CN211629302U - Dual-polarized antenna and array - Google Patents
Dual-polarized antenna and array Download PDFInfo
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- CN211629302U CN211629302U CN202020111196.2U CN202020111196U CN211629302U CN 211629302 U CN211629302 U CN 211629302U CN 202020111196 U CN202020111196 U CN 202020111196U CN 211629302 U CN211629302 U CN 211629302U
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- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
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Abstract
The utility model discloses a dual-polarized antenna and an array, wherein the dual-polarized antenna comprises a substrate, an antenna main body and a feed circuit; the antenna main body is arranged on the first surface of the substrate, and metallized through holes are formed in the substrate and surround the antenna main body; the antenna main body comprises a first feeding branch, a second feeding branch and a metal patch; one end of the first feed branch is connected with the metal patch, and the other end of the first feed branch is provided with a first feed point; one end of the second feed branch is connected with the metal patch, the other end of the second feed branch is provided with a second feed point, the first feed point and the second feed point are both connected with the feed circuit, and an included angle larger than zero is formed between the first feed branch and the second feed branch. The electromagnetic field of the dual-polarized antenna is attenuated through the metalized via holes, so that the metalized via holes play a role in shielding, interference among the dual-polarized antennas at a short distance in the array is reduced, and normal work of the dual-polarized antennas is guaranteed.
Description
Technical Field
The utility model relates to a wireless communication field, in particular to dual polarized antenna and array.
Background
Antennas are important components of wireless communication systems as a means of transmitting and receiving electromagnetic waves. The dual-polarized antenna can simultaneously transmit and receive electromagnetic wave signals with two orthogonal polarization directions, which is equivalent to providing two transmission channels on a frequency band, and can effectively improve the reliability of a wireless communication system.
In the actual use process, a plurality of dual-polarized antennas are often required to form an array, but interference is generated between the dual-polarized antennas at a short distance, so that the normal operation of the dual-polarized antennas is influenced.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a dual polarized antenna and array to solve when current dual polarized antenna constitutes the array, can cause the distance to produce the interference between the nearer dual polarized antenna, thereby influence the problem of dual polarized antenna's normal work.
In a first aspect, according to an embodiment of the present invention, there is provided a dual polarized antenna, including a substrate, an antenna main body, and a feed circuit;
the antenna main body is arranged on the first surface of the substrate, and a metalized through hole is formed in the substrate and surrounds the antenna main body;
the antenna main body comprises a first feeding branch, a second feeding branch and a metal patch;
one end of the first feed branch is connected with the metal patch, and the other end of the first feed branch is provided with a first feed point; one end of the second feeding branch is connected with the metal patch, the other end of the second feeding branch is provided with a second feeding point, the first feeding point and the second feeding point are both connected with the feeding circuit,
and an included angle which is larger than zero is formed between the first feeding branch and the second feeding branch.
Specifically, the first feeding branch is bent towards a first direction, the second feeding branch is bent towards a second direction, and the first direction and the second direction are the same or different.
The first feeding direction of the first feeding point is the same as the vertical polarization direction of the antenna, and the second feeding direction of the second feeding point is the same as the horizontal polarization direction of the antenna.
Specifically, the first feed branch comprises a first impedance matching patch and a first connecting line bent towards the first direction, and the first impedance matching patch is connected with the metal patch through the first connecting line;
the second feed branch comprises a second impedance matching patch and a second connecting line bent towards the second direction, and the second impedance matching patch is connected with the metal patch through the second connecting line.
Specifically, the first connecting line comprises a first connecting section, a second connecting section and a third connecting section, and the first connecting section is connected with the third connecting section through the second connecting section;
the first connecting section and the third connecting section are perpendicular to each other, and the second connecting section is inclined by 45 degrees relative to the third connecting section;
the second connecting line comprises a fourth connecting section, a fifth connecting section and a sixth connecting section, and the fourth connecting section is connected with the sixth connecting section through the fifth connecting section;
the fourth connecting section and the sixth connecting section are perpendicular to each other, and the fifth connecting section is inclined by 45 degrees relative to the sixth connecting section.
Specifically, the feeding circuit is disposed on a second surface of the substrate, the second surface being opposite to the first surface.
Specifically, the base plate comprises a first reference ground layer, a second reference ground layer and an FR4 medium plate arranged between the first reference ground layer and the second reference ground layer;
the first reference stratum is provided with a patch window, and the first feed branch, the second feed branch and the metal patch are located in the patch window.
Specifically, the FR4 dielectric plate has a thickness of 1.6mm and a dielectric constant of 4.6.
In a second aspect, according to an embodiment of the present invention, there is provided a dual-polarized antenna array, comprising an array of a plurality of the above dual-polarized antennas.
Specifically, the array is a square array or a circular array.
The embodiment of the utility model provides a dual polarized antenna and array, dual polarized antenna's electromagnetic field produces the decay via the metallization via hole, and the metallization via hole plays shielded effect like this to reduce the interference between the nearer dual polarized antenna of distance in the array, guarantee dual polarized antenna's normal work.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required 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 for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a perspective view of a dual polarized antenna provided in an embodiment of the present invention;
FIG. 2 is a front view of FIG. 1;
FIG. 3 is an enlarged view of a portion of FIG. 2;
FIG. 4 is a partial enlarged view of B in FIG. 2;
fig. 5 is a layout diagram of a dual-polarized antenna array according to an embodiment of the present invention;
fig. 6 is a layout diagram of a dual-polarized antenna array according to another embodiment of the present invention.
The antenna comprises a substrate 1, a substrate 11, a first reference ground layer, a dielectric slab 12-FR4, a patch window 121, a second reference ground layer 13, an antenna body 2, a metal patch 21, a first feed branch 22, a first feed point 221, a first impedance matching patch 222, a first connecting line 223, a first connecting section 2231, a second connecting section 2232, a third connecting section 2233, a second feed branch 23, a second feed point 231, a second impedance matching patch 232, a second connecting line 233, a fourth connecting section 2331, a fifth connecting section 2332, a sixth connecting section 2333 and a metallized via hole 3.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
In a first aspect, as shown in fig. 1 and 2, according to an embodiment of the present invention, there is provided a dual polarized antenna, including a substrate 1, an antenna main body 2, and a feed circuit; the antenna body 2 is arranged on the first surface of the substrate 1, and a metalized through hole 3 is formed in the substrate 1 and surrounds the antenna body 2; the antenna main body 2 comprises a first feeding branch 22, a second feeding branch 23 and a metal patch 21; one end of the first feeding branch 22 is connected with the metal patch 21, and the other end of the first feeding branch 22 is provided with a first feeding point 221; one end of the second feeding branch 23 is connected with the metal patch 21, the other end of the second feeding branch 23 is provided with a second feeding point 231, the first feeding point 221 and the second feeding point 231 are both connected with the feeding circuit, and an included angle larger than zero is formed between the first feeding branch 22 and the second feeding branch 23.
The metallized via holes 3 surround the antenna body 2 to form an array of metallized via holes 3, the array of metallized via holes 3 can be circular or square, and the like, and taking the array of circular metallized via holes 3 as an example, the center of the array of circular metallized via holes 3 coincides with the center of the metal patch 21. The antenna body 2 may be made of a conductive material such as silver, aluminum, iron, zinc, or a metal alloy, and preferably a conductive material with low loss such as a copper surface or silver is used.
In this embodiment, since the first feeding branch 22 and the second feeding branch 23 form an included angle larger than zero, the dual-polarized antenna has two polarization directions, and can simultaneously transmit and receive electromagnetic wave signals with two orthogonal polarization directions. And the electromagnetic field of the dual-polarized antenna is attenuated through the metallized through holes 3, so that the metallized through holes 3 play a role in shielding, thereby reducing the interference between the dual-polarized antennas at a short distance in the array and ensuring the normal work of the dual-polarized antennas.
In the above embodiment, as shown in fig. 1 and fig. 2, the first feeding branch 22 is bent in a first direction, and the second feeding branch 23 is bent in a second direction, where the first direction is the same as or different from the second direction.
First feed minor matters 22 and second feed minor matters 23 are buckled, can reduce antenna body 2's size when guaranteeing first feed minor matters 22 and second feed minor matters 23's length to reduce dual polarized antenna's volume, reduce weight, be convenient for integrate and constitute the array, satisfy the demand that electronic product miniaturized used
Specifically, the first feed branch 22 includes a first impedance matching patch 222 and a first connection line 223 bent toward the first direction, and the first impedance matching patch 222 is connected to the metal patch 21 through the first connection line 223; the second feed branch 23 includes a second impedance matching patch 232 and a second connection line 233 bent toward the second direction, and the second impedance matching patch 232 is connected to the metal patch 21 through the second connection line 233.
The first impedance matching patch 222 and the second impedance matching patch 232 may be set according to an actually required operating frequency range, so that the imaginary part of the input impedance is small and the real part is close to 50 ohms to ensure that the antenna and the feeder line are in good impedance matching.
In the above-described embodiment, as shown in fig. 3 and 4, the first connection line 223 includes the first connection section 2231, the second connection section 2232, and the third connection section 2233, and the first connection section 2231 is connected to the third connection section 2233 by the second connection section 2232; the first connecting section 2231 and the third connecting section 2233 are perpendicular to each other, and the second connecting section 2232 is disposed at an angle of 45 ° with respect to the third connecting section 2233; the second connection line 233 includes a fourth connection segment 2331, a fifth connection segment 2332 and a sixth connection segment 2333, the fourth connection segment 2331 being connected to the sixth connection segment 2333 by the fifth connection segment 2332; the fourth connecting segment 2331 and the sixth connecting segment 2333 are perpendicular to each other, and the fifth connecting segments 2332 are respectively disposed at an angle of 45 ° with respect to the sixth connecting segment 2333.
The second connecting segment 2232 and the fourth connecting segment 2331 are used to generate a 45 ° splicing effect, so as to eliminate the discontinuity effect, thereby minimizing the discontinuity effect, and thus ensuring the performance of the dual-polarized antenna, so as to avoid the deterioration of various circuit indexes caused by the discontinuity of the transmission line at the bent portion.
In the above-described embodiment, the feeding circuit is provided on the second surface of the substrate 1, the second surface being opposite to the first surface. The feeding circuit is arranged on the second surface of the substrate 1, so that the wiring of the feeding point circuit can be facilitated, and the manufacture is facilitated.
In the above embodiment, as shown in fig. 1, the base plate 1 includes the first reference ground layer 11, the second reference ground layer 13, and the FR4 dielectric sheet 12 disposed between the first reference ground layer 11 and the second reference ground layer 13; the first reference ground layer 11 is provided with a patch window 121, and the first feeding branch 22, the second feeding branch 23 and the metal patch 21 are located in the patch window 121. The FR4 dielectric board 12 has a thickness of 1.6mm and a dielectric constant of 4.6.
The FR4 material has the advantages of stable electrical insulation, good flatness, smooth surface, no pit, standard thickness tolerance, good electrical characteristics and small environmental influence. The bandwidth of the antenna is expanded by increasing the thickness of the substrate and reducing the dielectric constant of the substrate, but if the ratio of the thickness of the substrate to the wavelength is too large, significant excitation of surface waves is caused, and it is disadvantageous and compact, and therefore, in the present embodiment, the FR4 dielectric plate 12 having a thickness of 1.6mm and a dielectric constant of 4.6 is selected, which can both avoid significant excitation of surface waves and ensure a wide bandwidth of the antenna.
In a second aspect, according to an embodiment of the present invention, there is provided a dual-polarized antenna array, comprising an array of a plurality of the above dual-polarized antennas.
Specifically, the dual-polarized antenna array may adopt various arrangements. As shown in fig. 5, the first dual-polarized antenna array is arranged in a manner that an array formed by a plurality of dual-polarized antennas is square. The square array can be a square array or a rectangular array. The number of dual-polarized antennas contained in each row and each column of the square array is the same, and the number of dual-polarized antennas contained in each row and each column of the rectangular array is different. For a square array, the centers of the dual-polarized antennas in each row are located on the same straight line, the straight line is defined as a first straight line, the centers of the dual-polarized antennas in each column are located on another straight line, the straight line is defined as a second straight line, and the included angle between each row and each column of the square array is 90 degrees, namely the included angle between the first straight line and the second straight line is 90 degrees. And the space between any two adjacent dual-polarized antennas can be different, can also be the same, can also be partly different, partly the same. Preferably, the first pitch of the rows may be the same as the first pitch of the rows, the second pitch of the columns may be the same as the second pitch of the columns, and the first pitch and the second pitch may be the same or different. Wherein, in some embodiments, the first dual-polarized antennas 7 and 8 of the dual-polarized antennas of each row and each column of the array are arranged alternately to reduce mutual interference of two adjacent dual-polarized antennas. In other embodiments, the polarization directions of the dual-polarized antennas in each row and each column of the array are different, so that omni-directional signal receiving is realized.
As shown in fig. 6, the second dual-polarized antenna array is arranged in a manner that an array formed by a plurality of dual-polarized antennas is circular, that is, centers of the dual-polarized antennas are on the same circumference, and distances between any two adjacent dual-polarized antennas may be different, may also be the same, may also be partially different, and is partially the same.
The embodiment of the utility model provides a dual polarized antenna and array, dual polarized antenna's electromagnetic field produces the decay via metallized via hole 3, and metallized via hole 3 plays shielded effect like this to reduce the interference between the nearer dual polarized antenna of distance in the array, guarantee dual polarized antenna's normal work.
Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.
It will be understood that the invention is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.
Claims (9)
1. A dual polarized antenna is characterized by comprising a substrate (1), an antenna main body (2) and a feed circuit;
the antenna main body (2) is arranged on the first surface of the substrate (1), and a metalized through hole (3) is formed in the substrate (1) in a mode of surrounding the antenna main body (2);
the antenna main body (2) comprises a first feeding branch (22), a second feeding branch (23) and a metal patch (21);
one end of the first feeding branch (22) is connected with the metal patch (21), and the other end of the first feeding branch (22) is provided with a first feeding point (221); one end of the second feeding branch (23) is connected with the metal patch (21), the other end of the second feeding branch (23) is provided with a second feeding point (231), the first feeding point (221) and the second feeding point (231) are both connected with the feeding circuit,
and an included angle larger than zero is formed between the first feeding branch (22) and the second feeding branch (23).
2. A dual polarized antenna according to claim 1, characterized in that the first feeding branch (22) is bent in a first direction and the second feeding branch (23) is bent in a second direction, the first direction being the same or different from the second direction.
3. A dual polarized antenna according to claim 2, characterized in that the first feeding branch (22) comprises a first impedance matching patch (222) and a first connection line (223) bent to the first direction, the first impedance matching patch (222) being connected to the metal patch (21) by the first connection line (223);
the second feed branch (23) comprises a second impedance matching patch (232) and a second connecting line (233) bent towards the second direction, and the second impedance matching patch (232) is connected with the metal patch (21) through the second connecting line (233).
4. A dual polarized antenna according to claim 3, characterized in that the first connection line (223) comprises a first connection segment (2231), a second connection segment (2232) and a third connection segment (2233), the first connection segment (2231) being connected to the third connection segment (2233) by the second connection segment (2232);
the first connecting section (2231) and the third connecting section (2233) are perpendicular to each other, and the second connecting section (2232) is arranged at an angle of 45 ° with respect to the third connecting section (2233);
the second connection line (233) comprises a fourth connection segment (2331), a fifth connection segment (2332) and a sixth connection segment (2333), the fourth connection segment (2331) is connected with the sixth connection segment (2333) through the fifth connection segment (2332);
the fourth connecting segment (2331) and the sixth connecting segment (2333) are perpendicular to each other, and the fifth connecting segments (2332) are respectively arranged at an angle of 45 ° with respect to the sixth connecting segment (2333).
5. A dual polarized antenna according to claim 1, characterized in that the feeding circuit is arranged at a second surface of the substrate (1), the second surface being opposite to the first surface.
6. A dual polarized antenna according to claim 1, characterized in that said substrate (1) comprises a first ground reference (11) layer, a second ground reference layer (13) and an FR4 dielectric board (12) arranged between said first ground reference (11) layer and said second ground reference layer (13);
the first reference ground (11) layer is provided with a patch window (121), and the first feeding branch (22), the second feeding branch (23) and the metal patch (21) are located in the patch window (121).
7. A dual polarized antenna according to claim 6, characterized in that said FR4 dielectric board (12) has a thickness of 1.6mm and a dielectric constant of 4.6.
8. A dual polarized antenna array comprising an array of a plurality of dual polarized antennas according to any of claims 1 to 7.
9. The dual polarized antenna array of claim 8, wherein the array is a square array or a circular array.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020111196.2U CN211629302U (en) | 2020-01-17 | 2020-01-17 | Dual-polarized antenna and array |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020111196.2U CN211629302U (en) | 2020-01-17 | 2020-01-17 | Dual-polarized antenna and array |
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| Publication Number | Publication Date |
|---|---|
| CN211629302U true CN211629302U (en) | 2020-10-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020111196.2U Active CN211629302U (en) | 2020-01-17 | 2020-01-17 | Dual-polarized antenna and array |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211629302U (en) |
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2020
- 2020-01-17 CN CN202020111196.2U patent/CN211629302U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A dual-polarized antenna and array Effective date of registration: 20230201 Granted publication date: 20201002 Pledgee: China Construction Bank Corporation Beijing Anhua Sub-branch Pledgor: Tsingoal(Beijing) Technology Co.,Ltd. Registration number: Y2023990000098 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Granted publication date: 20201002 Pledgee: China Construction Bank Corporation Beijing Anhua Sub-branch Pledgor: Tsingoal(Beijing) Technology Co.,Ltd. Registration number: Y2023990000098 |