Antenna and communication equipment

Abstract

The invention provides an antenna and communication equipment, relates to the technical field of communication, and aims to solve the problems that an antenna array feed network is complex in structure and large in transmission loss. The antenna comprises a reflecting plate, a floor, a first polarization transmission line and a second polarization transmission line, the floor is provided with a plurality of first polarization gaps and a plurality of second polarization gaps, the first polarization transmission line is coupled with the floor, and signals can be transmitted between the first polarization transmission line and the floor and can be radiated outwards through the first polarization gaps; the second polarization transmission line is coupled with the floor, and signals can be transmitted between the second polarization transmission line and the floor and can be radiated outwards through the second polarization gap. According to the antenna provided by the invention, the use number of the first polarization transmission line and the second polarization transmission line can be reduced, the utilization efficiency of the space between the reflecting plate and the floor can be improved, and the transmission loss can be reduced.

Description

Technical Field

[0001] This application relates to the field of communication technologies, and in particular, to an antenna and a communication device. Background Art

[0002] With the rapid development of wireless communication technologies, the demand for the capacity of antenna systems in the industry is also increasing. To improve the data transmission rate and channel capacity of antenna systems, a relatively large number of radiators are started to be arranged in antennas. In actual applications, each radiator needs to be fed and connected to a feeding network, making the structure of the feeding network more and more complex and reducing the performance of the antenna. For example, when the transmission path of the feeding network is long, the transmission loss will be significantly increased. In addition, when the wiring density of the feeding network is high, the inter-wire coupling is relatively serious, thus reducing the performance of the antenna. Therefore, how to improve the performance of the antenna has become a technical problem to be solved urgently. Summary of the Invention

[0003] This application provides an antenna and a communication device with good working performance.

[0004] In a first aspect, the present application provides an antenna, which includes a reflector, a ground plane, a first polarization transmission line, and a second polarization transmission line. The reflector has a reflecting surface. The ground plane, the first polarization transmission line, and the second polarization transmission line are all disposed on one side of the reflecting surface of the reflector. The ground plane has a plurality of first polarization slots and a plurality of second polarization slots. The plurality of first polarization slots are sequentially arranged at intervals along a first direction, and the plurality of second polarization slots are sequentially arranged at intervals along the first direction. The first polarization transmission line is coupled to the ground plane, and there is an air layer between the first polarization transmission line and the ground plane, and signals can be transmitted between the first polarization transmission line and the ground plane. Along the first direction, the first polarization transmission line has a plurality of first coupling segments, and the plurality of first coupling segments are arranged in one-to-one correspondence with the plurality of first polarization slots, so that signals can propagate outward through the first polarization slots. The second polarization transmission line is coupled to the ground plane, and there is an air layer between the second polarization transmission line and the ground plane, and signals can be transmitted between the first polarization transmission line and the ground plane. Along the first direction, the second polarization transmission line has a plurality of second coupling segments, and the plurality of second coupling segments are arranged in one-to-one correspondence with the plurality of second polarization slots, so that signals can propagate outward through the second polarization slots. In the antenna provided by the present application, the first polarization slots and the second polarization slots are slots with two different polarization directions. The first polarization transmission line is coupled to the first polarization slots, and the second polarization transmission line is coupled to the second polarization slots, so that the polarization directions of the electromagnetic waves propagating outward from the first polarization slots and the second polarization slots are different, thereby enabling dual-polarization radiation and reception of signals, and having good signal transmission and reception capabilities and anti-interference capabilities. Or it can be understood that, compared with a single-polarization antenna that only has the first polarization slots and the first polarization transmission line, when the antenna provided by the present application is applied in a complex external environment, it can effectively reduce the interference of buildings or metal objects in the external environment and has good signal transmission and reception efficiency. In addition, the combination of the ground plane and the first polarization transmission line can not only achieve the function of signal transmission, but also has the function of radiating signals outward. Correspondingly, the combination of the ground plane and the second polarization transmission line can not only achieve the function of signal transmission, but also has the function of radiating signals outward. In addition, it can also simplify the number of the first polarization transmission line and the second polarization transmission line used, which is beneficial to improving the utilization efficiency of the space between the reflector and the ground plane. So that more other transmission lines can be arranged between the ground plane and the reflector.

[0005] For example, in one example, the antenna may further include at least one third transmission line. The third transmission line is coupled to the ground plane and is not coupled to either the first polarization slots or the second polarization slots, so that the combination of the ground plane and the third transmission line can achieve the function of signal transmission.

[0006] In one example, along the extending direction of the first polarization transmission line, the cross-sectional shapes or areas of different regions or segments of the first polarization transmission line can be the same or different. Along the extending direction of the second polarization transmission line, the cross-sectional shapes or areas of different regions or segments of the second polarization transmission line can be the same or different. In practical applications, the shape of the first polarization transmission line can be flexibly set to meet the requirements of parameters such as impedance matching and energy intensity of the first polarization transmission line. Correspondingly, the shape of the second polarization transmission line can be flexibly set to meet the requirements of parameters such as impedance matching and energy intensity of the second polarization transmission line.

[0007] In one example, a first conductive protrusion is provided around the edge of the first polarization slot, and the first conductive protrusion extends in a direction away from the reflector. A second conductive protrusion is provided around the edge of the second polarization slot, and the second conductive protrusion extends in a direction away from the reflector. By providing the first conductive protrusion and the second conductive protrusion, the filtering performance of the antenna can be improved. When specifically setting, the first conductive protrusion can be a flange provided around the edge of the first polarization slot, or the first conductive protrusion is a plurality of convex columns provided at intervals around the edge of the first polarization slot. The second conductive protrusion can be a flange provided along the edge of the second polarization slot, or the second conductive protrusion is a plurality of convex columns provided at intervals along the edge of the second polarization slot.

[0008] In one example, the height dimension of the first conductive protrusion is greater than or equal to 1 / 20λ, where λ is the wavelength of the electromagnetic wave at the highest operating frequency of the antenna when propagating in air, so that the first conductive protrusion has better filtering ability. The height dimension of the second conductive protrusion is greater than or equal to 1 / 20λ, where λ is the wavelength of the electromagnetic wave at the highest operating frequency of the antenna when propagating in air, so that the second conductive protrusion has better filtering ability.

[0009] In one example, in the length direction of the first polarization slot, the width dimensions at both ends of the first polarization slot are greater than the width dimension at the middle of the first polarization slot, thereby improving the filtering performance of the antenna. In the length direction of the second polarization slot, the width dimensions at both ends of the second polarization slot are greater than the width dimension at the middle of the second polarization slot, thereby improving the filtering performance of the antenna.

[0010] In one example, the first polarization slot and the second polarization slot can be arranged in a cross manner, which can reduce the spatial occupation of the first polarization slot and the second polarization slot, and is beneficial to arranging a larger number of the first polarization slots and the second polarization slots.

[0011] In one example, the first polarized transmission line is located between the floor and the reflector, and the second polarized transmission line is located between the floor and the reflector. The floor and the reflector can effectively electromagnetic shield the first polarized transmission line and the second polarized transmission line, avoiding or reducing the signal energy loss of the first polarized transmission line and the second polarized transmission line into the air, and reducing the transmission loss of the signal.

[0012] In one example, the antenna further includes a first side plate and a second side plate. The first side plate and the second side plate are arranged oppositely, and the floor, the reflector, the first side plate and the second side plate jointly form a space for accommodating the first polarized transmission line and the second polarized transmission line. One end of the first side plate is connected to the floor, and the other end is connected to the reflector. One end of the second side plate is connected to the floor, and the other end is connected to the reflector. The cavity formed by the floor, the reflector, the first side plate and the second side plate can effectively electromagnetic shield the first polarized transmission line and the second polarized transmission line, preventing the signal energy of the first polarized transmission line and the second polarized transmission line from being lost into the air and reducing the transmission loss of the signal.

[0013] When specifically arranged, the first side plate can be a conductive plate, the second side plate can be a conductive plate, and the first side plate is electrically connected to the floor, and the second side plate is electrically connected to the floor.

[0014] Alternatively, the first side plate is electrically connected to the reflector, or the second side plate is electrically connected to the reflector. Alternatively, both the first side plate and the second side plate are electrically connected to the reflector, thereby improving the electromagnetic shielding effect.

[0015] In one example, the antenna further includes a conductive column, the conductive column is located between the floor and the reflector, and the conductive column is electrically connected to the floor and / or the reflector. The conductive column can change the resonant frequency of the cavity, which is beneficial to ensuring the performance of the antenna.

[0016] In one example, the antenna further includes a first insulating bracket and a second insulating bracket. One end of the first insulating bracket is fixedly connected to the side of the first polarized transmission line facing away from the floor, and the other end is fixedly connected to the floor or the reflector. One end of the second insulating bracket is fixedly connected to the side of the second polarized transmission line facing away from the floor, and the other end is fixedly connected to the floor or the reflector. The first insulating bracket can be used to realize the fixed connection between the first polarized transmission line and the floor or the reflector, and the second insulating bracket can be used to realize the fixed connection between the second polarized transmission line and the floor or the reflector.

[0017] When specifically arranged, the first insulating bracket and the second insulating bracket are of an integral structure, or can be two independent structural members.

[0018] In one example, the floor can be a metal plate, or the floor includes a dielectric substrate and a metal layer on at least one surface of the dielectric substrate.

[0019] In one example, the first insulating bracket, the second insulating bracket and the dielectric substrate are of an integral structure, thereby improving the convenience during preparation.

[0020] In one example, the antenna further includes a plurality of director elements. The plurality of director elements are located on a side of the floor away from the reflector, and the plurality of director elements are arranged in one-to-one correspondence with the plurality of first polarization slots and the plurality of second polarization slots. Among the correspondingly arranged director elements, first polarization slots and second polarization slots, the director element is coupled to both the first polarization slot and the second polarization slot.

[0021] In one example, the antenna further includes a plurality of insulating fixing brackets, and the plurality of insulating fixing brackets are arranged in one-to-one correspondence with the plurality of director elements. Among the correspondingly arranged fixing brackets and director elements, one end of the fixing bracket is fixedly connected to the director element, and the other end is fixedly connected to the floor or the reflector.

[0022] In a second aspect, the present application further provides a communication device, including a radio frequency processing unit and the above-mentioned antenna. The radio frequency processing unit is located on a side of the reflector away from the reflecting surface, and the radio frequency processing unit is connected to the first polarization transmission line and the second polarization transmission line. The radio frequency processing unit can send radio frequency signals to the first polarization transmission line and the second polarization transmission line. The signals can be efficiently transmitted between the first polarization transmission line and the floor and between the second polarization transmission line and the floor. In addition, the signals can also be radiated out through the slots in the floor. In the communication device provided by the present application, by adopting the above-mentioned antenna, the number of transmission lines used can be effectively reduced, which is beneficial to improving the working performance of the communication device. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 Schematic diagram of an application scenario of an antenna provided by an embodiment of the present application;

[0024] Figure 2 Partial architecture diagram of an antenna in a base station provided by an embodiment of the present application;

[0025] Figure 3 Exploded structure schematic diagram of an antenna provided by an embodiment of the present application;

[0026] Figure 4 Planar structure schematic diagram of an antenna provided by an embodiment of the present application;

[0027] Figure 5 Cross-sectional structure schematic diagram of an antenna provided by an embodiment of the present application;

[0028] Figure 6 Another cross-sectional structure schematic diagram of an antenna provided by an embodiment of the present application;

[0029] Figure 7Schematic diagram of the planar structure of a floor provided by an embodiment of the present application;

[0030] Figure 8 Schematic diagram of the planar structure of another floor provided by an embodiment of the present application;

[0031] Figure 9 Schematic diagram of the planar structure of another floor provided by an embodiment of the present application;

[0032] Figure 10 Schematic diagram of the planar structure of another floor provided by an embodiment of the present application;

[0033] Figure 11 Schematic diagram of the three-dimensional structure of an antenna provided by an embodiment of the present application;

[0034] Figure 12 Schematic diagram of the cross-sectional structure of an antenna provided by an embodiment of the present application;

[0035] Figure 13 Schematic diagram of the cross-sectional structure of another antenna provided by an embodiment of the present application;

[0036] Figure 14 Schematic diagram of the cross-sectional structure of another antenna provided by an embodiment of the present application;

[0037] Figure 15 Schematic diagram of the cross-sectional structure of another antenna provided by an embodiment of the present application;

[0038] Figure 16 Schematic diagram of the cross-sectional structure of another antenna provided by an embodiment of the present application;

[0039] Figure 17 Schematic diagram of the cross-sectional structure of another antenna provided by an embodiment of the present application;

[0040] Figure 18 Schematic diagram of the three-dimensional structure of another antenna provided by an embodiment of the present application;

[0041] Figure 19 Schematic diagram of the cross-sectional structure of another antenna provided by an embodiment of the present application;

[0042] Figure 20 Block diagram of the structure of a communication device provided by an embodiment of the present application. Detailed implementation manners

[0043] In order to make the objectives, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings.

[0044] The antenna provided by the embodiment of the present application can be applied to communication devices such as base stations and radars to implement wireless communication functions.

[0045] As Figure 1 shown, the application scenario may include a base station and a terminal. Wireless communication can be achieved between the base station and the terminal. The base station may be located in a base bastion subsystem (BBS), a UMTS terrestrial radio access network (UTRAN), or an evolved universal terrestrial radio access (E-UTRAN) for cell coverage of wireless signals to enable communication between terminal devices and the wireless network. Specifically, the base station may be a base transceiver station (BTS) in a global system for mobile communication (GSM) or a code division multiple access (CDMA) system, may also be a Node B (NB) in a wideband code division multiple access (WCDMA) system, may also be an evolved Node B (eNB or eNodeB) in a long term evolution (LTE) system, or may also be a radio controller in a cloud radio access network (CRAN) scenario. Or the base station may also be a relay station, an access point, a vehicle-mounted device, a wearable device, and a g Node (gNodeB or gNB) in a new radio (NR) system, or a base station in a future evolved network, etc., which is not limited in the embodiments of the present application.

[0046] As Figure 2 shown, a partial architecture diagram of an antenna in a base station is provided. The antenna may include multiple input ports ( Figure 2 two are shown in), and each input port is coupled to the antenna through a feeding network. The radio frequency signal input from the input port can be transmitted to multiple antenna elements through the feeding network, thereby exciting the antenna elements to generate wireless signals and realizing the wireless communication function. Among them, the antenna element may specifically be a director or an oscillator, etc., which can be excited to generate wireless signals. The specific type of the antenna element is not limited in the present application.

[0047] In actual application, as the number of antenna elements continues to increase, a single feeding network needs to be coupled to more antenna elements, making the structure of the feeding network more complex and not conducive to ensuring the transmission efficiency of signals in the feeding network.

[0048] To this end, the embodiments of the present application provide an antenna with a simple-structured feed network and good working performance.

[0049] In order to make the objectives, technical solutions, and advantages of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0050] As Figure 3 、 Figure 4 and Figure 5 shown, in an example provided by the present application, the antenna 10 includes a reflector 11, a ground plane 12, and a feed network. The feed network includes a first polarization transmission line 13 and a second polarization transmission line 14. The reflector 11 has a reflecting surface 110. The ground plane 12, the first polarization transmission line 13, and the second polarization transmission line 14 are all disposed on one side of the reflecting surface 110 of the reflector 11. Among them, the ground plane 12 is coupled to both the first polarization transmission line 13 and the second polarization transmission line 14, so that signals can be transmitted between the ground plane 12 and the first polarization transmission line 13, and between the ground plane 12 and the second polarization transmission line 14. In addition, the ground plane 12 has slits, so that the ground plane 12 also has a signal radiation function. Specifically, the ground plane 12 has a plurality of first polarization slits 121 and a plurality of second polarization slits 122( Figure 3There are three shown. A plurality of first polarization slots 121 are sequentially arranged at intervals along a first direction, and a plurality of second polarization slots 122 are sequentially arranged at intervals along the first direction. The first polarization transmission line 13 is coupled to the floor 12, and there is an air layer between the first polarization transmission line 13 and the floor 12, and signals can be transmitted between the first polarization transmission line 13 and the floor 12. Along the first direction, the first polarization transmission line 13 has a plurality of first coupling segments 131, and the plurality of first coupling segments 131 are arranged in one-to-one correspondence with the plurality of first polarization slots 121, so that signals can propagate outward through the first polarization slots 121. The second polarization transmission line 14 is coupled to the floor 12, and there is an air layer between the second polarization transmission line 14 and the floor 12, and signals can be transmitted between the first polarization transmission line 13 and the floor 12. Along the first direction, the second polarization transmission line 14 has a plurality of second coupling segments 141, and the plurality of second coupling segments 141 are arranged in one-to-one correspondence with the plurality of second polarization slots 122, so that signals can propagate outward through the second polarization slots 122. Generally speaking, the combination of the floor 12 and the first polarization transmission line 13 can not only realize the function of signal transmission, but also has the function of radiating signals outward. Correspondingly, the combination of the floor 12 and the second polarization transmission line 14 can not only realize the function of signal transmission, but also has the function of radiating signals outward. In addition, it can also simplify the number of uses of the first polarization transmission line 13 and the second polarization transmission line 14, which is beneficial to improving the utilization efficiency of the space between the reflector 11 and the floor 12. So that more other transmission lines can be arranged between the floor 12 and the reflector 11. Among them, the other transmission lines can be transmission lines the same as or similar to the first polarization transmission line 13 and the second polarization transmission line 14, or transmission lines with other functions.

[0051] For example, as Figure 6 shown, in the example provided in the present application, a third transmission line 15 is also provided. The third transmission line 15 is coupled to the floor 12, and moreover, the third transmission line 15 is not coupled to either the first polarization slot 121 or the second polarization slot 122. That is, signals can be effectively transmitted between the third transmission line 15 and the floor 12. When specifically arranged, the number of the third transmission line 15 can be one, two or more. The present application does not limit the specific number, type and function of the other transmission lines.

[0052] It should be noted that the corresponding setting of the first coupling section 131 and the first polarization slot 121 mentioned above means that the vertical projection of the first coupling section 131 on the floor 12 overlaps with the first polarization slot 121, so that the electromagnetic wave transmitted between the first polarization transmission line 13 and the floor 12 can radiate outward through the first polarization slot 121. Correspondingly, the corresponding setting of the second coupling section 141 and the second polarization slot 122 means that the vertical projection of the second coupling section 141 on the floor 12 overlaps with the second polarization slot 122, so that the electromagnetic wave transmitted between the second polarization transmission line 14 and the floor 12 can radiate outward through the second polarization slot 122.

[0053] In the example provided by the present application, the dual-polarization radiation of the antenna 10 can be realized by setting the first polarization slot 121 and the second polarization slot 122, and it has good radiation performance. Multiple first polarization slots 121 are connected in series through the first polarization transmission line 13, which can effectively simplify the structure and length of the first polarization transmission line 13, thereby reducing the loss of the signal when propagating in the first polarization transmission line 13. In addition, there is an air layer between the first polarization transmission line 13 and the floor 12, and there is no other medium between the first polarization transmission line 13 and the floor 12, reducing the transmission loss of the signal between the first polarization transmission line 13 and the floor 12. Correspondingly, multiple second polarization slots 122 are connected in series through the second polarization transmission line 14, which can effectively simplify the structure and length of the second polarization transmission line 14, thereby reducing the loss of the signal when propagating in the second polarization transmission line 14. In addition, there is an air layer between the second polarization transmission line 14 and the floor 12, and there is no other medium between the second polarization transmission line 14 and the floor 12, reducing the transmission loss of the signal between the second polarization transmission line 14 and the floor 12, and effectively improving the working performance of the antenna 10.

[0054] It should be noted that the fact that there is an air layer between the first polarization transmission line 13 and the floor 12 mentioned above means that there is no other medium or there is a small amount of other medium between the first polarization transmission line 13 and the floor 12, so that when the signal is transmitted between the first polarization transmission line 13 and the floor 12, the loss of the signal during transmission will not be significantly reduced due to the presence of an obvious medium. Correspondingly, the fact that there is an air layer between the second polarization transmission line 14 and the floor 12 mentioned above means that there is no other medium or there is a small amount of other medium between the second polarization transmission line 14 and the floor 12, so that when the signal is transmitted between the second polarization transmission line 14 and the floor 12, the loss of the signal during transmission will not be significantly reduced due to the presence of an obvious medium. The situation where there is a small amount of other medium between the first polarization transmission line 13, the second polarization transmission line 14 and the floor 12 will be described in detail below and will not be elaborated here.

[0055] In actual application, the reflector 11 can effectively block signals coming from the side of the reflector 11 facing away from the floor 11, so as to prevent other external signals from interfering with the signal transmission of the first polarization transmission line 13 and the second polarization transmission line 14, and can effectively ensure the radiation performance and stability of the antenna 10.

[0056] It can be understood that the number of the first polarization transmission line 13 and the second polarization transmission line 14 in the antenna 10 can be one, two or more. For the convenience of understanding the technical solution of the present application, in the following examples, the case where the antenna 10 includes one first polarization transmission line 13 and one second polarization transmission line 14 will be taken as an example for illustrative description.

[0057] In specific settings, the relative positions of the floor 12, the first polarization transmission line 13 and the second polarization transmission line 14 can be diverse.

[0058] For example, as Figure 5 shown, in an example provided by the present application, both the first polarization transmission line 13 and the second polarization transmission line 14 are located between the floor 12 and the reflector 11, so that a relatively stable signal transmission effect is achieved between the first polarization transmission line 13, the second polarization transmission line 14 and the floor 12.

[0059] Of course, in other examples, the first polarization transmission line 13 or the second polarization transmission line 14 can also be located on the side of the floor 12 facing away from the reflector 11, which will not be elaborated here.

[0060] For the convenience of understanding the technical solution of the present application, in the following examples, the case where both the first polarization transmission line 13 and the second polarization transmission line 14 are located between the floor 12 and the reflector 11 will be taken as an example for illustrative description.

[0061] In addition, in the examples provided by the present application, a plurality of first polarization slots 121 are arranged at intervals in sequence along the first direction, and a plurality of second polarization slots 122 are arranged at intervals in sequence along the first direction. The first polarization transmission line 13 and the second polarization transmission line 14 extend along the first direction respectively. That is, the plurality of first polarization slots 121 and the second polarization slots 122 are arranged side by side along the first direction, and moreover, the first polarization transmission line 13 and the second line are arranged side by side along the first direction. This can avoid crossovers between the first polarization transmission line 13 and the second polarization transmission line 14, thereby ensuring the signal transmission effect.

[0062] It can be understood that in other examples, along the first direction, there may also be a small positional deviation between the multiple first polarization slits 121, that is, the multiple first polarization slits 121 are arranged at intervals approximately along the first direction, rather than strictly arranged at intervals along the first direction. In addition, the distances between two adjacent first polarization slits 121 may be the same or different. In actual applications, the distances and relative positions between two adjacent first polarization slits 121 can be reasonably set according to actual requirements. Correspondingly, along the first direction, there may also be a small positional deviation between the multiple second polarization slits 122, that is, the multiple second polarization slits 122 are arranged at intervals approximately along the first direction, rather than strictly arranged at intervals along the second direction. In addition, the distances between two adjacent second polarization slits 122 may be the same or different. In actual applications, the distances and relative positions between two adjacent second polarization slits 122 can be reasonably set according to actual requirements.

[0063] In addition, during specific setting, it is ensured that there is no intersection between the first polarization transmission line 13 and the second polarization transmission line 14, and that the first polarization transmission line 13 can effectively couple to the multiple first polarization slits 121 and the second polarization transmission line 14 can effectively couple to the multiple second polarization slits 122. In actual applications, the positions of the first polarization transmission line 13, the second polarization transmission line 14, the first polarization slits 121, and the second polarization slits 122 can be reasonably set according to the actual situation, which will not be elaborated here.

[0064] During specific setting, the structural types of the first polarization transmission line 13 and the second polarization transmission line 14 can be diverse.

[0065] For example, as Figure 3 and Figure 4 shown, in an example provided in the present application, both the first polarization transmission line 13 and the second polarization transmission line 14 are strip-shaped sheet metal parts. During specific manufacturing, a metal plate can be used as the blank, and processes such as stamping and wire cutting can be used to form the first polarization transmission line 13 and the second polarization transmission line 14. Other processes can be used to manufacture the first polarization transmission line 13 and the second polarization transmission line 14, and the present application does not limit the specific manufacturing processes of the first polarization transmission line 13 and the second polarization transmission line 14.

[0066] In addition, in terms of the cross-sectional shape, the cross-sectional shape of the first polarization transmission line 13 can be a polygon such as a circle, an ellipse, a rectangle, etc., or other irregular shapes. Correspondingly, the cross-sectional shape of the second polarization transmission line 14 can be a polygon such as a circle, an ellipse, a rectangle, etc., or other irregular shapes. Among them, the cross-sectional shape of the first polarization transmission line 13 and the shape of the second polarization transmission line 14 can be the same or different, which will not be elaborated here.

[0067] In addition, along the extension direction of the first polarization transmission line 13, the cross-sectional shapes or areas of different regions or segments of the first polarization transmission line 13 can be the same or different. Correspondingly, along the extension direction of the second polarization transmission line 14, the cross-sectional shapes or areas of different regions or segments of the second polarization transmission line 14 can be the same or different to make the entire transmission match.

[0068] When specifically setting, parameters such as the impedance, phase, and amplitude of the antenna 10 can be comprehensively considered to reasonably set the line widths of the first polarization transmission line 13 and the second polarization transmission line 14, which will not be elaborated here.

[0069] In addition, in practical applications, the shapes of the first polarization slot 121 and the second polarization slot 122 can be diverse. Moreover, the shapes of the first polarization slot 121 and the second polarization slot 122 can be the same or different. For the sake of clear understanding, the first polarization slot 121 will be specifically described below. When setting the second polarization slot 122, the second polarization slot 122 can refer to the first polarization slot 121 for the same or similar design, which will not be elaborated in detail below.

[0070] For example, as Figure 7 shown, in an example provided in the present application, the first polarization slot 121 is a rectangular slot.

[0071] Or, as Figure 8 shown, in another example provided in the present application, the first polarization slot 121 is hourglass-shaped. That is, the width dimensions at both ends of the first polarization slot 121 are larger, and from both ends of the first polarization slot 121 to the middle region, the width of the first polarization slot 121 gradually decreases.

[0072] When specifically setting, from both ends of the first polarization slot 121 to the middle, the width dimension of the first polarization slot 121 can gradually decrease in a linear shape or in a curved shape. Generally speaking, in the length direction of the first polarization slot 121, it is sufficient that the width dimensions at both ends of the first polarization slot 121 are larger than the width dimension at the middle of the first polarization slot 121.

[0073] In addition, as Figure 9As shown, in another example provided by the present application, the first polarization slot 121 can also be in the shape of an H.

[0074] When specifically setting, the specific shapes of the first polarization slot 121 and the second polarization slot 122 can be reasonably set, which will not be elaborated here.

[0075] In addition, when setting the first polarization slot 121 and the second polarization slot 122, the relative positions between the first polarization slot 121 and the second polarization slot 122 can also be diverse.

[0076] For example, as Figures 7 to 9 shown, in an example provided by the present application, multiple first polarization slots 121 and second polarization slots 122 are arranged in parallel along the first direction. Along the second direction, there is a relatively large gap between two adjacent first polarization slots 121 and second polarization slots 122, and the length directions of the first polarization slot 121 and the second polarization slot 122 are perpendicular to each other, so that the antenna 10 has better dual-polarization performance. Or it can be understood that the first polarization slot 121 and the second polarization slot 122 are slots with two different polarization directions. The first coupling section 131 in the first polarization transmission line 13 is coupled to the first polarization slot 121, and the second coupling section 141 in the second polarization transmission line 14 is coupled to the second polarization slot 122, so that the polarization directions of the electromagnetic waves propagating outward from the first polarization slot 121 and the second polarization slot 122 are different, thus enabling dual-polarization radiation and reception of signals, and having better signal transmission and reception capabilities and anti-interference capabilities. Or it can be understood that compared with a single-polarization antenna that only sets the first polarization slot 121 and the first polarization transmission line 13, when the antenna provided by the present application is applied in a complex external environment, it can effectively reduce the interference of buildings or metal bodies in the external environment and has better signal transmission and reception efficiency. In actual application, the electromagnetic wave propagating outward from the first polarization slot 121 can specifically be a horizontally polarized electromagnetic wave, and the electromagnetic wave propagating outward from the second polarization slot 122 can specifically be a vertically polarized electromagnetic wave. Or, the electromagnetic wave propagating outward from the first polarization slot 121 can be a vertically polarized electromagnetic wave, and the electromagnetic wave propagating outward from the second polarization slot 122 can specifically be a horizontally polarized electromagnetic wave.

[0077] Or, as Figure 10 shown, in an example provided by the present application, the first polarization slot 121 and the second polarization slot 122 are arranged in a cross shape. Through the cross-shaped structure setting, the occupation of space by the first polarization slot 121 and the second polarization slot 122 in the second direction can be reduced. Or, it can be understood that along the second direction, in a limited space, the first polarization slot 121 and the second polarization slot 122 with longer dimensions can be set in the floor 12, so it has better flexibility.

[0078] Certainly, when the first polarization slot 121 and the second polarization slot 122 are in the above-mentioned hourglass shape or H shape, the first polarization slot 121 and the second polarization slot 122 can also be arranged in a cross manner, which will not be elaborated here.

[0079] As Figure 11 shown, in another example provided by the present application, a first conductive protrusion 123 is disposed around the edge of the first polarization slot 121, and the first conductive protrusion 123 extends in a direction away from the reflector 11. A second conductive protrusion 124 is disposed around the edge of the second polarization slot 122, and the second conductive protrusion 124 extends in a direction away from the reflector 11.

[0080] As Figure 11 shown, in specific settings, the first conductive protrusion 123 can specifically be a flange disposed around the edge of the first polarization slot 121. The second conductive protrusion 124 is a flange disposed along the edge of the second polarization slot 122.

[0081] Alternatively, in other examples, the first conductive protrusion 123 can also be a plurality of convex posts disposed at intervals along the edge of the first polarization slot 121. The second conductive protrusion 124 can also be a plurality of convex posts disposed at intervals along the edge of the second polarization slot 122.

[0082] In specific implementation, the first conductive protrusion 123 and the second conductive protrusion 124 can be made of materials with good conductivity such as copper or aluminum. Alternatively, the first conductive protrusion 123 and the second conductive protrusion 124 can also be insulators with a conductive layer on the surface. In addition, the first conductive protrusion 123 and the second conductive protrusion 124 can be independent structural members or can be integrally formed with the floor 12. The specific shapes and setting methods of the first conductive protrusion 123 and the second conductive protrusion 124 can be reasonably set according to actual requirements.

[0083] In addition, in specific settings, the height dimension of the first conductive protrusion 123 can be greater than or equal to 1 / 20λ. The height dimension of the second conductive protrusion 124 can be greater than or equal to 1 / 20λ. Wherein, λ is the wavelength of the electromagnetic wave at the highest operating frequency of the antenna 10 when propagating in the air.

[0084] In the example provided by the present application, the floor 12 and the reflector 11 are arranged at intervals, and the first polarization transmission line 13 and the second polarization transmission line 14 are both suspended between the floor 12 and the reflector 11. So that both the first polarization transmission line 13 and the second polarization transmission line 14 can achieve good coupling with the floor 12. In specific settings, the floor 12, the reflector 11, the first polarization transmission line 13 and the second polarization transmission line 14 can be fixedly connected through appropriate connectors.

[0085] For example, as Figure 11and Figure 12 As shown, in an example provided by the present application, the antenna 10 further includes a first side plate 16 and a second side plate 17. The first side plate 16 and the second side plate 17 are arranged opposite to each other, and one end of the first side plate 16 is connected to the floor 12, and the other end is connected to the reflector 11. One end of the second side plate 17 is connected to the floor 12, and the other end is connected to the reflector 11.

[0086] That is, a fixed connection can be achieved between the floor 12 and the reflector 11 through the first side plate 16 and the second side plate 17.

[0087] In the example provided by the present application, the floor 12, the first side plate 16 and the second side plate 17 are of an integral structure. The integral structure setting can effectively improve the convenience in manufacturing the floor 12, the first side plate 16 and the second side plate 17. At the same time, the connection between the floor 12, the first side plate 16 and the second side plate 17 can also be realized.

[0088] Among them, the floor 12, the first side plate 16 and the second side plate 17 can be plate bodies made of conductive materials such as copper or aluminum.

[0089] Or, as Figure 13 shown, the floor 12, the first side plate 16 and the second side plate 17 can also be of a composite structure. Specifically, the floor 12 includes a dielectric substrate 1201 and a conductive layer 1202 located on the outer side surface of the dielectric substrate 1201. The first side plate 16 includes a dielectric substrate 1601 and a conductive layer 1602 located on the outer side surface of the dielectric substrate 1601. The second side plate 17 includes a dielectric substrate 1701 and a conductive layer 1702 located on the outer side surface of the dielectric substrate 1701.

[0090] In other examples, the conductive layer can also be located on the inner side surface of the dielectric substrate. Or, the conductive layer can also be provided on both the inner side surface and the outer side surface of the dielectric substrate. When specifically setting, the specific structural forms of the floor 12, the first side plate 16 and the second side plate 17 can be reasonably selected according to actual needs, which will not be elaborated here.

[0091] In addition, in some examples, the first polarization transmission line 13 and the second polarization transmission line 14 can also be coupled with the first side plate 16 or the second side plate 17 to achieve the signal transmission function.

[0092] Specifically, as Figure 14As shown, in an example provided by the present application, the first polarization transmission line 13 is coupled to the first side plate 16, enabling effective signal transmission between the first polarization transmission line 13 and the first side plate 16. The second polarization transmission line 14 is coupled to the second side plate 17, enabling effective signal transmission between the second polarization transmission line 14 and the second side plate 17. Through this structural arrangement, the positions and shapes of the first polarization transmission line 13 and the second polarization transmission line 14 can be set more flexibly, effectively improving the flexibility and diversity of wiring.

[0093] It should be noted that the first side plate 16, the second side plate 17, and the floor 12 are all electrically connected. Therefore, the coupling of the first polarization transmission line 13 to the first side plate 16 is equivalent to the coupling of the first polarization transmission line 13 to the floor 12, and the coupling of the second polarization transmission line 14 to the second side plate 17 is equivalent to the coupling of the second polarization transmission line 14 to the floor 12. When the first polarization transmission line 13 is coupled to the first side plate 16, the vertical projection of the first coupling section 131 in the first polarization transmission line 13 on the floor 12 still overlaps with the first polarization slot 121, enabling the signal to radiate outward through the first polarization slot 121. Correspondingly, when the second polarization transmission line 14 is coupled to the second side plate 17, the vertical projection of the second coupling section 141 in the second polarization transmission line 14 on the floor 12 still overlaps with the second polarization slot 122, enabling the signal to radiate outward through the second polarization slot 122.

[0094] Of course, in other examples, the first polarization transmission line 13 can also be coupled to the second side plate 17, and the second polarization transmission line 14 can also be coupled to the first side plate 16. Or, the first polarization transmission line 13 and the second polarization transmission line 14 can both be coupled to the first side plate 16. Or, the first polarization transmission line 13 and the second polarization transmission line 14 can both be coupled to the second side plate 17, which will not be elaborated in detail here.

[0095] In addition, when the antenna 10 includes the above-mentioned third transmission line 15, the third transmission line 15 can also be coupled to the first side plate 16 or the second side plate 17. Among them, the specific coupling situation of the third transmission line 15 with the floor 12, the first side plate 16, or the second side plate 17 can be set similarly according to the coupling situation of the first polarization transmission line 13 with the floor 12, the first side plate 16, or the second side plate 17, which will not be elaborated here.

[0096] In the above example, both the first side plate 16 and the second side plate 17 are fixedly connected to the reflector 11, so as to have good connection strength and structural stability among the floor 12, the first side plate 16, and the second side plate 17.

[0097] However, in other examples, either the first side plate 16 or the second side plate 17 can be fixedly connected to the reflector 11. For example, the first side plate 16 can be fixedly connected to the reflector 11, and the second side plate 17 is not connected to the reflector 11.

[0098] In addition, during specific setting, the first side plate 16 and the reflector 11 can be insulated from each other, and the second side plate 17 and the reflector 11 can also be insulated from each other. Or, the first side plate 16 and the reflector 11 can also be conductively connected, and the second side plate 17 and the reflector 11 can also be conductively connected. During specific application, the electrical connection between the first side plate 16 and the reflector 11 can be flexibly set according to actual requirements. Correspondingly, the electrical connection between the second side plate 17 and the reflector 11 can also be flexibly set according to actual requirements, which will not be elaborated here.

[0099] In addition, in other examples, the first side plate 16 and the second side plate 17 can be independent structural members. The first side plate 16 and the floor 12 and the reflector 11 can be fixedly connected by means such as welding and bonding. Or, the first side plate 16 and the floor 12 and the reflector 11 can also be fixedly connected by connecting members such as screws and buckles. Correspondingly, the second side plate 17 and the floor 12 and the reflector 11 can be fixedly connected by means such as welding and bonding. Or, the second side plate 17 and the floor 12 and the reflector 11 can also be fixedly connected by connecting members such as screws and buckles.

[0100] Among them, the first side plate 16 and the second side plate 17 can be plate bodies made of insulating materials, so that the first side plate 16 and the second side plate 17 have good insulation performance.

[0101] Or, the first side plate 16 and the second side plate 17 can also be plate bodies made of conductive materials such as copper or aluminum. Or, the first side plate 16 and the second side plate 17 can also be insulators with conductive layers on their surfaces, so that the first side plate 16 and the second side plate 17 have good conductive performance.

[0102] It should be noted that when the first side plate 16 and the second side plate 17 have good conductive performance. The cavity formed by the floor 12, the reflector 11, the first side plate 16 and the second side plate 17 can effectively electromagnetic shield the first polarization transmission line 13 and the second polarization transmission line 14, prevent the signal energy of the first polarization transmission line 13 and the second polarization transmission line 14 from dissipating into the air, and reduce the signal transmission loss. In the above example, the floor 12 and the reflector 11 are fixedly connected through the first side plate 16 or the second side plate 17. In other examples, the floor 12 and the reflector 11 can also be connected by other structural members, which will not be elaborated here.

[0103] In addition, when setting the first polarization transmission line 13 and the second polarization transmission line 14, the first polarization transmission line 13 and the second polarization transmission line 14 can be fixed between the floor 12 and the reflector 11 through insulating brackets.

[0104] For example, as Figure 15 shown, in an example provided in this application, the antenna 10 further includes a first insulating bracket 18 and a second insulating bracket 19. One end of the first insulating bracket 18 is fixedly connected to the side of the first polarization transmission line 13 facing away from the floor 12, and the other end is fixedly connected to the reflector 11. One end of the second insulating bracket 19 is fixedly connected to the side of the second polarization transmission line 14 facing away from the floor 12, and the other end is fixedly connected to the reflector 11.

[0105] Specifically, the first polarization transmission line 13 can be fixedly connected to the reflector 11 through the first insulating bracket 18, so as to effectively fix the first polarization transmission line 13 between the floor 12 and the reflector 11. Correspondingly, the second polarization transmission line 14 can be fixedly connected to the reflector 11 through the second insulating bracket 19, so as to effectively fix the first polarization transmission line 13 between the floor 12 and the reflector 11.

[0106] In addition, in the example provided in this application, the first insulating bracket 18 is fixedly connected to the side of the first polarization transmission line 13 facing away from the floor 12, preventing the first insulating bracket 18 from intruding into the space between the first polarization transmission line 13 and the floor 12, which is beneficial to ensuring the signal transmission effect between the first polarization transmission line 13 and the floor 12. Avoiding the increase in signal loss when the signal is transmitted between the first polarization transmission line 13 and the floor 12 due to the intrusion of the first insulating bracket 18. Correspondingly, the second insulating bracket is fixedly connected to the side of the second polarization transmission line 14 facing away from the floor 12, preventing the second insulating bracket 19 from intruding into the space between the second polarization transmission line 14 and the floor 12, which is beneficial to ensuring the signal transmission effect between the second polarization transmission line 14 and the floor 12. Avoiding the increase in signal loss when the signal is transmitted between the second polarization transmission line 14 and the floor 12 due to the intrusion of the second insulating bracket 19.

[0107] When specifically setting, the first insulating bracket 18 can be a long strip structure extending along the length direction of the first polarization transmission line 13.

[0108] In addition, in other examples, the first insulating bracket 18 can also include a plurality of bracket structures in the shape of columns. The plurality of bracket structures in the shape of columns can be arranged in sequence along the length direction of the first polarization transmission line 13, so that the plurality of bracket structures in the shape of columns jointly connect the first polarization transmission line 13 and the reflector 11.

[0109] In addition, in some examples, the first insulating bracket 18 may include a jaw structure. The first polarized transmission line 13 may be fixed within the jaws, thereby achieving a fixed connection between the first insulating bracket 18 and the first polarized transmission line 13.

[0110] It should be noted that a part of the jaws will intrude into the space between the first polarized transmission line 13 and the floor 12. Therefore, between the first polarized transmission line 13 and the floor 12, there is not only an air layer but also a part of the jaws. However, since the volume of the intrusion of the jaws is small, it will not significantly increase the loss of the signal when it is transmitted between the first polarized transmission line 13 and the floor 12.

[0111] That is, including an air layer between the first polarized transmission line 13 and the floor 12 means that there is no other medium or there is a small amount of other medium between the first polarized transmission line 13 and the floor 12, so that when the signal is transmitted between the first polarized transmission line 13 and the floor 12, the loss of the signal during transmission will not be significantly increased due to the presence of an obvious medium. In addition, as Figure 16 shown, in some examples, the first insulating bracket 18 can also be used to fixedly connect the first polarized transmission line 13 and the floor 12. Specifically, one end of the first insulating bracket 18 can be fixedly connected to the side of the floor 12 facing the first polarized transmission line 13, and the other end of the first insulating bracket 18 can be fixedly connected to the first polarized transmission line 13.

[0112] When specifically setting, the specific structural shape of the first insulating bracket 18 can be reasonably selected according to the actual situation, which will not be elaborated here.

[0113] When setting the second insulating bracket 19 and the connection structure between the second insulating bracket 19 and the second polarized transmission line 14, it can be reasonably set with reference to the above-mentioned first insulating bracket 18 and the connection structure between the first insulating bracket 18 and the first polarized transmission line 13, which will not be elaborated here.

[0114] In addition, in the above examples, the first insulating bracket 18 and the second insulating bracket 19 are two independent structural members. In other examples, the first insulating bracket 18 and the second insulating bracket 19 can also be an integral structure, which can reduce the number of components in the antenna 10 and is beneficial to simplifying the assembly process.

[0115] In addition, as Figure 17 shown, in an example provided by the present application, the antenna 10 further includes a conductive post 191, the conductive post 191 is located between the floor 12 and the reflector 11, and the conductive post 191 is electrically connected to the floor 12.

[0116] When specifically setting, the structural type and setting method of the conductive post 191 can be diverse.

[0117] For example, as Figure 17 shown, in an example provided by the present application, the conductive post 191 and the floor 12 are of an integral structure. That is, both the conductive post 191 and the floor 12 are insulators with a conductive layer on their surfaces, and the conductive post 191 extends from the surface of the floor 12 towards the reflector 11.

[0118] Wherein, there may be a small gap between the conductive post 191 and the reflector 11 to couple the conductive post 191 and the reflector 11. Alternatively, the conductive post 191 can also be electrically connected to the reflector 11 through an elastic conductive structure.

[0119] In addition, the cross-sectional shape of the conductive post 191 can be a polygon such as a circle, an ellipse, a rectangle, or other irregular shapes.

[0120] In addition, during specific setting, one, two or more conductive posts 191 can be provided.

[0121] In addition, in some examples, the conductive post 191 can also be electrically connected to the reflector 11 and not electrically connected to the floor 12. Or, the conductive post 191 can be electrically connected to both the floor 12 and the reflector 11.

[0122] Or, the conductive post 191 and the reflector 11 can be of an integral structure.

[0123] Or, the conductive post 191 can be an independent structural member and can be fixedly connected to the floor 12 and / or the reflector 11 by means such as welding.

[0124] During actual application, the shape, quantity, position, and setting method of the conductive post 191 can be reasonably selected according to actual requirements, which will not be elaborated here.

[0125] In addition, as Figure 18 and Figure 19 shown, in an example provided by the present application, the antenna 10 further includes director plates 192. A plurality of director plates 192 are located on the side of the floor 12 away from the reflector 11, and the plurality of director plates 192 are arranged in one-to-one correspondence with the plurality of first polarization slots 121 and the plurality of second polarization slots 122. Among the correspondingly arranged director plates 192, first polarization slots 121, and second polarization slots 122, the director plates 192 are coupled to both the first polarization slots 121 and the second polarization slots 122.

[0126] Specifically, in an example provided by the present application, the director plates 192 are dual-polarization director plates, and the director plates 192 are coupled to both the first polarization slots 121 and the second polarization slots 122.

[0127] The electromagnetic wave radiated from the first polarization slot 121 can excite the director 192, so that the director 192 radiates electromagnetic waves outward. Correspondingly, the electromagnetic wave radiated from the second polarization slot 122 can excite the director 192, so that the director 192 radiates electromagnetic waves outward.

[0128] In the example provided in this application, by configuring the director 192, the radiation performance and directivity of the antenna 10 can be effectively improved, which is beneficial to improving the performance of the antenna 10.

[0129] It should be noted that in the example provided in this application, the floor 12 includes three first polarization slots 121 and three second polarization slots 122. The antenna 10 includes three directors 192, and each director 192 includes a first polarization radiator and a second polarization radiator, and each radiator is respectively coupled to the corresponding polarization slot. However, in other examples, the number of the first polarization slots 121, the second polarization slots 122 and the directors 192 can also be four, five or more, and this application does not limit the number of the first polarization slots 121, the second polarization slots 122 and the directors 192.

[0130] In addition, in other examples, the director 192 can also be polygonal or other structural shapes. When specifically configured, the director 192 can be selected from the currently commonly used types, and this application does not limit the specific structural shape of the director 192.

[0131] When setting the director 192, the director 192 can be fixedly connected to other components through a bracket.

[0132] For example, as Figure 19 shown, in an example provided in this application, the director 192 is fixedly connected to the floor 12 through a bracket. Specifically, one end of the bracket can be fixedly connected to the side of the floor 12 facing the director 192, and the other end of the bracket can be fixedly connected to the director 192.

[0133] When specifically setting, the bracket can be an independent structural member, or the bracket can also be a structure integrally formed with the floor 12.

[0134] Or, in other examples, the director 192 can also be fixedly connected to the reflector 11 through a bracket. Specifically, the floor 12 includes a through hole for the bracket to pass through. One end of the bracket can be fixedly connected to the reflector 11, and the other end is fixedly connected to the director 192.

[0135] In actual application, the antenna 10 can be applied to various different types of communication devices.

[0136] For example, as Figure 20As shown in the figure, the embodiment of the present application further provides a communication device 30, including any one of the above antennas. The communication device may further include a radio frequency processing unit, and the radio frequency processing unit may be connected to the feeding network in the antenna. The radio frequency processing unit may send radio frequency signals to the feeding network, and the feeding network efficiently transmits the radio frequency signals and radiates electromagnetic waves outward. In practical applications, the specific type of the communication device 30 is not limited in the present application. In addition, the type and quantity of the devices included in the communication device 30 may be reasonably selected and adjusted according to actual needs, which will not be elaborated here.

[0137] In various embodiments of the present application, if there is no special description and logical conflict, the terms and / or descriptions between different embodiments are consistent and can be referenced to each other. The technical features in different embodiments can be combined to form new embodiments according to their internal logical relationships.

[0138] In the present application, "a plurality of" means two or more. "And / or" describes the association relationship of associated objects and indicates that three relationships may exist. For example, A and / or B may represent: A exists alone, A and B exist simultaneously, and B exists alone, where A and B may be singular or plural.

[0139] It can be understood that the various numerical numbers involved in the embodiments of the present application are only for the convenience of description and are not used to limit the scope of the embodiments of the present application. The magnitudes of the serial numbers of the above processes do not mean the order of execution. The order of execution of each process should be determined according to its function and internal logic.

Claims

1. An antenna, characterized in that: include: A reflector having a reflective surface; A floor, arranged on one side of the reflecting surface of the reflecting plate, the floor having a plurality of first polarization slots and a plurality of second polarization slots; A first polarization transmission line coupled to the floor, wherein an air layer is included between the first polarization transmission line and the floor; The first polarization transmission line has a plurality of first coupling segments, and the plurality of first coupling segments are arranged in one-to-one correspondence with the plurality of first polarization slots; a second polarization transmission line coupled to the floor, with an air layer between the second polarization transmission line and the floor; The second polarization transmission line has a plurality of second coupling segments, and the plurality of second coupling segments are arranged in a one-to-one correspondence with the plurality of second polarization slots.

2. The antenna according to claim 1, characterized in that Along the extension direction of the first polarization transmission line, the cross-sectional shapes or areas of different regions or segments of the first polarization transmission line are the same or different; along the extension direction of the second polarization transmission line, the cross-sectional shapes or areas of different regions or segments of the second polarization transmission line are the same or different.

3. The antenna according to claim 1 or 2, characterized in that: The antenna further includes at least one third transmission line, wherein the third transmission line is coupled to the floor, and the third transmission line is not coupled to either the first polarization slot or the second polarization slot.

4. The antenna according to any one of claims 1 to 3, characterized in that: A first conductive protrusion is arranged around the edge of the first polarization slot, and the first conductive protrusion extends in a direction away from the reflection plate; A second conductive protrusion is disposed around the edge of the second polarization slot, and the second conductive protrusion extends in a direction away from the reflection plate.

5. The antenna according to claim 4, characterized in that: The first conductive protrusion is a flange arranged around the edge of the first polarization slot, or the first conductive protrusion is a plurality of protrusions arranged at intervals around the edge of the first polarization slot; The second conductive protrusion is a flange arranged along the edge of the second polarization slot, or the second conductive protrusion is a plurality of protrusions arranged at intervals along the edge of the second polarization slot.

6. The antenna according to claim 4 or 5, characterized in that: The height of the first conductive protrusion is greater than or equal to 1 / 20λ, where λ is the wavelength of the electromagnetic wave of the highest operating frequency of the antenna when propagating in the air; The height of the second conductive protrusion is greater than or equal to 1 / 20λ, where λ is the wavelength of the electromagnetic wave of the highest operating frequency of the antenna when propagating in the air.

7. The antenna according to any one of claims 1 to 6, characterized in that: In the length direction of the first polarization slot, the widths of the two ends of the first polarization slot are greater than the width of the middle portion of the first polarization slot; In the length direction of the second polarization slot, widths at both ends of the second polarization slot are greater than widths in the middle of the second polarization slot.

8. The antenna according to any one of claims 1 to 7, characterized in that: The first polarization slot and the second polarization slot are arranged to cross each other.

9. The antenna according to any one of claims 1 to 8, characterized in that: The first polarization transmission line is located between the floor and the reflection plate, and the second polarization transmission line is located between the floor and the reflection plate.

10. The antenna according to claim 9, characterized in that: The antenna also includes a first side plate and a second side plate; The first side plate and the second side plate are arranged opposite to each other, and the floor, the reflector, the first side plate and the second side plate together constitute a space for accommodating the first polarization transmission line and the second polarization transmission line; One end of the first side plate is connected to the floor, and the other end is connected to the reflective plate; one end of the second side plate is connected to the floor, and the other end is connected to the reflective plate.

11. The antenna according to claim 10, characterized in that: The first side plate is a conductive plate, the second side plate is a conductive plate, the first side plate is conductively connected to the floor, and the second side plate is conductively connected to the floor.

12. The antenna according to claim 11, characterized in that The first side plate is conductively connected to the reflective plate, and / or the second side plate is conductively connected to the reflective plate.

13. The antenna according to any one of claims 1 to 12, characterized in that: The antenna further includes a conductive column, wherein the conductive column is located between the floor and the reflector, and the conductive column is electrically connected to the floor and / or the reflector.

14. The antenna according to any one of claims 1 to 13, characterized in that The antenna also includes a first insulating support and a second insulating support; One end of the first insulating bracket is fixedly connected to a side of the first polarization transmission line away from the floor, and the other end is fixedly connected to the floor or the reflector; One end of the second insulating bracket is fixedly connected to a side of the second polarization transmission line away from the floor, and the other end of the second insulating bracket is fixedly connected to the floor or the reflecting plate.

15. The antenna according to claim 14, characterized in that The first insulating support and the second insulating support are an integrated structure.

16. The antenna according to any one of claims 1 to 15, characterized in that The floor is a metal plate.

17. The antenna according to claim 15, characterized in that The floor comprises a dielectric substrate and a metal layer located on at least one surface of the dielectric substrate.

18. The antenna according to claim 17, characterized in that The first insulating support, the second insulating support and the dielectric substrate are an integrated structure.

19. The antenna according to any one of claims 1 to 18, characterized in that The antenna further includes a plurality of guide plates, the plurality of guide plates are located on a side of the floor away from the reflector, and the plurality of guide plates are arranged in one-to-one correspondence with the plurality of first polarization slots and the plurality of second polarization slots; In the correspondingly arranged guide plate, the first polarization slot and the second polarization slot, the guide plate is coupled with both the first polarization slot and the second polarization slot.

20. The antenna according to claim 19, characterized in that The antenna further comprises a plurality of insulating fixing frames, wherein the plurality of insulating fixing frames are arranged in one-to-one correspondence with the plurality of guide plates; In the correspondingly arranged fixing frame and the guide plate, one end of the fixing frame is fixedly connected to the guide plate, and the other end is fixedly connected to the floor or the reflective plate.

21. A communication device, characterized in that: It comprises a radio frequency circuit and an antenna as described in any one of claims 1 to 20, wherein the radio frequency processing unit is located on a side of the reflector plate away from the reflective surface, and the radio frequency processing unit is connected to the first polarization transmission line and the second polarization transmission line.

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