CN210692746U

CN210692746U - Base station antenna

Info

Publication number: CN210692746U
Application number: CN201921783693.0U
Authority: CN
Inventors: 朱向上; 王文芬
Original assignee: Foshan Kexinnuo Communication Co ltd
Current assignee: Foshan Kexinnuo Communication Co ltd
Priority date: 2019-08-09
Filing date: 2019-10-22
Publication date: 2020-06-05
Anticipated expiration: 2029-10-22

Abstract

The utility model discloses a base station antenna relates to base station antenna technical field, has solved in 100MHz-500MHz frequency channel, and base station antenna windage area is big, the reliability is low, problem with high costs. The technical scheme is that the device comprises a reflection rod, a radiation unit assembly, an adjusting rod and a feed network; the radiation unit assembly is arranged on the reflection rod, a plurality of adjusting rods used for adjusting the directivity of the antenna are arranged around the reflection rod through cross arms, and the radiation unit assembly comprises a fixed rod, a vibrator and a director. Through above design, under the prerequisite of realizing equal electric property, narrow antenna width by a wide margin, very big reduction the windage area, alleviateed product weight, promoted the reliability of product, reduced product cost simultaneously, promoted the economic nature of product.

Description

Base station antenna

Technical Field

The utility model relates to a base station antenna technical field, in particular to base station antenna.

Background

The traditional mobile communication frequency is distributed in the 800MHz-6GHz frequency band, the base station antenna generally adopts an array antenna, and mainly comprises a plurality of radiation units, a feed network, a reflecting plate, an outer cover and other parts, and the directivity of the antenna is mainly adjusted by the reflecting plate and accessories thereof in the design and production process. Due to the electromagnetic wave characteristics, the lower the frequency, the larger the size of the base station antenna. When the mobile communication frequency band is arranged at the frequency below 500MHz, the antenna designed according to the scheme brings a series of problems, such as heavy weight, large volume, large wind resistance, difficult transportation, high cost and the like.

For example, the frequency band of 230MHz is a frequency band allocated by the ministry of industry and trust to the private network of industries such as electric power, petroleum and the like, the wavelength λ of the frequency band is approximately equal to 1.3 m, the frequency band has a good diffraction effect, and the frequency band can be transmitted in a long distance in a complex terrain, so that the frequency band has incomparable advantages when used in the private network field. But at present, no directional base station antenna mainly designed for 230MHz private networks exists.

If the 230MHz frequency band adopts the base station antenna designed by the conventional plate antenna technology, the width is about 1 meter, and the length is 1 to 8 meters according to the different required gain requirements. At the moment, the antenna has a larger area, is easily impacted by larger air volume in the using process, and is easy to lose efficacy to reduce the reliability and even damage the antenna; because of its bulky, in order to guarantee basic structural strength, have to strengthen the design, lead to product heavy weight, with high costs to require to produce the interlinkage effect to its supporting installation facility, lead to can't use in the actual engineering economically.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a base station antenna, its gain, lamella width, front-to-back ratio electrical property are good, and the product width is about half of conventional design, has reduced the windage area effectively, has lightened weight, has promoted product reliability, has reduced the requirement to the installation facility; the assembled structure can be convenient for daily transportation, storage and installation, and then has good economic nature.

The above technical purpose of the present invention can be achieved by the following technical solutions: a base station antenna comprises a reflection rod, a radiation unit assembly, a feed network and an adjusting rod, wherein the radiation unit assembly comprises a fixed rod, a vibrator and a director; the oscillator and the director are sequentially arranged on the fixing rod along the axial direction of the fixing rod by taking the reflecting rod as a starting point; the radiation unit assembly is arranged on the circumferential side wall of the reflection rod and is installed on the reflection rod through a fixing rod.

By adopting the technical scheme, the radiation unit component can conveniently realize the signal radiation of the base station, and the structure of the technical scheme can be more simplified by combining the radiation unit component with the reflecting rod; the radiating unit consisting of the vibrator, the director and the fixed rod can have a larger gap, so that the area of the wind resistance can be effectively reduced, and the service life of the technical scheme is effectively prolonged; and secondly, the small surface area can facilitate daily transportation, storage and installation, so that the cable has good economy, and has the advantages of excellent electrical performance, reliable structure (extremely small wind resistance), relatively small packaging volume, light transportation and installation and the like in the frequency band of 100 plus 500 MHz.

The utility model discloses a further setting, the director is at least one along the axial equipartition and the quantity of dead lever, the director is along keeping away from the direction of oscillator is arranged.

By adopting the technical scheme, the director is a conductor, and the horizontal lobe width and the gain of the antenna can be adjusted by arranging the director.

The utility model discloses a further setting, the oscillator is with the interval of reflection pole, the interval and adjacent of director the interval of director is 0.1 ~ 0.5 lambda.

The utility model discloses a further setting, the length of oscillator is 0.4 ~ 0.6 lambda, the length of director is 0.35 ~ 0.55 lambda.

By adopting the technical scheme, the horizontal lobe width and the gain of the technical scheme in signal radiation can be realized by arranging the director.

The utility model discloses a further setting, the quantity of radiation unit subassembly is two at least and along the axial equipartition of reflection pole.

By adopting the technical scheme, the radiation unit assemblies with at least two numbers can be convenient for improving the range of signal radiation, and the technical scheme is set aiming at the 223-235MHz (230 MHz for short) frequency band, has good technical advantages and economic advantages and provides a reliable base station antenna for the networking of a power private network. When the number is two radiation unit subassemblies at least and can round the axial lateral wall setting of reflection pole, the axial of two adjacent dead levers can round the different angles of reflection pole orientation to in time adjust the signal radiation direction of radiation unit subassembly according to actual conditions, in order to satisfy different service environment demands. The directors in the radiation unit assemblies can freely form an array, the orientation of the radiation unit assemblies can freely change the array, so that antennas with different lobe widths can be realized, the pitch angle between the mounting rod and the reflecting rod can be adjusted, and the signal radiation requirements of various scenes can be realized.

The utility model discloses a further setting, the feeder network divides the ware including the merit that is used for the merit to divide network and external main equipment, the merit is divided the ware and is set up on the reflection pole, the radiating element subassembly passes through coaxial cable and divides the ware to be connected with the merit.

By adopting the technical scheme, the feeder line is a coaxial cable, the coaxial cable led out from the radiation unit component is connected with the power divider, and the power divider is provided with a cable for externally connecting main equipment.

The utility model discloses a further setting, including radially setting up in the regulation pole of reflection pole, setting up on the reflection pole and quantity be two at least second fixed plate, correspond the xarm that is equipped with on the second fixed plate respectively, it is adjacent be parallel to each other between the xarm.

Through adopting above-mentioned technical scheme, all be equipped with between the head end of adjacent xarm and between the tail end and adjust the pole, reflection pole and regulation pole are the conductor. The adjusting rods are radially arranged around the reflecting rod through the cross arm, and the front-to-back ratio of the antenna to the horizontal lobe width can be adjusted through the arrangement of the adjusting rods. The cross arm is a cross arm which can stretch out and draw back or can be segmented along the axial direction of the cross arm or can rotate around the central axis of the radiation rod, so that the distance between the adjusting rod and the reflection rod can be adjusted in time according to actual requirements.

The utility model discloses a further setting, including the code clamping subassembly that is used for adjusting the mounted position, the code clamping subassembly includes the installation pole that is used for the installation, and sets up first clamp code and the second clamp code on reflection pole; one end of the mounting rod is fixed in the first clamp code, and the other end of the mounting rod is fixed in the second clamp code.

The utility model discloses a further setting, the code clamping subassembly still includes the regulating arm that is used for adjusting installation pole inclination, the one end of regulating arm sets up on the reflection pole, the other end and the second code clamping fixed connection of regulating arm; the first clamp is rotatably connected to the side wall of the reflection rod.

Through adopting above-mentioned technical scheme, the regulating arm is the foldable regulating arm of V type, can make the installation pole use first press from both sides the sign indicating number as the centre of a circle point, the second presss from both sides the sign indicating number and rotates as the radius to realize adjusting the inclination between installation pole and the reflection pole two axial, and then be convenient for adjust the antenna gain of radiation unit subassembly and reflection pole.

To sum up, the utility model discloses following beneficial effect has:

1. at a lower frequency band (such as 100-500MHz), the electrical performance indexes such as excellent gain, lobe width, front-to-back ratio and the like can be realized;

2. on the basis of realizing the excellent electrical property, the wind resistance area can be greatly reduced, the product weight can be reduced, and the product reliability can be further improved;

3. the product has the advantages of convenient daily transportation, storage and installation, less material consumption, low cost and good economy;

4. the assembled structure is convenient for transportation and storage, and can be conveniently adapted to the antenna gain required by different occasions.

In general, the utility model has simple structure on the basis of realizing excellent electrical performance indexes, can effectively reduce the area of wind resistance and improve the reliability; through the design of serialization and then realize the antenna of different lobe widths, realize the signal radiation requirement of various scenes, the assembled structure can be convenient for daily transportation, storage and installation, and then has good economic nature.

Drawings

Fig. 1 is a schematic structural diagram of a base station antenna according to the present embodiment;

FIG. 2 is an enlarged view at A in FIG. 1;

FIG. 3 is an enlarged view at B in FIG. 1;

FIG. 4 is a schematic structural diagram of another perspective of the base station antenna according to the embodiment;

FIG. 5 is an enlarged view at C in FIG. 4;

fig. 6 is a directivity diagram of the present embodiment.

Reference numerals: 1. a reflection rod; 2. a first fixing plate; 3. a radiating element assembly; 31. fixing the rod; 32. a vibrator; 33. a director; 4. a feed network; 41. a power divider; 5. a second fixing plate; 6. a cross arm; 7. a connecting device; 8. a code clamping assembly; 81. mounting a rod; 82. a first clamp code; 83. a second clamp code; 9. an adjusting arm; 10. adjusting a rod; 11. polar coordinates; 13. a side lobe; 14. a main lobe; 15. a posterior valve.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Example (b): as shown in fig. 1 to 5, the base station antenna comprises a reflection rod 1, a radiation unit assembly 3 and an adjusting rod 10, wherein the radiation unit assembly 3 comprises a fixing rod 31, a vibrator 32 and a director 33; the vibrator 32 and the director 33 are sequentially arranged on the fixing rod 31 along the axial direction of the fixing rod 31 with the reflecting rod 1 as a starting point; the radiation unit component 3 is arranged on the circumferential side wall of the reflection rod 1, and the radiation unit component 3 is installed on the reflection rod 1 through the first fixing plate 2 or is directly welded on the reflection rod 1.

The radiation unit component 3 can facilitate the realization of base station signal radiation, and the structure of the technical scheme can be more simplified by combining the radiation unit component 3 with the reflection rod 1; the radiating unit composed of the vibrator 32, the director 33 and the fixing rod 31 can have a larger gap, so that on the basis of realizing the excellent electrical property, the wind resistance area can be greatly reduced, the product weight can be reduced, the product reliability can be further improved, and the service life of the technical scheme can be further effectively prolonged; secondly, the daily transportation, storage and installation are facilitated, the material consumption of the product is less, the cost is low, and the economic efficiency is good; the high-voltage power cable has the advantages of excellent electrical performance, reliable structure (extremely small wind resistance), relatively small packaging volume, light transportation and installation and the like in the frequency range of 100-500 MHz.

The directors 33 are uniformly distributed along the axial direction of the fixing rod 31 and are at least two in number, and the directors 33 are arranged in a direction away from the vibrator 32. The director 33 is a conductor, and the horizontal lobe width and gain of the antenna can be adjusted by the arrangement of the director 33, so that the electrical performance indexes such as excellent gain, lobe width, front-to-back ratio and the like can be realized in a lower frequency band (such as 100-500 MHz). If the radiation performance of the frequency band (100-500MHZ) is desired to be obtained, the overall width of the antenna is about 1 meter according to the conventional technology described in the background art, and by adopting the embodiment, the overall width of the antenna can be reduced to 0.5-0.6 meter, and the space area occupied by the antenna can be greatly reduced.

The distance between the vibrator 32 and the reflection rod 1, the distance between the vibrator 32 and the director 33, and the distance between adjacent directors 33 are all 0.1-0.5 lambda. The length of the vibrator 32 is 0.4 to 0.6 lambda, and the length of the director 33 is 0.35 to 0.55 lambda. The horizontal lobe width and the gain of the technical scheme in signal radiation can be realized by the arrangement of the director 33.

The number of the radiation unit assemblies 3 is four, and the radiation unit assemblies are uniformly distributed along the axial direction of the reflection rod 1, but not limited to four, adjacent radiation unit assemblies 3 are connected through a feed network 4, and the feed network 4 is arranged on the first fixing plate 2. The radiation unit elements 3, the number of which is at least two, can facilitate an increase in the range of signal radiation.

The feed network 4 comprises a power divider 41 for power dividing network and external main equipment, the power divider 41 is arranged on the reflection rod 1, and the radiation unit component 3 and the power divider 41 are connected with a feed line through a connector. The feeder line is a coaxial cable, the coaxial cable led out from the radiation unit component 3 is connected with the power divider 41, and the power divider 41 is provided with a cable for externally connecting a main device.

The base station antenna of the present embodiment further includes an adjusting rod 10 radially disposed on the reflecting rod 1, and three second fixing plates 5 disposed on the reflecting rod 1, wherein the second fixing plates 5 are respectively provided with cross arms 6, adjacent cross arms 6 are parallel to each other and connected through the adjusting rod 10, and the cross arms 6 are mounted on the reflecting rod 1 through the second fixing plates or directly welded on the reflecting rod 1. The adjacent cross arms 6 are parallel to each other and are installed through adjusting rods 10, and the reflecting rods 1 and the adjusting rods 10 are conductors. Any adjacent distance between the reflection rod 1 and the adjusting rod 10 and between adjacent adjusting rods 10 is 0.05-0.5 lambda; the adjusting rods 10 are radially arranged around the reflecting rod 1 through the cross arm 6, and the front-back ratio and the horizontal lobe width of the antenna can be adjusted through the arrangement of the positions and the number of the adjusting rods 10. The cross arm 6 can be a telescopic rod, or a rod with a sectional structure along the axial direction of the cross arm, or a rod capable of rotating around the central axis of the radiation rod, and the telescopic, sectional and rotating cross arms all adopt the common structure in the technical field, so that the distance between the adjusting rod 10 and the reflecting rod 1 can be adjusted in time according to actual needs.

When the total length of the base station antenna exceeds 3m or the number of the base station antenna includes more than two radiation unit assemblies 3, the reflection rods 1 can be divided into at least two sections, and the adjacent two sections of reflection rods 1 are connected through the connecting device 7. In this embodiment, the connecting device 7 may be a clamping plate commonly used in the art, but not limited thereto, and the two segments of the reflection rod 1 may be combined into a whole. The reflecting rod 1 is divided into at least two sections, which can be folded conveniently to shorten the total length for packaging and transportation. Similarly, the adjusting rod 10 is divided into at least two sections.

The base station antenna of the embodiment further comprises a code clamping assembly 8 for adjusting the installation position, wherein the code clamping assembly 8 comprises an installation rod 81 for installation, and a first code clamp 82 and a second code clamp 83 which are arranged on the reflection rod 1; the mounting rod 81 has one end fixed in the first clamp 82 and the other end fixed in the second clamp 83. The code clamping assembly 8 further comprises an adjusting arm 9 for adjusting the inclination angle of the mounting rod 81, one end of the adjusting arm 9 is arranged on the reflection rod 1, and the other end of the adjusting arm 9 is fixedly connected with the second code clamp 83; the first clamp 82 is rotatably coupled to a sidewall of the reflection rod 1.

The adjusting arm 9 is a V-shaped folding adjusting arm 9, so that the mounting rod 81 can rotate by taking the first clamp 82 as a central point and the second clamp 83 as a radius, and the inclination angle between the mounting rod 81 and the reflecting rod 1 in the axial direction can be adjusted, thereby facilitating adjustment of the antenna gain of the radiation unit assembly 3 and the reflecting rod 1. As shown in fig. 6, fig. 6 is a diagram of the present embodiment, and the diagram of fig. 6 can be obtained by a measuring instrument commonly used in the art.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

Claims

1. The base station antenna is characterized by comprising a reflection rod (1), a radiation unit assembly (3) and an adjusting rod (10), wherein the radiation unit assembly (3) comprises a fixed rod (31), a vibrator (32) and a director (33); the oscillator (32) and the director (33) are sequentially arranged on the fixing rod (31) along the axial direction of the fixing rod (31) by taking the reflecting rod (1) as a starting point; the radiation unit component (3) is arranged on the circumferential side wall of the reflection rod (1), and the radiation unit component (3) is installed on the reflection rod (1) through a fixing rod (31).

2. A base station antenna according to claim 1, characterized in that said directors (33) are uniformly distributed along the axial direction of the fixing rod (31) and are at least one in number.

3. The base station antenna according to claim 2, wherein the distance between the element (32) and the reflecting rod (1), the distance between the element and the director (33), and the distance between the adjacent directors (33) are 0.1-0.5 λ.

4. The base station antenna according to claim 1, wherein the length of the element (32) is 0.4-0.6 λ, and the length of the director (33) is 0.35-0.55 λ.

5. A base station antenna according to claim 1, characterized by comprising a feed network (4), wherein the number of said radiating element assemblies (3) is at least two and is uniformly distributed along the axial direction of the reflecting rod (1), and adjacent radiating element assemblies (3) are connected through the feed network (4).

6. A base station antenna according to claim 5, characterized in that the feeding network (4) comprises a power divider (41) for power dividing network and external main device, the power divider (41) is disposed on the reflection rod (1), and the radiation unit assembly (3) is connected to the power divider (41) through a coaxial cable.

7. The base station antenna according to claim 1, comprising an adjusting rod (10) radially arranged on the reflecting rod (1), and at least two second fixing plates (5) arranged on the reflecting rod (1), wherein the second fixing plates (5) are respectively provided with cross arms (6), and adjacent cross arms (6) are parallel to each other.

8. A base station antenna according to claim 1, characterized by comprising a code clamping assembly (8) for adjusting the mounting position, said code clamping assembly (8) comprising a mounting rod (81) for mounting, and a first code clamping (82) and a second code clamping (83) arranged on the reflecting rod (1); one end of the mounting rod (81) is fixed in the first clamping code (82), and the other end of the mounting rod is fixed in the second clamping code (83).

9. The base station antenna according to claim 8, wherein the code clamping assembly (8) further comprises an adjusting arm (9) for adjusting the inclination angle of the mounting rod (81), one end of the adjusting arm (9) is disposed on the reflection rod (1), and the other end of the adjusting arm (9) is fixedly connected with the second code clamping member (83); the first clamping bar (82) is rotatably connected to the side wall of the reflection rod (1).