CN112216972A - Low-frequency radiation unit and base station antenna - Google Patents
Low-frequency radiation unit and base station antenna Download PDFInfo
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- CN112216972A CN112216972A CN202011112359.XA CN202011112359A CN112216972A CN 112216972 A CN112216972 A CN 112216972A CN 202011112359 A CN202011112359 A CN 202011112359A CN 112216972 A CN112216972 A CN 112216972A
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- 230000005855 radiation Effects 0.000 title claims abstract description 64
- 239000000758 substrate Substances 0.000 claims abstract description 18
- 238000003491 array Methods 0.000 claims description 19
- 239000002184 metal Substances 0.000 claims description 7
- 239000004020 conductor Substances 0.000 claims description 3
- 238000004512 die casting Methods 0.000 claims description 3
- 238000001914 filtration Methods 0.000 abstract description 5
- 238000003466 welding Methods 0.000 description 5
- 238000004891 communication Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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- 230000010287 polarization Effects 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
- H01Q1/521—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
- H01Q15/0006—Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices
- H01Q15/0053—Selective devices used as spatial filter or angular sidelobe filter
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
- H01Q19/10—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
- H01Q19/106—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces using two or more intersecting plane surfaces, e.g. corner reflector antennas
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/0006—Particular feeding systems
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/30—Combinations of separate antenna units operating in different wavebands and connected to a common feeder system
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/16—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole
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- Variable-Direction Aerials And Aerial Arrays (AREA)
- Aerials With Secondary Devices (AREA)
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Abstract
The invention provides a low-frequency radiation unit, which comprises a dielectric substrate, a radiator and a feed balun; the radiating body comprises two groups of dipoles which are orthogonally distributed on the dielectric substrate, each group of dipoles comprises two radiating arms with main bodies in circular structures, a plurality of open-circuit branches are arranged on the inner sides of the radiating arms, each open-circuit branch comprises a first line segment and a second line segment which are connected in a bent manner, the outer end of the first line segment is connected with the radiating arms, the outer end of the second line segment is open-circuit, and the second line segment is parallel to the inner sides of the radiating arms; the feed balun is in an orthogonal structure, the lower end of the feed balun is connected with the reflecting plate, and the upper end of the feed balun is connected with the radiating body. The invention also provides a base station antenna with the low-frequency radiation unit. Therefore, the low-frequency radiation unit has a filtering function, the influence of the low-frequency radiation unit on the high-frequency radiation performance can be effectively reduced when the high-frequency and low-frequency antennas are nested in the array, and the miniaturization of the size of the antenna can be realized.
Description
Technical Field
The invention relates to the technical field of wireless communication, in particular to a low-frequency radiating unit and a base station antenna.
Background
With the rapid development of wireless communication, the problem of shortage of site resources is increasingly appearing when the station is built in a 5G scale. In order to achieve rapid deployment, a 5G site mainly adds a 5G antenna and a device on the original 4G site resource, and thus a space needs to be left in the existing site for placing the 5G antenna and the device, so that the antennas of the existing site need to be integrated, and multiple frequency band antennas are designed in an integrated manner to release the sky resource for 5G deployment. The integration of the antenna faces many problems, especially there is serious interference between the high and low frequency units, and in order to solve the problem, the high and low frequency arrays are usually pulled apart to reduce the interference, but this method causes the size of the antenna to be larger, the weight and cost of the antenna to be increased, and the wind load is increased, which makes the construction difficult.
In view of the above, the prior art is obviously inconvenient and disadvantageous in practical use, and needs to be improved.
Disclosure of Invention
In view of the above-mentioned drawbacks, an object of the present invention is to provide a low-frequency radiating element and a base station antenna, where the low-frequency radiating element has a filtering function, and when the high-frequency and low-frequency antennas are nested into a sleeve array, the influence of the low-frequency radiating element on the high-frequency radiation performance can be effectively reduced, and the antenna size can be reduced.
In order to achieve the above object, the present invention provides a low frequency radiating element, which includes a dielectric substrate, a radiator and a feed balun; the radiating body comprises two groups of dipoles which are orthogonally distributed on the dielectric substrate, each group of dipoles comprises two radiating arms with main bodies of circular structures, a plurality of open-circuit branches are arranged on the inner sides of the radiating arms, each open-circuit branch comprises a first line segment and a second line segment which are connected with each other in a bent mode, the outer end of the first line segment is connected with the radiating arms, the outer end of the second line segment is open, and the second line segment is parallel to the inner sides of the radiating arms; the feed balun is in an orthogonal structure, the lower end of the feed balun is connected with the reflecting plate, and the upper end of the feed balun is connected with the radiating body.
According to the low-frequency radiation unit, a right-angle structure extends outwards from a quarter of an arc of a main body of each radiation arm, the right-angle structures of the four radiation arms are aligned inwards to form two groups of dipoles which are distributed orthogonally, and the right-angle sides of the right-angle structures of every two adjacent radiation arms are parallel to each other and a preset gap is reserved.
According to the low-frequency radiation unit, the lengths of the open-circuit branches are the same or different.
According to the low-frequency radiation unit, the radius of the main body of the radiation arm is 1/6 of the wavelength of the low-frequency working frequency; and/or
The length of the open-circuit branch is 1/4 of the wavelength of the high-frequency working frequency.
According to the low-frequency radiation unit provided by the invention, the feed balun comprises two first hollow tube bodies, two second hollow tube bodies, and a first feed piece and a second feed piece which are orthogonally installed, wherein the outer walls of the lower ends of the two first hollow tube bodies and the outer walls of the lower ends of the two second hollow tube bodies are mutually connected, and the first feed piece and the second feed piece are respectively inserted into the two first hollow tube bodies;
the lower ends of the two first hollow tube bodies respectively penetrate through the reflecting plate and are electrically connected with the coaxial cable outer conductor on the back of the reflecting plate;
the upper ends of the two second hollow tubes are respectively provided with a clamping groove, the upper ends of the first feed sheet and the second feed sheet are respectively electrically connected with the two clamping grooves, and the lower ends of the first feed sheet and the second feed sheet are electrically connected with the core wire of the coaxial cable at the back of the reflecting plate.
According to the low-frequency radiation unit, the upper ends of the two first hollow tube bodies and the upper ends of the two second hollow tube bodies are respectively provided with at least one metal column, and the metal columns penetrate through the medium substrate and are respectively electrically connected with the four radiation arms; and/or
The first hollow tube body and the second hollow tube body are made by die casting.
According to the low-frequency radiation unit, the first feed piece and the second feed piece are both in an L shape, a concave structure is arranged at the upper end of the first feed piece, a convex structure is arranged at the upper end of the second feed piece, and the first feed piece and the second feed piece are orthogonally installed through the concave structure and the convex structure.
According to the low-frequency radiating unit provided by the invention, the parts of the first feeding sheet and the second feeding sheet inserted into the first hollow tube body are provided with segments with different widths.
The invention also provides a base station antenna which comprises a reflecting plate, wherein a plurality of high-frequency radiating elements and a plurality of low-frequency radiating elements according to any one of claims 1 to 8 are distributed on the reflecting plate, and the low-frequency radiating elements are inserted into the middle of the high-frequency radiating elements in a nested manner.
According to the base station antenna, the plurality of low-frequency radiating units form at least one row of low-frequency linear arrays, and the plurality of high-frequency radiating units form at least one row of high-frequency linear arrays; the low-frequency linear arrays are inserted into the middle of the high-frequency linear arrays in a nested manner.
The low-frequency radiation unit comprises a dielectric substrate, a radiation body positioned on the dielectric substrate and a feed balun positioned below the radiation body; the radiating body comprises two groups of dipoles which are distributed orthogonally, each group of dipoles comprises two radiating arms with round main bodies, a plurality of bent open-circuit branches are arranged on the inner sides of the radiating arms, the outer ends of first line sections of the open-circuit branches are connected with the radiating arms, the outer ends of second line sections of the open-circuit branches are open-circuited, and the second line sections are parallel to the radiating arms; the induced current of the open-circuit branch node at high frequency is opposite to the induced current on the radiation arm, so that the influence of the scattering of the high-frequency induced current on the radiation arm on the high-frequency radiation performance can be counteracted. Therefore, the low-frequency radiation unit has a filtering function, when the high-frequency and low-frequency antenna is embedded in the array, the influence of the low-frequency radiation unit on the high-frequency radiation performance can be effectively reduced, the problem that the size of the antenna is large due to the fact that the high-frequency and low-frequency arrays are pulled apart to reduce interference in the prior art can be avoided, and therefore the size miniaturization of the antenna can be achieved.
Drawings
Fig. 1 is a schematic perspective view of a preferred low frequency radiating element of the present invention;
fig. 2A is a schematic front structural view of a preferred low-frequency radiating element of the present invention;
fig. 2B is a schematic front view of a radiating arm of a preferred low-frequency radiating element according to the present invention;
fig. 3A is a schematic perspective view of a feeding balun of a preferred low-frequency radiating element according to the present invention;
fig. 3B is a schematic front structural diagram of a feeding balun of a preferred low-frequency radiating element according to the present invention;
fig. 4 is a schematic perspective view of a feeding plate of a preferred low-frequency radiating element according to the present invention;
FIG. 5 is a schematic diagram of the front structure of the preferred base station antenna of the present invention;
fig. 6 is a schematic perspective view of a nested small array of high and low frequency radiating elements according to the present invention.
Reference numerals
A low-frequency radiating element 100; a dielectric substrate 10; a radiator 20;
a radiation arm 21; open circuit branches 22; a first line segment 221;
a second line segment 222; a right-angle structure 23; a feed balun 30;
a first hollow tube 31; a second hollow tube 32; the first feeding tab 33;
the second feeding tab 34; a card slot 35; a metal post 36;
a recessed structure 331; the protruding structures 341; a base station antenna 200;
a reflection plate 300; the high-frequency radiation unit 400.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
It should be noted that references in the specification to "one embodiment," "an example embodiment," etc., indicate that the embodiment described may include a particular feature, structure, or characteristic, but every embodiment may not necessarily include the particular feature, structure, or characteristic. Moreover, such phrases are not intended to refer to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with an embodiment, it is submitted that it is within the knowledge of one skilled in the art to effect such feature, structure, or characteristic in connection with other embodiments whether or not explicitly described.
Moreover, where certain terms are used throughout the description and following claims to refer to particular components or features, those skilled in the art will understand that manufacturers may refer to a component or feature by different names or terms. This specification and the claims that follow do not intend to distinguish between components or features that differ in name but not function. In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to. In addition, the term "connected" as used herein includes any direct and indirect electrical connection. Indirect electrical connection means include connection by other means.
Fig. 1 to 4 show a preferred structure of the low frequency radiating unit of the present invention, and the low frequency radiating unit 100 includes a dielectric substrate 10, a radiator 20 located on the dielectric substrate 10, and a feeding balun 30 located below the radiator 20. As shown in fig. 2A, the radiator 20 (or referred to as a vibrator) includes two groups of dipoles orthogonally distributed on the dielectric substrate 10, and the dipoles are respectively distributed in the ± 45 ° direction of the dielectric substrate 10 to form two polarizations of ± 45 ° to form a dual-polarized radiation unit.
As shown in fig. 2A and 2B, each group of dipoles comprises two radiating arms 21 having a circular main body structure, and the radius (R) of the main body of the radiating arms 21 is preferably about 1/6 of the wavelength (λ 1) of the low-frequency operating frequency. A plurality of open-circuit branches 22 are integrated on the radiation arm 21, and the open-circuit branches 22 are located on the circular inner side of the radiation arm 21. The open-circuit branch 22 includes a first line 221 and a second line 222 connected to each other in a bent shape, that is, the first line 221 and the second line 222 together form the open-circuit branch 22 in a bent line shape. The outer end of the first line segment 221 is connected to the radiating arm 21, the outer end of the second line segment 222 is open-circuited, and the second line segment 222 is parallel to the circular inner side of the radiating arm 21 by bending. Preferably, the length of the open stub 22 is about 1/4 times the wavelength of the high frequency operating frequency, and the lengths of the open stubs 22 may be the same or different. The induced current of the open branch 22 at high frequency is opposite to the induced current on the radiation arm 21, and the influence of the scattering of the high-frequency induced current on the radiation arm 21 on the high-frequency radiation performance can be counteracted, so that the low-frequency radiation unit 100 of the invention can be inserted into a high-frequency array to realize a nested array.
As shown in fig. 1 or fig. 3, the feeding balun 30 is in an orthogonal structure, and a lower end of the feeding balun 30 is connected to the reflection plate 300, that is, the lower end of the feeding balun 30 is in feeding connection with the feeding network. The upper end of the feeding balun 30 is connected to the radiator 20, that is, the upper end of the feeding balun 30 is in feeding connection with the radiator 20.
Therefore, the low-frequency radiation unit 100 has a filtering function, a multi-frequency antenna integrated design can be realized under the condition that the size of the antenna is not increased, the influence of the low-frequency radiation unit 100 on the high-frequency radiation performance can be effectively reduced when the high-frequency and low-frequency antennas are nested in an array, the size of the antenna is reduced, the weight and the cost of the antenna are reduced, the wind load is reduced, and the construction is facilitated.
In the preferred embodiment shown in fig. 2A and 2B, a right-angle structure 23 extends outwards from a quarter of an arc of the main body of the radiating arm 21, the right-angle structures 23 of four radiating arms 21 are aligned inwards to form two groups of orthogonally distributed dipoles, and the right-angle sides of the right-angle structures 23 of every two adjacent radiating arms 21 are parallel to each other and have a predetermined gap. The right-angled structure 23 of the radiating arms 21 is designed to facilitate the assembly of the four radiating arms 21 into the radiator 20.
As shown in fig. 3 to 4, the feeding balun 30 preferably includes four hollow tubular structures and two feeding pieces, and specifically includes two first hollow tubes 31, two second hollow tubes 32, and a first feeding piece 33 and a second feeding piece 34 which are orthogonally mounted, and the outer walls of the lower ends of the two first hollow tubes 31 and the two second hollow tubes 32 are connected together to perform a balanced feeding function. Preferably, the first hollow tube 31 and the second hollow tube 32 are made by die casting.
The first and second feeding tabs 33 and 34 are inserted into the two first hollow tubes 31, respectively. The lower ends of the two first hollow tubes 31 respectively penetrate through the reflector 300 and are electrically connected to the coaxial cable outer conductor at the back of the reflector 300, preferably by welding. The upper ends of the two second hollow tubes 32 are respectively provided with a clamping groove 35, and the upper ends of the first feeding piece 33 and the second feeding piece 34 are respectively electrically connected with the two clamping grooves 35, preferably by welding feeding. The lower ends of the first and second feeding pieces 33 and 34 are electrically connected to the core wire of the coaxial cable at the back of the reflection plate 300, preferably by soldering feeding.
As shown in fig. 3A and 3B, at least one metal post 36 is preferably disposed at the upper end of each of the two first hollow tubes 31 and the two second hollow tubes 32, and the metal posts 36 penetrate through the dielectric substrate 10 and are electrically connected to the four radiating arms 21, preferably by welding.
As shown in fig. 4, the first feeding tab 33 and the second feeding tab 34 are both L-shaped, a concave structure 331 is disposed at an upper end of the first feeding tab 33, a convex structure 341 is disposed at an upper end of the second feeding tab 34, and the first feeding tab 33 and the second feeding tab 34 are orthogonally installed through the concave structure 331 and the convex structure 341. The first feeding piece 33 and the second feeding piece 34 are respectively inserted into the first hollow tube 31, the upper ends of the first feeding piece 33 and the second feeding piece 34 are connected to the slot 35 at the upper end of the second hollow tube 32 by welding or the like, and the lower ends of the first feeding piece 33 and the second feeding piece 34 are in feeding connection with the core wire of the coaxial cable at the back of the reflector 300 by welding or the like.
As shown in fig. 4, the portions of the first feeding tab 33 and the second feeding tab 34 inserted into the first hollow tube 31 are preferably provided with different widths of segment structures, which can be used to adjust the matching of the radiating elements and improve the standing wave.
Fig. 5 to 6 show the structure of a preferred base station antenna of the present invention, and the base station antenna 200 uses the low frequency radiation unit 100 as shown in fig. 1 to 4. Specifically, the base station antenna 200 includes a reflection plate 300, a plurality of high frequency radiation units 400 and a plurality of low frequency radiation units 100 are distributed on the reflection plate 300, and the low frequency radiation units 100 are inserted into the middle of the high frequency radiation units 400.
Fig. 6 is a small array structure using the radiation unit, the small array including one low frequency radiation unit 100, four high frequency radiation units 400, and a reflection plate 300, the low frequency radiation unit 100 and the high frequency radiation unit 400 being disposed on the reflection plate 300, and the low frequency radiation unit 100 being disposed in the middle of the four high frequency radiation units 400.
Preferably, the plurality of low frequency radiating elements 100 form at least one row of low frequency linear arrays, the plurality of high frequency radiating elements 400 form at least one row of high frequency linear arrays, and the low frequency linear arrays are nested and inserted in the middle of the high frequency linear arrays. In the embodiment shown in fig. 5, the base station antenna 200 includes a nested array antenna composed of two low-frequency linear arrays and four high-frequency linear arrays, where two low-frequency linear arrays are nested and inserted into four high-frequency linear arrays. In the horizontal direction, four rows of high-frequency radiating units 400 are arranged at equal intervals, the row interval is about 0.75 wavelength of the high-frequency central frequency point, two rows of low-frequency radiating units 100 are respectively positioned in the middle of a first high-frequency row and a second high-frequency row, and the row interval is about 1.5 wavelength of the high-frequency central frequency point in the middle of a third high-frequency row and a fourth high-frequency row; in the vertical direction, the high-low frequency array can be set with different intervals according to specific requirements, and the array antenna is equivalent to integrating two low-frequency antennas on the basis of the original four high-frequency antennas on the basis of not increasing the size, so that the size of the antenna is greatly reduced.
It should be reminded that the number of columns of the high-frequency linear array and the low-frequency linear array of the base station antenna 200 is not limited, and can be arbitrarily set according to actual needs.
In summary, the low-frequency radiating unit of the present invention includes a dielectric substrate, a radiator located on the dielectric substrate, and a feed balun located below the radiator; the radiating body comprises two groups of dipoles which are distributed orthogonally, each group of dipoles comprises two radiating arms with round main bodies, a plurality of bent open-circuit branches are arranged on the inner sides of the radiating arms, the outer ends of first line sections of the open-circuit branches are connected with the radiating arms, the outer ends of second line sections of the open-circuit branches are open-circuited, and the second line sections are parallel to the radiating arms; the induced current of the open-circuit branch node at high frequency is opposite to the induced current on the radiation arm, so that the influence of the scattering of the high-frequency induced current on the radiation arm on the high-frequency radiation performance can be counteracted. Therefore, the low-frequency radiation unit has a filtering function, when the high-frequency and low-frequency antenna is embedded in the array, the influence of the low-frequency radiation unit on the high-frequency radiation performance can be effectively reduced, the problem that the size of the antenna is large due to the fact that the high-frequency and low-frequency arrays are pulled apart to reduce interference in the prior art can be avoided, and therefore the size miniaturization of the antenna can be achieved.
The present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof, and it should be understood that various changes and modifications can be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. A low-frequency radiation unit is characterized by comprising a dielectric substrate, a radiator and a feed balun; the radiating body comprises two groups of dipoles which are orthogonally distributed on the dielectric substrate, each group of dipoles comprises two radiating arms with main bodies of circular structures, a plurality of open-circuit branches are arranged on the inner sides of the radiating arms, each open-circuit branch comprises a first line segment and a second line segment which are connected with each other in a bent mode, the outer end of the first line segment is connected with the radiating arms, the outer end of the second line segment is open, and the second line segment is parallel to the inner sides of the radiating arms; the feed balun is in an orthogonal structure, the lower end of the feed balun is connected with the reflecting plate, and the upper end of the feed balun is connected with the radiating body.
2. The low-frequency radiating element according to claim 1, wherein a right-angle structure extends outwards from a quarter of an arc of the main body of the radiating arm, the right-angle structures of four radiating arms are aligned inwards to form two groups of orthogonally distributed dipoles, and the right-angle sides of the right-angle structures of every two adjacent radiating arms are parallel to each other and have a predetermined gap.
3. The low frequency radiating element of claim 1, wherein the open-circuit branches have the same or different lengths.
4. The low frequency radiating element of claim 1, wherein the body of the radiating arm has a radius of 1/6 wavelengths of the low frequency operating frequency; and/or
The length of the open-circuit branch is 1/4 of the wavelength of the high-frequency working frequency.
5. The low-frequency radiating element according to claim 1, wherein the feed balun includes two first hollow tubes, two second hollow tubes, and a first feed tab and a second feed tab which are orthogonally mounted, the two first hollow tubes and the two second hollow tubes are connected to each other at lower end outer walls thereof, and the first feed tab and the second feed tab are respectively inserted into the two first hollow tubes;
the lower ends of the two first hollow tube bodies respectively penetrate through the reflecting plate and are electrically connected with the coaxial cable outer conductor on the back of the reflecting plate;
the upper ends of the two second hollow tubes are respectively provided with a clamping groove, the upper ends of the first feed sheet and the second feed sheet are respectively electrically connected with the two clamping grooves, and the lower ends of the first feed sheet and the second feed sheet are electrically connected with the core wire of the coaxial cable at the back of the reflecting plate.
6. The low-frequency radiating unit according to claim 5, wherein at least one metal column is disposed at each of upper ends of the two first hollow tubes and the two second hollow tubes, and the metal columns penetrate through the dielectric substrate and are electrically connected to the four radiating arms respectively; and/or
The first hollow tube body and the second hollow tube body are made by die casting.
7. The low frequency radiation unit according to claim 5, wherein the first feed plate and the second feed plate are both L-shaped, a concave structure is provided at an upper end of the first feed plate, a convex structure is provided at an upper end of the second feed plate, and the first feed plate and the second feed plate are orthogonally installed with respect to each other through the concave structure and the convex structure.
8. The low frequency radiating element of claim 5, wherein the portions of the first feed tab and the second feed tab inserted into the first hollow tube are provided in different width segments.
9. A base station antenna, characterized in that, it comprises a reflection plate, on which a plurality of high frequency radiation units and a plurality of low frequency radiation units according to any claim 1-8 are distributed, the low frequency radiation units are nested and inserted in the middle of the high frequency radiation units.
10. The base station antenna according to claim 9, wherein a plurality of said low frequency radiating elements form at least one row of low frequency linear arrays, and a plurality of said high frequency radiating elements form at least one row of high frequency linear arrays; the low-frequency linear arrays are inserted into the middle of the high-frequency linear arrays in a nested manner.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011112359.XA CN112216972A (en) | 2020-10-16 | 2020-10-16 | Low-frequency radiation unit and base station antenna |
| PCT/CN2021/075796 WO2022077818A1 (en) | 2020-10-16 | 2021-02-07 | Low-frequency radiation unit and base station antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011112359.XA CN112216972A (en) | 2020-10-16 | 2020-10-16 | Low-frequency radiation unit and base station antenna |
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| CN112216972A true CN112216972A (en) | 2021-01-12 |
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| CN202011112359.XA Pending CN112216972A (en) | 2020-10-16 | 2020-10-16 | Low-frequency radiation unit and base station antenna |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113725596A (en) * | 2021-08-27 | 2021-11-30 | 华南理工大学 | Antenna and radiation unit |
| CN113937493A (en) * | 2021-11-02 | 2022-01-14 | 苏州东山精密制造股份有限公司 | Low-frequency radiation unit and antenna array |
| US20220094065A1 (en) * | 2020-09-21 | 2022-03-24 | Ace Technologies Corporation | Low loss wideband radiator for base station antenna |
| WO2022077818A1 (en) * | 2020-10-16 | 2022-04-21 | 摩比天线技术（深圳）有限公司 | Low-frequency radiation unit and base station antenna |
| CN115954655A (en) * | 2023-03-15 | 2023-04-11 | 微网优联科技(成都)有限公司 | Common-caliber double-frequency base station antenna |
| WO2023123739A1 (en) * | 2021-12-28 | 2023-07-06 | 广东博纬通信科技有限公司 | Multi-branch ultra-wideband radiation unit and antenna |
| WO2023216587A1 (en) * | 2022-05-07 | 2023-11-16 | 京信通信技术(广州)有限公司 | Decoupling radiation unit, antenna apparatus, antenna array and antenna device |
| WO2024104087A1 (en) * | 2022-11-18 | 2024-05-23 | 中信科移动通信技术股份有限公司 | Antenna radiation unit and antenna |
Family Cites Families (4)
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| CN202076403U (en) * | 2011-05-16 | 2011-12-14 | 摩比天线技术（深圳）有限公司 | Double-frequency dual-polarization antenna oscillator of loading filter |
| US20170062940A1 (en) * | 2015-08-28 | 2017-03-02 | Amphenol Corporation | Compact wideband dual polarized dipole |
| CN206225539U (en) * | 2016-10-28 | 2017-06-06 | 华南理工大学 | A kind of whole plane dual polarized antenna |
| CN112216972A (en) * | 2020-10-16 | 2021-01-12 | 摩比天线技术（深圳）有限公司 | Low-frequency radiation unit and base station antenna |
-
2020
- 2020-10-16 CN CN202011112359.XA patent/CN112216972A/en active Pending
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2021
- 2021-02-07 WO PCT/CN2021/075796 patent/WO2022077818A1/en active Application Filing
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| WO2022077818A1 (en) * | 2020-10-16 | 2022-04-21 | 摩比天线技术（深圳）有限公司 | Low-frequency radiation unit and base station antenna |
| CN113725596B (en) * | 2021-08-27 | 2023-11-21 | 华南理工大学 | Antenna and radiating element |
| CN113725596A (en) * | 2021-08-27 | 2021-11-30 | 华南理工大学 | Antenna and radiation unit |
| WO2023077839A1 (en) * | 2021-11-02 | 2023-05-11 | 苏州东山精密制造股份有限公司 | Low-frequency radiating element and antenna array |
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| WO2023123739A1 (en) * | 2021-12-28 | 2023-07-06 | 广东博纬通信科技有限公司 | Multi-branch ultra-wideband radiation unit and antenna |
| WO2023216587A1 (en) * | 2022-05-07 | 2023-11-16 | 京信通信技术(广州)有限公司 | Decoupling radiation unit, antenna apparatus, antenna array and antenna device |
| WO2024104087A1 (en) * | 2022-11-18 | 2024-05-23 | 中信科移动通信技术股份有限公司 | Antenna radiation unit and antenna |
| CN115954655A (en) * | 2023-03-15 | 2023-04-11 | 微网优联科技(成都)有限公司 | Common-caliber double-frequency base station antenna |
| CN115954655B (en) * | 2023-03-15 | 2023-05-16 | 微网优联科技(成都)有限公司 | Common-caliber double-frequency base station antenna |
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