CN216980859U - Antenna with a shield - Google Patents
Antenna with a shield Download PDFInfo
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- CN216980859U CN216980859U CN202220723606.8U CN202220723606U CN216980859U CN 216980859 U CN216980859 U CN 216980859U CN 202220723606 U CN202220723606 U CN 202220723606U CN 216980859 U CN216980859 U CN 216980859U
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Abstract
The present disclosure relates to an antenna, which includes a first radiator and a second radiator, wherein the first radiator is used for being connected to a feed point, the second radiator is used for being connected to a ground point, the second radiator is hollow inside, the first radiator is disposed inside the second radiator and insulated from the second radiator, the second radiator is formed as a hollow structure with two open ends and all around closed, two open ends of the second radiator are opposite along the front-back direction, and two open ends of the second radiator can supply electromagnetic waves. The antenna can realize bidirectional radiation of signals and has the advantage of high gain.
Description
Technical Field
The present disclosure relates to the field of communications devices, and in particular, to an antenna.
Background
In the related art, an antenna can only directionally transmit/receive electromagnetic waves in one direction, and for some specific application scenarios, for example, an application scenario in which the antenna is installed in a vehicle (such as a cloud rail or a cloud-bus train), the antenna is required to have the characteristics of bidirectional radiation and high gain, whereas the existing directional antenna has the problems of single radiation direction and low gain, and cannot meet the condition.
SUMMERY OF THE UTILITY MODEL
An object of the present disclosure is to provide an antenna to solve technical problems in the related art.
In order to achieve the above object, the present disclosure provides an antenna including:
the first radiator is used for being connected with the feed point;
the second radiator is used for being connected with the grounding point, the interior of the second radiator is hollow, the first radiator is arranged in the second radiator and is mutually insulated from the second radiator, the second radiator is formed into a hollow structure with two open ends and four closed sides, and the two open ends of the second radiator are opposite to each other along the front-back direction and are used for allowing electromagnetic waves to pass through.
Optionally, a size of the first radiator in the front-back direction is smaller than a size of the second radiator in the front-back direction.
Optionally, the first radiator is formed as a rectangular plate-shaped structure, and a plane of the rectangular plate-shaped structure is parallel to the front-back direction.
Optionally, the second radiator includes a top plate and a bottom plate that are disposed oppositely along a vertical direction, and two side plates that are disposed oppositely along a horizontal direction, and the top plate, the bottom plate, and the two side plates jointly enclose the hollow structure with two open ends and a closed periphery.
Optionally, the roof plate, the bottom plate, and two the curb plate is in the size of fore-and-aft direction is the 2/5 ~ 1/2 wavelength of the frequency band of antenna, two the curb plate is in the size of upper and lower direction is the 1/4 ~ 3/10 wavelength of the frequency band of antenna, the roof plate with the size of bottom plate in the left and right direction is the 3/5 ~ 9/10 wavelength of the frequency band of antenna.
Optionally, the first radiator and the second radiator are both symmetrically disposed about a first center line extending in the front-rear direction; and/or the presence of a gas in the gas,
the first radiator and the second radiator are both symmetrical about a second center line extending in the left-right direction.
Optionally, the antenna further includes an insulating support, and the first radiator is mounted on the substrate through the insulating support.
Optionally, the insulating support includes two insulating clamping plates, and the two insulating clamping plates are mounted on the base plate and are used for clamping the first radiator together.
Optionally, the insulating support further includes two insulating spacers, two sides of the first radiator protrude outwards from the insulating clamping plate and form a protruding portion, the two insulating spacers are located on two sides of the insulating clamping plate, and each protruding portion and the bottom plate are clamped by the spacer.
Optionally, a through hole is formed in the bottom plate, the through hole is located between the two insulating partition plates and is used for a cable to pass through, a feeding area is arranged at a position, corresponding to the through hole, of the lower end surface of the first radiator, the feeding area is used for being connected with a cable core of the cable, a hole wall of the through hole is used for being connected with a conductive layer of the cable, the cable core of the cable is the feeding point, and the conductive layer of the cable is the grounding point.
Optionally, the electrical length of the first radiator is 1/4 wavelengths of the frequency band of the antenna.
Optionally, the antenna covers at least 1.785GHz-1.805GHz working frequency band.
In the above antenna, the first radiator is connected to the feeding point, the second radiator is connected to the grounding point, and the first radiator and the second radiator together form the antenna and can transmit or receive electromagnetic waves. Because the second radiator is formed into a hollow structure with two open ends and closed periphery, the first radiator is positioned in the second radiator, and the electromagnetic wave generated by the antenna can be transmitted to the outside through the two open ends. Because the second radiator forms a hollow structure with two open ends and closed periphery, the electromagnetic wave generated in the antenna can be transmitted to two different directions through the two open ends respectively, thereby realizing the bidirectional radiation of signals.
Additional features and advantages of the present disclosure will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:
fig. 1 is a perspective view of an antenna provided by an exemplary embodiment of the present disclosure;
fig. 2 is a front view of an antenna provided by an exemplary embodiment of the present disclosure;
FIG. 3 is a sectional view taken along line "A-A" in FIG. 2;
fig. 4 is a sectional view taken along the line "B-B" in fig. 2.
Description of the reference numerals
1-a first radiator; 11-a projection; 12-a feeding area; 2-a second radiator; 21-open end; 22-a top plate; 23-a base plate; 231-a through hole; 24-side plate; 3-an insulating support; 31-an insulating clamping plate; 32-an insulating spacer; 4-fixed pin.
Detailed Description
The following detailed description of the embodiments of the disclosure refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.
In the present disclosure, unless otherwise stated, the terms of orientation such as "upper, lower, front, rear, left, and right" are generally defined in the direction of the drawing plane of fig. 1, and specifically refer to fig. 1 to 4, "inner and outer" refer to the inner and outer of the profile of the relevant component. In addition, it should be noted that terms such as "first", "second", and the like are used for distinguishing one element from another, and have no order or importance. In addition, in the description with reference to the drawings, the same reference numerals in different drawings denote the same elements.
As shown in fig. 1 to 4, the present disclosure provides an antenna including a first radiator 1 and a second radiator 2, wherein the first radiator 1 is configured to be connected to a feeding point, the second radiator 2 is configured to be connected to a ground point, the second radiator 2 is hollow inside, the first radiator 1 is disposed inside the second radiator 2 and insulated from the second radiator 2, the second radiator 2 is formed in a hollow structure with two open ends and a closed periphery, and two open ends 21 of the second radiator 2 are opposite to each other in a front-back direction and are used for passing electromagnetic waves.
In the above-described antenna, the first radiator 1 is connected to the feeding point, the second radiator 2 is connected to the grounding point, and the first radiator 1 and the second radiator 2 together constitute an antenna capable of transmitting or receiving electromagnetic waves. Because the second radiator 2 forms the hollow structure with two open ends and closed periphery, the first radiator 1 is positioned in the second radiator 2, the electromagnetic wave generated by the antenna can be transmitted to two different directions through the two open ends 21, thereby realizing the bidirectional radiation of the signal, and because the periphery of the second radiator 2 is closed, the electromagnetic wave can be reflected and guided to the transmission direction of the electromagnetic wave, the electromagnetic wave can be prevented from being dispersed due to the transmission around, thereby improving the gain of the antenna and ensuring the signal transmission effect.
Alternatively, the first radiator 1 and the second radiator 2 are made of a metal material, such as stainless steel, copper, silver, aluminum, and the like, and the material of the antenna is not particularly limited in this disclosure. The antenna can be used for signal transmission of electronic equipment and communication of vehicles, for example, the antenna can be mounted on a cloud rail or a train to transmit communication signals, and the application scene of the antenna is not particularly limited in the present disclosure.
In order to ensure that the periphery of the second radiator 2 can guide the electromagnetic wave well, the first radiator 1 may have a smaller dimension in the front-rear direction than the second radiator 2, that is, the dimension of the second radiator 2 in the front-rear direction is larger than the dimension of the first radiator 1 in the front-rear direction, as shown in fig. 1, 3 and 4, and the electromagnetic wave generated between the first radiator 1 and the second radiator 2 can be guided by the second radiator 2 to propagate to the outside through the open end 21, thereby ensuring the advantage of high gain of the antenna. In addition, the second radiator 2 can also protect the first radiator 1, and prevent dust or impurities from being attached to the first radiator 1 to cause the performance degradation or failure of the antenna.
The characteristics of the antenna are related to the electrical length of the first radiator 1, and optionally, the electrical length of the first radiator 1 may be 1/4 wavelengths of the frequency band of the antenna, so as to ensure that the antenna has high gain.
In order to ensure the strength of the electromagnetic wave generated by the antenna, the first radiator 1 may be formed as a plate structure, and the antenna formed by the first radiator 1 and the second radiator 2 together generates a strong electromagnetic wave signal due to the large surface area of the plate structure.
As an exemplary embodiment, as shown in fig. 3 and 4, the first radiator 1 may be formed in a rectangular plate-like structure, and a plane in which the rectangular plate-like structure is located may be parallel to the front-rear direction, i.e., a surface of the rectangular plate-like structure on which the area is the largest is parallel to the front-rear direction, in other words, a thickness direction of the rectangular plate-like structure is perpendicular to the front-rear direction. The rectangular plate-like structure here means that the surface of the first radiator 1 having the largest area is substantially rectangular, and the rectangular plate-like structure may have a chamfer formed thereon, which is not particularly limited by the present disclosure.
The second radiator 2 may be formed in a loop structure, a cubic structure, or the like, and the second radiator 2 may be formed in a cubic structure in order to facilitate the arrangement of the antenna. As an exemplary embodiment, as shown in fig. 1, the second radiator 2 may include a top plate 22 and a bottom plate 23 that are oppositely disposed along the up-down direction, and two side plates 24 that are oppositely disposed along the left-right direction, where the top plate 22, the bottom plate 23, and the two side plates 24 together enclose a hollow structure with two open ends and a closed periphery, and the hollow structure has a cubic shape, which can facilitate the arrangement of the antenna and avoid the installation and arrangement difficulties caused by the special-shaped shape of the antenna.
Since the first radiator 1 and the second radiator 2 jointly form an antenna, the characteristics of the antenna are also related to the size of the second radiator 2, and in order to ensure the advantage of high gain of the antenna, in the embodiment where the second radiator 2 includes the top plate 22, the bottom plate 23 and the two side plates 24, optionally, the size of the top plate 22, the bottom plate 23 and the two side plates 24 in the front-back direction may be 2/5-1/2 wavelengths of the frequency band of the antenna, the size of the two side plates 24 in the up-down direction may be 1/4-3/10 wavelengths of the frequency band of the antenna, and the size of the top plate 22 and the bottom plate 23 in the left-right direction may be 3/5-9/10 wavelengths of the frequency band of the antenna. In this embodiment, the antenna has not only the advantage of high gain, but also the characteristic of low profile, and the dimension of the second radiator 2 in the up-down direction is smaller than the dimension in the left-right direction or the front-back direction, so that the antenna has good aerodynamic performance, and when the antenna is mounted on a vehicle such as a cloud rail or a train, the air resistance received by the antenna is small, and the antenna can be prevented from being damaged.
The characteristics of the antenna are also related to the symmetry of the first radiator 1 and the second radiator 2 themselves, and in order to improve the gain of the antenna, the first radiator 1 and the second radiator 2 may be alternatively both symmetrically disposed about a first center line extending in the front-rear direction, and/or the first radiator 1 and the second radiator 2 may also be both symmetrically disposed about a second center line extending in the left-right direction. The first radiator 1 and the second radiator 2 both have good symmetry, so that signals of the antenna, which propagate electromagnetic waves to different directions through the two open ends 21 of the second radiator 2, are also symmetric, and the antenna has good bidirectional radiation characteristics.
In an embodiment where the second radiator 2 includes the top plate 22, the bottom plate 23 and the side plate 24, the first radiator 1 may be mounted on the bottom plate 23 of the second radiator 2, and in order to ensure that the first radiator 1 and the second radiator 2 are insulated from each other, optionally, as shown in fig. 1 and 2, the antenna may further include an insulating support 3, and the first radiator 1 may be mounted on the bottom plate 23 through the insulating support 3. The insulating support 3 is made of an insulating material, so that current on the first radiator 1 can be prevented from being transmitted to the second radiator 2 through the insulating support 3, the first radiator 1 can be stably connected to the second radiator 2, when the antenna is installed on vehicles such as a cloud rail or a cloud-bus train, relative movement of the first radiator 1 and the second radiator 2 caused by movement of the vehicles can be avoided, and stability of the antenna is ensured.
The insulating support 3 may have various structures, and in order to ensure the stability of the first radiator 1, as shown in fig. 3 and 4, the insulating support 3 may optionally include two insulating clamping plates 31, and the two insulating clamping plates 31 are mounted on the base plate 23 and are used to clamp the first radiator 1 together. The two insulating clamping plates 31 can respectively limit the movement and rotation of the first radiator 1, and prevent the first radiator 1 from shaking and moving relative to the second radiator 2.
In an embodiment of the bolt connection method, fixing holes may be formed in the two insulating clamping plates 31 and the first radiator 1, and the fixing pin 4 is inserted into the fixing hole, so as to stably clamp the first radiator 1 between the two insulating clamping plates 31.
In order to ensure that the first radiator 1 and the second radiator 2 are insulated from each other, as shown in fig. 3 and 4, the insulating support 3 may optionally further include two insulating spacers 32, two sides of the first radiator 1 protrude outwards from the insulating clamping plate 31 and form the protruding portion 11, the two insulating spacers 32 are located on two sides of the insulating clamping plate 31, and a spacer is clamped between each protruding portion 11 and the bottom plate 23. The partition can support the protruding portion 11 of the first radiator 1, so as to prevent the protruding portion 11 from contacting the bottom plate 23 when moving or deforming, thereby avoiding the antenna from failing, and thus ensuring the stability of the antenna.
In the embodiment that the first radiator 1 is installed on the bottom plate 23 of the second radiator 2, in order to facilitate the arrangement of the cable, as shown in fig. 4, a through hole 231 may be optionally formed on the bottom plate 23, the through hole 231 is located between two insulating partition plates 32 and is used for the cable to pass through, a feeding area 12 is disposed at a position where the lower end surface of the first radiator 1 corresponds to the through hole 231, the feeding area 12 is used for being connected with a core of the cable, a hole wall of the through hole 231 is used for being connected with a conductive layer of the cable, the core of the cable is a feeding point, and the conductive layer of the cable is a grounding point. The conducting layer surrounds the outside of the cable core, and the outside of the conducting layer is wrapped with an insulating layer. Because the through hole 231 is formed on the bottom plate 23, the cable is inserted into the through hole 231, and the cable core thereof can be connected with the feeding region 12 of the first radiator 1, and the conductive layer thereof is connected with the second radiator 2 through the hole wall of the through hole 231, thereby avoiding the cable from occupying the space inside the second radiator 2, preventing the cable from influencing the antenna signal, and facilitating the arrangement of the cable and the antenna.
Optionally, the antenna may cover at least an operating frequency band of 1.785GHz-1.805GHz, and the return loss of the antenna in this operating frequency band is small, so that the propagation effect of the antenna is good. When the antenna is used on vehicles such as a cloud rail or a Yunba train, the antenna covers the working frequency band, and the communication efficiency and effect of the antenna can be guaranteed.
The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.
It should be noted that, in the above embodiments, the various features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various possible combinations will not be further described in the present disclosure.
In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.
Claims (12)
1. An antenna, comprising:
the first radiator (1) is used for being connected with the feed point;
the second radiator (2) is used for being connected with a grounding point, the second radiator (2) is hollow, the first radiator (1) is arranged in the second radiator (2) and is mutually insulated from the second radiator (2), the second radiator (2) is of a hollow structure with two open ends and the periphery being closed, and the two open ends (21) of the second radiator (2) are opposite in the front-back direction and are used for allowing electromagnetic waves to pass through.
2. An antenna according to claim 1, characterized in that the dimension of the first radiator (1) in the front-rear direction is smaller than the dimension of the second radiator (2) in the front-rear direction.
3. An antenna according to claim 1, characterized in that the first radiator (1) is formed as a rectangular plate-like structure in a plane parallel to the front-to-rear direction.
4. The antenna according to any one of claims 1-3, wherein the second radiator (2) comprises a top plate (22) and a bottom plate (23) oppositely arranged along a vertical direction, and two side plates (24) oppositely arranged along a left-right direction, and the top plate (22), the bottom plate (23), and the two side plates (24) jointly enclose the hollow structure with two open ends and four closed sides.
5. The antenna of claim 4, wherein the dimensions of the top plate (22), the bottom plate (23), and the two side plates (24) in the front-back direction are 2/5-1/2 wavelengths of the frequency band of the antenna, the dimensions of the two side plates (24) in the up-down direction are 1/4-3/10 wavelengths of the frequency band of the antenna, and the dimensions of the top plate (22) and the bottom plate (23) in the left-right direction are 3/5-9/10 wavelengths of the frequency band of the antenna.
6. The antenna according to claim 4, characterized in that the first radiator (1) and the second radiator (2) are each arranged symmetrically with respect to a first center line extending in the front-rear direction; and/or the presence of a gas in the gas,
the first radiator (1) and the second radiator (2) are both symmetrical about a second center line extending in the left-right direction.
7. An antenna according to claim 4, characterized in that it further comprises an insulating support (3), the first radiator (1) being mounted on the chassis (23) by means of the insulating support (3).
8. An antenna according to claim 7, characterized in that the insulating support (3) comprises two insulating clamping plates (31), the two insulating clamping plates (31) being mounted on the base plate (23) and serving to clamp the first radiator (1) together.
9. The antenna according to claim 8, characterized in that the dielectric support (3) further comprises two dielectric spacers (32), two sides of the first radiator (1) protrude outwards from the dielectric clamping plate (31) and form a protrusion (11), two dielectric spacers (32) are located on two sides of the dielectric clamping plate (31), and each spacer is clamped between the protrusion (11) and the bottom plate (23).
10. An antenna according to claim 9, characterized in that a through hole (231) is formed in the bottom plate (23), the through hole (231) is located between the two insulating spacers (32) and is used for a cable to pass through, a feeding area (12) is arranged at a position of the lower end face of the first radiator (1) corresponding to the through hole (231), the feeding area (12) is used for connecting with a core of the cable, a hole wall of the through hole (231) is used for connecting with a conductive layer of the cable, the core of the cable is the feeding point, and the conductive layer of the cable is the grounding point.
11. An antenna according to any of claims 1-3, characterized in that the electrical length of the first radiator (1) is 1/4 wavelengths of the frequency band of the antenna.
12. An antenna according to any of claims 1-3, characterized in that it covers at least the 1.785GHz-1.805GHz operating band.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220723606.8U CN216980859U (en) | 2022-03-29 | 2022-03-29 | Antenna with a shield |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220723606.8U CN216980859U (en) | 2022-03-29 | 2022-03-29 | Antenna with a shield |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216980859U true CN216980859U (en) | 2022-07-15 |
Family
ID=82340286
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220723606.8U Active CN216980859U (en) | 2022-03-29 | 2022-03-29 | Antenna with a shield |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216980859U (en) |
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2022
- 2022-03-29 CN CN202220723606.8U patent/CN216980859U/en active Active
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