CN216750279U

CN216750279U - 5G antenna

Info

Publication number: CN216750279U
Application number: CN202122258848.2U
Authority: CN
Inventors: 沈细荣; 鲍晋朝; 陈晓飞
Original assignee: Jiangsu Wutong Internet Of Things Technology Co ltd
Current assignee: Jiangsu Wutong Internet Of Things Technology Co ltd
Priority date: 2021-09-17
Filing date: 2021-09-17
Publication date: 2022-06-14
Anticipated expiration: 2031-09-17

Abstract

The utility model provides a 5G antenna which comprises a substrate, a support frame and a metal array, wherein the support frame is arranged on the substrate, the metal array is connected to the support frame, the metal array is provided with a grounding arm and a feeding point, and the metal array is connected to the substrate through the grounding arm and the feeding point. The utility model can cover three common channels in 5G mobile communication, realizes low profile design, thereby realizing installation in micro-station equipment, omnidirectional ceiling, coverage, antenna standing wave and out-of-roundness, and meeting the performance requirements of mobile operators.

Description

5G antenna

Technical Field

The utility model relates to the field of mobile communication, in particular to a 5G micro base station and pico station antenna omni-directional ceiling covering, and specifically relates to a 5 low-profile multi-band 5G antenna.

Background

In a mobile communication system, an antenna plays a crucial role, and coverage of a mobile communication network requires the antenna to be a carrier for transceiving electromagnetic waves required by network coverage. At present, many wireless communication systems are available, and at present, 4G has started to be used in a large scale globally, and for future development, the industry is beginning to explore new ways to research fifth-generation mobile communication technology, so that an antenna suitable for a 5G network is urgently needed in the industry.

Therefore, there is a need to provide a new solution.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problems in the prior art, the utility model discloses a 5G antenna, which has the following specific technical scheme:

the utility model provides a 5G antenna which comprises a substrate, a support frame and a metal array, wherein the support frame is arranged on the substrate, the metal array is connected to the support frame, the metal array is provided with a grounding arm and a feeding point, and the metal array is connected to the substrate through the grounding arm and the feeding point.

Furthermore, the base plate is a glass fiber epoxy resin copper-clad plate, the back surface of the base plate is a copper-clad layer, the front surface of the base plate is provided with a microstrip line, a coaxial line core wire welding point and a coaxial line grounding welding point, the base plate is also provided with a grounding arm welding hole and a feeding point welding hole, the feeding point welding hole is positioned at one end of the microstrip line, the coaxial line core wire welding point is positioned at the other end of the microstrip line, and the coaxial line grounding welding point is close to the coaxial line core wire welding point and positioned at one side edge of the base plate.

Furthermore, the number of the support frames is two, the two support frames are symmetrically positioned at two opposite sides of the base plate, the support frames are plastic support frames, the support frames are welded on the front surface of the base plate,

the grounding arm welding hole is a long hole, the grounding arm is used for connecting the metal oscillator in a grounding mode through being welded to the grounding arm welding hole, and the feeding point is used for connecting the metal oscillator and the microstrip line in a feeding mode through being welded to the feeding point welding hole.

Furthermore, the grounding arm comprises a first grounding arm and a second grounding arm, the grounding arm welding holes comprise a first grounding arm welding hole and a second grounding arm welding hole, the first grounding arm is welded at the first grounding arm welding hole, the second grounding arm is welded at the second grounding arm welding hole,

the metal array still includes first array (oscillator), second array and connects the coupling portion between first array and second array, first array erects one of them on the support frame, the second array erects on another support frame, first array includes first high frequency array and low frequency array, the second array includes second high frequency array and intermediate frequency array, the coupling position is located between two support frames and is close to the base plate coupling portion forms strong coupling with the base plate.

Furthermore, the first grounding arm, the second grounding arm and the metal side wall are respectively and vertically connected with the substrate, the first grounding arm and the second grounding arm are respectively and vertically adjacent to the metal side wall, the first grounding arm is close to one side of the substrate, and the second grounding arm is close to the other side of the substrate.

Furthermore, the coupling part is of a convex plane structure, the feed point is connected to the protruding end of the coupling part, and the feed point is welded in the feed point welding hole to connect the metal array with the microstrip line in a feed manner.

Further, the width of the first grounding arm is larger than that of the second grounding arm.

Furthermore, in the first array and the second array, one array generates resonance of a 1.8G frequency band, the other array generates a 2.6G frequency band, and the first array and the second array generate a 3.6G frequency band together.

Further, the support frame is the tetragonal body shape, the outside of support frame with the edge parallel and level of base plate, be provided with the hot melt post on the plastic support frame, the metal array passes through the hot melt welding of hot melt post on the support frame.

Further, the antenna is a low-profile multiband 5G antenna.

The utility model has the following beneficial effects:

1. the antenna is novel in design, simple and stable in structural design, the metal array is fixed on the plastic support through hot melting, the fixed whole body is welded on three reserved metallized through holes on the PCB through a welding process, the antenna is fed coaxially, and the coaxial wire is welded on a reserved welding position on the PCB. The antenna has simple integral design process and stable structure, and can ensure stable performance. The antenna is provided with two grounding arms which are respectively arranged at the left side and the right side of the antenna structure, wherein the two grounding arms are used as one part of the grounding of the PIFA antenna structure and one part of the fixed antenna structure, so that the antenna structure is stable after being welded.

2. The antenna provided by the utility model is provided with a convex coupling surface, the bandwidth of the antenna is widened by adding the convex coupling plane, the metal surface has the main function of forming strong coupling with a PCB, and the efficiency of widening the bandwidth of the antenna is realized by adjusting the height and the outline dimension of the metal surface and the ground. One end of the convex coupling surface is a feed point of the metal antenna, and the feed point is connected with the microstrip line on the PCB in a welding mode.

3. The antenna provided by the utility model meets the design requirement of three frequency bands, the antenna adopts a multi-array design to realize multi-mode, one array mainly generates resonance of a 1.8G frequency band, the other array generates a 2.6G frequency band, and because the bandwidth of a 3.6G channel is relatively wide, two arrays are adopted to form two modes to jointly generate the 3.6G frequency band. The resonance and bandwidth of the antenna are adjusted by adjusting the length, width, shape and mutual spacing of the elements.

4. The antenna can cover three common channels in 5G mobile communication, namely 1710-1880MHz-2490 MHz and 3300MHz-3600MHz frequency bands. The antenna realizes that the standing wave meets the requirement that the standing wave is less than 2.0 in a working frequency band, the antenna design can realize that the out-of-roundness of a vertical plane 60-degree angle is less than +/-3dB, the height of the antenna is only 10.5mm, and the low-profile design is realized, so that the antenna can be installed in a micro-station device, the ceiling is omnidirectional and covered, and the standing wave and the out-of-roundness of the antenna can meet the performance requirements of mobile operators.

Additional aspects and advantages of the utility model 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 utility model.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic diagram of a 5G antenna according to the present invention;

FIG. 2 is a schematic diagram of the exploded structure of FIG. 1;

FIG. 3 is a schematic diagram of the structure of the metal array of FIG. 2;

FIG. 4 is a schematic structural view of the support stand of FIG. 2;

FIG. 5 is a schematic view of the front side of the substrate of FIG. 2;

FIG. 6 is a schematic view of the backside of the substrate of FIG. 2;

FIG. 7 is a standing wave pattern for a 5G antenna of the present invention.

Wherein, 1-metal array, 2-support frame, 3-base plate, 110-first grounding arm, 111-second grounding arm, 10-first array, 100-low frequency oscillator, 102-first high frequency array, 11-second array,

102-an intermediate frequency oscillator, 103-a second high frequency oscillator, 12-a coupling part, 14-a metal side wall, 13-a feeding point, 30-a first grounding arm welding hole, 31-a second grounding arm welding hole, 32-a feeding point welding hole,

33-fixed hole, 34-microstrip line, 35-coaxial wire core wire welding point, 36-coaxial wire grounding welding point, 37-copper-clad layer on back surface of base plate.

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 or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the utility model and are not to be construed as limiting the utility model.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or may be connected through the interior of two elements or in interactive relation with one another. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Please refer to fig. 1 to 7.

As shown in fig. 1 and 2, the antenna of the present invention includes a substrate 3, a support frame 2 and a metal array 1, wherein the support frame 2 is disposed on the substrate 3, the metal array 1 is connected to the support frame 2, the metal array 1 has a ground arm and a feeding point 13, and the metal array 1 is connected to the substrate through the ground arm and the feeding point respectively.

The substrate 3 is a square Printed Circuit Board (PCB). The substrate 3 is a double-sided FR-4 plate, namely a glass fiber epoxy resin copper-clad plate, and the back of the substrate is a copper-clad layer, so that the substrate is convenient to be in good grounding contact with metal parts of equipment. The base plate 3 openly has microstrip line 34, conveniently carries out the feed and welds with the antenna array, and the design all around of base plate 3 has four screw holes 33, conveniently fixes with equipment, and the quantity and the position of screw hole can be adjusted according to the hole site and the requirement of equipment.

The base plate 3 openly still has coaxial line ground connection welding point 36 and coaxial line heart yearn welding point 35, still be provided with ground arm welding hole and feed point welding hole 32 on the base plate 3, feed point welding hole 32 is located the one end of microstrip line 34, coaxial line heart yearn welding point 35 is located the other end of microstrip line, coaxial line ground connection welding point 36 is close to coaxial line heart yearn welding point 35 is located a side of base plate 3.

The number of the support frames 2 is two, the two support frames 2 are symmetrically arranged on two opposite sides of the substrate 3, the support frames 2 are plastic support frames, and the plastic support frames are of hollow structures. The supporting frame 2 is welded on the front surface of the substrate 3.

The grounding arm welding hole is a long hole, the grounding arm is welded in the grounding arm welding hole and is used for connecting the metal array to the copper-clad layer on the back of the substrate, and the substrate is connected with a metal part of the equipment through the copper-clad layer and is in grounding connection with the metal array. The feed point is welded in the feed point welding hole to connect the metal array with the microstrip line in a feed mode. The ground arm includes first ground arm 110 and second ground arm 111, ground arm welded hole includes first ground arm welded hole 30 and second ground arm welded hole 31, first ground arm 110 welds in first ground arm welded hole 30, and second ground arm 111 welds in second ground arm welded hole 31. The three welding holes, namely the first grounding arm welding hole, the second grounding arm welding hole and the feed point welding hole, are designed on the substrate of the antenna, wherein the first grounding arm welding hole 30 and the second grounding arm welding hole 31 are respectively designed for welding two grounding arms of the antenna, and the other feed point welding hole is a feed point for welding an antenna array, so that a microstrip line on the substrate and the antenna array are connected into a whole.

The metal oscillator still includes first oscillator (oscillator) 10, second oscillator 11 and connects coupling portion 12 between first oscillator 10 and second oscillator 11, first oscillator 10 erects in one of them on the support frame 2, second oscillator 11 erects on another support frame 2, first oscillator 10 includes first high frequency oscillator 102 and low frequency oscillator 100, second oscillator 11 includes second high frequency oscillator 103 and medium frequency oscillator 101, coupling portion 12 is located between two support frames 2 and is close to on the base plate 3, just coupling portion 12 forms the strong coupling with base plate 3. The antenna metal array is designed by adopting four parts which are distributed on two sides of the antenna, and the four parts have different lengths, widths and appearances and generate main resonance of the antenna. One of the arrays mainly generates resonance of a 1.8G frequency band, the other array generates a 2.6G frequency band, and the two arrays jointly generate a 3.6G frequency band. The resonance and bandwidth of the antenna are adjusted by adjusting the length, width, shape and mutual spacing of the elements. The antenna metal array is provided with two grounding arms which are distributed on two sides of the antenna and are respectively responsible for grounding of the two arrays on one side to form a structure similar to a PIFA antenna, and the width of the antenna metal array is adjusted to be matched with the arrays to jointly adjust the resonance point and the bandwidth. And this ground arm can also act as a support post for the entire antenna.

The first grounding arm 110, the second grounding arm 111 and the metal side wall 14 are respectively vertically connected with the substrate 3, the first grounding arm 110 and the second grounding arm 111 are respectively vertical and adjacent to the metal side wall 3, the first grounding arm 110 is close to one side of the substrate 3, and the second grounding arm 111 is close to the other side of the substrate 3.

The coupling part is in a convex plane structure, and the convex plane is parallel to the substrate. The feeding point 13 is connected to the protruding end of the coupling part, and the feeding point 13 is welded to the feeding point welding hole 32, so that the metal array is connected with the microstrip line 34 in a feeding manner. The antenna is designed with a convex coupling surface, the metal surface mainly has the function of forming strong coupling with the PCB, and the effect of widening the bandwidth of the antenna is realized by adjusting the height and the external dimension of the metal surface and the ground. One end of the convex coupling surface is a feed point of the metal antenna, and the feed point is connected with the microstrip line on the PCB in a welding mode.

The width of the first grounding arm 110 is greater than the width of the second grounding arm 111.

The support frame 2 is the tetragonal body shape, the outside of support frame 2 with the edge parallel and level of base plate 3, be provided with hot melt post (not shown in the figure) on the plastic support frame 2, the metal array passes through the hot melt mode welding of hot melt post on the support frame 2. The antenna is provided with two plastic support frames which are arranged below the arrays on the two sides of the antenna, and the height of the plastic support frames is just equal to the direct gap distance between the metal antenna array and the upper surface of the PCB. The two plastic supporting frames are designed to be in the same shape, so that the die opening of a plastic part die is reduced. Can design the hot melt post above the plastic support frame, through the mode of hot melt for antenna metal array combines together with the plastic support frame, thereby plays the effect of fixed stay.

The antenna is a low-profile multiband 5G antenna. The low-profile multi-band 5G broadband antenna realizes the characteristics of three frequency bands and low profile of the antenna through the design of a multi-array, a double grounding arm, a coupling surface and the like, thereby realizing the coverage of 1710-. Standing waves of the antenna in the frequency band range can be below 2.0, and the antenna design can realize that 60-degree out-of-roundness of a vertical plane is less than +/-3dB, so that the antenna can be installed in a micro-station device, and can be attracted and covered omnidirectionally.

The metal oscillator mainly comprises four parts, namely a low-frequency oscillator and a first high-frequency oscillator of a first array, a medium-frequency oscillator and a second high-frequency oscillator of a second array, and four metal oscillators with different lengths, widths and shapes of oscillators, wherein the four metal oscillators generate main resonance of an antenna, and two grounding arms play a role in grounding a PIFA antenna structure and a role in supporting a fixing arm of the antenna structure. The convex coupling surface is mainly used for carrying out strong coupling with the ground, so that the bandwidth is improved. The metal feed point is the antenna signal feed from the metal structure, and there is also a metal sidewall, which optimizes the bandwidth. The metal antenna oscillator adopts a multi-bending design, continuous die production and one-die forming.

According to the utility model, copper is coated on the back of the PCB, so that the antenna can be well contacted with a metal ground of equipment when being installed and used. Two grounding arm welding holes are two grounding arms of the fixed metal array, a feeding point welding hole on the PCB is a welding metal oscillator feeding point, and a coaxial line core wire and a grounding welding point are designed to be convenient for welding a coaxial line. The microstrip line is connected with a high-frequency signal, and the antenna is conveniently connected with equipment through the fixing hole 33.

It should be noted that the antenna of the present invention is not limited to be used in 5G networks.

The utility model has the following beneficial effects:

1. the antenna is novel in design, simple and stable in structural design, the metal array is fixed on the plastic support piece through hot melting, the fixed whole body is welded on three reserved metallized through holes in the PCB through a welding process, the antenna is fed coaxially, and the coaxial line is welded on a reserved welding position on the PCB. The antenna has simple integral design process and stable structure, and can ensure stable performance. The antenna is provided with two grounding arms which are respectively arranged at the left side and the right side of the antenna structure, wherein the two grounding arms are used as one part of the grounding of the PIFA antenna structure and one part of the fixed antenna structure, so that the antenna structure is stable after being welded.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example" or "some examples" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described in this specification can be combined and combined by one skilled in the art.

While embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and not to be construed as limiting the present invention, and that changes, modifications and variations may be made therein by those of ordinary skill in the art within the scope of the present invention.

Claims

1. The utility model provides a 5G antenna, its characterized in that, includes base plate (3), support frame (2) and metal array (1), support frame (2) set up in on base plate (3), metal array (1) connect in on support frame (2), metal array (1) have ground arm and feed point (13), metal array (1) respectively through ground arm and feed point (13) connect in on the base plate.

2. The 5G antenna according to claim 1, wherein the substrate is a glass fiber epoxy copper clad laminate, the back surface of the substrate is a copper clad laminate (37), the front surface of the substrate is provided with a microstrip line (34), a coaxial line core wire welding point (35) and a coaxial line grounding welding point (36), the substrate is further provided with a grounding arm welding hole and a feeding point welding hole (32), the feeding point welding hole (32) is located at one end of the microstrip line (34), the coaxial line core wire welding point (35) is located at the other end of the microstrip line (34), and the coaxial line grounding welding point (36) is close to the coaxial line core wire welding point (35) and located at one side edge of the substrate.

3. The 5G antenna according to claim 2, wherein the number of the support frames (2) is two, the two support frames are symmetrically located at two opposite sides of the substrate, the support frames are plastic support frames, the support frames are welded on the front surface of the substrate,

the grounding arm welding hole is a long hole, the grounding arm is welded to the grounding arm welding hole to connect the metal oscillator (1) in a grounding mode, and the feeding point (13) is welded to the feeding point welding hole (32) to connect the metal oscillator (1) and the microstrip line (34) in a feeding mode.

4. The 5G antenna of claim 3,

the grounding arm comprises a first grounding arm (110) and a second grounding arm (111), the grounding arm welding holes comprise a first grounding arm welding hole (30) and a second grounding arm welding hole (31), the first grounding arm is welded in the first grounding arm welding hole, the second grounding arm is welded in the second grounding arm welding hole,

the metal oscillator still includes first array (10), second array (11) and connects coupling portion (12) between first array and second array, first array erects one of them on the support frame, the second array erects on another support frame, first array includes first high frequency array (102) and low frequency array (100), the second array includes second high frequency array (103) and medium frequency array (101), coupling portion (12) are located between two support frames and are close to the base plate coupling portion forms strong coupling with the base plate.

5. The 5G antenna according to claim 4, wherein the first grounding arm (110), the second grounding arm (111) and the metal side wall (14) are respectively connected with the substrate (3) vertically, the first grounding arm (110) and the second grounding arm (111) are respectively connected with the metal side wall (14) vertically and adjacently, the first grounding arm (110) is close to one side of the substrate, and the second grounding arm (111) is close to the other side of the substrate.

6. The 5G antenna according to claim 4, wherein the coupling part (12) is a convex plane structure, the feeding point (13) is connected to the convex end of the coupling part, and the feeding point (13) is welded to the feeding point welding hole (32) to connect the metal array with the microstrip line feeding.

7. The 5G antenna according to claim 4, characterized in that the width of the first ground arm (110) is larger than the width of the second ground arm (111).

8. A5G antenna as claimed in claim 4, characterised in that one of the first (10) and second (11) elements produces a resonance in the 1.8G band and the other element produces a 2.6G band, the first and second elements together producing a 3.6G band.

9. The 5G antenna according to claim 3, wherein the support frame (2) is square, the outer side of the support frame is flush with the edge of the substrate, the plastic support frame is provided with a hot-melting column, and the metal array is welded on the support frame through hot melting of the hot-melting column.

10. The 5G antenna of claim 1, wherein the antenna is a low profile multiband 5G antenna.