is formed between the two hooks 431, a communication hole (not shown) communicating with the deformation gap 432 is formed at the bottom of the insulating base, and a limiting column 221 capable of passing through the communication hole and being inserted into the deformation gap 432 to limit the deformation of the hooks 431 is disposed at the bottom of the balun 22.

Specifically, during assembly, the elastic clip 43 of the insulating base is inserted into the clip hole 315 of the cavity 31, then the balun 22 of the radiating unit 2 is installed into the accommodating groove 41 of the insulating base, and the limiting column 221 on the balun 22 passes through the communication hole on the insulating base and is inserted into the deformation gap 432 in the elastic clip 43, so as to limit deformation of the elastic clip 43, thereby preventing the elastic clip 43 from coming out of the clip hole 315, and further improving the connection reliability between the insulating base and the cavity 31.

Preferably, an elastic latch 44 is disposed on an inner wall of the receiving groove 41, and a positioning latch 222 for latching the elastic latch 44 is disposed on a side wall of the balun 22. Specifically, the side wall of the insulating base is provided with a deformation notch 45, the elastic clamping block 44 is connected in the deformation notch 45, and the elastic clamping block 44 is provided with a guide surface, when the balun 22 is inserted into the accommodating groove 41, the elastic clamping block 44 is extruded to deform outwards, and when the balun 22 is completely inserted into the accommodating groove 41, the elastic clamping block 44 resets and is embedded into the positioning clamping groove 222 on the side wall of the balun 22, so that the radiation unit 2 and the insulating base are mutually fixed, and the connection reliability of the radiation unit 2 and the insulating base is improved.

Further, a supporting portion 316 for supporting the reflection plate 1 is formed by extending an outer wall of the cavity 31 near one side of the reflection plate 1. The support portion 316 increases the support area of the reflector 1, and improves the support stability of the phase shifter 3 with respect to the reflector 1.

In another embodiment, as shown in fig. 5, the cavity 31 and the radiation unit 2 are also fixed by the fastener 6. In the present embodiment, the cavity 31 is disposed perpendicular to the reflection plate 1, that is, the phase shift circuits 32 in the two sub-cavities 311 may be disposed parallel to each other along the insertion direction of the feeding sheet 23.

In this embodiment, the first insulating member 4 is plate-shaped, the supporting portions 316 are also disposed on the cavity 31, and the cavity 31 is symmetrical, so that the supporting portions 316 are disposed on two sides of the cavity 31. The two supporting portions 316 are respectively provided with the mounting hole 314 for the fastening member 6 to pass through, the outer wall of the bottom of the balun 22 is correspondingly extended with two connecting portions 223, and the two connecting portions 223 are provided with the fastening holes (not shown in the figure). In this embodiment, the fastening hole is also a threaded hole.

In this embodiment, since the cavity 31 is perpendicular to the reflection plate 1, in order to facilitate the installation of the fastening member 6, the installation hole 314 is formed in the support portion 316, which can reduce the installation difficulty, increase the fastening area of the radiation unit 2 and the phase shifter 3, and improve the connection reliability of the radiation unit 2 and the phase shifter 3.

In another embodiment, as shown in fig. 6, the cavity 31 is welded and fixed to the radiation unit 2, a concave-convex matching structure is provided between the cavity 31 and the balun 22 of the radiation unit 2, and the cavity 31 and the balun 22 are welded and fixed to each other by the concave-convex matching structure. In the present embodiment, the cavity 31 is disposed parallel to the reflection plate 1, that is, the phase shift circuits 32 in the two sub-cavities 311 are disposed side by side and perpendicular to the insertion direction of the feeding sheet 23.

In this embodiment, the cavity 31 is provided with a clamping block 317 protruding from the middle of the outer wall of the reflector 1, and the bottom of the balun 22 is provided with a clamping groove 224, in other embodiments, the arrangement positions of the clamping block 317 and the clamping groove 224 can be interchanged. The clamping block 317 penetrates through the reflecting plate 1 and the insulating base and is inserted into the clamping groove 224 for welding, so that the cavity 31 and the balun 22 are more convenient to weld and fix, and the connection between the cavity 31 and the balun 22 is more reliable.

In this embodiment, two sub-cavities 311 are disposed adjacently, that is, no space is formed between the two sub-cavities 311, and therefore, in this embodiment, the elastic clip 43 is not disposed on the insulating base, and correspondingly, the cavity 31 is not provided with the clip hole 315 for the elastic clip 43 to pass through. The structure simplifies the production process of the cavity 31, reduces the holes on the cavity 31 and effectively improves the production efficiency of products. In other embodiments, a space may be formed between the two sub-cavities 311, and the elastic clip 43 is disposed on the insulating base, and the cavity 31 is correspondingly provided with a clip hole 315.

In this embodiment, the inner wall of the accommodating groove 41 is also provided with an elastic latch 44, and a positioning slot 222 for the elastic latch 44 to be latched is formed on the side wall of the balun 22.

In another embodiment, as shown in fig. 7 to 9, the cavity 31 and the balun 22 are also fixed to each other by welding through a male-female fit structure. In the present embodiment, the cavity 31 is disposed perpendicular to the reflection plate 1, that is, the phase shift circuits 32 in the two sub-cavities 311 may be disposed parallel to each other along the insertion direction of the feeding sheet 23.

The cavity 31 is also provided with the supporting portion 316, and the first insulating member 4 is also an insulating base. The outer wall of the bottom of the insulating base extends to form an extending portion 46, the extending portion 46 is provided with the elastic buckle 43, and the support portion 316 is correspondingly provided with a clamping hole 315 for fixing the elastic buckle 43. In this embodiment, four elastic fasteners 43 are disposed below the insulating base, and two fastening holes 315 are disposed on the supporting portion 316 at two sides of the cavity 31.

The elastic buckle 43 is arranged on the extension part 46 and can be matched with the support part 316 of the cavity 31, so that the effect of convenient installation can be realized, the connection area of the insulating seat and the cavity 31 can be increased, and the connection reliability of the insulating seat and the cavity 31 is improved.

Specifically, in the present embodiment, the radiation unit 2 is also installed in the receiving slot 41 of the insulating base, the elastic latch 44 on the sidewall of the insulating base is embedded in the positioning latch slot 222 of the balun 22, and the feeding tab 23 passes through the extending portion 42 at the bottom of the insulating base and then extends into the cavity 31 to be welded with the phase shift circuit 32.

In this embodiment, the bottom of the balun 22 is provided with an embedded block 225 that can pass through the reflection plate 1 and extend into the cavity 31, an embedded groove 318 that can be embedded by the embedded block 225 is formed in an outer wall of the cavity 31 near the reflection plate 1, the embedded groove 318 forms an opening in a side wall of the cavity 31, and the radiation unit 2 is embedded into the embedded groove 318 by the embedded block 225 and is welded and fixed to the cavity 31.

By means of the inlay block 225 and the inlay groove 318, the radiation unit 2 and the cavity 31 are connected with each other, the radiation unit 2 and the cavity 31 can be fixed with each other by welding the inlay block 225 and the inlay groove 318, in addition, the inlay groove 318 forms an opening on the side wall of the cavity 31, so that the inlay block 225 can be directly welded outside the cavity 31, the welding reliability is ensured, the welding difficulty is also reduced, and the production efficiency is improved.

The foregoing is only a partial embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides an antenna, includes the reflecting plate and sets up in the radiating element of reflecting plate both sides and move the looks ware, the reflecting plate respectively with the radiating element with move looks ware insulated connection, the radiating element is including the feed piece for the radiation arm feed, move the looks ware and include the cavity and install the phase shift circuit in the cavity, characterized by: the feed sheet penetrates through the reflecting plate and penetrates into the cavity to be electrically connected with the phase-shifting circuit.

2. The antenna of claim 1, wherein; the bottom of the balun of the radiation unit is provided with a fastening hole, the cavity is provided with a mounting hole for a fastening piece to pass through, and the fastening piece passes through the mounting hole and the reflecting plate and penetrates into the fastening hole to fix the radiation unit, the reflecting plate and the phase shifter mutually.

3. The antenna of claim 1, wherein: a concave-convex matching structure is arranged between the cavity and the balun of the radiation unit, and the cavity and the balun are welded and fixed with each other through the concave-convex matching structure.

4. The antenna of claim 1, wherein: the radiation unit comprises two feed pieces, the two feed pieces are respectively corresponding to two pairs of radiation arm feeds which are vertically polarized, the cavity is provided with two sub-cavities, each sub-cavity is internally provided with the phase shift circuit, and the two feed pieces are correspondingly electrically connected with the phase shift circuits in the two sub-cavities.

5. The antenna of claim 4, wherein: the phase shift circuits in the two sub-cavities are arranged in parallel along the insertion direction of the feed sheet.

6. The antenna of claim 4, wherein: the phase shift circuits in the two sub-cavities are arranged side by side and are perpendicular to the insertion direction of the feed sheet.

7. The antenna of claim 1, wherein: a first insulating part for insulating the radiation unit and the reflecting plate from each other is arranged between the radiation unit and the reflecting plate, and a second insulating part for insulating the reflecting plate and the cavity is arranged between the reflecting plate and the cavity.

8. The antenna of claim 7, wherein: the first insulating part comprises an insulating seat, and the insulating seat is provided with a containing groove for containing the balun of the radiation unit.

9. The antenna of claim 8, wherein: the insulating seat bottom is offered and is supplied the dodge hole that the feed piece passed, just insulating seat bottom in dodge hole department extension be equipped with pass the reflecting plate and penetrate to the cavity in make feed piece and reflecting plate and cavity mutual insulation's extension.

10. The antenna of claim 8, wherein: the bottom of the insulating seat extends to be provided with an elastic buckle, and the top wall of the cavity is provided with a clamping hole through which the elastic buckle can pass and be hooked and fixed.

11. The antenna of claim 10, wherein: the elastic buckle comprises two clamping hooks facing away from each other, a deformation gap is formed between the two clamping hooks, a communicating hole communicated with the deformation gap is formed in the bottom of the insulating base, and a limiting column capable of penetrating through the communicating hole and being inserted into the deformation gap so as to limit deformation of the clamping hooks is arranged at the bottom of the balun.

12. The antenna of claim 8, wherein: the inner wall of the accommodating groove is provided with an elastic clamping block, and the sidewall of the balun is provided with a positioning clamping groove for clamping the elastic clamping block.