CN111740211A - Antenna housing and base station antenna - Google Patents
Antenna housing and base station antenna Download PDFInfo
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- CN111740211A CN111740211A CN201910229077.9A CN201910229077A CN111740211A CN 111740211 A CN111740211 A CN 111740211A CN 201910229077 A CN201910229077 A CN 201910229077A CN 111740211 A CN111740211 A CN 111740211A
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- 239000012943 hotmelt Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229920006324 polyoxymethylene Polymers 0.000 description 2
- -1 PolyOxyMethylene Polymers 0.000 description 1
- 230000004308 accommodation Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/42—Housings not intimately mechanically associated with radiating elements, e.g. radome
- H01Q1/422—Housings not intimately mechanically associated with radiating elements, e.g. radome comprising two or more layers of dielectric material
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/42—Housings not intimately mechanically associated with radiating elements, e.g. radome
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
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- Details Of Aerials (AREA)
Abstract
The application provides an antenna housing and a base station antenna. The antenna cover comprises: a first cover for transmitting electromagnetic waves radiated from the antenna and a second cover for fixing the antenna; the first cover body comprises a first connecting part and a second connecting part which are opposite, the second cover body comprises a third connecting part and a fourth connecting part which are opposite, the first connecting part is connected with the third connecting part, the second connecting part is connected with the fourth connecting part, and the first cover body and the second cover body enclose an accommodating space for accommodating an antenna; the first cover body comprises a plurality of layers of panels arranged at intervals, the plurality of layers of panels are located between the first connecting portion and the second connecting portion, and the plurality of layers of panels cover the radiation surface of the antenna. In this application, cover multilayer panel through the radiating surface at the antenna, realize the seamless coverage to the antenna, improve the antenna isolation, and then promote the antenna performance.
Description
Technical Field
The application relates to the technical field of communication, in particular to an antenna housing and a base station antenna.
Background
With the rapid development of communication technology, base station antennas as key components are becoming more and more important. Since the outdoor antenna is usually placed in the open air to work, and directly attacked by storm, ice, snow, sand, solar radiation and the like in nature, the accuracy of the antenna is reduced, the service life is shortened, and the working reliability is poor. In order to protect the antenna from the external environment, a radome is usually disposed in the antenna housing.
Currently, in the fifth generation communication network (5G), in order to improve the spectrum utilization rate and channel capacity of the communication system, a large-scale multiple-input multiple-output (Massive MIMO) antenna is mostly adopted for a base station antenna. The Massive MIMO antenna is composed of a large number of antenna units, and then the antenna housing is positioned in front of the antenna units and can absorb and reflect electromagnetic waves radiated by the antenna units, so that the isolation between the antenna units is directly or indirectly influenced, the performance of the antenna is further influenced, and the communication quality of a wireless communication system is influenced to a certain extent.
Disclosure of Invention
The application provides an antenna house and base station antenna to the realization improves the antenna isolation to the seamless coverage of antenna, and then promotes the antenna performance.
In a first aspect, the present application provides a radome, comprising: a first cover body and the second cover body that is used for seeing through the electromagnetic wave of antenna radiation, first cover body is including relative first connecting portion and second connecting portion, the second cover body is including relative third connecting portion and fourth connecting portion, first connecting portion are connected with the third connecting portion, the second connecting portion are connected with the fourth connecting portion, first cover body and second cover body enclose into the accommodation space that is used for holding the antenna, so, first cover body combines together with the second cover body and forms above-mentioned radome, wherein, first cover body is including the multilayer panel that the interval set up, multilayer panel is located between first connecting portion and the second connecting portion of the first cover body, multilayer panel covers in the radiating surface of antenna.
In this application, cover multilayer panel through the radiating surface at the antenna, realize the seamless coverage to the antenna, improve the antenna isolation, and then promote the antenna performance.
In some possible embodiments according to the first aspect, the multi-layer panel in the first enclosure is formed by an integral molding process.
In this application, adopt the first cover body of integrated into one piece technology preparation, can save the setting and be used for supporting the support piece of dielectric plate above the antenna element, simplify antenna structure to can also reduce the assembly operation of antenna, the antenna setting of being convenient for.
In some possible embodiments, based on the first aspect, the outermost panel of the multi-layer panel includes a straight first portion, a second portion extending perpendicularly from a first end of the first portion in the first direction, and a third portion extending perpendicularly from a second end of the first portion in the first direction, the first end is opposite to the second end, that is, the outermost panel has a reverse-l shape, and the other panels of the multi-layer panel are flat plates.
Based on the first aspect, in some possible embodiments, a connection portion of the first portion and the second portion is chamfered, and a connection portion of the first portion and the third portion is chamfered, so that the wind load capacity of the radome can be improved. In this application, the chamfer can be the chamfer angle to further improve the wind-load capacity of antenna house.
Based on the first aspect, in some possible embodiments, the multilayer panel is a curved panel, and the first cover body is arc-shaped to improve the wind load capacity of the radome.
In some possible embodiments according to the first aspect, the distance between two adjacent layers of panels in the multilayer panel is 0.02 times to 0.25 times of the operating wavelength, where the operating wavelength may be the wavelength of the electromagnetic wave radiated by the antenna.
In some possible embodiments according to the first aspect, the multilayer panel is two-layered, that is, the first cover has a two-layered structure.
Based on the first aspect, in some possible embodiments, when the first cover is a double-layer structure, a first panel of the two panels is located 0.25 times of the operating wavelength from the radiation surface of the antenna, and a second panel of the two panels is located 0.3 times to 0.5 times of the operating wavelength from the radiation surface of the antenna.
Based on the first aspect, in some possible embodiments, the multilayer panel has a panel thickness of 1mm to 4mm, and the multilayer panel has a dielectric constant ranging from 2.5 to 5.
In some possible embodiments, the multilayer panel is filled with a gas between two adjacent layers of panels.
Based on the first aspect, in some possible embodiments, a reinforcing rib for supporting the multilayer panel is disposed between two adjacent layers of panels in the multilayer panel to support the layers of panels, so that the wind load capacity of the antenna can be improved, and the effects of reinforcing the cover body, preventing the cover body from deforming and the like can be achieved.
In some possible embodiments, the second cover has an inner sidewall provided with a fixing member for fixing the antenna.
In some possible embodiments, the fixing member is a guide rail, which facilitates mounting the antenna inside the radome.
Based on the first aspect, in some possible embodiments, the radome is in a closed state in a cross-sectional direction to close and protect the antenna.
In a second aspect, the present application provides a base station antenna, comprising: the antenna comprises an antenna array and a reflecting plate, wherein the antenna array comprises a plurality of antenna units in the same frequency band and a feed network, and the antenna array is arranged on the reflecting plate, such as an MIMO (multiple input multiple output) antenna, a Massive MIMO (multiple output) antenna and the like; as for the antenna housing according to the first aspect, the antenna is disposed in the antenna housing, and the antenna housing protects the antenna.
It should be understood that the second aspect of the present application is consistent with the technical solution of the first aspect of the present application, and similar advantageous effects are obtained in various aspects and corresponding possible embodiments, and thus, detailed description is omitted.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments or the background art of the present application, the drawings required to be used in the embodiments or the background art of the present application will be described below.
Fig. 1 is a block diagram of a wireless communication system according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of a base station antenna in the embodiment of the present application;
fig. 3 is a schematic structural diagram of a radome in an embodiment of the present application;
FIG. 4 is a first schematic structural diagram of a first cover in an embodiment of the present disclosure;
FIG. 5A is a first schematic view of an outermost panel of the first housing according to an embodiment of the present disclosure;
FIG. 5B is a second schematic structural diagram of an outermost panel of the first housing in an embodiment of the present disclosure;
FIG. 6 is a second schematic structural diagram of the first cover in the embodiment of the present application;
FIG. 7 is a third schematic structural diagram of the first cover in the embodiment of the present application;
FIG. 8A is a first schematic diagram illustrating a relative relationship between a first cover and a second cover in an embodiment of the present disclosure;
FIG. 8B is a second schematic diagram illustrating the relative relationship between the first cover and the second cover in an embodiment of the present application;
fig. 9 is a schematic structural diagram of a radome in an embodiment of the present application;
fig. 10 is a schematic structural diagram of a base station antenna in the embodiment of the present application;
fig. 11 is a schematic diagram illustrating the comparison of the isolation between the antenna elements in the dual-layer radome and the conventional radome in the embodiment of the present application.
Detailed Description
The embodiments of the present application will be described below with reference to the drawings. In the following description, reference is made to the accompanying drawings which form a part hereof and in which is shown by way of illustration specific aspects of embodiments of the present application or in which specific aspects of embodiments of the present application may be employed. It should be understood that embodiments of the present application may be used in other ways and may include structural or logical changes not depicted in the drawings. The following detailed description is, therefore, not to be taken in a limiting sense, and the scope of the present application is defined by the appended claims. Further, it is to be understood that features of the various exemplary embodiments and/or aspects described herein may be combined with each other, unless explicitly stated otherwise.
Fig. 1 is a schematic structural diagram of a wireless communication system in an embodiment of the present application, and referring to fig. 1, the wireless communication system 10 may include a base station 11 and a User Equipment (UE) 12. The base station 11 may communicate with a UE 12. It should be noted that the base station and the UE included in the wireless communication system shown in fig. 1 are only an example. In the embodiment of the present application, the type and number of the network elements included in the wireless communication system, and the connection relationship between the network elements are not limited thereto.
The above-mentioned wireless communication system may be a communication system supporting a Fourth Generation (4G) access technology, such as an LTE access technology; alternatively, the communication system may be a communication system supporting a Fifth Generation (5G) access technology, such as NR access technology; alternatively, the communication system may also be a communication system supporting a plurality of wireless technologies, for example, a communication system supporting an LTE technology and an NR technology. In addition, the communication system may also be adapted for future-oriented communication technologies.
The base station in fig. 1 may be a device for supporting the UE to Access the wireless communication system on the Access network side, and may be, for example, an evolved NodeB (eNB) in a 4G Access technology communication system, a next generation NodeB (gNB) in a 5G Access technology communication system, a Transmission Reception Point (TRP), a Relay Node (Relay Node), an Access Point (AP), and the like.
The UE12 in fig. 1 may be a device that provides voice or data connectivity to a user, and may also be referred to as a Terminal, a mobile STAtion (mobile STAtion), a subscriber unit (subscriber unit), a STAtion (STAtion), or a Terminal Equipment (TE). The UE may be a cellular phone (cellular phone), a Personal Digital Assistant (PDA), a wireless modem (modem), a handheld device (hand), a laptop computer (laptop computer), a cordless phone (cordless phone), a Wireless Local Loop (WLL) station, a tablet (pad), or the like. With the development of wireless communication technology, all devices that can access a wireless communication system, can communicate with the network side of the wireless communication system, or communicate with other devices through the wireless communication system may be UEs in the embodiments of the present application, such as terminals and automobiles in intelligent transportation, home devices in smart homes, power meter reading instruments in smart grid, voltage monitoring instruments, environment monitoring instruments, video monitoring instruments in smart security networks, cash registers, and so on. In the embodiment of the present application, the UE may communicate with the base station. The UE may be stationary or mobile.
In practical applications, the base station in the wireless communication system is often located outdoors, and outdoor environmental factors such as storm, ice, snow, dust, and solar radiation affect the antenna performance of the base station, and thus affect the communication quality of the wireless communication system. Fig. 2 is a schematic structural diagram of the base station antenna in the embodiment of the present application, and referring to fig. 2, in order to reduce the influence of the outdoor environment on the antenna performance, an antenna cover 22 may be covered outside the antenna 21, that is, the antenna 21 is covered inside the antenna cover 22. Further, although the antenna cover covered outside the antenna can reduce the influence of the outdoor environment on the antenna, since the antenna 21 includes a plurality of antenna elements 211 in the same frequency band, when the antenna elements 211 in the antenna cover 22 radiate electromagnetic waves, coupling interference occurs between the electromagnetic waves radiated by the antenna elements 211, which affects the performance of the antenna. Then, in order to reduce interference between the antenna units and improve the antenna isolation, a loading piece 23 is disposed above each antenna unit 211 and between the upper surface of the radome 22, so that when the electromagnetic waves radiated by the antenna units 211 pass through the loading piece 23 above, refraction of different degrees occurs according to the material, size, position, and the like of the loading piece 23, so that the radiation range and radiation direction of the electromagnetic waves are changed accordingly, thereby reducing coupling interference between the antenna units 211 and further improving the antenna isolation. Generally, the loading sheet 23 may be made of PolyOxyMethylene (POM), glass fiber reinforced plastic, epoxy resin, or the like.
Here, since there is a space between the antenna elements, the loading pieces correspond to the antenna elements one to one, and then there is a gap between the loading pieces. When the antenna unit radiates electromagnetic waves, due to gaps between the loading pieces, the electromagnetic waves still have coupling interference to a certain degree, the performance of the antenna is affected, and the communication quality of a wireless communication system is further affected.
In addition, since the loading plates need to be supported and fixed above the antenna units, for antennas including a large number of antenna units, such as MIMO antennas, Massive MIMO antennas, and the like, the assembly of the antennas is complicated and the cost is high due to the large number of loading plates and the supporting members.
In order to solve the technical problem, an embodiment of the present application provides an antenna cover, where the antenna cover may be applied to a base station in the wireless communication system, and when an antenna of the base station is protected, the isolation of the antenna is improved, the performance of the antenna is improved, and further, the communication quality of the wireless communication system is improved.
Fig. 3 is a schematic structural diagram of a radome in an embodiment of the present application, and referring to fig. 3, the radome 30 (shown by a solid line in fig. 3) may include: a first cover 31 for transmitting electromagnetic waves radiated from an antenna 33 (shown by a dotted line in fig. 3) and a second cover 32 for fixing the antenna, wherein the first cover 31 and the second cover 32 are connected such that the first cover 31 and the second cover 32 enclose an accommodating space for accommodating the antenna. The first housing 31 includes a plurality of panels 311 spaced apart from each other, and the plurality of panels 311 cover a radiation surface 331 of the antenna.
Still referring to fig. 3, the first cover 31 includes a first connecting portion 312 and a second connecting portion 313 which are opposite to each other, the second cover 32 includes a third connecting portion 321 and a fourth connecting portion 322 which are opposite to each other, the first connecting portion 312 is connected to the third connecting portion 321, and the second connecting portion 313 is connected to the fourth connecting portion 322, so that the first cover 31 is connected to the second cover 32, and the first cover 31 and the second cover 32 enclose the accommodating space. The multi-layer panel 311 of the first cover 31 is positioned between the first connection portion 312 and the second connection portion 313.
It should be noted that the multi-layer panel may be a two-layer panel, a three-layer panel, a four-layer panel, and the like, and those skilled in the art may design the multi-layer panel according to the actual requirement of the antenna isolation, and the embodiment of the present application is not specifically limited.
As can be seen from the above, the first cover body is a part of the radome, and may include a multilayer panel formed by stacking a plurality of panels, a gap is provided between adjacent panels, and the first cover body may cover a radiation surface of the antenna fixed in the second cover body, so that the electromagnetic wave radiated by the antenna may propagate through the multilayer panel. Therefore, the seamless coverage of the antenna is realized by covering the radiation surface of the antenna with the plurality of layers of panels arranged at intervals, so that the isolation of the antenna is improved, the performance of the antenna is further improved, and the communication quality of a wireless communication system is improved.
First, the first cover is described.
In this embodiment of the present application, in order to implement seamless coverage on an antenna, each layer of panel in the multilayer panel may be a whole panel, or may be a panel formed by seamlessly splicing a plurality of panels, which is not limited in this embodiment of the present application.
Further, the multilayer panel can be fixed together through fixing pieces such as screws, clamping pieces and the like, and can also be fixed together through glue connection, hot melt connection and the like, so that two opposite connecting parts of the first cover body are formed, and the first cover body is connected with the second cover body through the two connecting parts. For example, the radome is a double-layer radome, the first radome is a double-layer structure, the multilayer panel is a double-layer panel, fig. 4 is a schematic structural diagram of the first radome in this embodiment, see fig. 4, the double-layer panel includes a first panel 41 and a second panel 42, the first panel 41 and the second panel 42 are fixed together by using screws 43, for example, a first end 421 of the second panel 42 and a first end 411 of the first panel 41 are fixed together by using screws 43 to form a first connection portion of the first radome, the first connection portion is then connected with a third connection portion of the second radome, a second end 422 of the second panel 42 and a second end 412 of the first panel 41 are fixed together by using screws 43 to form a second connection portion of the first radome, and the first connection portion is then connected with a fourth connection portion of the second radome. Of course, the multi-layer panel can also be manufactured by adopting an integral molding process.
In the embodiment of the application, because the multilayer panel is fixed together through the fixing piece or by adopting an integrated molding process, a large number of supporting pieces arranged above the antenna unit and used for supporting the dielectric plate can be omitted, the antenna structure is simplified, the assembling operation of the antenna can be reduced, and the antenna installation is facilitated.
In order to adapt to different installation environments, the first cover body can be in the following two shapes without limitation.
In a first shape, the first enclosure is rectangular in whole, and in this case, fig. 5A is a schematic structural view of the outermost panel of the first enclosure in the embodiment of the present application, and as shown in fig. 5A, in the multilayer panel, the outermost panel 311a includes a straight first portion 51, a second portion 52 extending perpendicularly from a first end 511 of the first portion 51 in the first direction, and a third portion 53 extending perpendicularly from a second end 512 of the first portion 51 in the first direction. Here, the first end of the first portion and the second end of the first portion are opposite ends, and the first direction is a direction opposite to a radiation direction of the antenna.
When the first cover has the first shape, still referring to fig. 5A, the outermost panel of the multi-layered panel has a "" shape, and the other panels are flat plates, and the other panels can be fixed to the second portion and the third portion of the outermost panel by fasteners, respectively.
In some possible embodiments, in order to improve the wind load capacity of the radome, fig. 5B is a second structural diagram of the outermost panel of the first radome in the embodiment of the present application, and referring to fig. 5B, a connection portion 54 (shown in the dashed circle in the figure) between the first portion 51 and the second portion 52 of the outermost panel 311a is chamfered, and a connection portion 55 (shown in the dashed circle in the figure) between the first portion 51 and the third portion 53 is chamfered. In practical applications, the chamfers at the connection portions 54 and 55 may be chamfered.
In a second shape, the first cover is overall arc-shaped, and at this time, fig. 6 is a second structural schematic diagram of the first cover in the embodiment of the present application, and referring to fig. 6, the outermost panel 311a is a curved panel, and curvatures at any positions on the outermost panel are the same. The first end (namely the first connecting part of the first cover) and the second end (namely the second connecting part of the first cover) of the outermost panel are respectively connected with the third connecting part and the fourth connecting part which are opposite to the second cover.
Further, still referring to fig. 6, the other panels 311b in the multi-layer panel may also be curved panels, the curvature of any position on each layer of curved panel is the same, the distance between any two adjacent layers of curved panels is the same, the first end and the second end of each layer of panel are fixed together to form the first connecting portion 56 (shown in the dotted circle in the figure) and the second connecting portion 57 (shown in the dotted circle in the figure) of the first cover, the first connecting portion may be connected with the third connecting portion of the second cover, and the second connecting portion may be connected with the fourth connecting portion of the second cover. The wind load capacity of the radome can be improved by adopting the multilayer panel of the curved surface panel. As mentioned above, each layer of curved surface panel can be fixed together by a fixing member or by an integral molding process, and then connected with the second cover.
In the embodiment of the present application, the thickness of the panel of the multi-layer panel described in the above embodiment may be 1mm to 4mm, and the value of the dielectric constant of each layer of the panel may range from 2.5 to 5. Here, the multi-layer panel may be made of glass fiber reinforced plastic, PolyVinyl Chloride (PVC), or the like.
In some possible embodiments, no gas may be filled between two adjacent panels in the multi-layer panel, so that a vacuum is formed between the two adjacent panels; alternatively, the adjacent two panels may be filled with gas, such as air. Of course, other gases may be filled according to the working performance of the antenna, and the embodiment of the present application is not particularly limited.
In some possible embodiments, since the radome is often installed outdoors, in order to improve the wind load capacity of the antenna and to perform the functions of reinforcing the cover body, preventing the cover body from deforming, and the like, at least one reinforcing rib 71 for supporting the multilayer panel is disposed between two adjacent layers of the multilayer panel. For example, fig. 7 is a third schematic structural diagram of the first cover in the embodiment of the present application, and referring to fig. 7, the first cover 31 is a three-layer structure, and includes a first panel 311a, a second panel 311b, and a third panel 311c, two reinforcing ribs 71 are disposed between the first panel 311a and the second panel 311b, and one reinforcing rib 71 is disposed between the second panel 311b and the third panel 311c, in a specific implementation process, a person skilled in the art may determine the number of the reinforcing ribs according to different installation environments, and the embodiment of the present application is not limited specifically.
In some possible embodiments, in order to ensure the working performance of the antenna, the distance between two adjacent layers of panels in the multilayer panel described in the above embodiment may be 0.02 times to 0.25 times of the working wavelength, where the working wavelength may be the wavelength of the electromagnetic wave radiated by the antenna. For example, the distance between two adjacent panels is represented as d, the wavelength of electromagnetic waves radiated by the antenna is represented as λ, and then d ∈ [0.02 λ,0.25 λ ]. In practical application, the actual value of d may be determined according to the material and thickness of each layer of panel, the distance between the innermost layer of panel and the radiation surface of the antenna, and the working performance of the antenna, such as parameters of a directional pattern, isolation, standing wave, etc. of the antenna, which is not specifically limited in the embodiments of the present application.
For example, the radome is a double-layer radome, the first cover body is a double-layer structure, the multilayer panel is a double-layer panel, and when the first cover body is a double-layer structure, the first panel of the two-layer panel may be spaced from the radiation surface of the antenna by 0.25 λ, and the second panel of the two-layer panel, that is, the innermost panel, may be spaced from the radiation surface of the antenna by 0.3 λ to 0.5 λ.
Next, a second cover will be described.
In this embodiment, the second cover body is connected with the first cover body to form the antenna housing, and an accommodating space is enclosed, and the accommodating space can be used for accommodating and fixing the antenna. Here, the second cover may be a cover connected to two opposing connection portions (the first connection portion and the second connection portion) of the first cover, or may be a cover in which two opposing connection portions (the first connection portion and the second connection portion) of the first cover extend in a direction opposite to the antenna radiation direction, that is, in the first direction.
Specifically, when the second cover is a cover connected to two opposite connecting portions of the first cover, the third connecting portion and the fourth connecting portion of the second cover may be detachably connected to the first cover through the first connecting portion and the second connecting portion of the first cover, or may be fixedly connected to the first cover through the first connecting portion and the second connecting portion of the first cover. If the first cover body and the second cover body are detachably connected, the first cover body and the second cover body can be detachably connected through screws, clamping pieces and the like, and if the first cover body and the second cover body are fixedly connected, the first cover body and the second cover body can be fixedly connected together through glue connection, hot melt connection and the like. Of course, the first cover body and the second cover body may be connected in other manners, and the application is not particularly limited. When the second cover body is formed by extending the first connecting part and the second connecting part of the first cover body to the first direction, the first cover body and the second cover body are integrally formed, the first connecting part and the third connecting part are connected, and the second connecting part and the fourth connecting part are connected.
In some possible embodiments, fig. 8A is a schematic diagram of a relative relationship between the first cover and the second cover in the embodiment of the present application, referring to fig. 8A, the second cover 32 may be shaped like a '+', and the third connection portion 321 and the fourth connection portion 322 are respectively connected to the first connection portion 312 and the second connection portion 313 of the first cover 31, and at this time, the radome is in a closed state in the cross-sectional direction to achieve closed protection of the antenna 33. Alternatively, fig. 8B is a schematic diagram of a relative relationship between the first cover and the second cover in the embodiment of the present application, referring to fig. 8B, the second cover 32 may further include two side plates, such as a first side plate 32a and a second side plate 32B, and the third connection portion 312 of the first side plate 32a and the fourth connection portion 322 of the second side plate 32B are respectively connected to the first connection portion 312 and the second connection portion 313 of the first cover 31, at this time, the radome is in an "l-shape" in a cross-sectional direction and is in an open state, and the antenna 33 is fixed on inner side walls of the first side plate 32a and the second side plate 32B.
In some possible embodiments, since the antenna is disposed in the second housing, fixing members, such as screws, fasteners, guide rails, etc., for fixing the antenna are disposed on the inner side wall of the second housing, so as to mount the antenna in the radome.
The radome described in the above embodiment will be described below by taking the first radome as a two-layer structure as an example.
Fig. 9 is a schematic structural diagram of the radome in the embodiment of the application, see fig. 9, the radome includes a first panel 311a (outermost panel) and a second panel 311b (innermost panel), the first panel 311a and the second panel 311b are fixed together, and then are connected to the second cover 32, the second panel may be located 40mm directly above the antenna, the first panel may be located 10mm directly above the second panel, and both the first panel and the second panel may have a thickness of 3mm, where the first panel performs a reverse arc angle. At this time, the radome is closed in cross section, and the antenna is disposed in the accommodating space between the second panel 311b and the second cover 32.
In the embodiment of the application, the multi-layer panel covers the radiation surface of the antenna, so that seamless coverage of the antenna is realized, the isolation of the antenna is improved, and the performance of the antenna is further improved.
Based on the same inventive concept, embodiments of the present application provide a base station antenna, which can be applied to a base station in the above embodiments.
Fig. 10 is a schematic structural diagram of a base station antenna in the embodiment of the present application, and referring to fig. 10, the base station antenna includes: the antenna 33 comprises an antenna array and a reflecting plate, wherein the antenna array comprises a plurality of same-frequency-band antenna units and a feed network, and the antenna array is arranged on the reflecting plate; as with the radome 30 in the above embodiment, the antenna 33 is disposed inside the radome 30, and the radome 30 protects the antenna 33.
In practical application, the antennas may be MIMO antennas, Massive MIMO antennas, or the like, and of course, the antennas may also be antennas in other forms, and the antennas need to include an antenna array composed of a plurality of antenna units, which is not specifically limited in the embodiment of the present application.
For example, still taking the antenna cover as a dual-layer antenna cover as an example, the antenna may be composed of 8 rows of antenna arrays, the 8 rows of antenna arrays may be fixed on the reflector plate, the operating frequency range is 1710-2200MHz, the antenna units support + 45-45 dual-polarization operation, each row of antenna arrays may include a plurality of antenna units, and the reflector plate may be installed and fixed on the second cover body of the dual-layer antenna cover. Fig. 11 is a schematic diagram for comparing the isolation between the antenna units in the double-layer radome and the conventional radome in the embodiment of the application, and as shown in fig. 11, compared with the conventional radome shown in fig. 2, the isolation between the antenna units in the double-layer radome is greatly improved, and thus the antenna performance is improved.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
The above description is only an exemplary embodiment of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application are intended to be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (10)
1. A radome, comprising: a first cover for transmitting electromagnetic waves radiated from the antenna and a second cover for fixing the antenna; the first cover body comprises a first connecting part and a second connecting part which are opposite, the second cover body comprises a third connecting part and a fourth connecting part which are opposite, the first connecting part is connected with the third connecting part, the second connecting part is connected with the fourth connecting part, and the first cover body and the second cover body enclose an accommodating space for accommodating an antenna;
the first cover body further comprises a plurality of layers of panels arranged at intervals, the plurality of layers of panels are located between the first connecting portion and the second connecting portion, and the plurality of layers of panels cover the radiation surface of the antenna.
2. The radome of claim 1, wherein the multi-layer panel is formed using an integral molding process.
3. The radome of claim 1 or 2, wherein an outermost panel of the multilayer panels includes a straight first portion, a second portion extending perpendicularly from a first end of the first portion toward a first direction, and a third portion extending perpendicularly from a second end of the first portion toward the first direction, the first end being opposite the second end; the other panels of the multi-layer panel are flat panels.
4. The radome of claim 3, wherein a connection portion of the first portion and the second portion is chamfered, and a connection portion of the first portion and the third portion is chamfered.
5. The radome of any one of claims 1-2, wherein the multilayer panel is a curved panel and the first cover is curved.
6. The radome of any one of claims 1-5, wherein adjacent panels of the plurality of panels are separated from each other by 0.02 to 0.25 times the operating wavelength.
7. The radome of claim 6, wherein the multilayer panel has a panel thickness of 1mm to 4mm, and the multilayer panel has a dielectric constant ranging from 2.5 to 5.
8. The radome of any one of claims 1-7, wherein a stiffener for supporting the multilayer panel is disposed between adjacent two of the multilayer panels.
9. The radome of any one of claims 1 to 8, wherein a fixing member for fixing the antenna is provided on an inner sidewall of the second cover body.
10. A base station antenna, comprising:
the antenna comprises an antenna array and a reflecting plate, wherein the antenna array comprises a plurality of same-frequency-band antenna units and a feed network, and the antenna array is arranged on the reflecting plate;
the radome of any one of claims 1-9, wherein the antenna is disposed within the radome.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910229077.9A CN111740211A (en) | 2019-03-25 | 2019-03-25 | Antenna housing and base station antenna |
| PCT/CN2020/080733 WO2020192636A1 (en) | 2019-03-25 | 2020-03-23 | Antenna housing and base station antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910229077.9A CN111740211A (en) | 2019-03-25 | 2019-03-25 | Antenna housing and base station antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111740211A true CN111740211A (en) | 2020-10-02 |
Family
ID=72610994
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910229077.9A Pending CN111740211A (en) | 2019-03-25 | 2019-03-25 | Antenna housing and base station antenna |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN111740211A (en) |
| WO (1) | WO2020192636A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023225879A1 (en) * | 2022-05-24 | 2023-11-30 | 华为技术有限公司 | Metasurface coating, radome assembly and array antenna |
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| Publication number | Publication date |
|---|---|
| WO2020192636A1 (en) | 2020-10-01 |
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