CN118137147A - Dual-frenquency double polarization common bore basic station antenna - Google Patents

Abstract

The invention provides a dual-frequency dual-polarized common-caliber base station antenna, which comprises: a reflection plate; the first radiating unit comprises a plurality of first vibrator groups, the plurality of first vibrator groups are vertically arranged on the reflecting plate, the plurality of first vibrator groups are surrounded to form a containing cavity, and the first radiating unit is provided with a first central line which is perpendicular to the reflecting plate; the second radiation unit is positioned in the accommodating cavity, the second radiation unit is provided with a second central line which is perpendicular to the reflecting plate and is collinear with the first central line, the second radiation unit comprises a plurality of second vibrator groups, and the plurality of second vibrator groups are vertically arranged on the reflecting plate; the coaming is connected with the reflecting plate, and the coaming is arranged between the first radiating unit and the second radiating unit. The second radiating unit in the scheme is nested in the first radiating unit, the structure is compact and simple, the physical space of a pair of antennas is used for realizing double-frequency performance, the space resource of the iron tower for installing the antennas is saved, and meanwhile, the manufacturing cost and the operation and maintenance cost of the antennas are also saved.

Description

Dual-frenquency double polarization common bore basic station antenna

Technical Field

The invention relates to the technical field of base station antennas, in particular to a dual-frequency dual-polarization common-caliber base station antenna.

Background

With the large-scale commercial of 5G, 4G, 5G system fuses, and iron tower space resource is short-circuited, and the independent antenna operation maintenance cost of a plurality of frequency channels increases, and the demand on the sharing of a space physical resource of multiband antenna is stronger. The frequency bands of the sub6G are far apart, the whole frequency band is wide, and an antenna is difficult to design, so that the frequency band of the sub6G is fully covered.

At present, antennas in different frequency bands are compactly distributed together and share one physical caliber to form a pair of antennas, the antennas in different frequency bands are compactly distributed, coupling can be caused among the antennas, impedance mismatch of the antennas is caused, standing wave ratio is poor, isolation is poor, directional diagram distortion and gain are also caused, and the antenna efficiency is low. The antennas with different frequency bands are arranged in a staggered manner, or special auxiliary structures such as magnetic rings, frequency selective surfaces and the like are loaded to solve the problem of coupling, so that the structure is complex, the size is enlarged, and the processing and manufacturing difficulties are high.

Aiming at the technical problems of large common-caliber structure size and complex structure of the multi-band antenna, no effective solution is proposed at present.

Disclosure of Invention

The invention mainly aims to provide a dual-frequency dual-polarized common-caliber base station antenna, which aims to solve the technical problems of large common-caliber structure size and complex structure of a multi-band antenna.

To achieve the above object, according to one aspect of the present invention, there is provided a dual-band dual-polarized common aperture base station antenna comprising: a reflection plate; the first radiating unit comprises a plurality of first vibrator groups, the plurality of first vibrator groups are vertically arranged on the reflecting plate, the plurality of first vibrator groups are surrounded to form a containing cavity, the first radiating unit is provided with a first center line which is perpendicular to the reflecting plate, and one side of the first radiating unit facing the reflecting plate is provided with a first feed port group; the second radiating unit is arranged independently of the first radiating unit, is positioned in the accommodating cavity, is provided with a second central line which is perpendicular to the reflecting plate and is collinear with the first central line, and comprises a plurality of second vibrator groups which are vertically arranged on the reflecting plate, and a second feed port group is arranged on one side of the second radiating unit facing the reflecting plate; the coaming is connected with the reflecting plate and is arranged between the first radiating unit and the second radiating unit.

Further, the vertical height of the first radiating element is higher than the vertical height of the second radiating element, and the vertical height of the coaming is smaller than the vertical height of the second radiating element.

Further, the first radiation unit includes: the first oscillator comprises a first dielectric plate and a second dielectric plate, the first dielectric plate and the second dielectric plate are oppositely arranged, a first radiation oscillator and a first microstrip line are etched on the first dielectric plate, a second radiation oscillator and a second microstrip line are etched on the second dielectric plate, the first feed port group comprises a first feed port and a second feed port, the first feed port is arranged on the first dielectric plate, the first feed port is respectively electrically connected with the first radiation oscillator and the first microstrip line, and the second feed port is arranged on the second dielectric plate and is respectively electrically connected with the second radiation oscillator and the second microstrip line; the second oscillator comprises a third dielectric plate and a fourth dielectric plate, the third dielectric plate and the fourth dielectric plate are arranged oppositely, a third radiation oscillator and a third microstrip line are etched on the third dielectric plate, a fourth radiation oscillator and a fourth microstrip line are etched on the fourth dielectric plate, the first feed port group further comprises a third feed port and a fourth feed port, the third feed port is arranged on the third dielectric plate, the third feed port is respectively and electrically connected with the third radiation oscillator and the third microstrip line, the fourth feed port is arranged on the fourth dielectric plate, and the fourth feed port is respectively and electrically connected with the fourth radiation oscillator and the fourth microstrip line; the first dielectric plate, the second dielectric plate, the third dielectric plate and the fourth dielectric plate are vertically arranged on the reflecting plate and jointly enclose to form a containing cavity.

Further, the structure of the first vibrator is the same as that of the second vibrator.

Further, each second vibrator group has a center line perpendicular to the reflection plate, and each center line is arranged in line.

Further, the second radiation unit includes: the third oscillator comprises a fifth dielectric plate, a fifth radiation oscillator and a fifth microstrip line are etched on the fifth dielectric plate, the second feed port group comprises a fifth feed port, and the fifth feed port is electrically connected with the fifth radiation oscillator and the fifth microstrip line respectively; the fourth oscillator comprises a sixth dielectric plate, a sixth radiation oscillator and a sixth microstrip line are etched on the sixth dielectric plate, the second feed port group further comprises a sixth feed port, and the sixth feed port is electrically connected with the sixth radiation oscillator and the sixth microstrip line respectively; the fifth dielectric plate and the sixth dielectric plate are vertically arranged on the reflecting plate, the fifth dielectric plate is inserted in the middle of the sixth dielectric plate, and the fifth dielectric plate and the sixth dielectric plate are vertically arranged.

Further, the third vibrator and the fourth vibrator have the same structure.

Further, the coaming has a first cross section arranged in parallel with the reflecting plate, the first cross section is circular or regular polygonal, the coaming has a third center line arranged perpendicular to the reflecting plate, and the third center line is collinear with the first center line and the second center line.

Further, the reflection plate includes: the bearing part is provided with a first radiation unit and a second radiation unit; the first warping part is formed at the first end of the bearing part, the first warping part and the bearing part are arranged at an included angle, and the warping height of the first warping part is lower than the vertical height of the first radiation unit and the vertical height of the second radiation unit; the second warping portion is formed at the second end of the bearing portion, the second warping portion and the bearing portion are arranged in an included angle mode, and the warping height of the second warping portion is lower than the vertical height of the first radiating unit and the vertical height of the second radiating unit.

Further, an included angle between the first warping portion and the bearing portion is an obtuse angle, and an included angle between the second warping portion and the bearing portion is an obtuse angle.

Further, the reflecting plate has a fourth center line passing through the bearing portion and perpendicular to the bearing portion, the fourth center line being collinear with the first center line and the second center line.

By applying the technical scheme of the invention, the first radiating unit and the second radiating unit share the same reflecting plate to realize dual-frequency common-caliber arrangement, the plurality of first vibrator groups of the first radiating unit are vertically arranged on the reflecting plate, the plurality of first vibrator groups are surrounded to form the accommodating cavity, the plurality of second vibrator groups of the second radiating unit are vertically arranged on the reflecting plate, the second radiating unit is positioned in the accommodating cavity, the first central line of the first radiating unit is collinear with the second central line of the second radiating unit, each radiating unit comprises the plurality of vibrator groups to realize dual-polarized arrangement, and the coaming is positioned between the first radiating unit and the second radiating unit to isolate the two radiating units so as to improve isolation between antennas. The second radiating unit in the scheme is nested in the first radiating unit, the structure is compact and simple, the physical space of a pair of antennas is used for realizing double-frequency performance, the space resource of the iron tower for installing the antennas is saved, and meanwhile, the manufacturing cost and the operation and maintenance cost of the antennas are also saved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:

fig. 1 shows a schematic structural diagram of an embodiment of a dual-frequency dual-polarized common aperture base station antenna according to the present invention;

fig. 2 shows a schematic top view of a first radiation unit according to the invention;

FIG. 3 is a schematic view showing the structure of the outer side of the first dielectric plate according to the present invention;

FIG. 4 is a schematic view showing the structure of the inner side of the first dielectric plate according to the present invention;

Fig. 5 shows a schematic top view of a second radiation unit;

FIG. 6 is a schematic view showing the structure of the outer side of the fifth dielectric plate according to the present invention;

FIG. 7 is a schematic view showing the structure of the inner side of the fifth dielectric plate according to the present invention;

Fig. 8 shows a pattern of a first vibrator in the present invention;

fig. 9 shows a pattern of a third vibrator in the present invention.

Wherein the above figures include the following reference numerals:

1. A reflection plate; 11. a carrying part; 12. a first warp; 13. a second warping section;

2. A first radiating element; 21. a first vibrator; 211. a first dielectric plate; 212. a first radiating element; 213. a first microstrip line; 214. a first power supply port; 215. a second power supply port; 216. a second dielectric plate; 22. a second vibrator; 221. a third dielectric plate; 222. a fourth dielectric plate; 223. a third power supply port; 224. a fourth power supply port;

3. A second radiation unit; 31. a third vibrator; 311. a fifth dielectric plate; 312. a fifth radiating element; 313. a fifth microstrip line; 314. a fifth power supply port; 315. a clamping groove; 32. a fourth vibrator; 321. a sixth dielectric plate; 322. a sixth feed port;

4. And (5) coaming plates.

Detailed Description

It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The application will be described in detail below with reference to the drawings in connection with embodiments.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

It should be noted that the terms "first," "second," and the like in the description and the claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Exemplary embodiments according to the present application will now be described in more detail with reference to the accompanying drawings. These exemplary embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. It should be understood that these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of these exemplary embodiments to those skilled in the art, that in the drawings, it is possible to enlarge the thicknesses of layers and regions for clarity, and that identical reference numerals are used to designate identical devices, and thus descriptions thereof will be omitted.

Referring to fig. 1 to 9, a dual-band dual-polarized common aperture base station antenna is provided according to an embodiment of the present application.

Specifically, as shown in fig. 1, the dual-frequency dual-polarized common-aperture base station antenna includes: a reflecting plate 1, a first radiating element 2, a second radiating element 3 and a surrounding plate 4. The first radiation unit 2 comprises a plurality of first vibrator groups, the plurality of first vibrator groups are vertically arranged on the reflecting plate 1, the plurality of first vibrator groups are surrounded to form a containing cavity, the first radiation unit 2 is provided with a first central line which is perpendicular to the reflecting plate 1, and one side, facing the reflecting plate 1, of the first radiation unit 2 is provided with a first feed port 214 group. The second radiation unit 3 is arranged independently of the first radiation unit 2, the second radiation unit 3 is located in the accommodating cavity, the second radiation unit 3 is provided with a second central line perpendicular to the reflecting plate 1, the second central line is collinear with the first central line, the second radiation unit 3 comprises a plurality of second vibrator groups, the plurality of second vibrator groups are vertically arranged on the reflecting plate 1, and one side, facing the reflecting plate 1, of the second radiation unit 3 is provided with a second feed port 215 group. The surrounding plate 4 is connected with the reflecting plate 1, and the surrounding plate 4 is arranged between the first radiating unit 2 and the second radiating unit 3.

By applying the technical scheme of the invention, the first radiating unit 2 and the second radiating unit 3 share the reflecting plate 1 to realize dual-frequency common-caliber setting, the plurality of first vibrator groups of the first radiating unit 2 are vertically arranged on the reflecting plate 1, the plurality of first vibrator groups are surrounded to form a containing cavity, the plurality of second vibrator groups of the second radiating unit 3 are vertically arranged on the reflecting plate 1, the second radiating unit 3 is positioned in the containing cavity, the first central line of the first radiating unit 2 and the second central line of the second radiating unit 3 are collinear, each radiating unit comprises a plurality of vibrator groups to realize dual-polarized setting, and the coaming 4 is positioned between the first radiating unit 2 and the second radiating unit 3 to isolate the two radiating units to improve isolation between antennas. The second radiating element 3 in the scheme is nested in the first radiating element 2, the structure is compact and simple, the physical space of a pair of antennas is used for realizing double-frequency performance, the space resource of the iron tower for installing the antennas is saved, and meanwhile, the manufacturing cost and the operation and maintenance cost of the antennas are also saved.

In the embodiment of the present application, the first radiating element 2 covers the frequency band of 1710MHz to 2165MHz, i.e. the first radiating element 2 is a low frequency radiating element, the wavelength of which is longer, and a larger physical size is required to accommodate the longer wavelength. The second radiation unit 3 covers the frequency band from 3300MHz to 3600MHz, that is, the second radiation unit 3 is a high-frequency radiation unit, the wavelength of the high-frequency radiation unit is shorter, the required physical size is smaller, and therefore the structural design of the high-frequency radiation unit can be more compact.

The first radiation unit 2 and the second radiation unit 3 are independently disposed, that is, there is no connection between the first radiation unit 2 and the second radiation unit 3, and the first radiation unit 2 and the second radiation unit 3 are directly connected to the reflection plate 1.

Further, the vertical height of the first radiating element 2 is higher than the vertical height of the second radiating element 3, and the vertical height of the coaming 4 is smaller than the vertical height of the second radiating element 3.

It should be noted that the overall height of the first radiating element 2 is higher than the overall height of the second radiating element 3, so as to enhance the signal strength of the second radiating element 3, and further increase the overall signal strength of the base station antenna. The height of the enclosure 4 is lower than the height of the second radiating element 3, and the influence on signal transmission of the second radiating element 3 is reduced while isolating the first radiating element 2 and the second radiating element 3.

As shown in fig. 1,2, 3, and 4, the first radiating element 2 includes a first vibrator 21 and a second vibrator 22. Specifically, the plurality of first vibrator groups includes a first vibrator 21 and a second vibrator 22.

The first oscillator 21 comprises a first dielectric plate 211 and a second dielectric plate 216, the first dielectric plate 211 and the second dielectric plate 216 are oppositely arranged, a first radiating oscillator 212 and a first microstrip line 213 are etched on the first dielectric plate 211, a second radiating oscillator and a second microstrip line are etched on the second dielectric plate 216, a first feed port 214 group comprises a first feed port 214 and a second feed port 215, the first feed port 214 is arranged on the first dielectric plate 211, the first feed port 214 is respectively electrically connected with the first radiating oscillator 212 and the first microstrip line 213, and the second feed port 215 is arranged on the second dielectric plate 216 and is respectively electrically connected with the second radiating oscillator and the second microstrip line.

In the embodiment of the present application, the first dielectric plate 211 and the second dielectric plate 216 are disposed in parallel and spaced apart, that is, the first dielectric plate 211 and the second dielectric plate 216 are vertically connected to the reflective plate 1, specifically, the first dielectric plate 211 and the second dielectric plate 216 are connected to the reflective plate 1 by soldering. The first dielectric plate 211 is identical to the second dielectric plate 216 in structure, the first radiating element 212 and the second radiating element are identical in structure and the position on the corresponding dielectric plate, the first microstrip line 213 is identical to the second microstrip line in structure and the position on the corresponding dielectric plate, and the first feed port 214 and the second feed port 215 are fed simultaneously to excite the first element 21.

The second oscillator 22 includes a third dielectric plate 221 and a fourth dielectric plate 222, the third dielectric plate 221 is opposite to the fourth dielectric plate 222, a third radiating oscillator and a third microstrip line are etched on the third dielectric plate 221, a fourth radiating oscillator and a fourth microstrip line are etched on the fourth dielectric plate 222, the first feeding port 214 group further includes a third feeding port 223 and a fourth feeding port 224, the third feeding port 223 is disposed on the third dielectric plate 221, the third feeding port 223 is electrically connected with the third radiating oscillator and the third microstrip line respectively, the fourth feeding port 224 is disposed on the fourth dielectric plate 222, and the fourth feeding port 224 is electrically connected with the fourth radiating oscillator and the fourth microstrip line respectively.

In the embodiment of the present application, the third dielectric plate 221 and the fourth dielectric plate 222 are disposed in parallel and spaced apart, that is, the third dielectric plate 221 and the fourth dielectric plate 222 are vertically connected to the reflection plate 1, and specifically, the third dielectric plate 221 and the fourth dielectric plate 222 are connected to the reflection plate 1 by soldering. The third dielectric plate 221 is identical to the fourth dielectric plate 222 in structure, the third radiating element and the fourth radiating element are identical in structure and position on the corresponding dielectric plate, the third microstrip line and the fourth microstrip line are identical in structure and position on the corresponding dielectric plate, and the third feeding port 223 and the fourth feeding port 224 are simultaneously fed to excite the second element 22.

The first dielectric plate 211, the second dielectric plate 216, the third dielectric plate 221 and the fourth dielectric plate 222 are all vertically arranged on the reflecting plate 1, and jointly enclose to form a containing cavity. In this embodiment, the first vibrator 21 and the second vibrator 22 are vertically arranged, and the first vibrator 21 and the second vibrator 22 are enclosed together to form a square structure, and the middle part of the structure forms a containing cavity.

Taking the first dielectric plate 211 as an example, the first dielectric plate 211 has an inner side and an outer side, the side of the first dielectric plate 211 close to the first center line is the inner side, and the side of the first dielectric plate 211 far from the first center line is the outer side. The first radiating oscillator 212 is located on the outer side surface of the first dielectric plate 211, and the first microstrip line 213 is located on the inner side surface of the first dielectric plate 211; the second radiating oscillator is located on the outer side surface of the second dielectric plate 216, and the second microstrip line is located on the inner side surface of the second dielectric plate 216; the third radiating oscillator is located on the outer side surface of the third dielectric plate 221, and the third microstrip line is located on the inner side surface of the third dielectric plate 221; the fourth radiating element is located on the outer side surface of the fourth dielectric plate 222, and the fourth microstrip line is located on the inner side surface of the fourth dielectric plate 222.

Further, the structure of the first vibrator 21 is the same as that of the second vibrator 22. Specifically, the structures of the first dielectric plate 211, the second dielectric plate 216, the third dielectric plate 221, and the fourth dielectric plate 222 are identical, the structures of the first radiating element 212, the second radiating element, the third radiating element, and the fourth radiating element, and the positions on the corresponding dielectric plates are identical, and the structures of the first microstrip line 213, the second microstrip line, the third microstrip line, and the fourth microstrip line, and the positions on the corresponding dielectric plates are identical. The structure of the first vibrator 21 is the same as that of the second vibrator 22, so that the pattern of the first radiation unit 2 is symmetrical, and the gain of the base station antenna is further improved.

Further, each second vibrator group has a center line perpendicular to the reflection plate 1, and the center lines are arranged in line. The center line of the second oscillator group is collinear with the center line of the second radiating unit 3, that is, the center line of the second oscillator group coincides with the second center line, so that the structure of the second radiating unit 3 is more compact, and the structural size of the base station antenna is further reduced.

In the implementation of the present application, the first dielectric plate 211, the second dielectric plate 216, the third dielectric plate 221 and the fourth dielectric plate 222 are all high-frequency plates RO4350B, the thickness of which is 0.76mm, and the relative dielectric constant of which is 3.48. Specific dimensions of the first dielectric plate 211, the second dielectric plate 216, the third dielectric plate 221, and the fourth dielectric plate 222 are 45mm by 32mm by 0.76mm.

As shown in fig. 3 and 4, the structure of the first dielectric plate 211 is a T-shaped structure, and the outer contour of the first radiating element 212 is disposed along the edge of the first dielectric plate 211 to reduce the overall weight of the antenna, the first microstrip line 213 is located in the middle of the first dielectric plate 211, and the first microstrip line 213 extends to the bottom surface of the first dielectric plate 211 to be connected with the first feed port 214.

As shown in fig. 1, 5, 6, and 7, the second radiation unit 3 includes: a third vibrator 31 and a fourth vibrator 32. Specifically, the plurality of second vibrator groups include a third vibrator 31 and a fourth vibrator 32.

The third vibrator 31 includes a fifth dielectric plate 311, a fifth radiating vibrator 312 and a fifth microstrip line 313 are etched on the fifth dielectric plate 311, the second feeding port 215 group includes a fifth feeding port 314, and the fifth feeding port 314 is electrically connected to the fifth radiating vibrator 312 and the fifth microstrip line 313, respectively.

The fourth vibrator 32 includes a sixth dielectric plate 321, a sixth radiating vibrator and a sixth microstrip line are etched on the sixth dielectric plate 321, the second feeding port 215 group further includes a sixth feeding port 322, and the sixth feeding port 322 is electrically connected with the sixth radiating vibrator and the sixth microstrip line, respectively; the fifth dielectric plate 311 and the sixth dielectric plate 321 are vertically disposed on the reflective plate 1, the fifth dielectric plate 311 is inserted in the middle of the sixth dielectric plate 321, and the fifth dielectric plate 311 and the sixth dielectric plate 321 are vertically disposed.

In the embodiment of the present application, the fifth dielectric plate 311 and the sixth dielectric plate 321 are connected to the reflection plate 1 by soldering, the fifth power supply port 314 and the sixth power supply port 322 are individually fed, the fifth power supply port 314 is fed to excite the fifth vibrator, and the sixth power supply port 322 is fed to excite the sixth vibrator.

Further, the third vibrator 31 and the fourth vibrator 32 have the same structure. Specifically, the structures of the fifth dielectric plate 311 and the sixth dielectric plate 321 are identical, the structures of the fifth radiating element 312 and the sixth radiating element, and the positions on the corresponding dielectric plates are identical, and the structures of the fifth microstrip line 313 and the sixth microstrip line, and the positions on the corresponding dielectric plates are identical. The third vibrator 31 has the same structure as the fourth vibrator 32 so that the pattern of the second radiation unit 3 is symmetrical, and the gain of the base station antenna is further improved.

Taking the third oscillator 31 as an example, the fifth radiating oscillator 312 is located on the first side of the fifth dielectric plate 311, and the second microstrip line is located on the second side of the fifth dielectric plate 311.

The middle parts of the fifth dielectric plate 311 and the sixth dielectric plate 321 are respectively provided with a clamping groove 315, taking the fifth dielectric plate 311 as an example, one side of the fifth dielectric plate 311 close to the reflecting plate 1 is a bottom surface, one side of the fifth dielectric plate 311 far away from the reflecting plate 1 is a top surface, the clamping grooves 315 only penetrate through the bottom surface of the fifth dielectric, and the sixth dielectric plate 321 is clamped in the clamping grooves 315 of the fifth dielectric plate 311.

In the implementation of the present application, the fifth dielectric plate 311 and the sixth dielectric plate 321 are both high-frequency plates RO4350B, the thickness of which is 0.76mm, and the relative dielectric constant of which is 3.48. The specific dimensions of the fifth dielectric sheet 311 and the sixth dielectric sheet 321 are 23mm by 0.76mm.

As shown in fig. 6 and 7, the fifth dielectric plate 311 has a T-shaped structure, and the outer contour of the fifth radiating element 312 is disposed along the edge of the fifth dielectric plate 311 to reduce the overall weight of the antenna, the fifth microstrip line 313 is located in the middle of the fifth dielectric plate 311, and the fifth microstrip line 313 extends to the bottom surface of the fifth dielectric plate 311 to be connected to the fifth feed port 314.

Further, the surrounding plate 4 has a first cross section arranged in parallel with the reflecting plate 1, the first cross section is a circle or a regular polygon, the surrounding plate 4 has a third center line arranged perpendicular to the reflecting plate 1, and the third center line is collinear with the first center line and the second center line.

The third center line of the coaming 4 is collinear with the first center line and the second center line, so as to reduce interference of the coaming 4 on the first radiation unit 2 and the second radiation unit 3, and make the patterns of the first radiation unit 2 and the second radiation unit 3 remain symmetrical.

In the embodiment of the application, the coaming 4 is of a cylindrical structure, and the plate is made of flexible metal material.

The reflection plate 1 intensively reflects electromagnetic waves to a specific direction, thereby enhancing the radiation effect of the antenna and increasing the receiving and transmitting distance of the antenna, and further improving the antenna gain; the reflecting plate 1 can also adjust the direction of signals, optimize the directivity of antennas and strengthen the transmission and receiving directions of signals; the reflecting plate 1 can also enhance the intensity of the received signal and improve the receiving effect; the reflection plate 1 can also reduce signal interference and improve the stability and reliability of signals.

In the present embodiment, the reflection plate 1 includes: the bearing part 11, the first warping part 12 and the second warping part 13 are integrally formed.

The first radiation unit 2 and the second radiation unit 3 are both arranged on the bearing part 11, i.e. the first radiation unit 2 and the second radiation unit 3 are arranged near the center of the reflecting plate 1.

The first warpage portion 12 is formed at a first end of the carrying portion 11, the first warpage portion 12 and the carrying portion 11 are disposed at an included angle, and a warpage height of the first warpage portion 12 is lower than a vertical height of the first radiation unit 2 and a vertical height of the second radiation unit 3, that is, the first warpage portion 12 does not block radiation transmission of the first radiation unit 2 and the second radiation unit 3.

The second warping portion 13 is formed at the second end of the bearing portion 11, the second warping portion 13 and the bearing portion 11 are disposed at an included angle, and the warping height of the second warping portion 13 is lower than the vertical height of the first radiation unit 2 and the vertical height of the second radiation unit 3, that is, the first warping portion 12 does not block radiation transmission of the first radiation unit 2 and the second radiation unit 3.

The arrangement of the first warpage portion 12 and the second warpage portion 13 strengthens the signal strengths of the first radiation unit 2 and the second radiation unit 3 on the basis of not affecting the signal transmission of the first radiation unit 2 and the second radiation unit 3.

Further, an included angle between the first warping portion 12 and the bearing portion 11 is an obtuse angle, and an included angle between the second warping portion 13 and the bearing portion 11 is an obtuse angle.

In the embodiment of the present application, the reflective plate 1 is made of an aluminum plate, the length and width dimensions of the first warpage portion 12 are 80mm x 80mm, the length and width dimensions of the first warpage portion 12 and the second warpage portion 13 are 40mm x 120mm, the included angle between the first warpage portion 12 and the carrying portion 11 is 175 °, and the included angle between the second warpage portion 13 and the carrying portion 11 is 175 °.

In the embodiment of the present application, the reflection plate 1 has a fourth center line passing through the bearing part 11 and perpendicular to the bearing part 11, the fourth center line being collinear with the first and second center lines. The carrier 11 has a horizontally arranged coordinate system, along which the third vibrator 31 of the second radiating element 3 is arranged in a 45 ° direction, and the fourth vibrator 32 of the second radiating element 3 is arranged in a-45 ° direction, i.e. the third vibrator 31 is a high frequency 45 ° polarized vibrator and the fourth vibrator 32 is a high frequency 45 ° polarized vibrator. The first vibrator 21 in the first radiation unit 2 is arranged in the direction of 45 ° of the coordinate system, the second vibrator 22 in the first radiation unit 2 is arranged in the direction of-45 ° of the coordinate system, i.e. the first vibrator 21 is a low frequency 45 ° polarized vibrator, and the second vibrator 22 is a high frequency 45 ° polarized vibrator.

It should be noted that 45 ° polarization is between vertical polarization and horizontal polarization. In some communications scenarios, a 45 ° polarization may provide better transmission performance than a vertical polarization or a horizontal polarization. For example, in signal transmission between high buildings, the antenna polarizations may be different from one another, and in this case, using 45 ° polarizations, multipath effects and signal attenuation may be reduced to some extent.

In the embodiment of the present application, as shown in fig. 8, the directional diagram of the first vibrator 21 is of a symmetrical structure, the directional diagram is stable in the frequency range of 1710MHz to 2165MHz, and the gain is above 6.5 dBi. As shown in fig. 9, the third vibrator 31 and the fourth vibrator 32 have patterns corresponding to each other, and the patterns are stable in the frequency range of 3300MHz to 3600MHz, and the gain is 20dBi or more.

Spatially relative terms, such as "above … …," "above … …," "upper surface on … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In addition to the foregoing, references in the specification to "one embodiment," "another embodiment," "an embodiment," etc., indicate that the particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the application, as generally described. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with any embodiment, it is intended that such feature, structure, or characteristic be implemented within the scope of the application.

In the foregoing embodiments, the descriptions of the embodiments are emphasized, and for parts of one embodiment that are not described in detail, reference may be made to related descriptions of other embodiments.

The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A dual-frequency dual-polarized common aperture base station antenna, comprising:

A reflection plate (1);

the first radiating unit (2) comprises a plurality of first vibrator groups, the first vibrator groups are vertically arranged on the reflecting plate (1), the first vibrator groups are surrounded to form a containing cavity, the first radiating unit (2) is provided with a first central line which is perpendicular to the reflecting plate (1), and a first feed port (214) group is arranged on one side of the first radiating unit (2) facing the reflecting plate (1);

The second radiating unit (3), the second radiating unit (3) is arranged independently of the first radiating unit (2), the second radiating unit (3) is located in the accommodating cavity, the second radiating unit (3) is provided with a second central line which is perpendicular to the reflecting plate (1), the second central line is collinear with the first central line, the second radiating unit (3) comprises a plurality of second vibrator groups, the second vibrator groups are vertically arranged on the reflecting plate (1), and a second feed port (215) group is arranged on one side, facing the reflecting plate (1), of the second radiating unit (3);

The coaming (4), coaming (4) with reflector plate (1) is connected, coaming (4) are located between first radiating element (2) and second radiating element (3).

2. The dual-frequency dual-polarized co-aperture base station antenna according to claim 1, wherein the vertical height of the first radiating element (2) is higher than the vertical height of the second radiating element (3), and the vertical height of the coaming (4) is smaller than the vertical height of the second radiating element (3).

3. Dual-frequency dual-polarized co-aperture base station antenna according to claim 1, characterized in that the first radiating element (2) comprises:

The first oscillator (21), the first oscillator (21) includes a first dielectric plate (211) and a second dielectric plate (216), the first dielectric plate (211) is opposite to the second dielectric plate (216), a first radiating oscillator (212) and a first microstrip line (213) are etched on the first dielectric plate (211), a second radiating oscillator and a second microstrip line are etched on the second dielectric plate (216), the first feed port (214) group includes a first feed port (214) and a second feed port (215), the first feed port (214) is arranged on the first dielectric plate (211), the first feed port (214) is electrically connected with the first radiating oscillator (212) and the first microstrip line (213) respectively, and the second feed port (215) is arranged on the second dielectric plate (216) and the second feed port (215) is electrically connected with the second radiating oscillator and the second microstrip line respectively;

The second oscillator (22), the second oscillator (22) includes a third dielectric plate (221) and a fourth dielectric plate (222), the third dielectric plate (221) is opposite to the fourth dielectric plate (222), a third radiating oscillator and a third microstrip line are etched on the third dielectric plate (221), a fourth radiating oscillator and a fourth microstrip line are etched on the fourth dielectric plate (222), the first feed port (214) group further includes a third feed port (223) and a fourth feed port (224), the third feed port (223) is arranged on the third dielectric plate (221), the third feed port (223) is electrically connected with the third radiating oscillator and the third microstrip line respectively, the fourth feed port (224) is arranged on the fourth dielectric plate (222), and the fourth feed port (224) is electrically connected with the fourth radiating oscillator and the fourth microstrip line respectively;

The first dielectric plate (211), the second dielectric plate (216), the third dielectric plate (221) and the fourth dielectric plate (222) are vertically arranged on the reflecting plate (1) and jointly enclose to form the accommodating cavity.

4. A dual-frequency dual-polarized co-aperture base station antenna according to claim 3, characterized in that the structure of the first element (21) is identical to the structure of the second element (22).

5. The dual-frequency dual-polarized co-aperture base station antenna according to claim 1, wherein each of the second element groups has a center line arranged perpendicular to the reflection plate (1), and each of the center lines is arranged collinearly.

6. Dual-frequency dual-polarized co-aperture base station antenna according to claim 1 or 5, characterized in that the second radiating element (3) comprises:

the third oscillator (31), the third oscillator (31) includes a fifth dielectric plate (311), a fifth radiation oscillator (312) and a fifth microstrip line (313) are etched on the fifth dielectric plate (311), the second feed port (215) group includes a fifth feed port (314), and the fifth feed port (314) is electrically connected with the fifth radiation oscillator (312) and the fifth microstrip line (313) respectively;

The fourth oscillator (32), the fourth oscillator (32) comprises a sixth dielectric plate (321), a sixth radiation oscillator and a sixth microstrip line are etched on the sixth dielectric plate (321), the second feed port (215) group further comprises a sixth feed port (322), and the sixth feed port (322) is electrically connected with the sixth radiation oscillator and the sixth microstrip line respectively;

The fifth dielectric plate (311) and the sixth dielectric plate (321) are vertically arranged on the reflecting plate (1), the fifth dielectric plate (311) is inserted in the middle of the sixth dielectric plate (321), and the fifth dielectric plate (311) and the sixth dielectric plate (321) are vertically arranged.

7. The dual-frequency dual-polarized co-aperture base station antenna according to claim 6, wherein the third element (31) and the fourth element (32) have the same structure.

8. The dual-frequency dual-polarized co-aperture base station antenna according to claim 1, wherein the coaming (4) has a first cross section arranged parallel to the reflecting plate (1), the first cross section being a circle or a regular polygon, the coaming (4) has a third center line arranged perpendicular to the reflecting plate (1), the third center line being collinear with the first center line and the second center line.

9. Dual-frequency dual-polarized co-aperture base station antenna according to claim 1, characterized in that the reflecting plate (1) comprises:

the bearing part (11), the first radiation unit (2) and the second radiation unit (3) are arranged on the bearing part (11);

A first warping portion (12), wherein the first warping portion (12) is formed at a first end of the bearing portion (11), the first warping portion (12) and the bearing portion (11) are arranged at an included angle, and the warping height of the first warping portion (12) is lower than the vertical height of the first radiation unit (2) and the vertical height of the second radiation unit (3);

the second warping part (13), the second warping part (13) is formed in the second end of the bearing part (11), the second warping part (13) and the bearing part (11) are arranged in an included angle, and the warping height of the second warping part (13) is lower than the vertical height of the first radiating unit (2) and the vertical height of the second radiating unit (3).

10. Dual-frequency dual-polarized co-aperture base station antenna according to claim 9, characterized in that the angle between the first warp part (12) and the carrier part (11) is an obtuse angle, and the angle between the second warp part (13) and the carrier part (11) is an obtuse angle.