CN111525234A

CN111525234A - Dual-polarized antenna and customer front-end equipment

Info

Publication number: CN111525234A
Application number: CN202010491014.3A
Authority: CN
Inventors: 揭骏仁
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2020-06-02
Filing date: 2020-06-02
Publication date: 2020-08-11
Also published as: WO2021244158A1

Abstract

The embodiment of the application provides a dual polarized antenna and customer leading equipment, dual polarized antenna includes the radiation panel, first backup pad, second backup pad and antenna radiation portion, is equipped with the first oscillator unit and the second oscillator unit of the mutual quadrature of polarization direction on the radiation panel, first backup pad and second backup pad quadrature set up and support the radiation panel jointly, antenna radiation portion is located first backup pad and second backup pad, and, antenna radiation portion is connected with first oscillator unit and second oscillator unit electricity respectively. Therefore, the dual-polarized antenna can be miniaturized, and the assembly difficulty of the dual-polarized antenna can be reduced.

Description

Dual-polarized antenna and customer front-end equipment

Technical Field

The application relates to the technical field of antennas, in particular to a dual-polarized antenna and customer premises equipment.

Background

A Customer Premise Equipment (CPE) is a mobile signal access device that receives a mobile signal and forwards the mobile signal with a Wireless Fidelity (Wi-Fi). The number of mobile terminals capable of supporting simultaneous internet access is also large. The CPE can be widely applied to wireless network access in rural areas, towns, hospitals, units, factories, cells and the like, and the cost for laying a wire network can be saved.

When the distance is relatively long or there are many obstacles, signal blind spots are likely to occur in the coverage of the base station signal. In these blind spot corners, the terminal device, such as a smartphone, cannot receive the base station signal. The CPE can relay the base station signals for the second time, and the base station signals are changed into Wi-Fi signals to be provided for the equipment nearby. Compared with terminal equipment such as a smart phone and a notebook computer, the CPE antenna has stronger gain and higher power, and the signal transceiving capacity of the CPE antenna is stronger than that of the smart phone. So, there are places where the smartphone has no signal and the CPE may have a signal. The CPE can change network signals of an operator into Wi-Fi signals, and more devices such as a smart phone, a tablet computer and a notebook computer can surf the internet by means of the CPE.

The CPE has a limited internal space and there is often a certain requirement on the volume of the CPE in order to improve its portability. However, the volume of the CPE is limited, which affects the space inside the CPE where the antenna is installed, and thus the performance of the CPE.

Disclosure of Invention

The embodiment of the application provides a dual-polarized antenna and customer premises equipment, which can realize the miniaturization of the antenna.

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

the radiation plate comprises a first surface and a second surface which are oppositely arranged, and a first oscillator unit and a second oscillator unit with mutually orthogonal polarization directions are arranged on the first surface;

a first support plate connected to the second surface of the radiation plate;

a second support plate connected to a second surface of the radiation plate, the second support plate being disposed orthogonally to the first support plate, the second support plate and the first support plate supporting the radiation plate together; and

the antenna radiation part is positioned on the first supporting plate and the second supporting plate and is respectively electrically connected with the first oscillator unit and the second oscillator unit.

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

a dual-polarized antenna comprising a dual-polarized antenna as described above; and

a circuit board; the circuit board is electrically connected with the dual-polarized antenna so that the dual-polarized antenna transmits radio frequency signals.

The utility model provides a dual polarized antenna and customer leading equipment, dual polarized antenna includes the radiation plate, first backup pad, second backup pad and antenna radiation portion, be equipped with the first oscillator unit and the second oscillator unit of the mutual quadrature of polarization direction on the radiation plate, first backup pad and second backup pad quadrature set up and support the radiation plate jointly, antenna radiation portion is located first backup pad and second backup pad, and, antenna radiation portion is connected with first oscillator unit and second oscillator unit electricity respectively. Based on this, the dual polarized antenna of this application embodiment, antenna radiation portion can increase the radiation length of first oscillator unit and second oscillator unit, and under the unanimous prerequisite of cover frequency channel, the area of first oscillator unit and second oscillator unit can be less to make the volume of whole dual polarized antenna less, dual polarized antenna can realize the miniaturization. And, set up antenna radiation portion in first backup pad and second backup pad, need not additionally set up the carrier of antenna radiation portion, saved dual polarized antenna's structure, simultaneously, set up antenna radiation portion in the first backup pad and the second backup pad that the quadrature set up, do not need additionally to debug the position of antenna radiation portion and just can guarantee that first oscillator unit and second oscillator unit after the antenna radiation portion is connected to the electricity still orthogonal setting to the equipment degree of difficulty of dual polarized antenna has been reduced.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings used in the description of the embodiments will be briefly introduced below. It is obvious that the drawings in the following description are only some embodiments of the application, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.

Fig. 1 is a schematic structural diagram of a client front-end device according to an embodiment of the present application.

Fig. 2 is a schematic view of an application scenario of a client front-end device according to an embodiment of the present application.

Fig. 3 is a schematic view of a first structure of a dual-polarized antenna provided in an embodiment of the present application.

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

Fig. 5 is a first schematic structural diagram of the first and second vibrator units shown in fig. 3.

Fig. 6 is a second configuration diagram of the first and second transducer units shown in fig. 3.

Fig. 7 is a schematic diagram illustrating connection between the antenna radiation part shown in fig. 3 and the first and second element units.

Fig. 8 is an exploded view of the dual polarized antenna shown in fig. 3.

Fig. 9 is a schematic diagram of a first directional structure of the first balun feed structure and the second balun feed structure shown in fig. 8.

Fig. 10 is a second directional structural diagram of the first balun feed structure and the second balun feed structure shown in fig. 8.

Fig. 11 is an electrical connection diagram of the first and second transducer units shown in fig. 8.

Fig. 12 is a schematic diagram of a second structure of a dual-polarized antenna provided in an embodiment of the present application.

Fig. 13 is a schematic structural view of the reflection plate shown in fig. 12.

Fig. 14 is a S21 parameter graph of the first element unit and the second element unit of the dual-polarized antenna provided in the embodiment of the present application.

Fig. 15 is a radiation efficiency graph of a dual-polarized antenna provided in an embodiment of the present application.

Fig. 16 is a first three-dimensional radiation pattern of the dual-polarized antenna provided in the embodiment of the present application.

Fig. 17 is a planar radiation pattern of the dual polarized antenna shown in fig. 16.

Fig. 18 is a second perspective radiation pattern of the dual-polarized antenna according to the embodiment of the present application.

Fig. 19 is a planar 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 with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The embodiment of the application provides a dual-polarized antenna and customer premises equipment. The details will be described below separately. Wherein the dual polarized antenna can be arranged in the customer premises equipment. The client front-end device may be a device having a function of relaying a base station signal for the second time and converting the received signal into a Wi-Fi signal to be provided to a device nearby, and for example, the wireless router, the repeater, the telephone, the optical modem, the computer, and the like may all be the client front-end device according to the embodiment of the present application.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a client front-end device according to an embodiment of the present disclosure. Customer premises equipment 10 may include dual polarized antenna 100, housing 200, and circuit board 300. Where circuit board 300 and dual-polarized antenna 100 may both be disposed within housing 200, dual-polarized antenna 100 may include one or more, e.g., four dual-polarized antennas 100 are disposed in fig. 1. A radio frequency circuit may be disposed on the circuit board 300, and after the dual-polarized antenna 100 is electrically connected to the circuit board 300, the dual-polarized antenna 100 may wirelessly communicate with a base station and other wireless devices under the control of the radio frequency circuit, so as to implement transmission of radio frequency signals.

For example, referring to fig. 2 in conjunction with fig. 1, fig. 2 is a schematic view of an application scenario of a client front-end device according to an embodiment of the present application. When the signal of the base station 20 is weak, the customer premises equipment 10 according to the embodiment of the present application may control the dual-polarized antenna 100 to perform secondary relay on the signal of the base station 20, and the customer premises equipment 10 may change the signal received by the dual-polarized antenna 100 into a Wi-Fi signal, and provide the Wi-Fi signal to the terminal equipment 30, such as a mobile phone, a tablet computer, a notebook computer, etc., near the customer premises equipment through the dual-polarized antenna 100.

In order to improve the portability of the customer premises equipment 10, the volume of the customer premises equipment 10 tends to be set small, which causes the volume of the dual polarized antenna 100 built inside the housing 200 of the customer premises equipment 10 to be also small. Based on this, please refer to fig. 3, fig. 3 is a schematic diagram of a first structure of a dual-polarized antenna provided in the embodiment of the present application.

The dual polarized antenna 100 of the embodiment of the present application includes a radiation plate 110, a first support plate 120, a second support plate 130, a first element unit 140, a second element unit 150, and an antenna radiation portion 160. The radiation plate 110 includes a first surface 111 and a second surface 112 disposed opposite to each other, the first and

second transducer elements

140 and 150 are disposed on the first surface 111, and polarization directions of the first and

second transducer elements

140 and 150 are orthogonal to each other.

Wherein the first support plate 120 and the second support plate 130 are positioned at one side of the second surface 112 of the radiation plate 110, the first support plate 120 is orthogonally disposed to the second support plate 130, and the first support plate 120 and the second support plate 130 are also coupled to the second surface 112, so that the first support plate 120 and the second support plate 130 can support the radiation plate 110 together. The antenna radiation part 160 is simultaneously located on the first support plate 120 and the second support plate 130, for example, a portion of the antenna radiation part 160 is located on the first support plate 120, and another portion of the antenna radiation part 160 is located on the second support plate 130. The antenna radiation portion 160 is electrically connected to the first and

second element units

140 and 150, respectively, so that the antenna radiation portion 160, the first and

second element units

140 and 150 radiate radio frequency signals together.

In the dual-polarized antenna 100 of the embodiment of the present application, the antenna radiation portion 160 can increase the radiation length of the first element unit 140 and the second element unit 150, on one hand, on the premise that the coverage frequency bands are consistent, the areas of the first element unit 140 and the second element unit 150 can be smaller, so that the volume of the whole dual-polarized antenna 100 is smaller, and the dual-polarized antenna 100 can be miniaturized; on the other hand, the first element unit 140 and the second element unit 150 with increased lengths can cover radio frequency signals of a low frequency band, so that the frequency band of the dual-polarized antenna 100 can be expanded. Moreover, in the embodiment of the present application, the antenna radiation portion 160 is disposed on the first support plate 120 and the second support plate 130, and there is no need to additionally dispose a carrier of the antenna radiation portion 160, so that the structure of the dual-polarized antenna 100 is simplified, meanwhile, the antenna radiation portion 160 is disposed on the first support plate 120 and the second support plate 130 which are orthogonally disposed, and it is ensured that the first oscillator unit 140 and the second oscillator unit 150 which are electrically connected to the antenna radiation portion 160 are still orthogonally disposed without additionally debugging the position of the antenna radiation portion 160, thereby reducing the assembly difficulty of the dual-polarized antenna 100.

The first support plate 120 and the second support plate 130 can be orthogonally connected together by riveting, screwing, or the like, and of course, the first support plate 120 and the second support plate 130 can also be orthogonally connected together by clamping.

For example, referring to fig. 4, fig. 4 is a schematic connection diagram of the first support plate and the second support plate shown in fig. 3. The lower extreme of first backup pad 120 can set up a first breach 121, the upper end of second backup pad 130 can set up a second breach 131, the position of first breach 121 and second breach 131 can match, so that first backup pad 120 can the inlay card in second breach 131 and second backup pad 130 can the inlay card in first breach 121, the upper end and the lower extreme of first backup pad 120 and second backup pad 130 can all flush, thereby can realize the quadrature joint of first backup pad 120 and second backup pad 130.

It should be noted that the connection manner of the first support plate 120 and the second support plate 130 in the embodiment of the present application is not limited thereto, and other manners that can achieve orthogonal connection between the first support plate 120 and the second support plate 130 are within the scope of the embodiment of the present application.

It is understood that, as shown in fig. 3, the lengths of the first and

second support plates

120 and 130 may be equal to the diagonal length of the radiation plate 110. That is, the first support plate 120 may be disposed along one diagonal line of the radiation plate 110, and the second support plate 130 may be disposed along the other diagonal line of the radiation plate 110, so that the first support plate 120 and the second support plate 130 of the embodiment of the present application have a larger contact area with the radiation plate 110, and can better support the radiation plate 110.

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

Referring to fig. 3 again, the first and

second vibrator units

140 and 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 and

second transducer elements

140 and 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 and

second vibrator units

140 and 150 may be formed on the first surface 111 by silver paste spraying. It is to be understood that the connection form of the first transducer element 140 and the second transducer element 150 is not particularly limited in the embodiments of the present application.

Wherein the first vibrator unit 140 may be a dipole vibrator unit. For example, referring to fig. 5, fig. 5 is a first structural schematic diagram of the first oscillator unit and the second oscillator unit shown in fig. 3. The first element unit 140 may include two radiation arms, for example, a first radiation arm 141 and a second radiation arm 142. As shown in fig. 5, the first radiating arm 141 and the second radiating arm 142 may be located on the same radiating plane, and the first radiating arm 141 may be disposed axially symmetrically with respect to a first symmetry line L1, and the second radiating arm 142 may also be disposed axially symmetrically with respect to the first symmetry line L1, and meanwhile, the first radiating arm 141 and the second radiating arm 142 may also be disposed centrally symmetrically with respect to an origin O, so that the first element unit 140 formed by the first radiating arm 141 and the second radiating arm 142 is a dipole element unit.

Similarly, the second transducer element 150 may be a dipole transducer element. As shown in fig. 5, the second element unit 150 may include two radiation arms, for example, a third radiation arm 151 and a fourth radiation 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 disposed axisymmetrically with respect to a second line of symmetry L2, and the fourth radiating arm 152 may also be disposed axisymmetrically with respect to the second line of symmetry L2. Meanwhile, the third and

fourth radiation arms

151 and 152 may also be arranged centrosymmetrically with respect to the origin O, so that the second element unit 150 formed by the third and

fourth radiation arms

151 and 152 is a dipole element unit.

The polarization direction of the first transducer element 140 and the polarization direction of the second transducer element 150 are orthogonal to each other. For example, 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 angle between the first symmetry line L1 and the second symmetry line L2 may be 90 degrees. At this time, the first radiation arm 141, the second radiation arm 142, the third radiation arm 151, and the fourth radiation arm 152 are arranged in a mirror image of each other. That is, the first radiation arm 141 and the third radiation arm 151, and the second radiation arm 142 and the fourth radiation arm 152 may be axisymmetrically disposed with respect to the third line of symmetry L3, and the first radiation arm 141 and the fourth radiation arm 152, and the second radiation arm 142 and the third radiation arm 151 may be axisymmetrically disposed with respect to the fourth line of symmetry L4.

It is understood that the angle between the first symmetry line L1 and the third symmetry line L3 may be-45 degrees, and the angle between the second symmetry line L2 and the third symmetry line L3 may be +45 degrees, so that the first element unit 140 and the second element unit 150 may form a dual-polarized antenna radiator with ± 45 degrees. In the dual-polarized antenna radiator, the plus or minus 45-degree polarization orthogonality can ensure that the isolation between the first element unit 140 and the second element unit 150 at plus or minus 45 degrees meets the requirement of intermodulation on the isolation between the antennas (more than or equal to 30dB), and the gain of the antenna during diversity signal receiving can be effectively ensured.

The first and

second transducer elements

140 and 150 may have various shapes such as a petal shape, a square shape, a butterfly shape, a circular shape, and a triangular shape. For example, the first and

second transducer elements

140 and 150 in fig. 5 are rectangular in shape. For another example, referring to fig. 6, fig. 6 is a second structural schematic diagram of the first oscillator unit and the second oscillator unit shown in fig. 3. As shown in fig. 6, the first transducer element 140 and the second transducer element 150 in fig. 6 have petal shapes. It is to be understood that the shape of the first transducer element 140 and the second transducer element 150 is not limited in the embodiments of the present application.

The first vibrator unit 140 and the second vibrator unit 150 may be provided with a hollow structure or a groove structure. For example, one or more groove structures may be formed on the first and

second transducer elements

140 and 150 by etching, cutting, or the like. Alternatively, as shown in fig. 5 and 6, for example, a first through hole 143 penetrating the thickness direction of the radiation plate 110 may be provided in the first radiation arm 141 of the first vibrator unit 140, and a second through hole 144 penetrating the thickness direction of the radiation plate 110 may be provided in the second radiation arm 142 of the first vibrator unit 140. Similarly, the third radiating arm 151 of the second oscillator unit 150 may be provided with a third through hole 153 penetrating the thickness direction of the radiating plate 110, and the fourth radiating arm 152 of the second oscillator unit 150 may be provided with a fourth through hole 154 penetrating the thickness direction of the radiating plate 110.

The shapes and sizes of the first through hole 143, the second through hole 144, the third through hole 153, and the fourth through hole 154 may be completely the same, and the first through hole 143, the second through hole 144, the third through hole 153, and the fourth through hole 154 may also be arranged in a mirror image manner in pairs, so as to ensure that the first radiation arm 141, the second radiation arm 142, the third radiation arm 151, and the fourth radiation arm 152 are also arranged in a mirror image manner in pairs.

It is 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 any shape of through hole structure, such as a circle, a ring, a triangle, a rectangle, a butterfly, a petal, etc., and the structure of the through holes is not particularly limited in the embodiments of the present application.

It is to be understood 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 is not limited to one, and may include a plurality. As shown in fig. 5, the number of the first through holes 143, the second through holes 144, the third through holes 153, and the fourth through holes 154 is 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 may be the same, so as to ensure that the first radiation arm 141, the second radiation arm 142, the third radiation arm 151, and the fourth radiation arm 152 are also arranged in a mirror image manner in pairs. The dual-polarized antenna 100 of the embodiment of the application is provided with the through hole structures on the first oscillator unit 140 and the second oscillator unit 150, and due to the existence of the through hole structures, the first oscillator unit 140 and the second oscillator unit 150 can generate a capacitance effect at the edges of the through hole structures, so that the working frequency bands of the first oscillator unit 140 and the second oscillator unit 150 can be expanded to a high frequency band.

Based on the above-mentioned structure of the first and

second element units

140 and 150, please refer to fig. 7, fig. 7 is a schematic connection diagram of the antenna radiation part shown in fig. 3 and the first and second element units. The antenna radiation part 160 of the embodiment of the present application may include four sub-radiation parts to correspond to two radiation arms of the first element unit 140 and two radiation arms of the second element unit 150, and each sub-radiation part may be connected to one radiation arm so that one radiation arm and one sub-radiation part form an integral body and commonly 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, wherein the first sub-radiation part 161 may be electrically connected with the first radiation arm 141 and form a first radiation whole; the second sub-radiating portion 162 may be electrically connected to the second radiating arm 142 and form a second radiating whole; the third sub radiating part 163 may be electrically connected to the third radiating arm 151 and form a third radiating whole; the fourth sub radiating portion 164 may be electrically connected to the fourth radiating arm 152 and form a fourth radiating entirety.

It can be understood that the first radiation entity, the second radiation entity, the third radiation entity and the fourth radiation entity may also be arranged in a mirror image manner in pairs, so that the first radiation entity, the second radiation entity, the third radiation entity and the fourth radiation entity may still form a dual-polarized antenna radiator.

In theory, the shapes and sizes of the first sub-radiating portion 161, the second sub-radiating portion 162, the third sub-radiating portion 163, and the fourth sub-radiating portion 164 should be completely the same. However, in practical applications, the shapes and sizes of the first sub-radiating portion 161, the second sub-radiating portion 162, the third sub-radiating portion 163 and the fourth sub-radiating portion 164 may be approximately the same. That is to say, in practical applications, the first radiation entity, the second radiation entity, the third radiation entity and the fourth radiation entity are arranged in a mirror image manner in pairs, so that the dual-polarized antenna 100 can be arranged. For example, in practical use, the lengths of the first sub radiating portion 161, the second sub radiating portion 162, the third sub radiating portion 163 and the fourth sub radiating portion 164 may be inconsistent within a certain range.

It is understood that, since the first element unit 140 including the first radiation arm 141 and the second radiation arm 142 and the second element unit 150 including the third radiation arm 151 and the fourth radiation arm 152 are disposed on the first surface 111 of the radiation plate 110; and the antenna radiation part 160 including the first sub-radiation part 161, the second sub-radiation part 162, the third sub-radiation part 163 and the fourth sub-radiation part 164 is disposed at the second surface 112 side of the radiation plate 110. Therefore, when the antenna radiation part 160 is electrically connected to the first and

second element units

140 and 150, four slits (not shown) may be formed in the radiation plate 110 and penetrate through the first and

second surfaces

111 and 112, and the four slits may be disposed corresponding to the four sub-radiation parts, so that each sub-radiation part of the antenna radiation part 160 may pass through one slit and be directly or indirectly connected to one radiation arm on the first surface 111, for example, welded together, thereby achieving the electrical connection.

In the dual-polarized antenna 100 of the embodiment of the present application, the antenna radiation portion 160 is electrically connected to the first element unit 140 and the second element unit 150 through the slot on the radiation plate 110, on one hand, under the condition that the space of the CPE device is certain, the antenna radiation portion 160 of the embodiment of the present application can increase the length of the thickness of one radiation plate 110, so that the antenna radiation portion 160 is longer to cover signals of a lower frequency band; on the other hand, under the condition that the length of the antenna radiation part 160 is fixed, the antenna radiation part 160 of the embodiment of the present application can hide the length of one radiation part thickness without occupying extra space, so that the height of the dual-polarized antenna 100 can be smaller, and the size of the dual-polarized antenna 100 can be made smaller.

Based on the above-mentioned structure of the antenna radiation portion 160, the first element unit 140, and the second element unit 150, please refer to fig. 8 in combination with fig. 3, and fig. 8 is an exploded schematic diagram of the dual-polarized antenna shown in fig. 3. 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.

The first balun feed structure 170 may be directly or indirectly connected to the first support plate 120, for example, the first balun feed structure 170 may be formed on a side surface of the first support plate 120 by etching, pasting, or the like. The first balun feed structure 170 may be electrically connected to the two radiating arms of the first element unit 140, respectively, so that currents flowing through the two radiating arms of the first element unit 140 are in the same direction. Likewise, the second balun feed structure 180 may be directly or indirectly connected to the second support plate 130, for example, the second balun feed structure 180 may be formed on a side of the second support plate 130 by etching, patch, or the like. The second balun feed structure 180 may be electrically connected to the two radiating arms of the second element unit 150, respectively, so that the currents flowing through the two radiating arms of the second element unit 150 are in the same direction.

When the first element unit 140 and the second element unit 150 are dipole antennas, according to the antenna theory, the dipole antennas belong to balanced antennas, and the common feeding coaxial cables belong to unbalanced transmission lines, if the dipole antennas are directly electrically connected to the coaxial cables, high-frequency currents flow through the outer skins of the coaxial cables, and the currents of the two radiating arms of the dipole antennas are in different directions, so that the radiation of the antennas is affected. In the dual-polarized antenna 100 of the embodiment of the present application, through the first balun feed structure 170 and the second balun feed structure 180, currents flowing through the two radiating arms of the first element unit 140 are in the same direction, and currents flowing through the two radiating arms of the second element unit 150 are also in the same direction, so that the radiation performance of the antenna can be ensured.

Wherein the first balun feed structure 170 and the second balun feed structure 180 may each comprise a coupling portion and a feeding portion. For example, please refer to fig. 9 and fig. 10 in combination with fig. 8, fig. 9 is a schematic diagram of a first directional structure of the first balun feed structure and the second balun feed structure shown in fig. 8, and fig. 10 is a schematic diagram of a second directional structure of the first balun feed structure and the second balun feed structure shown in fig. 8.

As shown in fig. 9 and 10, the first balun feed structure 170 may include a first coupling portion 171 and a first feeding portion 172. The first coupling part 171 and the first feeding part 172 may be respectively connected to two opposite sides of the first support plate 120, for example, the first coupling part 171 may be directly or indirectly connected to a first side of the first support plate 120, and the first feeding part 172 may be directly or indirectly connected to a second side of the first support plate 120, wherein the first side and the second side are oppositely disposed.

It is understood that one end of the first coupling portion 171 may be electrically connected to the two radiating arms of the first vibrator unit 140, respectively, and the other end of the first coupling portion 171 may be grounded. One end of the first feeding portion 172 may be used to electrically connect with the inner core of the coaxial line, and the other end of the first feeding portion 172 may be coupled with the first coupling portion 171, while the outer core of the coaxial line is grounded. At this time, the coaxial line, the first feeding portion 172, the first coupling portion 171, and the radiating arms of the first oscillator unit 140 may form a complete signal loop, the coaxial line feeds a radio frequency signal into the first feeding portion 172, the first feeding portion 172 couples the radio frequency signal to the first coupling portion 171 through electromagnetic coupling, and the first coupling portion 171 transfers the radio frequency signal to the two radiating arms of the first oscillator unit 140, so that currents flowing through the two radiating arms of the first oscillator unit 140 are in the same direction, and the currents can transmit the radio frequency signal 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 feed 172 may include two sub-sections, for example, a first sub-feed 1721 and a second sub-feed 1722. One end of the first sub-feeding portion 1721 is electrically connected to the coaxial core, the other end of the first sub-feeding portion 1721 is coupled to the first sub-coupling portion 1711, one end of the first sub-coupling portion 1711 is electrically connected to the first radiating arm 141 of the first oscillator unit 140, 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. Similarly, one end of the second sub-feeding portion 1722 is electrically connected to the coaxial core, the other end of the second sub-feeding portion is coupled to the second sub-coupling portion 1712, one end of the second sub-coupling portion 1712 is electrically connected to the second radiating arm 142 of the first oscillator unit 140, 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 may form a second feeding structure.

As shown in fig. 8 to 10, the second balun feed structure 180 may include a second coupling portion 181 and a second feeding portion 182. The second coupling part 181 and the second feeding part 182 may be respectively connected to opposite sides of the second support plate 130, for example, the second coupling part 181 may be directly or indirectly connected to a third side of the second support plate 130, and the second feeding part 182 may be directly or indirectly connected to a fourth side of the second support plate 130, wherein the third side and the fourth side are oppositely disposed.

It is 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, respectively, and the other end of the second coupling portion 181 may be grounded. The structure of the second feeding portion 182 may also be the same as that of the first feeding portion 172, for example, one end of the second feeding portion 182 may be used to be electrically connected to the inner core of the coaxial line, and the other end of the second feeding portion 182 may be connected to the second coupling portion 181, while the outer core of the coaxial line is grounded. At this time, the coaxial line, the second feeding portion 182, the second coupling portion 181 and one radiating arm of the second oscillator unit 150 may form a complete signal loop, so that the currents flowing through the two radiating arms of the second oscillator unit 150 are in the same direction, and the currents may jointly transmit the radio frequency signal.

As shown in fig. 10, the second coupling part 181 may include a third sub-coupling part 1811 and a fourth sub-coupling part 1812. As shown in fig. 9, the second feed 182 may include a third sub-feed 1821 and a fourth sub-feed 1822. One end of the third sub-feeding portion 1821 is electrically connected to the coaxial core, the other end of the third sub-feeding portion is coupled to the third sub-coupling portion 1811, one end of the third sub-coupling portion 1811 is electrically connected to the third radiating arm 151 of the second element unit 150, 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 may form a third feeding structure. Similarly, one end of the fourth sub-feeding portion 1822 is electrically connected to the coaxial core, the other end of the fourth sub-feeding portion is coupled to the fourth sub-coupling portion 1812, one end of the fourth sub-coupling portion 1812 is electrically connected to the fourth radiating arm 152 of the second element unit 150, 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 may form a fourth feeding structure.

In the dual-polarized antenna 100 of the embodiment of the 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 one hand, the arrangement space of the first balun feed structure 170 and the second balun feed structure 180 does not need to be additionally reserved, so that the internal space of the customer front-end device 10 is saved; on the other hand, the first and

second support plates

120 and 130 have a larger area, and the first and second

balun feed structures

170 and 180 may be disposed at any position of the first and

second support plates

120 and 130, so as to facilitate adjustment of the frequencies and gains of the first and

second oscillator units

140 and 150. Moreover, after the first balun feed structure 170 and the second balun feed structure 180 of the embodiment of the present application are respectively disposed on the first support plate 120 and the second support plate 130 which are orthogonally disposed, the first balun feed structure and the second balun feed structure may also be orthogonally disposed, so that the difficulty in mounting the first balun feed structure and the second balun feed structure may be reduced.

It is understood that the first to fourth sub-couplings and the first to fourth sub-feeding portions of the embodiments of the present application may be formed on the first and

second support plates

120 and 130 by etching, bonding, or the like. The first sub-coupling portion 1711 and the second sub-coupling portion 1712 may be two independent portions, and the third sub-coupling portion 1811 and the fourth sub-coupling portion 1812 may also be two independent portions. Alternatively, the first sub-coupling portion 1711 and the second sub-coupling portion 1712 may be integrated, and the third sub-coupling portion 1811 and the fourth sub-coupling portion 1812 may be integrated, so that the formation processes of the first coupling portion 171 and the second coupling portion 181 may be simplified.

Likewise, the first sub-feed 1721 and the second sub-feed 1722 may be two separate parts, as well as the third sub-feed 1821 and the fourth sub-feed 1822. Alternatively, the first sub feeding unit 1721 and the second sub feeding unit 1722 may be integrated, and the third sub feeding unit 1821 and the fourth sub feeding unit 1822 may be integrated, so that the forming process of the first sub feeding unit 1721 and the second sub feeding unit 1722 may be simplified.

It is understood that, as shown in fig. 9, the first sub-coupling part 1711 and the second sub-coupling part 1712 may be symmetrically disposed with respect to 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 disposed about the center line L5. Also, 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 fig. 9 and 10 to increase the area of the sub-coupling portions. 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 thereto, and other rectangular shapes, circular shapes and butterfly shapes may be used, which is not limited by the embodiment of the present application.

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 arranged exactly symmetrically. Similarly, the third sub-coupling portion 1811 and the fourth sub-coupling portion 1812 only need to be arranged approximately symmetrically, and do not need to be arranged exactly symmetrically.

It is understood that the first and second

sub feeding portions

1721 and 1722 may be distributed on both sides of the center line L5 as shown in fig. 10. Likewise, as shown in fig. 9, the third sub feeding portion 1821 and the fourth sub feeding portion 1822 may be distributed on two sides of the center line L5. The first sub-feed 1721, the second sub-feed 1722, the third sub-feed 1821 and the fourth sub-feed 1822 may not be strictly symmetrical.

As shown in fig. 11, fig. 11 is a schematic electrical connection diagram of the first and second transducer units shown in fig. 8. Wherein the first sub-coupling portion 1711 and the first sub-feeding portion 1721 may form the first feeding structure 173; the second sub-coupling portion 1712 and the second sub-feeding portion 1722 may form the second feeding structure 174; the third sub-coupling section 1811 and the third sub-feeding section 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 is understood that the first feed structure 173, the second feed structure 174, the third feed structure 183, and the fourth feed structure 184 may be disposed around the center line L5, and at this time, the first radiation arm 141, the second radiation arm 142 of the first element unit 140, and the third radiation arm 151 and the fourth radiation arm 152 of the second element unit 150 may each include a head end and a tail end. For example, the first radiating arm 141 includes a head end 1411 and a tail end 1412. Wherein each feed structure may be connected to a head end of one of the radiating arms, and each sub-radiating portion may be connected to a tail end of one of the radiating arms.

Illustratively, 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 tail 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 portion 1712 of the second feeding structure 174, and the tail end of the second radiating arm 142 may be connected to the second sub-radiating portion 162. A head end of the third radiation arm 151 may be connected to the third sub-coupling portion 1811 of the third feed structure 183, and a tail end of the third radiation arm 151 may be connected to the third sub-radiation portion 163. A head end of the fourth radiation arm 152 may be connected to the fourth sub-coupling portion 1812 of the fourth feeding structure 184, and a tail end of the fourth radiation arm 152 may be connected to the fourth sub-radiation portion 164.

It is understood that the end of the radiating arm near the centerline L5 may be a head end of the radiating arm and the end of the radiating arm away from the centerline L5 may be a tail end. The head ends of the four radiating arms may be arranged around the centre line. The embodiment of the application arranges the feed structure at the head end of the radiation arm and arranges the sub-radiation part at the tail end of the radiation arm, so that the whole effective length of the radiation unit formed by the sub-radiation part and the radiation arm is longer, and the current path is longer, thereby being more beneficial to the low-frequency extension bandwidth of the radiation unit.

It will be appreciated that the head and tail ends of a radiating arm may be located on a line of symmetry to maximize the effective length of the radiating arm. As shown in fig. 11, the head end 1411 and the tail end 1412 of the first radiating arm 141 are both located on the first line of symmetry L1.

Please refer to fig. 12, wherein fig. 12 is a schematic diagram of a second structure of the dual-polarized antenna provided in the embodiment of the present application, in order to further realize miniaturization of the dual-polarized antenna 100. The dual polarized antenna 100 of the embodiment of the present application may further include a reflection plate 190. The reflection plate 190 may be located at a side of the first and

second support plates

120 and 130 away from the radiation plate 110, that is, the first and

second support plates

120 and 130 may be located between the radiation plate 110 and the reflection plate 190.

As shown in fig. 12, the reflection plate 190 may be directly or indirectly connected to the first and

second support plates

120 and 130, respectively. For example, the first support plate 120 and the second support plate 130 may be coupled to the reflection plate 190 by welding, riveting, or the like. It is to be understood that the connection manner of the reflection plate 190 and the first and

second support plates

120 and 130 is not limited in the embodiments of the present application.

Referring to fig. 13, fig. 13 is a schematic structural diagram of the reflection plate shown in fig. 12. The reflective plate 190 of the embodiment of the present application may include a bottom plate 191 and a sidewall 192, and the sidewall 192 may be disposed around an edge of the bottom plate 191. The sidewalls 192 may be formed by edges of the bottom plate 191 extending in a direction away from the bottom plate 191, for example, the sidewalls 192 may extend in a direction toward one side of the first and

second support plates

120 and 130; for another example, the side wall 192 may also extend in a direction toward a side away from the first and

second support plates

120 and 130. It is understood that in the dual-polarized antenna 100 of the embodiment of the present application, the reflection plate 190 is disposed to concentrate the signals radiated by the first element unit 140 and the second element unit 150, so as to improve the gain.

It is understood that the reflective plate 190 may serve as a ground plane. That is, the grounding ends of the first sub-coupling portion 1711 and the second sub-coupling portion 1712 of the first balun feed structure 170 and the third sub-coupling portion 1811 and the fourth sub-coupling portion 1812 of the second balun feed structure 180 may be directly connected to the reflection plate 190 by welding, riveting, or the like, so as to achieve grounding.

Since the size of the reflection plate 190 is smaller than the half wavelength of the current frequency, which causes the first and

second transducer elements

140 and 150 to generate back radiation, the size (length, width) of the bottom plate 191 of the reflection plate 190 in actual production is generally larger than the half wavelength, for example, larger than the half wavelength of the frequency of 2496 MHz-60 mm × 60 mm. However, the reflection plate 190 of the embodiment of the present application is provided with the side wall 192 on the edge of the bottom plate 191 to suppress backward radiation, and therefore, the size of the bottom plate 191 of the reflection plate 190 of the embodiment of the present application may be smaller than a half wavelength, for example, 50mm × 50mm at 2496MHz, which is obviously lower than the minimum size of the related art. Therefore, the dual-polarized antenna 100 structure of the embodiment of the present application can reduce the size of the reflection plate 190 on the premise of ensuring the radio frequency performance of the dual-polarized antenna 100, thereby further realizing the miniaturization of the antenna.

Wherein the side walls 192 may surround one or more edges of the bottom plate 191, such as the four edges surrounding the bottom plate 191 in fig. 13.

Here, the extending direction of the sidewall 192 may extend toward a direction away from the radiation plate 110, and in this case, the sidewall 192 may be formed by extending the edge of the bottom plate 191 toward a direction away from the radiation plate 110. Of course, the extending direction of the sidewall 192 may be the direction extending toward the radiation plate 110, and at this time, the sidewall 192 may be formed by the edge of the bottom plate 191 extending toward the radiation plate 110.

It is understood that when the side wall 192 is formed by the edge of the bottom plate 191 toward the radiation plate 110, on the one hand, the side wall 192 does not occupy an additional space in the thickness direction, and miniaturization of the dual polarized antenna 100 can be achieved; on the other hand, the closer the distance between the side wall 192 and the reflection plate 190, the coupling between the side wall 192 and the first and

second transducer elements

140 and 150 is possible, so that the bandwidth of the first and

second transducer elements

140 and 150 can be widened.

It is understood that when the sidewall 192 is formed by the edge of the bottom plate 191 toward the radiation plate 110, an included angle between the sidewall 192 and the bottom plate 191 may be greater than or equal to 90 degrees and less than 180 degrees. For example, the included angle may be 90 degrees, 110 degrees, or 120 degrees. The specific angle of the included angle is not limited in the embodiment of the present application. At this time, the side wall 192 is formed in a flared shape, and the side wall 192 and the bottom plate 191 can reflect more backward radiation, so that the backward radiation can be more suppressed.

It is understood that a hole 193 may be reserved on the bottom plate 191 of the reflection plate 190 to facilitate the assembly of the reflection plate 190 with the customer premises equipment 10.

It can be understood that the material of reflector plate 190 can be stainless steel nickel-plated material, and the thickness of reflector plate 190 can be 0.5mm, and at this moment, reflector plate 190 can compromise welding and antenna strength, guarantees dual polarized antenna 100's reliability when customer leading equipment 10 whole machine falls.

Based on the above structure, the size of the radiation plane of dual-polarized antenna 100 (i.e., the size of first surface 111 of radiation plate 110) in the embodiment of the present application can be 35mm × 35mm, which is much smaller than the size of 42mm × 42mm in the related art, so that the miniaturization of dual-polarized antenna 100 can be realized. Moreover, the height of the first surface 111 (radiation surface) of the dual-polarized antenna 100 of the embodiment of the present application from the bottom plate 191 of the reflection plate 190 may be 15.2mm, which is much smaller than 16.8mm in the related art, and the volume of the dual-polarized antenna 100 is significantly reduced, so that the dual-polarized antenna is easily integrated into a CPE device with limited space.

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

Based on the above structure, the dual-polarized antenna 100 of the embodiment of the present application has good isolation. Referring to fig. 14, fig. 14 is a S21 parameter graph of the first element unit and the second element unit of the dual-polarized antenna provided in the embodiment of the present application. As can be seen from fig. 14, the dual-polarized antenna 100 is between 2.49GHz and 4.900GHz, the isolation between the first element unit 140 and the second element unit 150 of the dual-polarized antenna 100 is greater than 24dB, and the correlation between the two elements can be reduced, and when the dual-polarized antenna 100 is used for Multiple-Input Multiple-Output (MIMO) transmission, the rate of MIMO transmission can be increased.

Based on the above structure, in order to improve the radiation efficiency of dual-polarized antenna 100, at least one of radiation plate 110, first support plate 120, and second support plate 130 may use a Polytetrafluoroethylene (PTFE) plate, and radiation plate 110, first support plate 120, and second support plate 130 made of PTFE may effectively reduce the dielectric loss of frequencies above 3.8GHz, and may improve the radiation efficiency of first oscillator unit 140 and second oscillator unit 150.

For example, please refer to fig. 15, fig. 15 is a graph illustrating a radiation efficiency of a dual-polarized antenna provided in an embodiment of the present application. As can be seen from fig. 15, when the frequency of the radio frequency signal transmitted by the dual-polarized antenna 100 is above 3.8GHz, the actual measurement efficiency of the dual-polarized antenna 100 may be greater than 70%, so that the dual-polarized antenna 100 of the embodiment of the present application can completely meet the transmission requirement of the 5G signal.

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 the miniaturization. Referring to fig. 16 and 17, fig. 16 is a first three-dimensional radiation pattern of a dual-polarized antenna according to an embodiment of the present application. Fig. 17 is a planar radiation pattern of the dual polarized antenna shown in fig. 16. As can be seen from fig. 16 and 17, when dual-polarized antenna 100 transmits a radio frequency signal at a frequency of 2.6GHZ, the gain of dual-polarized antenna 100 can reach 7.3163.

Referring to fig. 18 and 19, fig. 18 is a second perspective radiation pattern of the dual-polarized antenna provided in the embodiment of the present application, and fig. 19 is a planar radiation pattern of the dual-polarized antenna shown in fig. 18. As can be seen from fig. 18 and 19, when dual-polarized antenna 100 transmits a radio frequency signal at a frequency of 3.5GHZ, the gain of dual-polarized antenna 100 can reach 7.6277.

Further, according to the antenna theory, when the distance between the radiation surface of the antenna and the reflection plate 190 is 1/4 λ, the ideal gain is about 8.2. In the embodiment of the present invention, when the dual-polarized antenna 100 radiates a radio frequency signal in a 2.6GHZ band, the height between the first surface 111 and the bottom plate 191 of the reflection plate 190 is 15.2mm, which is only 0.115 λ, which is much smaller than 1/4 λ under an ideal gain, and the gain of the dual-polarized antenna 100 of the embodiment of the present invention can reach 7.3 to 7.6, which is not much different from the ideal gain of 8.2, so that the dual-polarized antenna 100 of the embodiment of the present invention does not reduce the gain of the antenna on the basis of meeting the requirement of miniaturization.

It is to be understood that, in the description of the present application, terms such as "first", "second", and the like are used merely to distinguish similar objects and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated.

The dual-polarized antenna and the customer premises equipment provided by the embodiment of the application are described in detail above. The principles and implementations of the present application are described herein using specific examples, which are presented only to aid in understanding the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application. Meanwhile, for those skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.

Claims

1. A dual polarized antenna, comprising:

a first support plate connected to the second surface of the radiation plate;

2. The dual polarized antenna of claim 1, wherein the first element unit comprises two radiating arms and the second element unit comprises two radiating arms, and the antenna radiating portion comprises four sub-radiating portions, each sub-radiating portion being connected to one of the radiating arms to commonly radiate radio frequency signals.

3. A dual polarized antenna according to claim 2, wherein each of said radiating arms includes a head end and a tail end, said dual polarized antenna further comprising four feed structures, each of said feed structures being connected to the head end of one of said radiating arms, and each of said sub-radiating portions being connected to the tail end of one of said radiating arms.

4. The dual polarized antenna of claim 1, wherein the first element unit and the second element unit each comprise two radiating arms, the dual polarized antenna further comprising:

the first balun feed structure is connected to the first support plate, and is electrically connected with the two radiating arms of the first oscillator unit respectively, so that currents flowing through the two radiating arms of the first oscillator unit are in the same direction; and

and the second balun feed structure is connected to the second support plate, and is electrically connected with the two radiation arms of the second oscillator unit respectively, so that currents flowing through the two radiation arms of the second oscillator unit are in the same direction.

5. The dual polarized antenna of claim 4, wherein the first balun feed structure comprises:

one end of the first coupling part is electrically connected with the two radiation arms of the first oscillator unit respectively, and the other end of the first coupling part is grounded; and

one end of the first feeding portion is used for being electrically connected with a coaxial line, and the other end of the first feeding portion is coupled and connected with the first coupling portion, so that currents flowing through the two radiating arms of the first oscillator unit are in the same direction.

6. The dual polarized antenna of claim 4, wherein the second balun feed structure comprises:

one end of the second coupling part is electrically connected with the two radiation arms of the second oscillator unit respectively, and the other end of the second coupling part is grounded; and

and one end of the second feeding part is used for being electrically connected with a coaxial line, and the other end of the second feeding part is coupled and connected with the second coupling part, so that currents flowing through the two radiating arms of the second oscillator unit are in the same direction.

7. The dual polarized antenna of any one of claims 1 to 6, wherein at least one of the radiating plate, the first support plate, and the second support plate comprises a polytetrafluoroethylene sheet.

8. The dual polarized antenna of any one of claims 1 to 6, further comprising:

the first supporting plate and the second supporting plate are positioned between the radiation plate and the reflecting plate, and the reflecting plate is connected with the first supporting plate and the second supporting plate respectively;

wherein the reflection plate includes a bottom plate and a sidewall disposed around an edge of the bottom plate.

9. The dual polarized antenna of claim 8, wherein the sidewalls are located between the bottom plate and the radiating plate.

10. The dual polarized antenna of claim 9, wherein the angle between the sidewalls and the bottom plate is greater than or equal to ninety degrees.

11. A client premises apparatus, comprising:

a dual polarized antenna comprising the dual polarized antenna of any one of claims 1 to 10; and