CN212908110U - High-density venue antenna - Google Patents
High-density venue antenna Download PDFInfo
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- CN212908110U CN212908110U CN202021590610.9U CN202021590610U CN212908110U CN 212908110 U CN212908110 U CN 212908110U CN 202021590610 U CN202021590610 U CN 202021590610U CN 212908110 U CN212908110 U CN 212908110U
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Abstract
The utility model discloses a high-density venue antenna, which comprises a transmitting plate, wherein a first antenna array, a second antenna array and a third antenna array are arranged on a reflecting plate, the first antenna array supports a first frequency band, and the first antenna array comprises 4 first antenna units which are distributed on the circumference at 45 degrees, 135 degrees, 225 degrees and 315 degrees; the second antenna array supports a second frequency band, the second antenna array is positioned in the middle of the first antenna array, the center of the second antenna array is superposed with the center of the first antenna array, and the second antenna array comprises 4 second antenna units which are distributed on the circumference in 0 degree, 90 degrees, 180 degrees and 270 degrees; the third antenna array supports a third frequency band, the third antenna array comprises 4 groups of third antenna units, each group of third antenna units comprises two third antenna units symmetrically arranged on two sides of the first antenna unit, and the third antenna units are perpendicular to the axial direction of the radiation arm of the first antenna unit.
Description
Technical Field
The utility model relates to a mobile communication system technical field especially relates to a high-density venue antenna in multifrequency section multisystem antenna.
Background
In recent years, with the popularization of 3G communication technology and the rise of 4G communication, the existing spectrum resources are increasingly strained. Antennas seeking wide spectrum and efficient spectral utilization have been pressing. The ultra-wideband technology has the advantages of high transmission rate, large capacity, low cost, low power consumption, good confidentiality, strong anti-interference capability and the like, so that the ultra-wideband technology becomes one of the technologies with the most competitive and development prospects. The wireless communication transmission system can provide high-speed text, sound, picture and even video quick transmission service, can meet higher communication requirements brought forward by an under-eye wireless intelligent product, and becomes a booming wireless communication transmission technology at present.
In the aspect of base station communication, the multi-polarization antenna can not only radiate or receive a plurality of pairs of electromagnetic waves with specific polarization directions, but also realize the simultaneous work of receiving and transmitting. In the current mobile communication network, the 4G antenna is used as the main network support, and the 5G antenna is used as the hot spot coverage, which will put higher requirements on the antenna. In the multi-antenna technology, it is a key point for designing this type of antenna to arrange and combine multi-band antennas in a limited antenna structure size without reducing required indexes, effectively reduce mutual coupling between frequency bands, improve convergence of radiation parameter frequency points, and isolation and suppression between frequency bands.
Therefore, there is an urgent need to develop a high-density stadium antenna which can realize a multiband antenna layout and design in a limited antenna structure size and has excellent isolation and suppression between frequency bands.
Disclosure of Invention
The utility model aims to solve the technical problem that a can realize among limited antenna structure size that isolation between multifrequency section antenna overall arrangement and design, the frequency channel suppresses excellent performance's high-density venue antenna endows antenna is provided.
In order to solve the technical problem, the utility model discloses a as follows technical scheme:
a high-density stadium endowing antenna comprises a reflecting plate, wherein a first antenna array, a second antenna array and a third antenna array are arranged on the reflecting plate, the first antenna array supports a first frequency band, and the first antenna array comprises 4 first antenna units which are distributed on the circumference in 45 degrees, 135 degrees, 225 degrees and 315 degrees in sequence; the second antenna array supports a second frequency band, the second antenna array is located in the middle of the first antenna array, the center of the second antenna array is overlapped with the center of the first antenna array, and the second antenna array comprises 4 second antenna units which are sequentially distributed at 0 degree, 90 degrees, 180 degrees and 270 degrees on the circumference; the third antenna array supports a third frequency band, the third antenna array comprises 4 groups of third antenna units, each group of third antenna units comprises two third antenna units symmetrically arranged on two sides of the first antenna unit, and the third antenna units are perpendicular to the axial direction of the radiation arm of the first antenna unit.
Preferably, the first antenna unit adopts a single-polarized half-wave dipole unit, the second antenna unit adopts a cross dual-polarized unit, and the third antenna unit adopts a slot antenna unit.
Preferably, the first antenna array comprises +45 ° polarized ports and-45 ° polarized ports, and the +45 ° polarized ports of the first antenna array are connected with two first antenna units distributed at 45 ° and 225 ° on the circumference; the-45 ° polarized ports of the first antenna array are connected with two first antenna units distributed at 135 ° and 315 ° on the circumference.
Preferably, the distance between two first antenna units opposite to each other in the first antenna array is λ, where λ is a wavelength of a center frequency point of the first frequency band.
Preferably, the second antenna array comprises a +45 ° polarized port and a-45 ° polarized port, and the +45 ° polarized port of the second antenna array is connected to the +45 ° polarized half-wave elements of the 4 second antenna units; the-45 ° polarized port of the second antenna array is connected to the-45 ° polarized half-wave element of the 4 second antenna elements.
Preferably, the distance between two second antenna units opposite to each other in the second antenna array is 1.5 λ, where λ is the wavelength of the central frequency point of the second frequency band.
Preferably, the third antenna unit is fixed to the reflection plate by a plastic support pillar.
Preferably, the central distance between two third antenna units of each group of third antenna units in the third antenna array is 0.9 λ, where λ is the wavelength of the central frequency point of the third frequency band.
Preferably, the first frequency band is 800-.
Preferably, side plates are arranged around the reflecting plate.
The utility model has the advantages of: in the high-density stadium endowing antenna, 4 first antenna units of a first antenna array are distributed at 45 degrees, 135 degrees, 225 degrees and 315 degrees on the circumference in sequence, 4 second antenna units of a second antenna array are distributed at 0 degrees, 90 degrees, 180 degrees and 270 degrees on the circumference in sequence, and third antenna units of a third antenna array are symmetrically arranged at two sides of the first antenna units, so that the first antenna array, the second antenna array and the third antenna array are staggered and embedded on a reflecting plate, the antenna size and the symmetry of an antenna directional diagram are effectively reduced, and the multi-band antenna layout and design are realized in the limited antenna structure size; in addition, the 4 first antenna units of the first antenna array, the 4 second antenna units of the second antenna array and the 4 groups of third antenna units of the third antenna array all form polarization distribution of plus and minus 45 degrees, so that not only can polarization diversity communication be effectively carried out, but also the anti-multipath fading capability can be enhanced, the frequency mutual interference is greatly reduced, and the isolation inhibition performance between frequency bands is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic perspective view of a high-density venue antenna according to the present invention;
fig. 2 is a schematic plan layout view of the high-density venue antenna of the present invention.
Detailed Description
To make the objects, technical solutions and advantages of the present invention more clearly understood by those skilled in the art, the present invention will be further described with reference to the accompanying drawings and examples. 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 with reference to the drawings are exemplary only for the purpose of explaining the present patent and are not to be construed as limiting the present patent.
As shown in fig. 1 and 2, in an embodiment of the present invention, the high-density stadium antenna includes a reflection plate 40, a first antenna array, a second antenna array and a third antenna array are disposed on the reflection plate 40, the first antenna array supports a first frequency band, and the first antenna array includes 4 first antenna units 10 distributed on a circumference in 45 °, 135 °, 225 ° and 315 ° sequentially; the second antenna array supports a second frequency band, the second antenna array is located in the middle of the first antenna array, the center of the second antenna array is overlapped with the center of the first antenna array, and the second antenna array comprises 4 second antenna units 20 which are sequentially distributed on the circumference at 0 degree, 90 degrees, 180 degrees and 270 degrees; the third antenna array supports a third frequency band, the third antenna array includes 4 groups of third antenna units 30, each group of the third antenna units 30 includes two third antenna units 30 symmetrically disposed on two sides of the first antenna unit 10, and the third antenna units 30 are perpendicular to the axial direction of the radiation arm of the first antenna unit 10.
The embodiment of the utility model provides a high-density venue antenna, 4 first antenna unit 10 of first antenna array are 45 in proper order on the circumference, 135 degrees, 225 degrees and 315 degrees distribute, 4 second antenna unit 20 of second antenna array are 0 in proper order on the circumference, 90 degrees, 180 degrees and 270 degrees distribute, the third antenna unit symmetry of third antenna array sets up in first antenna unit both sides, thereby make first antenna array, second antenna array and third antenna array 40 crisscross on the reflecting plate, inlay the overall arrangement, the symmetry of antenna size and antenna directional diagram has been reduced effectively, thereby realized multiband antenna overall arrangement and design in limited antenna structure size; in addition, the 4 first antenna units 10 of the first antenna array, the 4 second antenna units 20 of the second antenna array and the 4 groups of third antenna units 30 of the third antenna array all form polarization distribution of plus and minus 45 degrees, so that not only can polarization diversity communication be effectively carried out, but also the anti-multipath fading capability can be enhanced, the frequency mutual interference can be greatly reduced, and the isolation inhibition performance between frequency bands can be improved.
In some preferred embodiments of the present invention, the first antenna array supports 800-. The first antenna array comprises a + 45-degree polarization port and a-45-degree polarization port, and the + 45-degree polarization port of the first antenna array is connected with two single-polarized half-wave dipole units which are distributed at 45 degrees and 225 degrees on the circumference to form a + 45-degree polarization antenna; the-45-degree polarization port of the first antenna array is connected with two single-polarized half-wave dipole units distributed at 135 degrees and 315 degrees on the circumference to form a-45-degree polarization antenna, and finally a + 45-degree polarization and-45-degree polarization 2-port antenna is formed.
In some preferred embodiments of the present invention, the second antenna array supports 1710-. The second antenna array comprises a + 45-degree polarization port and a-45-degree polarization port, and the + 45-degree polarization port of the second antenna array is connected with the + 45-degree polarization half-wave oscillators of the 4 crossed dual-polarization units to form a + 45-degree polarization antenna; and a-45-degree polarization port of the second antenna array is connected with a-45-degree polarization half-wave oscillator of the 4 crossed dual-polarized units to form a-45-degree polarization antenna, and finally a + 45-degree polarization and-45-degree polarization 2-port antenna is formed.
In some preferred embodiments of the present invention, the third antenna array supports 3400-. The structure and function of the slot antenna unit are the same as those of the broadband slot antenna unit and slot antenna in patent publication No. CN207069045U, and are not described herein again. The third antenna array comprises two + 45-degree polarization ports and two-45-degree polarization ports, each group of slot antenna units is connected with one polarization port of the third antenna array to form a polarization antenna, and finally 2 + 45-degree polarization and 2-45-degree polarization 4-port antennas are formed.
As shown in fig. 2, in some preferred embodiments of the present invention, the distance S1 between two first antenna elements 10 in the first antenna array is S2 ═ λ, where λ is the wavelength of the central frequency point of the first frequency band. The distance S3 between two opposite second antenna elements 20 in the second antenna array is S4 equal to 1.5 λ, where λ is the wavelength of the center frequency point of the second frequency band. The central distance between two third antenna units of each group of third antenna units in the third antenna array is 0.9 lambda, and lambda is the wavelength of a central frequency point of a third frequency band. By optimizing the selection of the space between the antenna units, the mutual coupling between the antenna units is reduced, and the isolation between frequency bands is improved.
And a passive feed network is arranged on the back surface of the reflecting plate 40 and used for exciting and feeding the first antenna array, the second antenna array and the third antenna array. The two single-polarized half-wave dipole units with the same polarization in the first antenna array are fed in parallel, namely the two single-polarized half-wave dipole units distributed at 45 degrees and 225 degrees on the circumference are fed in parallel, and the two single-polarized half-wave dipole units distributed at 135 degrees and 315 degrees on the circumference are fed in parallel, so that the index of the lobe width of about 32 degrees is realized. Polarized half-wave oscillators with the same polarization in the second antenna array are fed in parallel, namely + 45-degree polarized half-wave oscillators of the 4 crossed dual-polarized units are fed in parallel, and-45-degree polarized half-wave oscillators of the 4 crossed dual-polarized units are fed in parallel, so that the index of the lobe width of about 32 degrees is realized. Two slot antenna units of each group of slot antenna units in the third antenna array are fed in parallel, and the index of the lobe width of about 32 degrees is realized.
As shown in fig. 2, in some preferred embodiments of the present invention, side plates 41 are disposed around the reflection plate 40, so that the height of the peripheral plate edge of the reflection plate 40 is higher than the surface of the reflection plate 40, thereby improving the front-to-back ratio of the antenna.
And an antenna outer cover and an installation adjusting device are further arranged on the periphery of the high-density stadium endowing antenna.
The utility model discloses a concrete parameter index of high-density venue antenna is as shown in table 1:
table 1:
it can be seen from table 1 that the utility model discloses a high-density gymnasium endows each operating frequency channel of antenna all adopts 45 polarization, and the standing wave is less than or equal to 1.5, and the isolation is greater than or equal to 28 db. The gain of the directional diagram is 12 +/-3 db, and the side lobe inhibition endowment index is more than or equal to 15 db.
The foregoing is considered as illustrative of the preferred embodiments of the invention and is not intended to limit the invention in any way. Various equivalent changes and modifications can be made on the basis of the above embodiments by those skilled in the art, and all equivalent changes and modifications within the scope of the claims should fall within the protection scope of the present invention.
Claims (10)
1. The utility model provides a high-density stadium endowment antenna, including the reflecting plate, its characterized in that is provided with on the reflecting plate:
the antenna comprises a first antenna array and a second antenna array, wherein the first antenna array supports a first frequency band and comprises 4 first antenna units which are distributed on the circumference in 45 degrees, 135 degrees, 225 degrees and 315 degrees in sequence;
the second antenna array supports a second frequency band, the second antenna array is located in the middle of the first antenna array, the center of the second antenna array is overlapped with the center of the first antenna array, and the second antenna array comprises 4 second antenna units which are sequentially distributed on the circumference at 0 degree, 90 degrees, 180 degrees and 270 degrees;
and the third antenna array supports a third frequency band, and comprises 4 groups of third antenna units, each group of third antenna units comprises two third antenna units which are symmetrically arranged on two sides of the first antenna unit, and the third antenna units are vertical to the axial direction of the radiation arm of the first antenna unit.
2. The high-density stadium antenna as recited in claim 1, wherein the first antenna element is a single-polarized half-wave dipole element, the second antenna element is a cross dual-polarized element, and the third antenna element is a slot antenna element.
3. The high-density stadium antenna of claim 2, wherein the first antenna array includes +45 ° polarized ports and-45 ° polarized ports, the +45 ° polarized ports of the first antenna array being connected to two first antenna elements distributed at 45 ° and 225 ° around the circumference; the-45 ° polarized ports of the first antenna array are connected with two first antenna units distributed at 135 ° and 315 ° on the circumference.
4. The antenna of claim 3, wherein the distance between two first antenna elements in the first antenna array is λ, λ being the wavelength of the center frequency point of the first frequency band.
5. The high-density stadium antenna of claim 2, wherein the second antenna array includes a +45 ° polarized port and a-45 ° polarized port, the +45 ° polarized port of the second antenna array being connected to the +45 ° polarized half-wave elements of the 4 second antenna elements; the-45 ° polarized port of the second antenna array is connected to the-45 ° polarized half-wave element of the 4 second antenna elements.
6. The antenna of claim 5, wherein the distance between two second antenna elements in the second antenna array is 1.5 λ, where λ is the wavelength of the center frequency point of the second frequency band.
7. The high-density stadium antenna of claim 2, wherein the third antenna unit is secured to the reflector plate by a plastic support post.
8. The antenna of claim 7, wherein the distance between the centers of the two third antenna elements of each set of third antenna elements in the third antenna array is 0.9 λ, where λ is the wavelength of the center frequency point of the third frequency band.
9. The antenna of claim 1, wherein the first frequency band is 800-960MHz frequency band, the second frequency band is 1710-2690MHz frequency band, and the third frequency band is 3400-3600MHz frequency band.
10. The high-density stadium antenna of claim 1, wherein the reflector panel is provided with side panels around the reflector panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021590610.9U CN212908110U (en) | 2020-08-03 | 2020-08-03 | High-density venue antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021590610.9U CN212908110U (en) | 2020-08-03 | 2020-08-03 | High-density venue antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212908110U true CN212908110U (en) | 2021-04-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021590610.9U Active CN212908110U (en) | 2020-08-03 | 2020-08-03 | High-density venue antenna |
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| Country | Link |
|---|---|
| CN (1) | CN212908110U (en) |
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2020
- 2020-08-03 CN CN202021590610.9U patent/CN212908110U/en active Active
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