A dual-frequency, dual-polarization, common-aperture base station antenna

Abstract

The present invention provides a dual-frequency, dual-polarization, common-aperture base station antenna, comprising: a reflector; a first radiating unit comprising a plurality of first dipole groups, the plurality of first dipole groups being vertically arranged on the reflector, the plurality of first dipole groups being surrounded to form a receiving cavity, the first radiating unit having a first centerline perpendicular to the reflector; a second radiating unit being located within the receiving cavity, the second radiating unit having a second centerline perpendicular to the reflector, the second centerline being collinear with the first centerline, the second radiating unit comprising a plurality of second dipole groups, the plurality of second dipole groups being vertically arranged on the reflector; and an enclosure connected to the reflector, the enclosure being arranged between the first radiating unit and the second radiating unit. The second radiating unit in the above scheme is nested inside the first radiating unit, has a compact and simple structure, and achieves dual-frequency performance using the physical space of a pair of antennas, saving space resources for mounting antennas on iron towers, while also saving antenna manufacturing costs and operation and maintenance costs.

Description

Technical Field

[0001] The present invention relates to the technical field of base station antennas, and in particular to a dual-frequency, dual-polarization, common-aperture base station antenna. Background Art

[0002] With the widespread commercialization of 5G and the convergence of 4G and 5G systems, tower space is becoming scarce. The operational and maintenance costs of independent antennas for multiple frequency bands are increasing, and the need for multi-band antennas to share physical space is intensifying. The multiple sub-6GHz bands are widely separated and the overall frequency range is relatively wide, making it difficult to design a single antenna to fully cover the sub-6GHz band.

[0003] Currently, antennas of different frequency bands are compactly arranged together, sharing a single physical aperture to form a single antenna. This compact arrangement of antennas of different frequency bands can cause coupling between the antennas, leading to impedance mismatch, poor standing wave ratio, and isolation. It can also cause pattern distortion, poor gain, and reduced antenna efficiency. Addressing the coupling issue by staggering antennas of different frequency bands or by adding special auxiliary structures such as magnetic rings and frequency-selective surfaces results in complex structures, larger dimensions, and increased manufacturing difficulty.

[0004] Currently, no effective solution has been proposed to the technical problems of large size and complex structure of the common aperture structure of the above-mentioned multi-band antenna. Summary of the Invention

[0005] The main purpose of the present invention is to provide a dual-frequency dual-polarization common aperture base station antenna to solve the technical problems of large size and complex structure of the common aperture structure of multi-band antennas.

[0006] In order to achieve the above-mentioned purpose, according to one aspect of the present invention, a dual-frequency dual-polarization co-aperture base station antenna is provided, comprising: a reflector; a first radiating unit, the first radiating unit comprising a plurality of first dipole groups, the plurality of first dipole groups being vertically arranged on the reflector, the plurality of first dipole groups being surrounded to form an accommodating cavity, the first radiating unit having a first center line arranged perpendicular to the reflector, and a first feeding port group being provided on a side of the first radiating unit facing the reflector; a second radiating unit, the second radiating unit being independently arranged from the first radiating unit, the second radiating unit being located in the accommodating cavity, the second radiating unit having a second center line arranged perpendicular to the reflector, the second center line being collinear with the first center line, the second radiating unit comprising a plurality of second dipole groups, the plurality of second dipole groups being vertically arranged on the reflector, and a second feeding port group being provided on a side of the second radiating unit facing the reflector; and a hoarding, the hoarding being connected to the reflector, and the hoarding being provided between the first radiating unit and the second radiating unit.

[0007] Furthermore, the vertical height of the first radiation unit is higher than the vertical height of the second radiation unit, and the vertical height of the enclosure is lower than the vertical height of the second radiation unit.

[0008] Furthermore, the first radiation unit includes: a first oscillator, the first oscillator includes a first dielectric plate and a second dielectric plate, the first dielectric plate and the second dielectric plate are arranged opposite to each other, the first dielectric plate is etched with a first radiation oscillator and a first microstrip line, the second dielectric plate is etched with a second radiation oscillator and a second microstrip line, the first feeding port group includes a first feeding port and a second feeding port, the first feeding port is provided on the first dielectric plate, the first feeding port is electrically connected to the first radiation oscillator and the first microstrip line respectively, the second feeding port is provided on the second dielectric plate, the second feeding port is electrically connected to the second radiation oscillator and the second microstrip line respectively; the second oscillator includes a third dielectric plate The reflector comprises a first dielectric plate and a second dielectric plate, the third dielectric plate and the fourth dielectric plate are arranged opposite to each other, the third dielectric plate is etched with a third radiating oscillator and a third microstrip line, the fourth dielectric plate is etched with a fourth radiating oscillator and a fourth microstrip line, the first feeding port group also includes a third feeding port and a fourth feeding port, the third feeding port is arranged on the third dielectric plate, the third feeding port is electrically connected to the third radiating oscillator and the third microstrip line respectively, the fourth feeding port is arranged on the fourth dielectric plate, the fourth feeding port is electrically connected to the fourth radiating oscillator and the fourth microstrip line respectively; the first dielectric plate, the second dielectric plate, the third dielectric plate and the fourth dielectric plate are all vertically arranged on the reflector, and together form an accommodating cavity.

[0009] Furthermore, the structure of the first vibrator is the same as that of the second vibrator.

[0010] Furthermore, each second vibrator group has a center line perpendicular to the reflector plate, and the center lines are collinearly arranged.

[0011] Furthermore, the second radiation unit includes: a third oscillator, the third oscillator includes a fifth dielectric plate, the fifth dielectric plate is etched with a fifth radiating oscillator and a fifth microstrip line, the second feeding port group includes a fifth feeding port, the fifth feeding port is electrically connected to the fifth radiating oscillator and the fifth microstrip line respectively; a fourth oscillator, the fourth oscillator includes a sixth dielectric plate, the sixth dielectric plate is etched with a sixth radiating oscillator and a sixth microstrip line, the second feeding port group also includes a sixth feeding port, the sixth feeding port is electrically connected to the sixth radiating oscillator and the sixth microstrip line respectively; the fifth dielectric plate and the sixth dielectric plate are both 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.

[0012] Furthermore, the third vibrator and the fourth vibrator have the same structure.

[0013] Furthermore, the enclosure has a first cross-section arranged parallel to the reflective plate, the first cross-section is circular or a regular polygon, and the enclosure has a third center line arranged perpendicular to the reflective plate, and the third center line is collinear with the first center line and the second center line.

[0014] Furthermore, the reflecting plate includes: a bearing portion, on which the first radiation unit and the second radiation unit are both arranged; a first warped portion, which is formed at the first end of the bearing portion, and is arranged at an angle to the bearing portion, and the warping height of the first warped portion is lower than the vertical height of the first radiation unit and the vertical height of the second radiation unit; a second warped portion, which is formed at the second end of the bearing portion, and is arranged at an angle to the bearing portion, and the warping height of the second warped portion is lower than the vertical height of the first radiation unit and the vertical height of the second radiation unit.

[0015] Furthermore, the included angle between the first warped portion and the bearing portion is an obtuse angle, and the included angle between the second warped portion and the bearing portion is an obtuse angle.

[0016] Furthermore, the reflective plate has a fourth center line, the fourth center line passes through the supporting portion and is perpendicular to the supporting portion, and the fourth center line is collinear with the first center line and the second center line.

[0017] By applying the technical solution of the present invention, the first radiation unit and the second radiation unit share a reflector to achieve a dual-frequency common aperture setting. The first plurality of dipole groups of the first radiation unit are vertically arranged on the reflector, and the first plurality of dipole groups are surrounded to form a receiving cavity. The second plurality of dipole groups of the second radiation unit are vertically arranged on the reflector, and the second radiation unit is located in the receiving cavity. The first center line of the first radiation unit is collinear with the second center line of the second radiation unit. Each radiation unit includes a plurality of dipole groups to achieve a dual-polarization setting. The enclosure is located between the first radiation unit and the second radiation unit to isolate the two radiation units to improve the isolation between the antennas. The second radiation unit in the above solution is nested inside the first radiation unit, with a compact and simple structure. The physical space of a pair of antennas is used to achieve dual-frequency performance, saving space resources for installing antennas on the tower, while also saving antenna manufacturing costs and operation and maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings, which constitute part of this application, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings:

[0019] Figure 1 A schematic structural diagram of an embodiment of a dual-frequency, dual-polarization, common-aperture base station antenna according to the present invention is shown;

[0020] Figure 2 shows a schematic top view of the first radiation unit in the present invention;

[0021] Figure 3 A schematic structural diagram of the outer side of the first dielectric plate in the present invention is shown;

[0022] Figure 4 A schematic structural diagram of the inner side of the first dielectric plate in the present invention is shown;

[0023] Figure 5 shows a schematic top view of the second radiation unit;

[0024] Figure 6 A schematic structural diagram of the outer side of the fifth dielectric plate in the present invention is shown;

[0025] Figure 7 A schematic structural diagram of the inner side of the fifth dielectric plate in the present invention is shown;

[0026] Figure 8 shows the directional pattern of the first vibrator in the present invention;

[0027] Figure 9 The directional diagram of the third vibrator in the present invention is shown.

[0028] The above drawings include the following reference numerals:

[0029] 1. Reflector; 11. Carrying portion; 12. First warping portion; 13. Second warping portion;

[0030] 2. First radiating element; 21. First radiator; 211. First dielectric plate; 212. First radiating radiator; 213. First microstrip line; 214. First feed port; 215. Second feed port; 216. Second dielectric plate; 22. Second radiator; 221. Third dielectric plate; 222. Fourth dielectric plate; 223. Third feed port; 224. Fourth feed port;

[0031] 3. Second radiating element; 31. Third oscillator; 311. Fifth dielectric plate; 312. Fifth radiating oscillator; 313. Fifth microstrip line; 314. Fifth feed port; 315. Card slot; 32. Fourth oscillator; 321. Sixth dielectric plate; 322. Sixth feed port;

[0032] 4. Hoarding. DETAILED DESCRIPTION

[0033] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0034] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0035] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way are interchangeable where appropriate, so that the embodiments of the present application described herein can, for example, be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0036] Now, exemplary embodiments according to the present application will be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in a variety of different forms and should not be interpreted as being limited to the embodiments described herein. It should be understood that these embodiments are provided to make the disclosure of this application thorough and complete, and to fully convey the concepts of these exemplary embodiments to those of ordinary skill in the art. In the accompanying drawings, for the sake of clarity, the thickness of layers and regions may be exaggerated, and the same reference numerals are used to represent the same devices, and thus their descriptions will be omitted.

[0037] Combine Figures 1 to 9 As shown, according to a specific embodiment of the present application, a dual-frequency dual-polarization common-aperture base station antenna is provided.

[0038] Specifically, if Figure 1As shown, the dual-frequency, dual-polarization, co-aperture base station antenna includes: a reflector 1, a first radiating element 2, a second radiating element 3, and a panel 4. The first radiating element 2 includes multiple first dipole groups, which are vertically mounted on the reflector 1 and surround a receiving cavity. The first radiating element 2 has a first centerline perpendicular to the reflector 1, and a first feed port 214 is provided on the side of the first radiating element 2 facing the reflector 1. The second radiating element 3 is independently mounted from the first radiating element 2 and located within the receiving cavity. The second radiating element 3 has a second centerline perpendicular to the reflector 1 and is collinear with the first centerline. The second radiating element 3 includes multiple second dipole groups, which are vertically mounted on the reflector 1, and a second feed port 215 is provided on the side of the second radiating element 3 facing the reflector 1. The panel 4 is connected to the reflector 1 and is disposed between the first radiating element 2 and the second radiating element 3.

[0039] By applying the technical solution of the present invention, the first radiating unit 2 and the second radiating unit 3 share a reflector 1 to achieve a dual-frequency co-aperture setting. The multiple first dipole groups of the first radiating unit 2 are vertically arranged on the reflector 1, and the multiple first dipole groups are surrounded to form a receiving cavity. The multiple second dipole groups of the second radiating unit 3 are vertically arranged on the reflector 1, and the second radiating unit 3 is located in the receiving cavity. The first center line of the first radiating unit 2 is collinear with the second center line of the second radiating unit 3. Each radiating unit includes multiple dipole groups to achieve a dual-polarization setting. The enclosure 4 is located between the first radiating unit 2 and the second radiating unit 3 to isolate the two radiating units to improve the isolation between the antennas. The second radiating unit 3 in the above solution is nested inside the first radiating unit 2, with a compact and simple structure. The dual-frequency performance is achieved with the physical space of a pair of antennas, saving space resources for installing antennas on the iron tower, while also saving antenna manufacturing costs and operation and maintenance costs.

[0040] In the embodiment of the present application, the first radiating element 2 covers the frequency band of 1710MHz to 2165MHz, that is, the first radiating element 2 is a low-frequency radiating element. Low-frequency radiating elements have longer wavelengths and require larger physical dimensions to accommodate longer wavelengths. The second radiating element 3 covers the frequency band of 3300MHz to 3600MHz, that is, the second radiating element 3 is a high-frequency radiating element. High-frequency radiating elements have shorter wavelengths and require smaller physical dimensions, so the structure of the high-frequency radiating element can be designed to be more compact.

[0041] It should be noted that the first radiation unit 2 and the second radiation unit 3 are independently provided, 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 both directly connected to the reflection plate 1 .

[0042] Furthermore, the vertical height of the first radiation unit 2 is higher than the vertical height of the second radiation unit 3 , and the vertical height of the enclosure 4 is lower than the vertical height of the second radiation unit 3 .

[0043] It should be noted that the overall height of the first radiating element 2 is higher than that of the second radiating element 3, thereby enhancing the signal strength of the second radiating element 3 and, in turn, the overall signal strength of the base station antenna. The height of the enclosure 4 is lower than that of the second radiating element 3, isolating the first radiating element 2 from the second radiating element 3 while minimizing the impact on the signal transmission of the second radiating element 3.

[0044] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 As shown, the first radiation unit 2 includes a first dipole 21 and a second dipole 22. Specifically, a plurality of first dipole groups include the first dipole 21 and the second dipole 22.

[0045] The first oscillator 21 includes a first dielectric plate 211 and a second dielectric plate 216. The first dielectric plate 211 and the second dielectric plate 216 are arranged opposite to each other. The first dielectric plate 211 is etched with a first radiating oscillator 212 and a first microstrip line 213, and the second dielectric plate 216 is etched with a second radiating oscillator and a second microstrip line. The first feeding port 214 group includes a first feeding port 214 and a second feeding port 215. The first feeding port 214 is arranged on the first dielectric plate 211 and is electrically connected to the first radiating oscillator 212 and the first microstrip line 213 respectively. The second feeding port 215 is arranged on the second dielectric plate 216 and is electrically connected to the second radiating oscillator and the second microstrip line respectively.

[0046] In the embodiment of the present application, the first dielectric plate 211 and the second dielectric plate 216 are arranged parallel and spaced apart. That is, the first dielectric plate 211 and the second dielectric plate 216 are both vertically connected to the reflector 1. Specifically, the first dielectric plate 211 and the second dielectric plate 216 are both connected to the reflector 1 by soldering. The first dielectric plate 211 and the second dielectric plate 216 have identical structures, the first radiating element 212 and the second radiating element have identical structures and positions on the corresponding dielectric plates, the first microstrip line 213 and the second microstrip line have identical structures and positions on the corresponding dielectric plates, and the first feed port 214 and the second feed port 215 simultaneously feed power to excite the first radiator 21.

[0047] The second oscillator 22 includes a third dielectric plate 221 and a fourth dielectric plate 222. The third dielectric plate 221 and the fourth dielectric plate 222 are arranged opposite to each other. The third dielectric plate 221 is etched with a third radiating oscillator and a third microstrip line, and the fourth dielectric plate 222 is etched with a fourth radiating oscillator and a fourth microstrip line. The first feeding port 214 group also includes a third feeding port 223 and a fourth feeding port 224. The third feeding port 223 is arranged on the third dielectric plate 221 and is electrically connected to the third radiating oscillator and the third microstrip line respectively. The fourth feeding port 224 is arranged on the fourth dielectric plate 222 and is electrically connected to the fourth radiating oscillator and the fourth microstrip line respectively.

[0048] In the embodiment of the present application, the third dielectric plate 221 and the fourth dielectric plate 222 are arranged in parallel and spaced apart. That is, the third dielectric plate 221 and the fourth dielectric plate 222 are both perpendicularly connected to the reflector 1. Specifically, the third dielectric plate 221 and the fourth dielectric plate 222 are both connected to the reflector 1 by soldering. The third dielectric plate 221 and the fourth dielectric plate 222 have identical structures, the third radiating element and the fourth radiating element have identical structures and positions on the corresponding dielectric plates, the third microstrip line and the fourth microstrip line have identical structures and positions on the corresponding dielectric plates, and the third feed port 223 and the fourth feed port 224 simultaneously feed power to excite the second radiator 22.

[0049] The first dielectric plate 211, the second dielectric plate 216, the third dielectric plate 221, and the fourth dielectric plate 222 are all vertically mounted on the reflector 1, collectively forming a receiving cavity. In this embodiment, the first vibrator 21 and the second vibrator 22 are vertically mounted, collectively forming a square structure with the center of the structure forming the receiving cavity.

[0050] It should be noted that, 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 closer to the first centerline is the inner side, and the side of the first dielectric plate 211 farther from the first centerline is the outer side. The first radiating element 212 is located on the outer side of the first dielectric plate 211, and the first microstrip line 213 is located on the inner side of the first dielectric plate 211. The second radiating element is located on the outer side of the second dielectric plate 216, and the second microstrip line is located on the inner side of the second dielectric plate 216. The third radiating element is located on the outer side of the third dielectric plate 221, and the third microstrip line is located on the inner side of the third dielectric plate 221. The fourth radiating element is located on the outer side of the fourth dielectric plate 222, and the fourth microstrip line is located on the inner side of the fourth dielectric plate 222.

[0051] Furthermore, the structure of the first oscillator 21 is identical to that of the second oscillator 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 oscillator 212, the second radiating oscillator, the third radiating oscillator, and the fourth radiating oscillator, as well as their positions on the corresponding dielectric plates, are identical. The structures of the first microstrip line 213, the second microstrip line, the third microstrip line, and the fourth microstrip line, as well as their positions on the corresponding dielectric plates, are identical. The structure of the first oscillator 21 is identical to that of the second oscillator 22, so that the directivity pattern of the first radiating unit 2 is symmetrical, further improving the gain of the base station antenna.

[0052] Furthermore, each second dipole group has a centerline perpendicular to the reflector 1, and the centerlines are collinear. The centerline of the second dipole group is collinear with the centerline of the second radiating element 3, i.e., the centerline of the second dipole group coincides with the second centerline, thereby making the structure of the second radiating element 3 more compact and further reducing the structural size of the base station antenna.

[0053] In 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 made of high-frequency RO4350B material, with a thickness of 0.76 mm and a relative dielectric constant of 3.48. The 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 45 mm * 32 mm * 0.76 mm.

[0054] like Figure 3 、 Figure 4 As shown, the structure of the first dielectric plate 211 is a T-shaped structure, the outer contour of the first radiating element 212 is set along the edge of the first dielectric plate 211 to reduce the overall weight of the antenna, and the first microstrip line 213 is located in the middle of the first dielectric plate 211. The first microstrip line 213 extends to the bottom surface of the first dielectric plate 211 to be connected to the first feeding port 214.

[0055] like Figure 1 、 Figure 5 、 Figure 6 、 Figure 7 As shown, the second radiation unit 3 includes: a third dipole 31 and a fourth dipole 32. Specifically, the plurality of second dipole groups include the third dipole 31 and the fourth dipole 32.

[0056] The third oscillator 31 includes a fifth dielectric plate 311 on which a fifth radiating oscillator 312 and a fifth microstrip line 313 are etched. The second feeding port 215 group includes a fifth feeding port 314 electrically connected to the fifth radiating oscillator 312 and the fifth microstrip line 313 respectively.

[0057] The fourth oscillator 32 includes a sixth dielectric plate 321, on which a sixth radiating oscillator and a sixth microstrip line are etched. The second feeding port 215 group also includes a sixth feeding port 322, which is electrically connected to the sixth radiating oscillator and the sixth microstrip line respectively; the fifth dielectric plate 311 and the sixth dielectric plate 321 are both vertically arranged on the reflector 1, and the fifth dielectric plate 311 is inserted in the middle of the sixth dielectric plate 321. The fifth dielectric plate 311 and the sixth dielectric plate 321 are arranged vertically.

[0058] In an embodiment of the present application, the fifth dielectric plate 311 and the sixth dielectric plate 321 are connected to the reflector 1 by soldering, and the fifth feeding port 314 and the sixth feeding port 322 are fed separately. The fifth feeding port 314 feeds power to excite the fifth oscillator, and the sixth feeding port 322 feeds power to excite the sixth oscillator.

[0059] Furthermore, the third and fourth radiators 31 and 32 have identical structures. Specifically, the fifth and sixth dielectric plates 311 and 321 have identical structures, the fifth and sixth radiators 312 and 313 have identical structures and positions on their respective dielectric plates, and the fifth and sixth microstrip lines 313 and 314 have identical structures and positions on their respective dielectric plates. The structure of the third and fourth radiators 31 and 32 is identical, ensuring symmetry in the directivity pattern of the second radiating element 3, further improving the gain of the base station antenna.

[0060] It should be noted that, taking the third oscillator 31 as an example, the fifth radiating oscillator 312 is located on the first side surface of the fifth dielectric plate 311 , and the second microstrip line is located on the second side surface of the fifth dielectric plate 311 .

[0061] Among them, a card slot 315 is provided in the middle of the fifth dielectric plate 311 and the sixth dielectric plate 321. Taking the fifth dielectric plate 311 as an example, the side of the fifth dielectric plate 311 close to the reflector 1 is the bottom surface, and the side of the fifth dielectric plate 311 away from the reflector 1 is the top surface. The card slot 315 only passes through the bottom surface of the fifth dielectric, and the sixth dielectric plate 321 is snapped into the card slot 315 of the fifth dielectric plate 311.

[0062] In the implementation of this application, the fifth dielectric plate 311 and the sixth dielectric plate 321 are both made of high-frequency RO4350B material, with a thickness of 0.76 mm and a relative dielectric constant of 3.48. The specific dimensions of the fifth dielectric plate 311 and the sixth dielectric plate 321 are 23 mm * 23 mm * 0.76 mm.

[0063] like Figure 6 、 Figure 7As shown, the structure of the fifth dielectric plate 311 is a T-shaped structure, the outer contour of the fifth radiating element 312 is set along the edge of the fifth dielectric plate 311 to reduce the overall weight of the antenna, and the fifth microstrip line 313 is located in the middle of the fifth dielectric plate 311. The fifth microstrip line 313 extends to the bottom surface of the fifth dielectric plate 311 to be connected to the fifth feeding port 314.

[0064] Furthermore, the enclosure 4 has a first cross-section arranged parallel to the reflective plate 1, the first cross-section is a circle or a regular polygon, and the enclosure 4 has a third center line arranged perpendicular to the reflective plate 1, and the third center line is collinear with the first center line and the second center line.

[0065] It should be noted that the third center line of the enclosure 4 is colinear with the first center line and the second center line, so as to reduce the interference of the enclosure 4 on the first radiation unit 2 and the second radiation unit 3, so that the radiation pattern of the first radiation unit 2 and the radiation pattern of the second radiation unit 3 remain symmetrical.

[0066] In the embodiment of the present application, the enclosure plate 4 is a columnar structure, and the plate is made of a flexible metal material.

[0067] It should be noted that the reflector 1 enhances the radiation effect of the antenna and increases the antenna's receiving and transmitting distance by concentrating and reflecting electromagnetic waves in a specific direction, thereby improving the antenna gain; the reflector 1 can also adjust the direction of the signal, optimize the antenna directivity, and strengthen the transmission and receiving direction of the signal; the reflector 1 can also enhance the received signal strength and improve the reception effect; the reflector 1 can also reduce signal interference and improve the stability and reliability of the signal.

[0068] In this embodiment, the reflector 1 includes a supporting portion 11 , a first warped portion 12 and a second warped portion 13 . The supporting portion 11 , the first warped portion 12 and the second warped portion 13 are an integrally formed structure.

[0069] The first radiation unit 2 and the second radiation unit 3 are both disposed on the supporting portion 11 , that is, the first radiation unit 2 and the second radiation unit 3 are disposed near the center of the reflection plate 1 .

[0070] The first warped portion 12 is formed at the first end of the bearing portion 11. The first warped portion 12 is arranged at an angle to the bearing portion 11. The warping height of the first warped portion 12 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 warped portion 12 does not block the radiation transmission of the first radiation unit 2 and the second radiation unit 3.

[0071] The second warped portion 13 is formed at the second end of the bearing portion 11. The second warped portion 13 is arranged at an angle to the bearing portion 11. The warping height of the second warped 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 warped portion 12 does not block the radiation transmission of the first radiation unit 2 and the second radiation unit 3.

[0072] The arrangement of the first warped portion 12 and the second warped portion 13 enhances the signal strength of the first radiating unit 2 and the second radiating unit 3 without affecting the signal transmission of the first radiating unit 2 and the second radiating unit 3 .

[0073] Furthermore, the included angle between the first warped portion 12 and the supporting portion 11 is an obtuse angle, and the included angle between the second warped portion 13 and the supporting portion 11 is also an obtuse angle.

[0074] In an embodiment of the present application, the reflective plate 1 is made of an aluminum plate, the length and width of the first warped portion 12 are 80mm*80mm, the length and width of the first warped portion 12 and the second warped portion 13 are both 40mm*120mm, the angle between the first warped portion 12 and the supporting portion 11 is 175°, and the angle between the second warped portion 13 and the supporting portion 11 is 175°.

[0075] In an embodiment of the present application, the reflector 1 has a fourth centerline, which passes through the supporting portion 11 and is perpendicular to the supporting portion 11, and is collinear with the first centerline and the second centerline. The supporting portion 11 has a horizontally arranged coordinate system, the third oscillator 31 in the second radiating unit 3 is arranged along a 45° direction of the coordinate system, and the fourth oscillator 32 in the second radiating unit 3 is arranged along a -45° direction of the coordinate system, that is, the third oscillator 31 is a high-frequency 45° polarized oscillator, and the fourth oscillator 32 is a high-frequency 45° polarized oscillator. The first oscillator 21 in the first radiating unit 2 is arranged along a 45° direction of the coordinate system, and the second oscillator 22 in the first radiating unit 2 is arranged along a -45° direction of the coordinate system, that is, the first oscillator 21 is a low-frequency 45° polarized oscillator, and the second oscillator 22 is a high-frequency 45° polarized oscillator.

[0076] It's important to note that 45° polarization is between vertical and horizontal polarization. In some communication scenarios, 45° polarization can provide better transmission performance than either vertical or horizontal polarization. For example, when transmitting signals between tall buildings, where antenna polarization may differ, using 45° polarization can reduce multipath effects and signal attenuation to a certain extent.

[0077] In the embodiments of the present application, Figure 8 As shown, the directional pattern of the first oscillator 21 is a symmetrical structure, and the directional pattern is stable within the frequency range of 1710MHz to 2165MHz, and the gain is above 6.5dBi. Figure 9As shown, the directivity patterns of the third oscillator 31 and the fourth oscillator 32 are corresponding structures, and the directivity patterns are stable within the frequency range of 3300MHz to 3600MHz, and the gain is above 20dBi.

[0078] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0079] In addition to the above, it should be noted that references to "one embodiment," "another embodiment," "an embodiment," and the like in this specification refer to specific features, structures, or characteristics described in conjunction with that embodiment as included in at least one embodiment generally described in this application. The appearance of the same expression in multiple places in the specification does not necessarily refer to the same embodiment. Furthermore, when a specific feature, structure, or characteristic is described in conjunction with any embodiment, it is intended that such feature, structure, or characteristic, when implemented in conjunction with other embodiments, also falls within the scope of the present invention.

[0080] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0081] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A dual-frequency, dual-polarization, common-aperture base station antenna, characterized in that: include: Reflector (1); A first radiation unit (2), the first radiation unit (2) comprising a plurality of first dipole groups, the plurality of first dipole groups being vertically arranged on the reflection plate (1), the plurality of first dipole groups being arranged to form a receiving cavity, the first radiation unit (2) having a first center line arranged perpendicular to the reflection plate (1), and a first feed port (214) group being provided on a side of the first radiation unit (2) facing the reflection plate (1); a second radiation unit (3), the second radiation unit (3) being independently arranged from the first radiation unit (2), the second radiation unit (3) being located in the accommodating cavity, the second radiation unit (3) having a second center line arranged perpendicular to the reflector plate (1), the second center line being collinear with the first center line, the second radiation unit (3) comprising a plurality of second oscillator groups, the plurality of second oscillator groups being vertically arranged on the reflector plate (1), and a second feeding port (215) group being provided on a side of the second radiation unit (3) facing the reflector plate (1); A panel (4), the panel (4) being connected to the reflective plate (1), and the panel (4) being arranged between the first radiation unit (2) and the second radiation unit (3); The vertical height of the first radiation unit (2) is higher than the vertical height of the second radiation unit (3), and the vertical height of the enclosure (4) is lower than the vertical height of the second radiation unit (3); The reflective plate (1) comprises: A carrying portion (11), wherein the first radiation unit (2) and the second radiation unit (3) are both arranged on the carrying portion (11); a first warped portion (12), the first warped portion (12) being formed at a first end of the bearing portion (11), the first warped portion (12) being arranged at an angle to the bearing portion (11), and a warping height of the first warped portion (12) being lower than a vertical height of the first radiation unit (2) and a vertical height of the second radiation unit (3); A second warped portion (13), the second warped portion (13) being formed at a second end of the bearing portion (11), the second warped portion (13) being arranged at an angle to the bearing portion (11), and a warping height of the second warped portion (13) being lower than a vertical height of the first radiation unit (2) and a vertical height of the second radiation unit (3).

2. The dual-frequency dual-polarization common-aperture base station antenna according to claim 1, characterized in that: The first radiation unit (2) comprises: A first oscillator (21), the first oscillator (21) comprising a first dielectric plate (211) and a second dielectric plate (216), the first dielectric plate (211) and the second dielectric plate (216) being arranged opposite to each other, a first radiating oscillator (212) and a first microstrip line (213) being etched on the first dielectric plate (211), a second radiating oscillator and a second microstrip line being etched on the second dielectric plate (216), the first feeding port (214) group comprising a first feeding port (214) and a second feeding port (215), the first feeding port (214) being arranged on the first dielectric plate (211), the first feeding port (214) being electrically connected to the first radiating oscillator (212) and the first microstrip line (213), respectively, the second feeding port (215) being arranged on the second dielectric plate (216), the second feeding port (215) being electrically connected to the second radiating oscillator and the second microstrip line, respectively; a second oscillator (22), the second oscillator (22) comprising a third dielectric plate (221) and a fourth dielectric plate (222), the third dielectric plate (221) being arranged opposite to the fourth dielectric plate (222), the third dielectric plate (221) being etched with a third radiation oscillator and a third microstrip line, the fourth dielectric plate (222) being etched with a fourth radiation oscillator and a fourth microstrip line, the first feed port (214) group further comprising a third feed port (223) and a fourth feed port (224), the third feed port (223) being arranged on the third dielectric plate (221), the third feed port (223) being electrically connected to the third radiation oscillator and the third microstrip line respectively, the fourth feed port (224) being arranged on the fourth dielectric plate (222), the fourth feed port (224) being electrically connected to the fourth radiation 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 all vertically arranged on the reflective plate (1) and together enclose the accommodating cavity.

3. The dual-frequency, dual-polarization, common-aperture base station antenna according to claim 2, characterized in that: The structure of the first vibrator (21) is the same as that of the second vibrator (22).

4. The dual-frequency dual-polarization common-aperture base station antenna according to claim 1, characterized in that: Each of the second vibrator groups has a center line arranged perpendicular to the reflector plate (1), and each of the center lines is arranged collinearly.

5. The dual-frequency dual-polarization common-aperture base station antenna according to claim 1 or 4, characterized in that: The second radiation unit (3) comprises: a third oscillator (31), the third oscillator (31) comprising a fifth dielectric plate (311), a fifth radiating oscillator (312) and a fifth microstrip line (313) being etched on the fifth dielectric plate (311), the second feed port (215) group comprising a fifth feed port (314), the fifth feed port (314) being electrically connected to the fifth radiating oscillator (312) and the fifth microstrip line (313), respectively; A fourth oscillator (32), the fourth oscillator (32) comprising a sixth dielectric plate (321), a sixth radiating oscillator and a sixth microstrip line being etched on the sixth dielectric plate (321), the second feed port (215) group further comprising a sixth feed port (322), the sixth feed port (322) being electrically connected to the sixth radiating oscillator and the sixth microstrip line, respectively; The fifth dielectric plate (311) and the sixth dielectric plate (321) are both vertically arranged on the reflective plate (1), the fifth dielectric plate (311) is inserted into the middle of the sixth dielectric plate (321), and the fifth dielectric plate (311) and the sixth dielectric plate (321) are arranged vertically.

6. The dual-frequency dual-polarization common-aperture base station antenna according to claim 5, characterized in that: The third vibrator (31) and the fourth vibrator (32) have the same structure.

7. The dual-frequency dual-polarization common-aperture base station antenna according to claim 1, characterized in that: The enclosure (4) has a first cross-section arranged parallel to the reflective plate (1), the first cross-section is a circle or a regular polygon, and the enclosure (4) has a third centerline arranged perpendicular to the reflective plate (1), the third centerline being collinear with the first centerline and the second centerline.

8. The dual-frequency dual-polarization common-aperture base station antenna according to claim 1, characterized in that: The included angle between the first warped portion (12) and the bearing portion (11) is an obtuse angle, and the included angle between the second warped portion (13) and the bearing portion (11) is an obtuse angle.

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