Ultra-wideband dual-polarization radiating unit, antenna and antenna array

Abstract

The present application relates to the technical field of communication antennas, and the present application provides an ultra-wideband dual-polarization radiation unit, an antenna, and an antenna array. The ultra-wideband dual-polarization radiation unit provided in the present application includes: a radiation oscillator plate, a low-frequency parasitic radiation plate, and a high-frequency parasitic radiation plate arranged in parallel; the radiation oscillator plate is located between the low-frequency parasitic radiation plate and the high-frequency parasitic radiation plate; the radiation oscillator plate includes: a dielectric plate, two dipoles with mutually orthogonal polarization directions, and a feeding line; wherein the dipole is arranged on one side of the dielectric plate, and the feeding line is arranged on the other side of the dielectric plate and is electrically connected to the dipole; the low-frequency parasitic radiation plate and the high-frequency parasitic radiation plate are respectively provided with metal lines for inducing low-frequency electromagnetic waves and high-frequency electromagnetic waves. The solution provided in the present application can realize the ultra-wideband radiation function based on a simple structure.

Description

Technical Field

[0001] The present application relates to the technical field of communication antennas, and in particular to an ultra-wideband dual-polarization radiation unit, an ultra-wideband dual-polarization antenna, and an ultra-wideband dual-polarization antenna array. Background Art

[0002] 5G (fifth generation mobile communication) network has the characteristics of ultra-high speed, ultra-low latency, large capacity, etc., which are inseparable from the use of ultra-large-scale antenna arrays (English name: Massive MIMO) at the 5G base station end. The use of large-scale antenna array systems requires that the radiation units must be miniaturized, broadband, and simplified. A new type of antenna radiation unit with a simple structure, low cost, and wide bandwidth and a large-scale antenna array composed of it are needed.

[0003] At present, the antenna radiation units generally used in 5G Massive MIMO are mainly microstrip patch and symmetrical half-wave dipole. Narrow bandwidth is precisely the main disadvantage of microstrip patch antenna. Theoretically, the relative bandwidth of microstrip antenna is 1%. Through the efforts of designers, the bandwidth of microstrip patch antenna can be 10%. If the half-wave dipole solution is to be designed as broadband, the dipole design is very complicated and the size is also large. Both solutions can only meet a certain frequency band of 5G. Therefore, the current antenna array design cannot simultaneously meet the requirements of simple structure and ultra-wide radiation band of the working frequency band. Summary of the invention

[0004] In view of the technical problem that the above-mentioned antenna radiation unit design scheme cannot simultaneously meet the requirements of simple structure and ultra-wide radiation frequency band, the present application provides an ultra-wideband dual-polarization radiation unit, an ultra-wideband dual-polarization antenna and an ultra-wideband dual-polarization antenna array.

[0005] In a first aspect, the ultra-wideband dual-polarization radiation unit provided by the present application includes:

[0006] A radiation oscillator plate, a low-frequency parasitic radiation plate and a high-frequency parasitic radiation plate are arranged in parallel; the radiation oscillator plate is located between the low-frequency parasitic radiation plate and the high-frequency parasitic radiation plate;

[0007] The radiation oscillator plate comprises: a dielectric plate, two dipoles with mutually orthogonal polarization directions and a feeding line; wherein the dipole is arranged on one side of the dielectric plate, and the feeding line is arranged on the other side of the dielectric plate and is electrically connected to the dipole;

[0008] The low-frequency parasitic radiation plate and the high-frequency parasitic radiation plate are respectively provided with metal lines for inducing low-frequency electromagnetic waves and high-frequency electromagnetic waves; the metal lines are used to obtain corresponding induced currents according to the coupling of electromagnetic waves in corresponding frequency bands, and the electromagnetic waves in corresponding frequency bands generated by the induced currents are radiated into space.

[0009] In an optional embodiment of the first aspect, the ultra-wideband dual-polarization radiation unit is characterized by further comprising: a feed balun;

[0010] The feeding balun is used to support the radiation oscillator plate and feed it.

[0011] In an optional embodiment of the first aspect, each of the dipoles includes a first radiation dipole arm and a second radiation dipole arm that are arranged opposite to each other;

[0012] The feeding balun includes two groups of balun structures, each group of the balun structures includes a coaxial cable and a metal column, and the coaxial cable and the metal column are respectively connected to the first radiation dipole arm and the second radiation dipole arm.

[0013] In an optional embodiment of the first aspect, the feed circuit includes two orthogonally arranged feed sub-circuits, each feed sub-circuit corresponding to each group of the balun structures;

[0014] Each of the feeder subcircuits comprises a first end and a second end;

[0015] The first end overlaps with the first radiation dipole arm, and the corresponding overlapping area is close to the center position of the corresponding dipole; the second end overlaps with the second radiation dipole arm, and the corresponding overlapping area is the area on both sides of the center line of the second radiation dipole arm passing through the first radiation dipole arm and the second radiation dipole arm.

[0016] In an optional embodiment of the first aspect, a circular hole is provided in each of the first radiation dipole arm and the second radiation dipole arm, and a size of the circular hole is set according to a selected operating frequency.

[0017] In an optional embodiment of the first aspect, a metal via is provided in a region where the first radiation dipole arm overlaps with the first end;

[0018] The outer conductor of the coaxial cable is welded to the area of ​​the first radiation dipole arm overlapping the first end;

[0019] The inner conductor of the coaxial cable is passed through the metal via hole and is welded to the first end portion through the metal via hole.

[0020] In an optional embodiment of the first aspect, the two orthogonally arranged feeder subcircuits are respectively a first feeder subcircuits and a second feeder subcircuits;

[0021] The first feeder circuit is arranged on a surface of the dielectric plate, two avoidance metal holes are arranged at the intersection of the second feeder circuit and the first feeder circuit, the two avoidance metal holes penetrate the dielectric plate, and the second feeder circuit is transmitted along the two avoidance metal holes.

[0022] In an optional embodiment of the first aspect, the ultra-wideband dual-polarization radiation unit further includes: a fixing block disposed below the low-frequency parasitic radiation plate;

[0023] The fixing block fixes the coaxial cable and the metal column.

[0024] In an optional embodiment of the first aspect, the metal circuit provided on the low-frequency parasitic radiation plate is a first metal circuit, and the first metal circuit is a closed loop;

[0025] The range of the circumference of the first metal line is: an integer multiple of the wavelength of the low-frequency electromagnetic wave of 1 / 4 of the working frequency band of the dual-polarization radiation unit.

[0026] In an optional embodiment of the first aspect, the metal circuit provided on the high-frequency parasitic radiation plate is a second metal circuit, and the second metal circuit is four circular metal circuits;

[0027] Each of the circular metal lines is directly opposite to the circular hole of the corresponding radiation dipole arm, and the circumference of each circular metal line is in the range of an integer multiple of 1 / 4 of the wavelength of the high-frequency electromagnetic wave in the working frequency band of the dual-polarization radiation unit.

[0028] In an optional embodiment of the first aspect, the low-frequency parasitic radiation plate and the high-frequency parasitic radiation plate are fixedly connected to the radiation oscillator plate via plastic columns located at their four corner areas.

[0029] In a second aspect, the ultra-wideband dual-polarization antenna provided by the present application includes:

[0030] An ultra-wideband dual-polarization radiation unit as described in any one of the above embodiments, and a reflection plate on which the ultra-wideband dual-polarization radiation unit is installed; a partition is arranged at the edge of the reflection plate.

[0031] In a third aspect, the ultra-wideband dual-polarization antenna array provided in the present application includes:

[0032] Several ultra-wideband dual-polarization radiation units described in any one of the above embodiments, and reflective plates on which the ultra-wideband dual-polarization radiation units are installed;

[0033] A partition is arranged at the edge of the reflection plate, and a partition is arranged between each of the ultra-wideband dual-polarization radiation units.

[0034] The present application provides an ultra-wideband dual-polarization radiation unit, an ultra-wideband dual-polarization antenna, and an ultra-wideband dual-polarization antenna array, which have the following beneficial effects:

[0035] The ultra-wideband dual-polarization radiation unit, ultra-wideband dual-polarization antenna and ultra-wideband dual-polarization antenna array provided in the present application can use parallel arranged radiation oscillator plates, low-frequency parasitic radiation plates and high-frequency parasitic radiation plates as radiation bodies, and radiate low-frequency band electromagnetic waves and high-frequency band electromagnetic waves into space through resonant excitation according to radio frequency signals. The ultra-wideband radiation function can be realized with a simple structure, greatly expanding the working bandwidth of the radiation unit.

[0036] Additional aspects and advantages of the present application will be partially given in the following description, which will become obvious from the following description, or will be learned through practice. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The above and / or additional aspects and advantages will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0038] Figure 1 A three-dimensional schematic diagram of an ultra-wideband dual-polarization radiation unit provided by an embodiment of the present application;

[0039] Figure 2 A schematic diagram of a radiation oscillator plate provided in one embodiment of the present application;

[0040] Figure 3 is a schematic diagram of a feeding circuit on the upper side of a radiation oscillator plate provided by an embodiment of the present application;

[0041] Figure 4 is a schematic diagram of the positional relationship between the avoidance metal hole and the radiation dipole arm provided by an embodiment of the present application;

[0042] Figure 5 is a schematic diagram of a low-frequency parasitic radiation plate provided by an embodiment of the present application;

[0043] Figure 6 is a schematic diagram of a high-frequency parasitic radiation plate provided by an embodiment of the present application;

[0044] Figure 7 This is an isolation test diagram of an ultra-wideband dual-polarization radiating antenna provided by an embodiment of the present application;

[0045] Figure 8 This is a standing wave ratio test diagram of an ultra-wideband dual-polarization radiating antenna provided by an embodiment of the present application;

[0046] Fig. 9 is a test diagram of the radiation pattern of the ultra-wideband dual-polarization radiating antenna provided by an embodiment of the present application;

[0047] Fig.10 is a three-dimensional schematic diagram of an ultra-wideband dual-polarization antenna provided by an embodiment of the present application;

[0048] Fig.11 It is a three-dimensional schematic diagram of an ultra-wideband dual-polarization antenna array provided by an embodiment of the present application. DETAILED DESCRIPTION

[0049] The present application will be further described below in conjunction with the accompanying drawings and exemplary embodiments, wherein the same reference numerals in the accompanying drawings all refer to the same components. In addition, if the detailed description of the known technology is not necessary for illustrating the features of the present application, it will be omitted.

[0050] Reference Figure 1 , 2 , Figure 1 A three-dimensional schematic diagram of an ultra-wideband dual-polarization radiation unit provided by an embodiment of the present application; Figure 2 A schematic diagram of a radiation oscillator plate provided in accordance with an embodiment of the present application.

[0051] The ultra-wideband dual-polarization radiation unit 10 provided in the embodiment of the present application includes a radiation oscillator plate 100, a low-frequency parasitic radiation plate 200 and a high-frequency parasitic radiation plate 300, which are parallel to each other. Among them, the radiation oscillator plate 100 is located between the low-frequency parasitic radiation plate 200 and the high-frequency parasitic radiation plate 300. In this embodiment, the low-frequency parasitic radiation plate 200 and the high-frequency parasitic radiation plate 300 can be fixedly connected to the radiation oscillator plate 100 by installing plastic columns 500 through the mounting holes located at their four corners. Among them, the distance between the low-frequency parasitic radiation plate 200 and the radiation oscillator plate 100, and the distance between the high-frequency parasitic radiation plate 300 and the radiation oscillator plate 100 can be adjusted separately according to the radiation parameter requirements.

[0052] The radiation oscillator plate 100 uses a dielectric plate 101 as a substrate. In this embodiment, the dielectric plate 101 is a PCB board. A dipole 120 and a feed line 110 are respectively arranged on two sides of the dielectric plate 101. The dipole 120 is arranged on the dielectric plate 101, and the polarization directions of the two dipoles 120 are orthogonal to each other. The feed line 110 corresponds to the two dipoles 120.

[0053] For a clearer description, in the following description, the side of the radiation oscillator plate 100 where the feed line 110 is disposed is defined as the upper side, and the side where the dipole 120 is disposed is defined as the lower side. Figure 2In the schematic diagram of the embodiment shown, the side where the feeder line 110 is located is the front side of the schematic diagram, and the feeder line 110 is represented by a solid line; the side where the dipole 120 is located is the reverse side of the schematic diagram, and the dipole 120 is represented by a dotted line.

[0054] In addition, the low-frequency parasitic radiation plate 200 is arranged below the radiation oscillator plate 100, and the high-frequency parasitic radiation plate 300 is arranged above the radiation oscillator plate 100. When the feed line 110 receives the radio frequency signal, the dipole 120 generates and radiates ultra-wideband electromagnetic waves to the space, and the ultra-wideband electromagnetic waves include high-frequency electromagnetic waves and low-frequency electromagnetic waves. The low-frequency electromagnetic waves can cause the metal line of the low-frequency parasitic radiation plate 200 to generate low-frequency induced currents through resonance. The low-frequency induced currents cause the metal line of the low-frequency parasitic radiation plate 200 to generate low-frequency band electromagnetic waves and radiate them to the space.

[0055] In addition, the high-frequency electromagnetic wave can generate a high-frequency induced current in the metal line of the high-frequency parasitic radiation plate 300 through resonance. The high-frequency induced current causes the metal line of the high-frequency parasitic radiation plate 300 to generate a high-frequency band electromagnetic wave and radiate it into space.

[0056] The ultra-wideband dual-polarization radiation unit 10 provided in the embodiment of the present application can simultaneously generate low-frequency band electromagnetic waves and high-frequency band electromagnetic waves with a simple antenna radiation unit design structure, and radiate ultra-wideband electromagnetic waves into space, which helps to achieve the requirements of miniaturization, broadband and simple design of the antenna.

[0057] In this embodiment, the ultra-wideband dual-polarization radiation unit 10 further includes a feeding balun 400. The feeding balun 400 is connected to the radiation oscillator plate 100 and is used to support and feed power to the radiation oscillator plate 100. Figure 1 The feeding balun 400 extends from below the low-frequency parasitic radiation plate 200 to the radiation oscillator plate 100. In this embodiment, the feeding balun 400 includes two groups of balun structures, each group of balun structures includes coaxial cables (410, 420) and metal pillars (430, 440). One group of coaxial cables (410 or 420) and metal pillars (430 or 440) are respectively connected to two oppositely arranged radiation oscillator arms (121, 122) of a dipole 120.

[0058] The feed circuit 110 includes two feed sub-circuits which are arranged orthogonally to each other. Each feed sub-circuit corresponds to each group of balun structures.

[0059] In this embodiment, each dipole 120 includes a first radiation dipole arm 121 and a second radiation dipole arm 122 that are arranged opposite to each other. Each feeder circuit includes a first end 113 and a second end 115, wherein the first end 113 corresponds to the first radiation dipole arm 121, and the second end 115 corresponds to the second radiation dipole arm 122. The feeder circuit and the corresponding dipole 120 are respectively located on two sides of the dielectric plate 101. In this embodiment, there is an overlapping area between the first end 113 and the first radiation dipole arm 121, and the overlapping area is close to the center position of the corresponding dipole 120. There is also an overlapping area between the second end 115 and the second radiation dipole arm 122, and the corresponding vertical area is the area on both sides of the center line of the second radiation dipole arm 122 and passing through the first radiation dipole arm 121 and the second radiation dipole arm 122.

[0060] In this embodiment, the first radiation dipole arm 121 and the second radiation dipole arm 122 both have a circular hole 123, and the size of the circular hole 123 is set according to the selected working frequency. Therefore, the first radiation dipole arm 121 and the second radiation dipole arm 122 are both in a circular ring shape.

[0061] Correspondingly, the overlapping area between the first end 113 and the first radiation dipole arm 121 is the circular area of ​​the first radiation dipole arm 121 close to the center of the dipole 120, such as Figure 2 The overlapping area between the second end 115 and the second radiation dipole arm 122 is the semicircular area on both sides of the center line passing through the first radiation dipole arm 121 and the second radiation dipole arm 122, such as Figure 2 At points B and C in .

[0062] Reference Figure 3 and 4 , Figure 3 is a schematic diagram of a feeding circuit on the upper side of a radiation oscillator plate provided by an embodiment of the present application; Figure 4 It is a schematic diagram of the positional relationship between the avoidance metal hole and the radiation dipole arm provided by an embodiment of the present application.

[0063] A metal via 114 is provided at point A shown in the figure. The metal via 114 passes through the first radiation dipole arm 121, the dielectric plate 101 and the first end 113. The outer conductor of the coaxial cable is welded to the position corresponding to point A on the first radiation dipole arm 121. The inner conductor thereof is passed through the metal via 114 and welded to point A of the first end 113. In the present embodiment, the feeder circuit at point A is defined as the first feeder circuit 111. The radio frequency signal is transmitted to point A of the first feeder circuit 111 through the coaxial cable 410, and is transmitted to the second end 115 through the circuit. Since there is an overlapping area between the second end 115 and the areas on both sides of the second radiation dipole arm 122, the radio frequency signal can be coupled to the second radiation dipole arm 122 overlapping therewith through the second end 115. A metal column 430 is fixedly connected to the surface of the second radiation dipole arm 122. The connection position of the metal column 430 is close to the area at the center of the corresponding dipole 120, in Figure 4 In the figure, the connection between the metal column 430 and the second radiation dipole arm 122 is located at point D. The metal column 430 and the coaxial cable 410 connected to the first radiation dipole arm 121 constituting the same dipole 120 form a set of balun structures. The position of the metal via 114 at the connection between the metal column 430 and the second radiation dipole arm 122 and the position of point D at the connection between the coaxial cable 410 and the first radiation dipole arm 121 are symmetrical about the intersection of the two first feeder circuits 121 and the second feeder circuits 122.

[0064] Furthermore, the radiation oscillator plate 100 is supported and fed by a feeding balun 400 including two groups of balun structures. Figure 3 In addition to the first feeder circuit 111 mentioned above, the feeder circuit 110 also includes a second feeder circuit 112. The first feeder circuit 111 and the second feeder circuit 112 are arranged orthogonally. The first feeder circuit 111 is completely arranged on the upper side of the dielectric plate 101, and the second feeder circuit 112 is provided with two avoidance metal holes 117 at the intersection with the first feeder circuit 111. The two avoidance metal holes 117 are located on both sides of the first feeder circuit 111, and respectively penetrate the second feeder circuit 112, the dielectric plate 101 and the first radiation dipole arm 121 of the corresponding dipole 120, and penetrate the second feeder circuit 112, the dielectric plate 101 and the second radiation dipole arm 122 of the corresponding dipole 120. Refer to Figure 4 The second feeder circuit 112 passes through the two avoidance metal holes 117 to the side of the dielectric plate 101 where the corresponding dipole 120 is set, avoiding the first feeder circuit 111, so that the first feeder circuit 111 and the second feeder circuit 112 are not easily contacted, thereby avoiding the occurrence of a short circuit.

[0065] The radiation arms of the mutually orthogonal dipoles 120 generate mutually orthogonal polarized electromagnetic waves under the coupling effect of the first feeder circuit 111 and the second feeder circuit 112 .

[0066] Reference Figure 3 Each feeder circuit is a Y-shaped structure, and the second end 115 is a V-shaped structure, and the two forked portions 116 of the second end 115 overlap with the corresponding second radiation dipole arm 122. The second end 115 can also be a straight-line structure, a circular structure, or a square structure, and its two ends overlap with the corresponding second radiation dipole arm 122, so as to couple the radio frequency signal to the corresponding second radiation dipole arm 122.

[0067] The ultra-wideband dual-polarization radiation unit 10 provided in this embodiment further includes a fixing block 600 located below the low-frequency parasitic radiation plate 200, and the fixing block 600 is used to fix each coaxial cable (410, 420) and metal pillar (430, 440) in the feed balun 400. In this embodiment, the material of the fixing block 600 is a metal structure.

[0068] Reference Figure 5 , Figure 5 It is a schematic diagram of a low-frequency parasitic radiation plate provided in one embodiment of the present application.

[0069] In this embodiment, the metal line on the low-frequency parasitic radiation plate 200 is defined as a first metal line 210. The first metal line 210 is a closed loop, and the circumference of the first metal line 210 is equivalent to the low-frequency electromagnetic wave. In this embodiment, it is a low-frequency electromagnetic wave that is approximately an integer multiple of 1 / 4 of the wavelength of the low-frequency electromagnetic wave. When the electromagnetic wave generated by the dipole 120 is radiated into space, the first metal line 210 can resonate according to the low-frequency electromagnetic wave radiated by the dipole 120, and generate a corresponding low-frequency induced current in the first metal line 210. The first metal line 210 can generate a corresponding low-frequency band electromagnetic wave under the action of the low-frequency induced current and radiate it into space.

[0070] In this embodiment, a first through hole 220 is opened in the middle of the first metal line 210 , and the feeding balun 400 is passed through the first through hole 220 to be connected to the radiation oscillator plate 100 .

[0071] In this embodiment, the first metal circuit 210 is a square closed loop, and may also be a closed loop of other shapes.

[0072] Combination Figure 1 The plastic column 500 is installed through the first mounting holes 230 at the four corners of the low-frequency parasitic radiation plate 200 to fix it below the radiation oscillator plate 100 .

[0073] Reference Figure 6 , Figure 6 Schematic diagram of a high-frequency parasitic radiation plate 300 provided in one embodiment of the present application.

[0074] In this embodiment, the metal circuits provided on the high-frequency parasitic radiation plate 300 are second metal circuits 310. The second metal circuits 310 are four circular metal circuits. The circular metal circuits are located above the corresponding first radiation dipole arm 121 or the first radiation dipole arm 122. In this embodiment, the circular metal circuits are directly above the corresponding first radiation dipole arm 121 or the first radiation dipole arm 122, so as to be able to fully receive the electromagnetic waves generated by the corresponding radiation dipole arm.

[0075] The circumference of the circular metal line is equivalent to the high-frequency electromagnetic wave, and in this embodiment, it is a low-frequency electromagnetic wave that is approximately an integer multiple of 1 / 4 of the wavelength of the high-frequency electromagnetic wave. When the electromagnetic wave generated by the dipole 120 is radiated into space, the second metal line 310 can resonate with the high-frequency electromagnetic wave radiated by the corresponding radiation vibrator arm, and generate a corresponding high-frequency induced current in the second metal line 310. The second metal line 310 can generate a corresponding high-frequency band electromagnetic wave under the action of the high-frequency induced current and radiate it into space.

[0076] In this embodiment, a second through hole 320 is opened between four circular metal lines on the high-frequency parasitic radiation plate 300 .

[0077] Combination Figure 1 The plastic column 500 is installed through the second mounting holes 330 at the four corners of the high-frequency parasitic radiation plate 300 to fix it above the radiation oscillator plate 100 .

[0078] The ultra-wideband dual-polarization radiation unit 10 provided in the present application can use the parallel arranged radiation oscillator plate 100, the low-frequency parasitic radiation plate 200 and the high-frequency parasitic radiation plate 300 as the radiation body, and radiate the low-frequency band electromagnetic waves and the high-frequency band electromagnetic waves into the space through resonant excitation according to the radio frequency signal. It can realize the ultra-wideband radiation function with a simple structure, and greatly expand the working bandwidth of the radiation unit.

[0079] Fig.10 It is a three-dimensional schematic diagram of an ultra-wideband dual-polarization antenna provided by an embodiment of the present application.

[0080] On the basis of the ultra-wideband dual-polarization radiation unit 10 provided in the above embodiments, the present application further provides an ultra-wideband dual-polarization antenna 1000. The ultra-wideband dual-polarization antenna 1000 includes an ultra-wideband dual-polarization radiation unit 10 provided in any of the above embodiments, and a reflector 20 on which the ultra-wideband dual-polarization radiation unit 10 is installed. A partition 21 is provided at the edge of each reflector 20 to adjust the isolation of the ultra-wideband dual-polarization antenna 1000.

[0081] Reference Figure 7-9 , Figure 7 This is an isolation test diagram of an ultra-wideband dual-polarization radiating antenna provided by an embodiment of the present application; Figure 8 This is a standing wave ratio test diagram of an ultra-wideband dual-polarization radiating antenna provided by an embodiment of the present application; Fig. 9 It is a test diagram of the radiation pattern of the ultra-wideband dual-polarization radiating antenna provided by an embodiment of the present application.

[0082] According to the above Figure 7-9 The side view shows that the ultra-wideband dual-polarization radiating antenna 1000 provided in this application can achieve a radiation frequency band of 2.41GHz-4GHz, a standing wave ratio of <2.0, and a relative bandwidth of 49.6% while ensuring that the radiation pattern meets the requirements. In the frequency bands used by 5G: the standing wave ratio of 2.515-2.675GHz and 3.4-3.6GHz is <1.35, and the polarization isolation is >27dB, which fully meets the design requirements of 5G Massive MIMO antennas for radiating units.

[0083] Fig.11 It is a three-dimensional schematic diagram of an ultra-wideband dual-polarization antenna array provided by an embodiment of the present application.

[0084] The present application discloses an ultra-wideband dual-polarization antenna array 2000. The ultra-wideband dual-polarization antenna array 2000 includes a plurality of ultra-wideband dual-polarization radiation units 10 provided by any of the above embodiments, and a reflector 20 on which the ultra-wideband dual-polarization radiation units 10 are installed. Each reflector 20 can simultaneously install a plurality of ultra-wideband dual-polarization radiation units 10 according to their size. A partition 21 is provided at the edge of the reflector 20, and a partition 21 is provided between each ultra-wideband dual-polarization radiation unit 10 to ensure the isolation between each ultra-wideband dual-polarization radiation unit 10.

[0085] The ultra-wideband dual-polarization antenna array 2000 may also be formed by combining a plurality of independent ultra-wideband dual-polarization antennas provided above.

[0086] In the ultra-wideband dual-polarization antenna array 2000, each ultra-wideband dual-polarization antenna 1000 is relatively independent, and different single ultra-wideband dual-polarization antennas in the ultra-wideband dual-polarization antenna array 2000 can be controlled according to the use requirements, or a combination of multiple ultra-wideband dual-polarization antennas 1000 can be controlled. The radiation frequency band of each ultra-wideband dual-polarization antenna 1000 can be controlled and adjusted to further achieve the control. If the number of ultra-wideband dual-polarization antennas 1000 in the ultra-wideband dual-polarization antenna array 2000 used is more, the capacity of the corresponding frequency band range is higher.

[0087] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of disclosure involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the above disclosed concept. For example, the above features are replaced with the technical features with similar functions disclosed in this application (but not limited to) by each other to form a technical solution.

Claims

1. An ultra-wideband dual-polarization radiation unit, characterized in that: include: A radiation oscillator plate, a low-frequency parasitic radiation plate and a high-frequency parasitic radiation plate arranged in parallel; The radiation oscillator plate is located between the low-frequency parasitic radiation plate and the high-frequency parasitic radiation plate; The radiation oscillator plate comprises: a dielectric plate, two dipoles with mutually orthogonal polarization directions and a feeding line; wherein the dipole is arranged on one side of the dielectric plate, and the feeding line is arranged on the other side of the dielectric plate and is electrically connected to the dipole; The low-frequency parasitic radiation plate and the high-frequency parasitic radiation plate are respectively provided with metal lines for inducing low-frequency electromagnetic waves and high-frequency electromagnetic waves; the metal lines are used to obtain corresponding induced currents according to the electromagnetic wave coupling of the corresponding frequency band, and the electromagnetic waves of the corresponding frequency band generated by the induced current are radiated into space; Feed balun; Wherein, the feeding balun is used to support the radiation oscillator plate and feed it; Each of the dipoles comprises a first radiating dipole arm and a second radiating dipole arm which are arranged opposite to each other; The feeding balun includes two groups of balun structures, each group of the balun structures includes a coaxial cable and a metal column, and the coaxial cable and the metal column are respectively connected to the first radiation dipole arm and the second radiation dipole arm; The feed circuit includes two orthogonally arranged feed sub-circuits, each feed sub-circuit corresponding to each group of the balun structures; Each of the feeder subcircuits comprises a first end and a second end; The first end overlaps with the first radiation dipole arm, and the corresponding overlapping area is close to the center position of the corresponding dipole; the second end overlaps with the second radiation dipole arm, and the corresponding overlapping area is the area on both sides of the center line of the second radiation dipole arm passing through the first radiation dipole arm and the second radiation dipole arm.

2. The ultra-wideband dual-polarization radiation unit according to claim 1, characterized in that: The first radiation dipole arm and the second radiation dipole arm both have circular holes, and the size of the circular holes is set according to the selected operating frequency.

3. The ultra-wideband dual-polarization radiation unit according to claim 2, characterized in that: A metal via is provided in the area where the first radiation dipole arm overlaps with the first end; The outer conductor of the coaxial cable is welded to the area of ​​the first radiation dipole arm overlapping the first end; The inner conductor of the coaxial cable is passed through the metal via hole and is welded to the first end portion through the metal via hole.

4. The ultra-wideband dual-polarization radiation unit according to claim 3, characterized in that: The two orthogonally arranged feeder subcircuits are respectively a first feeder subcircuits and a second feeder subcircuits; The first feeder circuit is arranged on a surface of the dielectric plate, two avoidance metal holes are arranged at the intersection of the second feeder circuit and the first feeder circuit, the two avoidance metal holes penetrate the dielectric plate, and the second feeder circuit is transmitted along the two avoidance metal holes.

5. The ultra-wideband dual-polarization radiation unit according to any one of claims 1 to 4, characterized in that: Also includes: A fixing block disposed below the low-frequency parasitic radiation plate; The fixing block fixes the coaxial cable and the metal column.

6. The ultra-wideband dual-polarization radiation unit according to claim 1, characterized in that: The metal circuit provided on the low-frequency parasitic radiation plate is a first metal circuit, and the first metal circuit is a closed loop; The range of the circumference of the first metal line is: an integer multiple of the wavelength of the low-frequency electromagnetic wave of 1 / 4 of the working frequency band of the dual-polarization radiation unit.

7. The ultra-wideband dual-polarization radiation unit according to claim 1, characterized in that: The metal circuit provided on the high-frequency parasitic radiation plate is a second metal circuit, and the second metal circuit is four circular metal circuits; Each of the circular metal lines is directly opposite to the circular hole of the corresponding radiation dipole arm, and the circumference of each circular metal line is in the range of an integer multiple of 1 / 4 of the wavelength of the high-frequency electromagnetic wave in the working frequency band of the dual-polarization radiation unit.

8. The ultra-wideband dual-polarization radiation unit according to claim 1, characterized in that: The low-frequency parasitic radiation plate and the high-frequency parasitic radiation plate are fixedly connected to the radiation oscillator plate via plastic columns located at their four corners.

9. An ultra-wideband dual-polarization antenna, characterized in that: include: An ultra-wideband dual-polarization radiation unit as described in any one of claims 1 to 8, and a reflection plate on which the ultra-wideband dual-polarization radiation unit is installed; A partition is arranged at the edge of the reflecting plate.

10. An ultra-wideband dual-polarization antenna array, characterized in that: include: An ultra-wideband dual-polarization radiation unit as described in any one of claims 1 to 8, and a reflector for mounting the ultra-wideband dual-polarization radiation unit; A partition is arranged at the edge of the reflection plate, and a partition is arranged between each of the ultra-wideband dual-polarization radiation units.

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