CN210111044U

CN210111044U - Antenna and reflecting plate thereof

Info

Publication number: CN210111044U
Application number: CN201921039211.0U
Authority: CN
Inventors: 栗建豪; 费锦洲; 姜维维
Original assignee: Comba Telecom Technology Guangzhou Ltd
Current assignee: Comba Telecom Technology Guangzhou Ltd
Priority date: 2019-07-04
Filing date: 2019-07-04
Publication date: 2020-02-21
Anticipated expiration: 2029-07-04

Abstract

The utility model provides an antenna and reflecting plate thereof, wherein, the reflecting plate includes that bottom plate, two branches are located the curb plate of bottom plate lengthwise direction both sides to and vertically locate at least one baffle on the bottom plate along the bottom plate, the baffle includes the baffle main part, the baffle main part includes that two have the interval and all vertically set up and along the lateral part of keeping away from the direction extension of bottom plate along the bottom plate, and locate the horizontal portion of two lateral part upper ends, the height of the relative bottom plate of horizontal portion all is relevant with the wave width that is equipped with the antenna of this reflecting plate along the horizontal length of bottom plate. The utility model provides an among the reflecting plate, can effectively reduce boundary effect and coupling strength between the antenna array through the baffle main part, avoid the production of wave width distortion, and through the height of the relative bottom plate of horizontal portion in the adjustment baffle main part and along the horizontal length of bottom plate, can correspond the wave width of the antenna that the adjustment was equipped with this reflecting plate, improve antenna network's continuity, reliability and stability.

Description

Antenna and reflecting plate thereof

Technical Field

The utility model relates to a mobile communication technology field especially relates to a reflecting plate and adoption the antenna of reflecting plate.

Background

With the development of high-speed rail technology, the higher and higher speed of high-speed rails has higher and higher requirements on the coverage quality of communication networks along the high-speed rails. At present, when antenna base stations are arranged along a high-speed rail, due to the influence of complex environments such as long and narrow track areas and dense distribution of reflective metal, and the high-speed rail is too high in operation speed, the switching frequency is increased, the call drop rate is increased, and therefore user experience is poor.

SUMMERY OF THE UTILITY MODEL

The first object of the present invention is to provide a reflection plate capable of effectively improving antenna gain.

Another object of the present invention is to provide an antenna using the above reflection plate.

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

as a first aspect, the present invention relates to a reflector plate, locate including bottom plate, two branches the curb plate of bottom plate lengthwise direction both sides, and follow the bottom plate vertically locates at least one baffle on the bottom plate, baffle and curb plate are in inject two at least mounting grooves that are used for setting up the antenna array jointly on the bottom plate, the baffle includes the baffle main part, the baffle main part includes that two have the interval and all follow the bottom plate vertically sets up and along keeping away from the lateral part of the direction extension of bottom plate, and locate two the horizontal portion of lateral part upper end, horizontal portion is relative the height of bottom plate and edge the horizontal length of bottom plate all is relevant with the wave width that is equipped with the antenna of reflector plate.

Preferably, the baffle main part includes two risers and with two riser integrated into one piece's first diaphragm, two the riser interval sets up and follows the vertical erections of bottom plate in on the bottom plate, the both ends of first diaphragm respectively with two the upper end of riser is connected, two the lateral part is respectively by two the riser constitutes, horizontal part by first diaphragm constitutes.

Furthermore, the baffle main part still includes both ends respectively with two the second diaphragm that the lower extreme of riser is connected.

Preferably, the partition further comprises a first connecting plate connected to the lower end of the partition body and extending along the plane of the bottom plate, and the partition body is connected to the bottom plate through the first connecting plate.

As a second aspect, the present invention further relates to an antenna, including the above-mentioned reflector plate and locating a plurality of antenna arrays on the reflector plate, every the antenna array includes a plurality of edges the reflector plate longitudinal arrangement in the radiating element in the mounting groove, adjacent two are listed as and are equipped with between the antenna array the baffle.

Preferably, the antenna further comprises an insulating base for mounting the radiation unit, and the middle of the mounting groove at the two transverse ends of the reflecting plate is provided with at least one insulating base.

Preferably, the antenna array located in the mounting grooves at the two transverse ends of the reflector plate comprises a first radiation unit and a second radiation unit, the first radiation unit is directly fixed on the bottom plate, the second radiation unit is fixed with the bottom plate through the insulating seat, and the number of the first radiation units is 1-2 times that of the second radiation units.

Preferably, the antenna further includes at least one parasitic element tuning piece, the parasitic element tuning piece is disposed on the reflection plate and located below the radiation arm of the radiation element, and a height of the parasitic element tuning piece relative to the bottom plate is one-eighth to one-quarter of a wavelength of a minimum frequency in the antenna operating frequency band.

Preferably, the parasitic element test adjusting piece is of an L-shaped structure and comprises a test adjusting plate erected on the base plate and a second connecting plate connected with the lower end of the test adjusting plate and fixedly connected with the base plate.

Preferably, two parasitic element tuning pieces which are symmetrical relative to the radiation element are arranged below the radiation arm of the single radiation element.

Preferably, the plurality of antenna arrays are symmetrical about a line connecting midpoints of the base plates in the lateral direction.

Preferably, the antenna further comprises at least one isolation strip which is erected on the bottom plate along the transverse direction of the bottom plate and is positioned between two adjacent radiation units.

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

1. the utility model provides an among the reflecting plate, through the baffle main part can effectively reduce boundary effect and coupling strength between the antenna array, avoids the production of wave width distortion. Secondly, by adjusting the height of the transverse part in the clapboard main body relative to the bottom plate and the length along the transverse direction of the bottom plate, the wave width of the antenna provided with the reflecting plate can be correspondingly adjusted, for example, the horizontal wave width of the antenna is adjusted to be the medium wave width of 55 degrees, and when the clapboard main body is applied to network coverage along a high-speed rail, the clapboard main body has higher gain and radiation efficiency, and improves the continuity, reliability and stability of the network.

2. The utility model provides an among the antenna, the intermediate position of the antenna array that is located the horizontal both ends of reflecting plate have some radiating element pass through insulating seat with the reflecting plate is connected, and is relative promptly the radiating element of insulating a certain amount of reflecting plate can effectively be adjusted the wave width of antenna suppresses the production of resonance, improves horizontal plane beam width's convergence.

3. The utility model provides an among the antenna, partial radiating element's radiation arm below is equipped with parasitic unit and transfers the test piece, transfers the test piece through the parasitic unit that sets up predetermined quantity and can effectively adjust holistic isolation of antenna, wave width and cross polarization ratio index.

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 antenna according to an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of the antenna shown in FIG. 1 along a transverse direction thereof;

fig. 3 is a front view of an antenna according to another embodiment of the present invention;

fig. 4 is a schematic view of an installation structure of the radiating element, the insulating base, and the parasitic element test piece in the antenna shown in fig. 3.

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.

It will be understood by those within the art that, unless expressly stated otherwise, the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. As used herein, the term "and/or" includes all or any element and all combinations of one or more of the associated listed items.

Fig. 1 to fig. 4 collectively show the antenna 1000 and the reflection plate 1 thereof provided by the embodiment of the present invention, wherein the reflection plate 1 can effectively reduce the boundary effect and the coupling strength between the antenna arrays, avoid the generation of the wave width distortion, and make the antenna 1000 realize the miniaturization of the same gain magnitude antenna volume.

As shown in fig. 1, the antenna 1000 includes a reflection plate 1 and three antenna arrays 2 disposed on the reflection plate 1, the reflection plate 1 is provided with three side-by-side installation slots 111 along a longitudinal direction thereof, and the three antenna arrays 2 are disposed in the three installation slots 111 in a one-to-one correspondence manner. In addition, for convenience of description of a subsequent structure, of the three antenna arrays 2, two antenna arrays 2 located at the left and right ends in the transverse direction of the reflector 1 are defined as a first antenna array 21, and an antenna array 2 located at the middle in the transverse direction of the reflector 1 is defined as a second antenna array 22.

Referring to fig. 2, the reflective plate 1 includes a bottom plate 11 and two side plates 12 respectively disposed on two sides of the bottom plate 11 in the longitudinal direction, and the two side plates 12 are formed by bending the bottom plate 11, that is, the two side plates 12 and the bottom plate 11 are integrally formed, so as to improve the structural strength of the reflective plate 1.

The reflecting plate 1 further comprises two partition plates 13 longitudinally arranged on the bottom plate 11 along the bottom plate 11, and the three mounting grooves 111 are defined on the bottom plate 11 by the two partition plates 13 and the two side plates 12. Specifically, the partition plate 13 includes a partition plate main body 131 which can form a hollow rectangular parallelepiped structure with the bottom plate 11 and has an "n" shaped cross section, and two first connecting plates 132 which are respectively connected to the lower ends of the left and right sides of the partition plate main body 131 and extend along the plane of the bottom plate 11, that is, the partition plate 13 forms a structure with a "u" shaped cross section through the partition plate main body 131 and the two first connecting plates 132, and the partition plate main body 131 is connected to the bottom plate 11 through the first connecting plates 132. The partition 13 can effectively reduce the boundary effect and the coupling strength between the antenna arrays 2, and avoid the generation of the wave width distortion.

It should be noted that the wave width of the antenna 1000 can be adjusted by adjusting the width of the partition main body 131 along the transverse direction of the bottom plate 11, adjusting the height of the partition main body 131 relative to the highest point of the bottom plate 11, and adjusting the height of the side plate 12 relative to the highest point of the bottom plate 11. Specifically, the larger the width or height, the wider the wave width of the antenna 1000. When the antenna 1000 is used for network coverage along a high-speed rail, a person skilled in the art can adjust the horizontal plane wave width of the antenna 1000 to be a medium wave width of 55 ° by adjusting the structure of the reflector, which is more continuous, reliable and stable in network coverage than the existing high-speed rail antenna with a narrow wave width of 32 °; compared with a traditional base station antenna with wide beam width of 65 degrees, the radiation boundary of the antenna 1000 has higher gain and radiation efficiency, and the radiation performance and the electrical performance indexes are better.

The main partition board 131 includes two side portions (not numbered, the same below) having a distance and both disposed longitudinally along the bottom board 11 and extending in a direction away from the bottom board 11, and a transverse portion (not numbered, the same below) disposed at an upper end of the two side portions, a width of the main partition board 131 in a transverse direction of the bottom board 11 is equivalent to a length of the transverse portion in the transverse direction of the bottom board 11, and a height of the main partition board 131 relative to a highest point of the bottom board 11 is equivalent to a height of the transverse portion relative to the bottom board 11.

Specifically, the partition body 131 includes two vertical plates 1311 and a first horizontal plate 1312 covering the two vertical plates 1311, the two vertical plates 1311 are disposed at an interval and erected on the bottom plate 11 in the longitudinal direction of the bottom plate 11, both ends of the first horizontal plate 1312 are connected to upper ends of the two vertical plates 1311, the two lateral portions are formed by the two vertical plates 1311, and the lateral portion is formed by the first horizontal plate 1312.

Preferably, the partition plate 13 is integrally formed, that is, the two vertical plates 1311, the first horizontal plate 1312 and the two first connecting plates 132 are formed by bending a plate, so that the partition plate 13 can be conveniently processed and assembled, and the structural strength is high.

Further, the partition board main body 131 may further include a second horizontal plate (not shown, the same applies below) having two ends respectively connected to the lower ends of the two vertical plates 1311, and the partition board main body 131 forms a rectangular parallelepiped structure through the first horizontal plate 1312, the second horizontal plate and the two vertical plates 1311, so that the partition board main body 131 has higher stability and structural strength.

In other embodiments, the partition body 131 may also be a solid rectangular parallelepiped structure, which also has two lateral portions and a transverse portion, the wave width of the antenna 1000 can be adjusted by adjusting the height of the transverse portion relative to the bottom plate 11 and the length of the transverse portion along the bottom plate 11, and the structural strength of the partition 131 is higher, but the weight of the antenna 1000 is slightly increased, and the manufacturing cost of the antenna 1000 is increased.

In another embodiment shown in fig. 3, the first connecting plate 132 may be connected to the bottom plate 11 in a specific manner: the first connecting plate 132 is riveted to the base plate 11 by a rivet 5. Correspondingly, the first connecting plate 132 may be formed by combining a plurality of ear plates with riveting holes, and a whole connecting plate member does not need to be longitudinally arranged along the bottom plate 11, so as to save materials and reduce the weight of the antenna 1000. Secondly, the rivet 5 is made of a plastic material to prevent the connection structure from affecting the radiation performance of the antenna 1000.

Preferably, the antenna 1000 is symmetrical left and right along the center line position in the longitudinal direction thereof, that is, the three antenna arrays 2 are symmetrical about the connecting line of the midpoints of the bottom plate 11 in the transverse direction thereof, so as to ensure that the antenna 1000 has a good standing wave ratio.

In fig. 1, the antenna 1000 further includes a plurality of insulating blocks 3 disposed at intermediate positions of the first antenna array 21, and the insulating blocks 3 are made of an insulating material to insulate a number of radiation units 20 from the reflection plate 1.

Specifically, the first antenna array 21 includes a first radiation unit 201 and a second radiation unit 202, the first radiation unit 201 is directly disposed on the bottom plate 11, the second radiation unit 202 is disposed on the bottom plate 11 through the insulating base 3, and the number of the first radiation unit 201 is 1-2 times that of the second radiation unit 202. That is, in the first antenna array 21, the number of the second radiation elements 202 provided with the insulating base 3 is between one half and one third of the total number of the radiation elements 20. In the present embodiment, the first antenna array 21 includes seven radiation units 20, wherein the three radiation units 20 in the middle are the second radiation units 202, and the radiation units 20 in a certain number are insulated, so that the wave width of the antenna 1000 can be effectively adjusted, the generation of resonance is suppressed, and the convergence of the horizontal plane beam width is improved.

In addition, each radiation unit 20 in the second antenna array 22 located in the middle of the reflector 1 is not insulated from the reflector 11, so as to ensure that the horizontal wave width of the antenna 1000 is not distorted, and the overall gain value of the antenna 1000 can be effectively improved.

Referring to fig. 1, preferably, the antenna 1000 further includes a plurality of parasitic element tuning pieces 4, the parasitic element tuning pieces 4 are disposed on the reflection plate 1 and located below the radiation arms of the radiation elements 20, and a height of the parasitic element tuning pieces 4 relative to the bottom plate 11 is one eighth to one quarter of a wavelength of a minimum frequency in an operating frequency band of the antenna 1000. The plurality of parasitic element test adjusting pieces 4 can be arranged on the periphery of any one or more radiation units 20, the specific number of the parasitic element test adjusting pieces 4 can be adjusted according to actual requirements, the overall isolation, wave width and cross polarization ratio indexes of the antenna 1000 can be effectively controlled by setting the predetermined number of the parasitic element test adjusting pieces 4, and when the frequency band of the antenna 1000 is wide or the isolation is low, the number of the parasitic element test adjusting pieces 4 corresponding to the middle frequency point can be properly increased.

Referring to fig. 3, in another embodiment, the antenna array 2 may include more radiation units 20, and the radiation units 20 in two adjacent antenna arrays 2 are disposed in a staggered manner along the longitudinal direction of the antenna 1000, so as to increase the spacing between the radiation units 20 in the adjacent antenna arrays 2 in the limited space of the reflector 1, and reduce the coupling effect between the radiation units 20, thereby facilitating to reduce the size of the reflector 1, and further facilitating to achieve miniaturization of the antenna 1000.

As shown in fig. 3, the antenna 1000 further includes a plurality of isolation bars 6 respectively disposed between two adjacent radiation units 20, the isolation bars 6 are erected on the bottom plate 11 through the mounting frame 7, and mutual coupling between the radiation units 20 in the operating frequency band of the antenna 1000 can be reduced through the isolation bars 6, so as to improve isolation between the adjacent radiation units 20. In addition, the specific number of the spacers 6 can be adjusted according to the parameter requirements of the antenna 1000, and the spacers 6 do not need to be arranged between every two radiation units 20.

As shown in fig. 4, the parasitic element test adjusting piece 4 is an L-shaped structure, and includes a test adjusting plate 41 standing on the bottom plate 11 and a second connecting plate 42 connected to a lower end of the test adjusting plate 41 and extending along a plane where the bottom plate 11 is located, the test adjusting plate 41 is connected to the bottom plate 11 through the second connecting plate 42, and a height of the test adjusting plate 41 relative to the bottom plate 11 is one eighth to one quarter of a wavelength of a minimum frequency in an operating frequency band of the antenna 1000.

Corresponding to the periphery of the radiation unit 20, 1-4 parasitic element adjusting pieces 4 can be arranged below the radiation arm of a single radiation unit 20. Preferably, two parasitic element tuning pieces 4 symmetrical to the radiating element 20 are arranged below the radiating arm of a single radiating element 20, so that the isolation and the wave width between the radiating elements 20 can be well controlled.

As shown in fig. 4, the insulating base 3 and the parasitic element tuning piece 4 are preferably connected to the base plate 11 by rivets 5 made of a plastic material, and the connection structure is simple and has high connection strength without affecting the performance of the antenna 1000. In other embodiments, the partition plate 13, the insulating base 3 and the parasitic element tuning piece 4 may be fixed to the base plate 11 by other means, such as by fasteners, such as connecting pins and screws, and the fasteners are made of insulating material.

It should be understood that, in the present embodiment, three antenna arrays 2 are taken as an example to illustrate the structure of the antenna 1000, but the structure of the antenna 1000 cannot be considered as a limitation, in other embodiments, a person skilled in the art may adjust the number of the antenna arrays 2 and the number of the radiating elements 20 in each antenna array 2 according to conditions such as an actual use scenario of the actual antenna 1000, and the number of the spacers 13, the insulating bases 3, and the number of the parasitic element adjusting pieces 4 are all set according to a specific structure of the antenna 1000. However, due to the limitation of the size of the antenna and the requirement on performance indexes, and the problem of excessive wind load acting on a tower frame for installing the antenna is solved, preferably, 2-6 antenna arrays 2 are arranged in one antenna 1000, and the partition plate 13, the parasitic element adjusting piece 4 and a certain number of radiation units 20 insulated from the reflecting plate 1 are arranged, so that the generation of resonance can be effectively inhibited, the beam convergence is improved, the mutual coupling influence among the antenna arrays 2 is greatly reduced, and the miniaturization of the volume in the same gain level antenna is realized.

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 a reflecting plate, includes that bottom plate, two divide and locate the curb plate of bottom plate lengthwise direction both sides, and follow the bottom plate vertically locates at least one baffle on the bottom plate, baffle and curb plate are in inject two at least mounting grooves that are used for setting up the antenna array jointly on the bottom plate, a serial communication port, the baffle includes the baffle main part, the baffle main part includes two and has the interval and all follows the bottom plate vertically sets up and follows keep away from the lateral part of the direction extension of bottom plate, and locate two the horizontal portion of lateral part upper end, the horizontal portion is relative the height of bottom plate and following the horizontal length of bottom plate all is relevant with the wave width that is equipped with the antenna of reflecting plate.

2. The reflection plate as claimed in claim 1, wherein the partition body comprises two vertical plates and a first horizontal plate integrally formed with the two vertical plates, the two vertical plates are spaced apart from each other and vertically stand on the bottom plate, two ends of the first horizontal plate are respectively connected to upper ends of the two vertical plates, two lateral portions are respectively formed by the two vertical plates, and the transverse portion is formed by the first horizontal plate.

3. The reflection plate as claimed in claim 2, wherein the partition body further includes a second cross plate having both ends connected to lower ends of the two vertical plates, respectively.

4. The baffle plate as claimed in claim 1, wherein the baffle plate further comprises a first connecting plate connected to a lower end of the baffle main body and extending along a plane in which the bottom plate is located, the baffle main body being connected to the bottom plate through the first connecting plate.

5. An antenna, comprising a reflector plate and a plurality of antenna arrays disposed on the reflector plate, wherein the reflector plate is the reflector plate of any one of claims 1 to 4, each of the antenna arrays includes a plurality of radiating elements longitudinally arranged in the mounting groove along the reflector plate, and the partition is disposed between two adjacent rows of antenna arrays.

6. The antenna of claim 5, further comprising an insulating base for mounting the radiation unit, wherein the reflection plate is provided with at least one insulating base along a middle portion of the mounting groove at both lateral ends thereof.

7. The antenna according to claim 6, wherein the antenna array in the mounting grooves at the two lateral ends of the reflector plate comprises a first radiation unit and a second radiation unit, the first radiation unit is directly fixed on the bottom plate, the second radiation unit is fixed with the bottom plate through the insulating base, and the number of the first radiation units is 1-2 times that of the second radiation units.

8. The antenna of claim 5, further comprising at least one parasitic element tuning element disposed on the reflector plate and located below the radiating arm of the radiating element, wherein the height of the parasitic element tuning element relative to the bottom plate is one-eighth to one-quarter of the wavelength of the minimum frequency in the operating band of the antenna.

9. The antenna of claim 8, wherein the parasitic element tuning piece is an L-shaped structure, and comprises a tuning plate standing on the bottom plate and a second connecting plate connected to a lower end of the tuning plate and fixedly connected to the bottom plate.

10. An antenna according to claim 8 or 9, wherein two said parasitic element tuning elements are provided symmetrically with respect to the radiating element below the radiating arm of a single radiating element.

11. The antenna of claim 5, wherein the plurality of antenna arrays are symmetrical about a line connecting midpoints of the base plates in the lateral direction.

12. The antenna of claim 5, further comprising at least one spacer mounted on the bottom plate in a direction transverse to the bottom plate and between two adjacent radiating elements.