WO2021244158A1

WO2021244158A1 - Dual-polarized antenna and customer premise equipment

Info

Publication number: WO2021244158A1
Application number: PCT/CN2021/087818
Authority: WO
Inventors: 揭骏仁
Original assignee: Oppo广东移动通信有限公司
Priority date: 2020-06-02
Filing date: 2021-04-16
Publication date: 2021-12-09
Also published as: CN111525234A

Abstract

A dual-polarized antenna and a customer premise equipment. The dual-polarized antenna comprises a radiation plate, a first support plate, a second support plate, and an antenna radiation portion; a first oscillator unit and a second oscillator unit having polarization directions orthogonal to each other are provided on the radiation plate; the first support plate and the second support plate are orthogonally arranged and together support the radiation plate; the antenna radiation portion is located on the first support plate and the second support plate, and is separately and electrically connected to the first oscillator unit and the second oscillator unit.

Description

Dual-polarized antenna and customer front equipment

This application claims the priority of a Chinese patent application filed with the Chinese Patent Office on June 02, 2020, the application number is 202010491014.3, and the invention title is "Dual Polarized Antenna and Customer Front Equipment", the entire content of which is incorporated herein by reference. Applying.

Technical field

This application relates to the field of antenna technology, in particular to a dual-polarized antenna and customer front equipment.

Background technique

Customer Premise Equipment (CPE) is a mobile signal access device that receives mobile signals and forwards them with wireless fidelity signals (Wireless Fidelity, Wi-Fi for short). There are also more mobile terminals that can support simultaneous Internet access. CPE can be widely used for wireless network access in rural areas, towns, hospitals, units, factories, communities, etc., which can save the cost of laying wired networks.

When the distance is relatively long, or there are many obstacles, the signal coverage of the base station is prone to signal blind spots. In these blind spots, terminal devices such as smart phones cannot receive base station signals. CPE can re-relay the base station signal. It turns the received signal into a Wi-Fi signal and provides it to nearby devices. Compared with smart phones, notebooks and other terminal devices, CPE antennas have stronger gain and higher power, and its signal transmission and reception capabilities are more powerful than smart phones. Therefore, in some places where the smart phone has no signal, the CPE may have the signal. CPE can turn operator network signals into Wi-Fi signals, and more devices such as smart phones, tablets, laptops, etc. can use CPE to access the Internet.

Summary of the invention

The embodiments of the present application provide a dual-polarized antenna and customer front-end equipment, which can realize the miniaturization of the antenna.

In the first aspect, an embodiment of the present application provides a dual-polarized antenna, including:

A radiating plate, the radiating plate includes a first surface and a second surface that are oppositely arranged, and a first vibrator unit and a second vibrator unit with polarization directions orthogonal to each other are provided on the first surface;

A first supporting plate, the first supporting plate is connected to the second surface of the radiating plate;

The second support plate, the second support plate is connected to the second surface of the radiant plate, the second support plate and the first support plate are arranged orthogonally, the second support plate and the first support plate The supporting plate supports the radiant plate together; and

An antenna radiating part, the antenna radiating part is located on the first supporting plate and the second supporting plate, and the antenna radiating part is electrically connected to the first dipole unit and the second dipole unit, respectively.

In the second aspect, an embodiment of the present application provides a customer front-end device, including:

Dual-polarized antenna; and

A circuit board, which is electrically connected to the dual-polarized antenna, so that the dual-polarized antenna transmits radio frequency signals;

Wherein, the dual-polarized antenna includes:

Description of the drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings that need to be used in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

Figure 1 is a schematic structural diagram of a customer front-end device provided by an embodiment of the application.

Figure 2 is a schematic diagram of an application scenario of a customer front-end device according to an embodiment of the application.

FIG. 3 is a schematic diagram of the first structure of a dual-polarized antenna provided by an embodiment of this application.

FIG. 4 is a schematic diagram of the connection of the first support plate and the second support plate shown in FIG. 3.

FIG. 5 is a schematic diagram of the first structure of the first vibrator unit and the second vibrator unit shown in FIG. 3.

FIG. 6 is a schematic diagram of a second structure of the first vibrator unit and the second vibrator unit shown in FIG. 3.

Fig. 7 is a schematic diagram of the connection between the antenna radiating part and the first dipole unit and the second dipole unit shown in Fig. 3.

Fig. 8 is a schematic diagram of an exploded structure of the dual-polarized antenna shown in Fig. 3.

9 is a schematic diagram of the first direction structure of the first balun feeding structure and the second balun feeding structure shown in FIG. 8.

FIG. 10 is a schematic diagram of the second direction structure of the first balun feeding structure and the second balun feeding structure shown in FIG. 8.

FIG. 11 is a schematic diagram of electrical connections between the first vibrator unit and the second vibrator unit shown in FIG. 8.

FIG. 12 is a schematic diagram of a second structure of a dual-polarized antenna provided by an embodiment of this application.

FIG. 13 is a schematic diagram of the structure of the reflector shown in FIG. 12.

FIG. 14 is a graph of S21 parameters of the first dipole unit and the second dipole unit of the dual-polarized antenna provided by an embodiment of the application.

FIG. 15 is a graph of radiation efficiency of a dual-polarized antenna provided by an embodiment of the application.

FIG. 16 is a first three-dimensional radiation pattern of a dual-polarized antenna provided by an embodiment of this application.

Fig. 17 is a plane radiation pattern of the dual-polarized antenna shown in Fig. 16.

FIG. 18 is a second three-dimensional radiation pattern of the dual-polarized antenna provided by an embodiment of this application.

Fig. 19 is a plane radiation pattern of the dual-polarized antenna shown in Fig. 18.

detailed description

The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative work shall fall within the protection scope of this application.

The embodiment of the present application provides a dual-polarized antenna and customer front-end equipment. The detailed description will be given below. Among them, the dual-polarized antenna can be set in the customer's front-end equipment. Customer front-end equipment can be equipment that has the function of re-relaying base station signals and turning the received signals into Wi-Fi signals for use by nearby equipment, such as wireless routers, repeaters, telephones, and optical devices. Devices such as cats and computers can all be customer front-end devices in the embodiments of the present application.

Please refer to FIG. 1, which is a schematic structural diagram of a customer front-end device provided by an embodiment of this application. The customer premises equipment 10 may include a dual-polarized antenna 100, a housing 200, and a circuit board 300. Wherein, both the circuit board 300 and the dual-polarized antenna 100 may be arranged in the housing 200, and the dual-polarized antenna 100 may include one or more. For example, four dual-polarized antennas 100 are provided in FIG. 1. The circuit board 300 can be provided with a radio frequency circuit. When the dual-polarized antenna 100 is electrically connected to the circuit board 300, under the control of the radio frequency circuit, the dual-polarized antenna 100 can perform wireless communication with the base station and other wireless devices to achieve Transmission of radio frequency signals.

Exemplarily, referring to FIG. 1 and referring to FIG. 2, FIG. 2 is a schematic diagram of an application scenario of a customer front-end device provided in an embodiment of the application. When the signal of the base station 20 is weak, the customer front-end device 10 of the embodiment of the present application can control the dual-polarized antenna 100 to re-relay the signal of the base station 20, and the customer front-end device 10 can receive the dual-polarized antenna 100 The received signal becomes a Wi-Fi signal, and is provided to the nearby terminal device 30, such as a mobile phone, a tablet computer, a notebook computer, etc., through the dual-polarized antenna 100.

In order to improve the portability of the customer front device 10, the volume of the customer front device 10 is often set to be small, which makes the volume of the dual-polarized antenna 100 built into the housing 200 of the customer front device 10 also need to be small. . Based on this, please refer to FIG. 3, which is a schematic diagram of the first structure of a dual-polarized antenna provided by an embodiment of this application.

The dual-polarized antenna 100 of the embodiment of the present application includes a radiating plate 110, a first supporting plate 120, a second supporting plate 130, a first dipole unit 140, a second dipole unit 150, and an antenna radiation part 160. Wherein, the radiating plate 110 includes a first surface 111 and a second surface 112 oppositely disposed, the first vibrator unit 140 and the second vibrator unit 150 are disposed on the first surface 111, and the poles of the first vibrator unit 140 and the second vibrator unit 150 The chemical directions are orthogonal to each other.

Wherein, the first support plate 120 and the second support plate 130 are located on one side of the second surface 112 of the radiation plate 110, the first support plate 120 and the second support plate 130 are arranged orthogonally, and the first support plate 120 and the second support plate The plate 130 is also connected to the second surface 112 so that the first support plate 120 and the second support plate 130 can jointly support the radiant plate 110. The antenna radiation part 160 is located on the first support plate 120 and the second support plate 130 at the same time. For example, a part of the antenna radiation part 160 is located on the first support plate 120 and another part of the antenna radiation part 160 is located on the second support plate 130. The antenna radiating part 160 is electrically connected to the first dipole unit 140 and the second dipole unit 150, respectively, and the antenna radiating part 160 can radiate radio frequency signals together with the first dipole unit 140 and the second dipole unit 150.

In the dual-polarized antenna 100 of the embodiment of the present application, the antenna radiation part 160 can increase the radiation length of the first element unit 140 and the second element unit 150. On the one hand, under the premise of the same coverage frequency band, the first element unit 140 and the second element unit 140 The area of the second dipole unit 150 can be small, so that the volume of the entire dual-polarized antenna 100 is small, and the dual-polarized antenna 100 can be miniaturized; on the other hand, the first dipole unit 140 and the second dipole with increased length The unit 150 can cover low-frequency radio frequency signals, so that the frequency band of the dual-polarized antenna 100 can also be expanded. Moreover, in the embodiment of the present application, the antenna radiating part 160 is arranged on the first supporting plate 120 and the second supporting plate 130, and there is no need to additionally provide a carrier for the antenna radiating part 160, which simplifies the structure of the dual-polarized antenna 100, and at the same time, The antenna radiating part 160 is arranged on the first supporting plate 120 and the second supporting plate 130 which are arranged orthogonally. No additional adjustment of the position of the antenna radiating part 160 is required to ensure that the first vibrator unit 140 and the first vibrator unit 140 after the antenna radiating part 160 are electrically connected to each other. The second vibrator unit 150 is still arranged orthogonally, thereby reducing the difficulty of assembling the dual-polarized antenna 100.

Among them, the first support plate 120 and the second support plate 130 can be orthogonally connected together by riveting, screw connection, etc. Of course, the first support plate 120 and the second support plate 130 can also be orthogonally connected together by clamping. .

Exemplarily, please refer to FIG. 4, which is a schematic diagram of the connection between the first support plate and the second support plate shown in FIG. 3. The lower end of the first support plate 120 may be provided with a first notch 121, and the upper end of the second support plate 130 may be provided with a second notch 131. The positions of the first notch 121 and the second notch 131 may match, so that the first support The plate 120 can be snapped into the second notch 131, and the second support plate 130 can be snapped into the first notch 121, the upper and lower ends of the first support plate 120 and the second support plate 130 can be flush, so that The orthogonal clamping connection of the first supporting plate 120 and the second supporting plate 130 is realized.

It should be noted that the connection method of the first support plate 120 and the second support plate 130 in the embodiment of the present application is not limited to this, and other methods that can realize the orthogonal connection of the first support plate 120 and the second support plate 130 are all It is within the protection scope of the embodiments of this application.

It can be understood that, as shown in FIG. 3, the lengths of the first supporting plate 120 and the second supporting plate 130 may be equal to the diagonal length of the radiating plate 110. That is, the first supporting plate 120 may be arranged along one diagonal line of the radiating plate 110, and the second supporting plate 130 may be arranged along another diagonal line of the radiating plate 110, so that the first supporting plate of the embodiment of the present application The contact area between the plate 120 and the second support plate 130 and the radiation plate 110 is larger, and the radiation plate 110 can be better supported.

It can be understood that the use of the first support plate 120 and the second support plate 130 to support the radiation plate 110 can increase the clearance area of the first vibrator unit 140 and the second vibrator unit 150 on the radiation plate 110, thereby increasing the first vibrator The isolation of the unit 140 and the second vibrator unit 150.

Please refer to FIG. 3 again. The first vibrator unit 140 and the second vibrator unit 150 of the embodiment of the present application may be directly or indirectly connected to the first surface 111 of the radiation plate 110. For example, the first vibrator unit 140 and the second vibrator unit 150 may be directly etched on the first surface 111. For another example, the first vibrator unit 140 and the second vibrator unit 150 may be attached to the first surface 111 in the form of a patch. For another example, the first vibrator unit 140 and the second vibrator unit 150 may be formed on the first surface 111 in the form of silver paste spraying. It can be understood that the embodiment of the present application does not specifically limit the connection form of the first vibrator unit 140 and the second vibrator unit 150.

Wherein, the first vibrator unit 140 may be a dipole vibrator unit. Exemplarily, please refer to FIG. 5, which is a schematic diagram of the first structure of the first vibrator unit and the second vibrator unit shown in FIG. 3. The first vibrator unit 140 may include two radiating arms, for example, a first radiating arm 141 and a second radiating arm 142. As shown in FIG. 5, the first radiating arm 141 and the second radiating arm 142 may be located on the same radiation plane, and the first radiating arm 141 may be arranged symmetrically about a first line of symmetry L1, and the second radiating arm 142 may also be arranged symmetrically about the first line of symmetry L1. At the same time, the first radiating arm 141 and the second radiating arm 142 may also be arranged symmetrically about an origin O, so that the first radiating arm 141 and the second radiating arm 142 The formed first vibrator unit 140 is a dipole vibrator unit.

Similarly, the second vibrator unit 150 may also be a dipole vibrator unit. As shown in FIG. 5, the second vibrator unit 150 may include two radiating arms, for example, a third radiating arm 151 and a fourth radiating arm 152. The third radiating arm 151 and the fourth radiating arm 152 may be located on the same radiating plane, and the third radiating arm 151 may be arranged symmetrically about a second line of symmetry L2, and the fourth radiating arm 152 may also be arranged about the second symmetry line L2. The two symmetry lines L2 are arranged axisymmetrically. At the same time, the third radiating arm 151 and the fourth radiating arm 152 may also be arranged symmetrically about the center of the origin O, so that the second dipole unit 150 formed by the third radiating arm 151 and the fourth radiating arm 152 is a dipole dipole unit.

Wherein, the polarization direction of the first vibrator unit 140 and the polarization direction of the second vibrator unit 150 are orthogonal to each other. Exemplarily, as shown in FIG. 5, the first symmetry line L1 of the first vibrator unit 140 and the second symmetry line L2 of the second vibrator unit 150 may intersect at the origin O, and the first symmetry line L1 and the second symmetry line The angle between L2 can be 90 degrees. At this time, the first radiating arm 141, the second radiating arm 142, the third radiating arm 151, and the fourth radiating arm 152 are arranged in two mirror images. That is, between the first radiating arm 141 and the third radiating arm 151, and between the second radiating arm 142 and the fourth radiating arm 152 can be arranged symmetrically about the third symmetry line L3, the first radiating arm 141 and the fourth radiating arm The arms 152 and the second radiating arm 142 and the third radiating arm 151 may be arranged axisymmetrically about the fourth line of symmetry L4.

It is understandable that the angle between the first line of symmetry L1 and the third line of symmetry L3 may be -45 degrees, and the angle between the second line of symmetry L2 and the third line of symmetry L3 may be +45 degrees, and further, the first vibrator The unit 140 and the second vibrator unit 150 can form a ±45 degree dual-polarized antenna radiator. In the dual-polarized antenna radiator, the polarization orthogonality of ±45 degrees can ensure the isolation between +45 degrees and -45 degrees between the first element unit 140 and the second element unit 150 to meet the isolation between the intermodulation pair antennas Degree requirements (≥30dB), and can effectively ensure the gain of antenna diversity when receiving signals.

Among them, the shape of the first vibrator unit 140 and the second vibrator unit 150 may be, but not limited to, a variety of shapes such as petals, squares, butterflies, circles, triangles, etc. For example, the first vibrator unit 140 and the second vibrator unit 150 in FIG. 5 have a rectangular shape. For another example, please refer to FIG. 6, which is a schematic diagram of the second structure of the first vibrator unit and the second vibrator unit shown in FIG. 3. As shown in FIG. 6, the first vibrator unit 140 and the second vibrator unit in FIG. The vibrator unit 150 has a petal shape. It is understandable that the embodiment of the present application does not limit the shapes of the first vibrator unit 140 and the second vibrator unit 150.

Wherein, the first vibrator unit 140 and the second vibrator unit 150 may be provided with a hollow structure or a groove structure. Exemplarily, one or more groove structures may be formed on the first vibrator unit 140 and the second vibrator unit 150 by etching, cutting, or the like. Or, for example, as shown in FIGS. 5 and 6, the first radiating arm 141 of the first vibrator unit 140 may be provided with a first through hole 143 penetrating the thickness direction of the radiation plate 110, and the first through hole 143 of the first vibrator unit 140 The second radiating arm 142 may be provided with a second through hole 144 penetrating the thickness direction of the radiating plate 110. In the same way, the third radiating arm 151 of the second vibrator unit 150 may also be provided with a third through hole 153 penetrating the thickness direction of the radiation plate 110, and the fourth radiating arm 152 of the second vibrator unit 150 may also be provided with a penetrating radiation. The fourth through hole 154 in the thickness direction of the board 110.

Among them, the shape and size of the first through hole 143, the second through hole 144, the third through hole 153, and the fourth through hole 154 may be exactly the same, and the first through hole 143, the second through hole 144, and the third through hole 154 may be exactly the same in shape and size. The hole 153 and the fourth through hole 154 can also be arranged in two mirror images to ensure that the first radiating arm 141, the second radiating arm 142, the third radiating arm 151 and the fourth radiating arm 152 are also arranged in a mirror image.

It can be understood that the first through hole 143, the second through hole 144, the third through hole 153, and the fourth through hole 154 may be through hole structures of any shape, such as but not limited to a circle, a ring, a triangle, a rectangle, Butterfly shape, petal shape, etc., the embodiment of the present application does not specifically limit the structure of the above-mentioned through hole.

It can be understood that the number of the first through hole 143, the second through hole 144, the third through hole 153, and the fourth through hole 154 is not limited to one, and may include more than one. As shown in FIG. 5, the number of through holes of the first through hole 143, the second through hole 144, the third through hole 153 and the fourth through hole 154 are all three. It should be noted that the number of the first through holes 143, the second through holes 144, the third through holes 153, and the fourth through holes 154 can be the same to ensure that the first radiating arm 141, the second radiating arm 142, and the The three radiating arms 151 and the fourth radiating arms 152 are also arranged in two mirror images. In the dual-polarized antenna 100 of the embodiment of the present application, the first dipole unit 140 and the second dipole unit 150 are provided with a through-hole structure. Due to the existence of the through-hole structure, the first dipole unit 140 and the second dipole unit 150 are in communication. A capacitance effect can be generated at the edge of the hole structure, so that the working frequency band of the first vibrator unit 140 and the second vibrator unit 150 can be extended to a high frequency band.

Based on the above structures of the first dipole unit 140 and the second dipole unit 150, please refer to FIG. 7, which is a schematic diagram of the connection between the antenna radiating part and the first dipole unit and the second dipole unit shown in FIG. The antenna radiating part 160 of the embodiment of the present application may include four sub-radiating parts to correspond to the two radiating arms of the first dipole unit 140 and the two radiating arms of the second dipole unit 150, and each sub-radiating part may correspond to A radiating arm is connected so that a radiating arm and a sub-radiating part form a whole and jointly radiate radio frequency signals.

As shown in FIG. 7, the antenna radiation part 160 includes a first sub-radiation part 161, a second sub-radiation part 162, a third sub-radiation part 163, and a fourth sub-radiation part 164. A radiating arm 141 is electrically connected to form the first radiating unit; the second sub-radiating portion 162 can be electrically connected to the second radiating arm 142 to form a second radiating unit; the third sub-radiating portion 163 can be electrically connected to the third radiating arm 151 And form a third radiation unit; the fourth sub-radiation part 164 may be electrically connected with the fourth radiation arm 152 to form a fourth radiation unit.

It is understandable that the above-mentioned first radiation group, second radiation group, third radiation group, and fourth radiation group can also be arranged in two mirror images, so that the first radiation group, the second radiation group, the third radiation group and the first radiation group can be arranged in two mirror images. The four radiators as a whole can still form a dual-polarized antenna radiator.

It should be noted that, theoretically, the shapes and sizes of the first sub-radiation portion 161, the second sub-radiation portion 162, the third sub-radiation portion 163, and the fourth sub-radiation portion 164 should be completely the same. However, in practical applications, the shapes and sizes of the first sub-radiation portion 161, the second sub-radiation portion 162, the third sub-radiation portion 163, and the fourth sub-radiation portion 164 may be approximately the same. That is to say, in practical applications, the above-mentioned first radiating unit, second radiating unit, third radiating unit, and fourth radiating unit are arranged in two approximate mirror images to realize the setting of the dual-polarized antenna 100. For example, in actual use, the lengths of the first sub-radiation portion 161, the second sub-radiation portion 162, the third sub-radiation portion 163, and the fourth sub-radiation portion 164 may be inconsistent within a certain range.

It can be understood that since the first dipole unit 140 including the first radiation arm 141 and the second radiation arm 142, and the second dipole unit 150 including the third radiation arm 151 and the fourth radiation arm 152 are arranged on the radiation plate 110 The first surface 111; and the antenna radiation portion 160 including the first sub-radiation portion 161, the second sub-radiation portion 162, the third sub-radiation portion 163 and the fourth sub-radiation portion 164 is disposed on the second surface of the radiation plate 110 112 side. Therefore, when the antenna radiating portion 160 is electrically connected to the first vibrator unit 140 and the second vibrator unit 150, four slits penetrating through the first surface 111 and the second surface 112 can be opened on the radiation plate 110 (not shown in the figure). (Shown), the four slits can be set corresponding to the four sub-radiating parts, so that each sub-radiating part of the antenna radiating part 160 can pass through a slit to be directly or indirectly connected to a radiating arm on the first surface 111 , Such as welding together, so as to achieve electrical connection.

In the dual-polarized antenna 100 of the embodiment of the present application, the antenna radiating part 160 is electrically connected to the first dipole unit 140 and the second dipole unit 150 through a slit on the radiating plate 110. On the one hand, when the space of the CPE equipment is certain, The antenna radiating part 160 of the embodiment of the present application can be increased by the thickness of the radiating plate 110, thereby making the antenna radiating part 160 longer to cover signals of lower frequency bands; on the other hand, when the length of the antenna radiating part 160 is fixed The antenna radiating part 160 of the embodiment of the present application can hide the length of the thickness of the radiating part without occupying additional space, so that the height of the dual-polarized antenna 100 can be made smaller, and the size of the dual-polarized antenna 100 can be made smaller .

Based on the foregoing structure of the antenna radiating part 160, the first dipole unit 140, and the second dipole unit 150, please refer to FIG. 8 in conjunction with FIG. 3. FIG. 8 is a schematic diagram of the exploded structure of the dual-polarized antenna shown in FIG. The dual-polarized antenna 100 of the embodiment of the present application further includes a first balun feed structure 170 and a second balun feed structure 180.

Wherein, the first balun feeding structure 170 may be directly or indirectly connected to the first supporting plate 120. For example, the first balun feeding structure 170 may be formed on the side of the first supporting plate 120 by etching, patching, etc. . The first balun feeding structure 170 may be electrically connected to the two radiating arms of the first vibrator unit 140 respectively, so that the currents flowing through the two radiating arms of the first vibrator unit 140 are in the same direction. In the same way, the second balun feeding structure 180 may be directly or indirectly connected to the second supporting plate 130. For example, the second balun feeding structure 180 may be formed on the side of the second supporting plate 130 by etching, patching, etc. superior. The second balun feeding structure 180 may be electrically connected to the two radiating arms of the second vibrator unit 150 respectively, so that the currents flowing through the two radiating arms of the second vibrator unit 150 are in the same direction.

When the first dipole unit 140 and the second dipole unit 150 are both dipole antennas, according to the antenna theory, the dipole antenna is a balanced antenna, and the commonly used feed coaxial cable is an unbalanced transmission line. If the pole antenna is electrically connected to the coaxial cable, high-frequency current flows through the outer sheath of the coaxial cable, and the currents of the two radiating arms of the dipole antenna are different in direction, which will affect the radiation of the antenna. The dual-polarized antenna 100 of the embodiment of the present application uses the first balun feed structure 170 and the second balun feed structure 180, so that the currents flowing through the two radiating arms of the first vibrator unit 140 are in the same direction and flow through The currents of the two radiating arms of the second vibrator unit 150 are also in the same direction, thereby ensuring that the antenna has better radiation performance.

Wherein, both the first balun feeding structure 170 and the second balun feeding structure 180 may include a coupling part and a feeding part. Exemplarily, please refer to FIG. 8 and FIG. 9 and FIG. 10. FIG. 9 is a schematic diagram of the first direction structure of the first balun feeding structure and the second balun feeding structure shown in FIG. 8, and FIG. 10 is The schematic diagram of the second direction structure of the first balun feeding structure and the second balun feeding structure shown in FIG. 8.

As shown in FIGS. 9 and 10, the first balun feeding structure 170 may include a first coupling part 171 and a first feeding part 172. The first coupling portion 171 and the first feeding portion 172 may be respectively connected to two opposite sides of the first support plate 120. For example, the first coupling portion 171 may be directly or indirectly connected to the first side surface of the first support plate 120 (Figure (Not shown), the first power feeding portion 172 may be directly or indirectly connected to the second side surface (not shown in the figure) of the first support plate 120, wherein the first side surface and the second side surface are arranged opposite to each other.

It can be understood that one end of the first coupling part 171 may be electrically connected to the two radiating arms of the first vibrator unit 140, and the other end of the first coupling part 171 may be grounded. One end of the first power feeding part 172 may be used for electrical connection with the inner core of the coaxial line, and the other end of the first power feeding part 172 may be coupled and connected with the first coupling part 171, and at the same time, the outer core of the coaxial line is grounded. At this time, the coaxial line, the first feeding part 172, the first coupling part 171 and the radiating arm of the first vibrator unit 140 can form a complete signal loop, and the coaxial line feeds the radio frequency signal into the first feeding part 172 , The first feeding part 172 couples the radio frequency signal to the first coupling part 171 through electromagnetic coupling, and the first coupling part 171 transmits the radio frequency signal to the two radiating arms of the first vibrator unit 140 so as to flow through the first coupling part 171. The currents of the two radiating arms of the vibrator unit 140 are in the same direction so that they can transmit radio frequency signals together.

As shown in FIG. 9, the first coupling part 171 may include two sub-parts, for example, a first sub-coupling part 1711 and a second sub-coupling part 1712. As shown in FIG. 10, the first power feeder 172 may include two sub-parts, for example, a first power feeder 1721 and a second power feeder 1722. One end of the first sub-feeding portion 1721 is electrically connected to the inner core of the coaxial line, the other end is coupled to the first sub-coupling portion 1711, and one end of the first sub-coupling portion 1711 is connected to the first sub-coupling unit 140. The radiating arm 141 is electrically connected, and the other end of the first sub-coupling portion 1711 is grounded, so that the first sub-feeding portion 1721 and the first sub-coupling portion 1711 can form a first feeding structure. In the same way, one end of the second sub-feeding portion 1722 is electrically connected to the inner core of the coaxial line, and the other end is coupled to the second sub-coupling portion 1712, and one end of the second sub-coupling portion 1712 is connected to the first vibrator unit 140. The two radiating arms 142 are electrically connected, and the other end of the second sub-coupling portion 1712 is grounded, so that the second sub-feeding portion 1722 and the second sub-coupling portion 1712 can form a second power feeding structure.

Wherein, as shown in FIGS. 8 to 10, the second balun feeding structure 180 may include a second coupling part 181 and a second feeding part 182. The second coupling portion 181 and the second feeding portion 182 may be respectively connected to two opposite sides of the second support plate 130. For example, the second coupling portion 181 may be directly or indirectly connected to the third side surface of the second support plate 130 (Figure (Not shown), the second power feeding portion 182 may be directly or indirectly connected to the fourth side surface (not shown in the figure) of the second support plate 130, wherein the third side surface and the fourth side surface are arranged opposite to each other.

It can be understood that the structure of the second coupling portion 181 may be the same as the structure of the first coupling portion 171. For example, one end of the second coupling portion 181 may be electrically connected to the two radiating arms of the second vibrator unit 150, and the second The other end of the coupling part 181 may be grounded. The structure of the second power feeder 182 may also be the same as the structure of the first power feeder 172. For example, one end of the second power feeder 182 may be used for electrical connection with the inner core of the coaxial cable. The other end of the coaxial cable may be connected to the second coupling part 181, and at the same time, the outer core of the coaxial line may be grounded. At this time, the coaxial line, the second power feeding portion 182, the second coupling portion 181, and a radiation arm of the second vibrator unit 150 can form a complete signal loop, so that the two radiations flowing through the second vibrator unit 150 The currents of the arms are in the same direction so that they can transmit radio frequency signals together.

Wherein, as shown in FIG. 10, the second coupling portion 181 may include a third sub-coupling portion 1811 and a fourth sub-coupling portion 1812. As shown in FIG. 9, the second power feeder 182 may include a third sub power feeder 1821 and a fourth sub power feeder 1822. One end of the third sub-feeding portion 1821 is electrically connected to the inner core of the coaxial line, the other end is coupled to the third sub-coupling portion 1811, and one end of the third sub-coupling portion 1811 is connected to the third radiating arm of the second vibrator unit 150 151 is electrically connected, and the other end of the third sub-coupling portion 1811 is grounded, so that the third sub-feeding portion 1821 and the third sub-coupling portion 1811 can form a third feeding structure. In the same way, one end of the fourth sub-feeding portion 1822 is electrically connected to the inner core of the coaxial line, the other end is coupled to the fourth sub-coupling portion 1812, and one end of the fourth sub-coupling portion 1812 is connected to the second vibrator unit 150. The four radiating arms 152 are electrically connected, and the other end of the fourth sub-coupling portion 1812 is grounded, so that the fourth sub-feeding portion 1822 and the fourth sub-coupling portion 1812 can form a fourth feeding structure.

In the dual-polarized antenna 100 of the embodiment of the present application, the first balun feed structure 170 is disposed on the first support plate 120, and the second balun feed structure 180 is disposed on the second support plate 130. On the one hand, there is no need The installation space of the first balun feed structure 170 and the second balun feed structure 180 is additionally reserved, which saves the internal space of the customer's front-end equipment 10; on the other hand, the first support plate 120 and the second support plate 130 The area of the first balun feeding structure 170 and the second balun feeding structure 180 can be arranged at any position of the first supporting plate 120 and the second supporting plate 130, so as to facilitate the adjustment of the first vibrator unit 140, Frequency and gain of the second vibrator unit 150. In addition, after the first balun feeding structure 170 and the second balun feeding structure 180 of the embodiment of the present application are respectively disposed on the first supporting plate 120 and the second supporting plate 130 arranged orthogonally, the first feeding bar The Lun structure and the second feeding balun structure can also be arranged orthogonally, so that the installation difficulty of the first feeding balun structure and the second feeding balun structure can be reduced.

It is understandable that the first to fourth sub-coupling parts and the first to fourth sub-feeding parts of the embodiments of the present application can be formed on the first support plate 120 and the second support plate 130 by etching, patching, etc. superior. Wherein, the first sub-coupling part 1711 and the second sub-coupling part 1712 may be two independent parts, and the third sub-coupling part 1811 and the fourth sub-coupling part 1812 may also be two independent parts. Alternatively, the first sub-coupling portion 1711 and the second sub-coupling portion 1712 can also be a whole, and the third sub-coupling portion 1811 and the fourth sub-coupling portion 1812 can also be a whole, thereby simplifying the first coupling portion 171 and the second sub-coupling portion. The formation process of the second coupling part 181.

Similarly, the first sub-feeder 1721 and the second sub-feeder 1722 may be two independent parts, and the third sub-feeder 1821 and the fourth sub-feeder 1822 may also be two independent parts. Alternatively, the first sub-feeding portion 1721 and the second sub-feeding portion 1722 can also be a whole, and the third sub-feeding portion 1821 and the fourth sub-feeding portion 1822 can also be a whole, so that the first sub-feeding portion can be simplified. The formation process of the power feeding part 1721 and the second sub power feeding part 1722.

It is understandable that, as shown in FIG. 9, the first sub-coupling portion 1711 and the second sub-coupling portion 1712 may be symmetrically arranged about a center line L5 passing through the origin and perpendicular to the first surface 111 of the radiation plate 110. Similarly, as shown in FIG. 10, the third sub-coupling portion 1811 and the fourth sub-coupling portion 1812 may also be symmetrically arranged about the center line L5. In addition, the first sub-coupling portion 1711, the second sub-coupling portion 1712, the third sub-coupling portion 1811, and the fourth sub-coupling portion 1812 may be trapezoidal as shown in FIGS. 9 and 10 to increase the area of the sub-coupling portion. Of course, the shapes of the first sub-coupling portion 1711, the second sub-coupling portion 1712, the third sub-coupling portion 1811, and the fourth sub-coupling portion 1812 are not limited to this, and may be other rectangular, circular, or butterfly shapes. The embodiment of the application does not limit this.

It should be noted that, in actual production, the first sub-coupling portion 1711 and the second sub-coupling portion 1712 only need to be arranged approximately symmetrically, and do not need to be completely symmetrically arranged. In the same way, the third sub-coupling part 1811 and the fourth sub-coupling part 1812 only need to be arranged approximately symmetrically, and they do not need to be arranged strictly symmetrically.

It can be understood that, as shown in FIG. 10, the first sub-feeding portion 1721 and the second sub-feeding portion 1722 may be distributed on both sides of the center line L5. Similarly, as shown in FIG. 9, the third sub-feeding portion 1821 and the fourth sub-feeding portion 1822 may also be distributed on both sides of the center line L5. Among them, the first sub-feeding portion 1721 and the second sub-feeding portion 1722, the third sub-feeding portion 1821 and the fourth sub-feeding portion 1822 may not be strictly symmetrical.

As shown in FIG. 11, FIG. 11 is a schematic diagram of electrical connections between the first vibrator unit and the second vibrator unit shown in FIG. 8. Among them, the first sub-coupling portion 1711 and the first sub-feeding portion 1721 may form a first feeding structure 173; the second sub-coupling portion 1712 and the second sub-feeding portion 1722 may form a second feeding structure 174; and the third The sub-coupling portion 1811 and the third sub-feeding portion 1821 may form the third feeding structure 183; the fourth sub-coupling portion 1812 and the fourth sub-feeding portion 1822 may form the fourth feeding structure 184.

It can be understood that the first feeding structure 173, the second feeding structure 174, the third feeding structure 183, and the fourth feeding structure 184 may be arranged around the center line L5. At this time, the first vibrator unit 140 The radiating arm 141, the second radiating arm 142, and the third radiating arm 151 and the fourth radiating arm 152 of the second vibrator unit 150 may each include a head end and an end. For example, the first radiating arm 141 includes a head end 1411 and an end 1412. Wherein, each feeding structure can be connected to the head end of a radiating arm, and each sub-radiating part can be connected to the end of a radiating arm.

Exemplarily, the head end 1411 of the first radiating arm 141 may be connected to the first sub-coupling portion 1711 of the first feeding structure 173, and the end 1412 of the first radiating arm 141 may be connected to the first sub-radiating portion 161. The head end of the second radiating arm 142 may be connected to the second sub-coupling part 1712 of the second feeding structure 174, and the end of the second radiating arm 142 may be connected to the second sub-radiating part 162. The head end of the third radiating arm 151 may be connected to the third sub-coupling part 1811 of the third feeding structure 183, and the end of the third radiating arm 151 may be connected to the third sub-radiating part 163. The head end of the fourth radiating arm 152 may be connected to the fourth sub-coupling part 1812 of the fourth feeding structure 184, and the end of the fourth radiating arm 152 may be connected to the fourth sub-radiating part 164.

It can be understood that the end of the radiating arm close to the center line L5 may be the head end of the radiating arm, and the end of the radiating arm away from the center line L5 may be the end. The head ends of the four radiating arms can be arranged around the centerline. In the embodiment of the application, the feeding structure is arranged at the head end of the radiating arm, and the sub-radiating part is arranged at the end of the radiating arm, so that the overall effective length of the radiating unit formed by the sub-radiating part and the radiating arm can be longer, and the current path Longer, which is more conducive to extending the bandwidth of the radiating unit to low frequencies.

It is understandable that the head end and the end of a radiating arm can be located on a line of symmetry to maximize the effective length of the radiating arm. Exemplarily as shown in FIG. 11, the first end 1411 and the end 1412 of the first radiating arm 141 are both located on the first line of symmetry L1.

Among them, in order to further realize the miniaturization of the dual-polarized antenna 100, please refer to FIG. 12, which is a schematic diagram of the second structure of the dual-polarized antenna according to an embodiment of the application. The dual-polarized antenna 100 of the embodiment of the present application may further include a reflector 190. The reflecting plate 190 may be located on the side of the first supporting plate 120 and the second supporting plate 130 away from the radiation plate 110, that is, the first supporting plate 120 and the second supporting plate 130 may be located between the radiation plate 110 and the reflecting plate 190 .

As shown in FIG. 12, the reflective plate 190 may be directly or indirectly connected to the first support plate 120 and the second support plate 130, respectively. For example, the first support plate 120 and the second support plate 130 may be connected to the reflector 190 by welding, riveting, or the like. It can be understood that the embodiment of the present application does not limit the connection manner of the reflective plate 190 with the first support plate 120 and the second support plate 130.

Please refer to FIG. 13, which is a schematic diagram of the structure of the reflector shown in FIG. 12. The reflective plate 190 in the embodiment of the present application may include a bottom plate 191 and a side wall 192, and the side wall 192 may be arranged around an edge of the bottom plate 191. The side wall 192 may be formed by extending the edge of the bottom plate 191 in a direction away from the bottom plate 191. For example, the side wall 192 may extend toward one side of the first supporting plate 120 and the second supporting plate 130; for another example, the side wall 192 may also It extends toward a direction away from the first support plate 120 and the second support plate 130. It can be understood that, in the dual-polarized antenna 100 of the embodiment of the present application, the reflector 190 can concentrate the signals radiated by the first dipole unit 140 and the second dipole unit 150 to improve the gain.

It can be understood that the reflector 190 can be used as a ground plane. That is, the first sub-coupling portion 1711, the second sub-coupling portion 1712 of the aforementioned first balun feeding structure 170, and the third sub-coupling portion 1811, the fourth sub-coupling portion of the second balun feeding structure 180 The ground terminal of 1812 can be directly connected to the reflector 190 by welding, riveting, etc., to achieve grounding.

Since the size of the reflector 190 is smaller than half the wavelength of the current frequency, it will cause the first vibrator unit 140 and the second vibrator unit 150 to generate rear radiation. Therefore, the size (length, width) of the bottom plate 191 of the reflector 190 in actual production is generally Will be greater than half the wavelength, for example, greater than the half wavelength of the 2496MHz frequency-60mm×60mm. However, the reflector 190 of the embodiment of the present application is provided with side walls 192 on the edge of the bottom plate 191, which can suppress backward radiation. Therefore, the size of the bottom plate 191 of the reflector 190 of the embodiment of the present application can be less than half the wavelength, for example, at 2496 MHz. The bottom can be 50mm×50mm, which is obviously lower than the minimum size of related technologies. Therefore, the structure of the dual-polarized antenna 100 of the embodiment of the present application can reduce the size of the reflector 190 while ensuring that the dual-polarized antenna 100 has better radio frequency performance, thereby further miniaturizing the antenna.

Wherein, the side wall 192 may surround one or more edges of the bottom plate 191, for example, four edges of the bottom plate 191 are surrounded in FIG. 13.

Wherein, the extending direction of the side wall 192 may extend in a direction away from the radiation plate 110. At this time, the side wall 192 may be formed by extending the edge of the bottom plate 191 in a direction away from the radiation plate 110. Of course, the extending direction of the side wall 192 may extend toward the direction of the radiating plate 110. In this case, the side wall 192 may be formed by extending the edge of the bottom plate 191 toward the direction of the radiating plate 110.

It is understandable that when the side wall 192 is formed by the edge of the bottom plate 191 facing the direction of the radiating plate 110, on the one hand, in the thickness direction, the side wall 192 does not occupy additional space, and the miniaturization of the dual-polarized antenna 100 can be realized. On the other hand, the distance between the side wall 192 and the reflector 190 is closer, and the side wall 192 can be coupled with the first vibrator unit 140 and the second vibrator unit 150, so that the first vibrator unit 140 and the second vibrator unit can be widened The bandwidth of the second vibrator unit 150.

It can be understood that when the side wall 192 is formed by the edge of the bottom plate 191 facing the direction of the radiation plate 110, the angle between the side wall 192 and the bottom plate 191 may be greater than or equal to 90 degrees but less than 180 degrees. For example, the included angle may be 90 degrees, 110 degrees, or 120 degrees. The embodiment of the present application does not limit the specific angle of the included angle. At this time, the side wall 192 forms an expanded shape, and the side wall 192 and the bottom plate 191 can reflect more backward radiation, so that the backward radiation can be better suppressed.

It is understandable that holes 193 can be reserved on the bottom plate 191 of the reflector 190 to facilitate the assembly of the reflector 190 and the customer front equipment 10.

It is understandable that the material of the reflector 190 can be stainless steel and nickel-plated, and the thickness of the reflector 190 can be 0.5mm. At this time, the reflector 190 can take into account the welding strength and structural strength to ensure the customer's front-end equipment 10 is complete. The reliability of the dual-polarized antenna 100 when dropped.

Based on the above structure, the size of the radiating surface of the dual-polarized antenna 100 of the embodiment of the present application (that is, the size of the first surface 111 of the radiating plate 110) can be 35mm×35mm, which is much smaller than the 42mm×42mm in the related art. The size of the dual-polarization antenna 100 can be miniaturized. In addition, the height of the first surface 111 (radiation surface) of the dual-polarized antenna 100 in the embodiment of the present application from the bottom plate 191 of the reflector 190 may be 15.2 mm, which is much smaller than 16.8 mm in the related art. The volume of the dual-polarized antenna 100 Significantly reduced and easy to integrate into CPE devices with limited space.

Based on the above structure, the dual-polarized antenna 100 of the embodiment of the present application has a relatively long effective length, can transmit low-frequency, intermediate-frequency, and high-frequency radio signals, and can transmit the 3th Generation mobile communication technology (3G) Signal, the 4th Generation mobile communication technology (4G) signal, and the 5th Generation mobile communication technology (5G) signal. Exemplarily, the dual-polarized antenna 100 of the embodiment of the present application can cover 4G B41 (2496MHZ to 2690MHz), B42 (3400MHZ to 3600MHz), and 5G n41 (2515MHZ to 2675MHz), n77 (3300MHZ to 4200MHZ), n78 (3300MHZ to 3800MHZ), n79 (4400MHZ to 5000MHZ) and so on.

Based on the above structure, the dual-polarized antenna 100 of the embodiment of the present application has good isolation. Please refer to FIG. 14, which is a graph of S21 parameters of the first dipole unit and the second dipole unit of the dual-polarized antenna according to an embodiment of the application. It can be seen from Figure 14 that the dual-polarized antenna 100 is between 2.49 GHz and 4.900 GHz, and the isolation between the first element 140 and the second element 150 of the dual-polarized antenna 100 is greater than 24 dB, which can be reduced by two. For the correlation between the two, when the dual-polarized antenna 100 is used for multiple-input multiple-output (MIMO) transmission, it can increase the rate of MIMO transmission.

Based on the above structure, in order to improve the radiation efficiency of the dual-polarized antenna 100, at least one of the radiation plate 110, the first support plate 120, and the second support plate 130 may be made of polytetrafluoroethylene (polytetrafluoroethylene, abbreviated as PTFE), The radiation plate 110, the first support plate 120 and the second support plate 130 made of PTFE material can effectively reduce the dielectric loss at frequencies above 3.8 GHz, and can improve the radiation efficiency of the first vibrator unit 140 and the second vibrator unit 150.

Exemplarily, please refer to FIG. 15, which is a graph of radiation efficiency of a dual-polarized antenna provided by an embodiment of the application. It can be seen from FIG. 15 that when the frequency of the radio frequency signal transmitted by the dual-polarized antenna 100 is above 3.8 GHz, the measured efficiency of the dual-polarized antenna 100 can be greater than 70%. Therefore, the dual-polarized antenna 100 of the embodiment of the present application It can fully meet the transmission requirements of 5G signals.

Based on the above structure, the dual-polarized antenna 100 of the embodiment of the present application does not reduce the gain of the antenna on the basis of satisfying miniaturization. Please refer to FIG. 16 and FIG. 17. FIG. 16 is the first type of three-dimensional radiation pattern of the dual-polarized antenna provided by an embodiment of the application. Fig. 17 is a plane radiation pattern of the dual-polarized antenna shown in Fig. 16. It can be seen from FIG. 16 and FIG. 17 that when the dual-polarized antenna 100 transmits a radio frequency signal of 2.6 GHz, the gain of the dual-polarized antenna 100 can reach 7.3163 dB.

Please refer to FIG. 18 and FIG. 19. FIG. 18 is a second three-dimensional radiation pattern of the dual-polarized antenna provided by an embodiment of the application, and FIG. 19 is a planar radiation pattern of the dual-polarized antenna shown in FIG. 18. It can be seen from FIGS. 18 and 19 that when the dual-polarized antenna 100 transmits a radio frequency signal with a frequency of 3.5 GHz, the gain of the dual-polarized antenna 100 can reach 7.6277 dB.

Moreover, according to the antenna theory, when the distance between the radiation surface of the antenna and the reflector 190 is 1/4λ, its ideal gain is about 8.2dB. In the embodiment of the present application, when the dual-polarized antenna 100 radiates radio frequency signals in the 2.6 GHz frequency band, the height of the first surface 111 and the bottom plate 191 of the reflector 190 is 15.2 mm, which is only 0.115λ, which is much smaller than 1 under the ideal gain. /4λ, and the gain of the dual-polarized antenna 100 of the embodiment of the present application can reach 7.3dB to 7.6dB, which is not much different from the ideal gain of 8.2dB. Therefore, the dual-polarized antenna 100 of the embodiment of the present application satisfies the requirements of miniaturization. On the basis of the optimization, the gain of the antenna is not reduced, and the dual-polarized antenna 100 of the embodiment of the present application still has better radiation performance.

It should be understood that in the description of this application, terms such as "first" and "second" are only used to distinguish similar objects, and cannot be understood as indicating or implying relative importance or implicitly specifying the indicated technology The number of features.

The above provides a detailed introduction to the dual-polarized antenna and customer front-end equipment provided by the embodiments of the present application. Specific examples are used in this article to describe the principles and implementations of the application, and the descriptions of the above examples are only used to help understand the application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative work shall fall within the protection scope of this application. At the same time, for those skilled in the art, based on the idea of the application, there will be changes in the specific implementation and the scope of application. In summary, the content of this specification should not be construed as a limitation to the application.

Claims

A dual-polarized antenna, including:

A radiating plate, the radiating plate includes a first surface and a second surface that are oppositely arranged, and a first vibrator unit and a second vibrator unit with polarization directions orthogonal to each other are provided on the first surface;

A first supporting plate, the first supporting plate is connected to the second surface of the radiating plate;

The second support plate, the second support plate is connected to the second surface of the radiant plate, the second support plate and the first support plate are arranged orthogonally, the second support plate and the first support plate The supporting plate supports the radiant plate together; and

An antenna radiating part, the antenna radiating part is located on the first supporting plate and the second supporting plate, and the antenna radiating part is electrically connected to the first dipole unit and the second dipole unit, respectively.
The dual-polarized antenna according to claim 1, wherein the first dipole unit includes two radiating arms, the second dipole unit also includes two radiating arms, and the antenna radiating part includes four sub-radiating parts, Each of the sub-radiating parts is connected with one of the radiating arms to jointly radiate radio frequency signals.
The dual-polarized antenna according to claim 2, wherein each of the radiating arms includes a head end and an end, and the dual-polarized antenna further includes four feeding structures, and each of the feeding structures is connected to one At the head end of the radiating arm, each of the sub-radiating parts is connected to the end of one of the radiating arms.
The dual-polarized antenna according to claim 1, wherein each of the first dipole unit and the second dipole unit includes two radiating arms, and the dual-polarized antenna further includes:

A first balun feeding structure, the first balun feeding structure is connected to the first support plate, and the first balun feeding structure is electrically connected to the two radiating arms of the first vibrator unit, respectively , So that the currents flowing through the two radiating arms of the first vibrator unit are in the same direction; and

A second balun feeding structure, the second balun feeding structure is connected to the second support plate, and the second balun feeding structure is electrically connected to the two radiating arms of the second vibrator unit, respectively , So that the currents flowing through the two radiating arms of the second vibrator unit are in the same direction.
The dual-polarized antenna according to claim 4, wherein the first balun feeding structure comprises:

A first coupling part, one end of the first coupling part is electrically connected to the two radiating arms of the first vibrator unit, and the other end of the first coupling part is grounded; and

The first power feeder, one end of the first power feeder is used for electrical connection with a coaxial line, and the other end of the first power feeder is coupled to the first coupling part so as to flow through the The currents of the two radiating arms of the first vibrator unit are in the same direction.
The dual-polarized antenna according to claim 4, wherein the second balun feeding structure comprises:

A second coupling part, one end of the second coupling part is electrically connected to the two radiating arms of the second vibrator unit, and the other end of the second coupling part is grounded; and

The second power feeder, one end of the second power feeder is used for electrical connection with a coaxial line, and the other end of the second power feeder is coupled to the second coupling part so as to flow through the The currents of the two radiating arms of the second vibrator unit are in the same direction.
The dual-polarized antenna according to claim 1, wherein at least one of the radiating plate, the first supporting plate, and the second supporting plate comprises a polytetrafluoroethylene sheet.
The dual-polarized antenna according to claim 1, further comprising:

A reflecting plate, the first supporting plate and the second supporting plate are located between the radiation plate and the reflecting plate, and the reflecting plate is connected to the first supporting plate and the second supporting plate respectively;

Wherein, the reflecting plate includes a bottom plate and a side wall, and the side wall is arranged around an edge of the bottom plate.
The dual-polarized antenna according to claim 8, wherein the side wall is located between the bottom plate and the radiation plate.
The dual-polarized antenna according to claim 9, wherein the angle between the side wall and the bottom plate is greater than or equal to ninety degrees.
A customer front-end equipment, including:

Dual-polarized antenna; and

A circuit board, which is electrically connected to the dual-polarized antenna, so that the dual-polarized antenna transmits radio frequency signals;

Wherein, the dual-polarized antenna includes:

A radiating plate, the radiating plate includes a first surface and a second surface that are oppositely arranged, and a first vibrator unit and a second vibrator unit with polarization directions orthogonal to each other are provided on the first surface;

A first supporting plate, the first supporting plate is connected to the second surface of the radiating plate;

The second support plate, the second support plate is connected to the second surface of the radiant plate, the second support plate and the first support plate are arranged orthogonally, the second support plate and the first support plate The supporting plate supports the radiant plate together; and

An antenna radiating part, the antenna radiating part is located on the first supporting plate and the second supporting plate, and the antenna radiating part is electrically connected to the first dipole unit and the second dipole unit, respectively.
The customer front-end equipment according to claim 11, wherein the first dipole unit includes two radiating arms, the second dipole unit also includes two radiating arms, and the antenna radiating part includes four sub-radiating parts, Each of the sub-radiating parts is connected with one of the radiating arms to jointly radiate radio frequency signals.
The customer front-end equipment according to claim 12, wherein each of the radiating arms includes a head end and an end, the dual-polarized antenna further includes four feeding structures, and each of the feeding structures is connected to one At the head end of the radiating arm, each of the sub-radiating parts is connected to the end of one of the radiating arms.
The customer front-end equipment according to claim 11, wherein the first dipole unit and the second dipole unit each include two radiating arms, and the dual-polarized antenna further includes:

A first balun feeding structure, the first balun feeding structure is connected to the first support plate, and the first balun feeding structure is electrically connected to the two radiating arms of the first vibrator unit, respectively , So that the currents flowing through the two radiating arms of the first vibrator unit are in the same direction; and

A second balun feeding structure, the second balun feeding structure is connected to the second support plate, and the second balun feeding structure is electrically connected to the two radiating arms of the second vibrator unit, respectively , So that the currents flowing through the two radiating arms of the second vibrator unit are in the same direction.
The customer front-end equipment according to claim 14, wherein the first balun feeding structure comprises:

A first coupling part, one end of the first coupling part is electrically connected to the two radiating arms of the first vibrator unit, and the other end of the first coupling part is grounded; and

The first power feeder, one end of the first power feeder is used for electrical connection with a coaxial line, and the other end of the first power feeder is coupled to the first coupling part so as to flow through the The currents of the two radiating arms of the first vibrator unit are in the same direction.
The customer front-end equipment according to claim 14, wherein the second balun feeding structure comprises:

A second coupling part, one end of the second coupling part is electrically connected to the two radiating arms of the second vibrator unit, and the other end of the second coupling part is grounded; and

The second power feeder, one end of the second power feeder is used for electrical connection with a coaxial line, and the other end of the second power feeder is coupled to the second coupling part so as to flow through the The currents of the two radiating arms of the second vibrator unit are in the same direction.
The customer front-end equipment according to claim 11, wherein at least one of the radiant board, the first support board, and the second support board comprises a polytetrafluoroethylene sheet.
The customer front-end equipment according to claim 11, further comprising:

A reflecting plate, the first supporting plate and the second supporting plate are located between the radiation plate and the reflecting plate, and the reflecting plate is connected to the first supporting plate and the second supporting plate respectively;

Wherein, the reflecting plate includes a bottom plate and a side wall, and the side wall is arranged around an edge of the bottom plate.
The customer front-end equipment according to claim 18, wherein the side wall is located between the bottom plate and the radiant panel.
The customer front-end equipment according to claim 19, wherein the angle between the side wall and the bottom plate is greater than or equal to ninety degrees.