CN219371373U - Radome, antenna and base station - Google Patents

Abstract

The disclosure provides an antenna housing, an antenna and a base station, and belongs to the technical field of communication. The radome is used for covering the reflecting plate and the antenna element of the antenna, and comprises a transmission part and a shielding part. The transmission part is positioned at the front side of the reflecting plate, and the shielding part is positioned at the rear side of the reflecting plate. The first metal film is arranged in the shielding part and can shield the backward radiation of the antenna element, so that the backward radiation of the antenna and the radiation of other antennas are prevented from generating signal interference. In addition, the first metal film is integrated in the antenna housing, so that the appearance and the size of the antenna housing are not changed, the number of parts included in the antenna is not increased, and the original process is not required to be changed and additional process is not required to be added in the process of assembling the antenna.

Description

Radome, antenna and base station

Technical Field

The disclosure relates to the field of communication technologies, and in particular, to an antenna housing, an antenna and a base station.

Background

With the continuous development of mobile communication, the communication capacity required by the system is continuously increased, and the distance between the antennas is also gradually increased.

Since the antenna generates both forward radiation and backward radiation, the backward radiation of the antenna may generate co-channel interference with the forward radiation of the antenna behind the antenna, thereby having a large influence on the network.

Therefore, how to reduce the backward radiation of the antenna is a problem to be solved in developing the design.

Disclosure of Invention

The present disclosure provides a radome, an antenna and a base station, the radome has a shielding portion, the shielding portion is located the rear side of the reflecting plate of the antenna, and has a first metal film in the shielding portion, the first metal film can shield the backward radiation of antenna element to can reduce the interference between the antenna. The technical schemes of the antenna housing, the antenna and the base station are as follows:

in a first aspect, the present disclosure provides a radome for housing a reflector plate and an antenna element of an antenna, the radome including a shielding portion and a transmitting portion. The shielding part is positioned at the rear side of the reflecting plate, a first metal film is arranged in the shielding part and used for shielding the backward radiation of the antenna element, and the rear side is the side of the reflecting plate, which is away from the antenna element. The transmission part is located at the front side of the reflection plate.

Wherein, the antenna element is fixed at the front side of the reflecting plate. A part of the signal radiated from the antenna element is diffracted from the edge of the reflecting plate to the rear side of the reflecting plate.

The radome can withstand the influence of the external severe environment in mechanical performance, thereby playing a role in protecting devices inside the antenna from the external environment. And, the transmission part has good electromagnetic wave penetration characteristics in terms of electrical performance, so that the forward radiation of the antenna does not generate great energy loss after passing through the transmission part.

According to the technical scheme, the shielding part of the radome is positioned at the rear of the reflecting plate, and the first metal film is arranged in the shielding part, so that the shielding part can shield signals diffracted from the edge of the reflecting plate to the rear side of the reflecting plate, and therefore the backward radiation of the antenna oscillator is shielded, and the backward radiation of the antenna and the radiation of other antennas are prevented from generating signal interference.

And moreover, the first metal film is integrated in the antenna housing, so that the shape and the size of the antenna housing are not required to be changed, and the number of parts included in the antenna is not required to be increased, and therefore, the original working procedure is not required to be changed and a new working procedure is not required to be added in the process of assembling the antenna.

In one possible implementation, the width of the shielding portion is greater than the width of the reflection plate. Thus, most of the signal diffracted from the edge of the reflecting plate can be shielded by the shielding portion, so that the shielding effect of the shielding portion on the signal diffracted from the edge of the reflecting plate can be optimized.

In one possible implementation, the shield includes a first glass fiber mat, a second glass fiber mat, a first glass fiber veil layer, and a first metal film. The first glass fiber felt and the second glass fiber felt are respectively attached to two sides of the first glass fiber yarn layer, and the first metal film is located between the first glass fiber felt and the second glass fiber felt.

The glass fiber felt (first glass fiber felt and second glass fiber felt) and the first glass fiber yarn layer have good heat resistance, corrosion resistance and insulativity, and have high mechanical strength, so that the radome can have good chemical and mechanical properties.

Simultaneously, the density of glass fiber felt and first glass fiber yarn layer is lower, can make the whole weight of radome lighter, and then makes the whole weight of antenna lighter.

In one possible implementation, the first glass fiber mat, the second glass fiber mat, and the first glass fiber mat layer are bonded by a resin material.

In one possible implementation, the first metal film is located in the first fiberglass yarn layer, thereby facilitating the fabrication of the radome.

In one possible implementation, the first metal film is located between the first glass fiber mat and the first glass fiber veil layer.

In one possible implementation, the first metal film is located between the second glass fiber mat and the first glass fiber veil layer.

In one possible implementation, the first metal film is an aluminum metal film.

In one possible implementation, the first metal film includes a plurality of first metal film units, so that when the signal reaches the first metal film, diffraction occurs at the plurality of first metal film units, and during the diffraction, the energy of the signal is gradually attenuated, thereby realizing the shielding of the signal by the first metal film. In addition, the specific frequency band of the signal shielded by the first metal film can be adjusted by adjusting the shapes and arrangement modes of the plurality of first metal film units.

In one possible implementation, the first metal film includes a first support layer and a plurality of first metal film units, and the plurality of first metal film units are attached to the first support layer. In this way, a plurality of first metal film units can be integrated into one film, so that the plurality of metal film units can be conveniently and simultaneously placed between the first glass fiber felt and the second glass fiber felt.

In one possible implementation, the plurality of first metal film units are arranged periodically.

In one possible implementation, the first metal film is provided with a choke groove, so that when a signal passes through the choke groove, the signal is attenuated, and shielding of the signal is achieved. Further, by adjusting the shape, size, and the like of the choke groove, the specific frequency band of the signal shielded by the first metal film can be adjusted.

In one possible implementation, the transmission part has a second metal film therein, the second metal film being used for transmitting signals of the operating frequency band and shielding signals of the non-operating frequency band.

In one possible implementation, the transmissive portion includes a third glass fiber mat, a fourth glass fiber mat, a second glass fiber veil layer, and a second metal film. The third glass fiber felt and the fourth glass fiber felt are respectively attached to two sides of the second glass fiber yarn layer, and the second metal film is positioned between the third glass fiber felt and the fourth glass fiber felt.

In one possible implementation, the second metal film is located in the second fiberglass yarn layer, thereby facilitating the fabrication of the radome.

In one possible implementation manner, the second metal film includes a plurality of second metal film units, and when the signal in the non-working frequency band reaches the second metal film, diffraction occurs at the plurality of second metal film units, and during the diffraction process, the energy of the signal in the non-working frequency band is gradually attenuated, so that the shielding of the signal in the non-working frequency band by the second metal film is realized. When the signal of the working frequency band reaches the second metal film, the signal can be directly transmitted out of the second metal film, so that the normal operation of the antenna is ensured.

The frequency band of the signals shielded by the second metal film can be adjusted by adjusting the shapes and the arrangement modes of the second metal film units.

In one possible implementation, the second metal film includes a second support layer and a plurality of second metal film units, and the plurality of second metal film units are attached to the second support layer. In this way, the plurality of second metal film units can be integrated into one film, so that the plurality of second metal film units can be conveniently and simultaneously placed between the third glass fiber felt and the fourth glass fiber felt.

In one possible implementation, the plurality of second metal film units are arranged periodically.

In a second aspect, the present disclosure provides an antenna comprising a reflector plate, an antenna element and a radome according to any one of the first aspects. The antenna element is fixed on the front side of the reflecting plate. The radome covers the reflecting plate and the antenna element, the transmission part of the radome is positioned at the front side of the reflecting plate, and the shielding part of the radome is positioned at the rear side of the reflecting plate.

The antenna provided by the present disclosure may be a directional antenna, for example, a base station antenna, a wireless local area network WIFI (wireless fiselity, WIFI) antenna, and the like.

In a third aspect, the present disclosure provides a base station comprising an antenna as described in the second aspect.

Wherein the antenna may be referred to as a base station antenna (Antenna of base station).

A base station, which may also be referred to as an access network device, may be located in a base station subsystem (base btation bubsystem, BBS), a terrestrial radio access network (UMTS terrestrial radio access network, UTRAN), or an evolved terrestrial radio access network (evolved universal terrestrial radio access, E-UTRAN) for performing cell coverage of signals to enable communication between a terminal and a wireless network.

The base station may be a base transceiver station (base transceiver station, BTS) in a global system for mobile communications (global system for mobile comunication, GSM) or (code division multiple access, CDMA) system, a node B (NodeB, NB) in a wideband code division multiple access (wideband code division multiple access, WCDMA) system, an evolved node B (eNB or eNodeB) in a long term evolution (long term evolution, LTE) system, or a radio controller in a cloud radio access network (cloud radio access network, CRAN) scenario. Or the base station may be a relay station, an access point, a vehicle-mounted device, a wearable device, a g node (gnob or gNB) in a New Radio (NR) system, an access network device in a future evolution network, or the like.

Drawings

Fig. 1 is a schematic diagram of an antenna provided by an embodiment of the present disclosure;

fig. 2 is a schematic diagram of an antenna provided by an embodiment of the present disclosure;

FIG. 3 is a partial schematic view of a shield provided by an embodiment of the present disclosure;

FIG. 4 is a partial schematic view of a shield provided by an embodiment of the present disclosure;

FIG. 5 is a partial schematic view of a shield provided by an embodiment of the present disclosure;

FIG. 6 is a schematic illustration of a first metal film provided by an embodiment of the present disclosure;

FIG. 7 is a schematic illustration of a first metal film provided by an embodiment of the present disclosure;

FIG. 8 is a schematic illustration of a first metal film provided by an embodiment of the present disclosure;

FIG. 9 is a schematic illustration of a first metal film provided by an embodiment of the present disclosure;

FIG. 10 is a schematic illustration of a first metal film provided by an embodiment of the present disclosure;

fig. 11 is a schematic diagram of a pattern of an antenna provided by an embodiment of the present disclosure;

fig. 12 is a schematic diagram of an antenna provided by an embodiment of the present disclosure;

FIG. 13 is a partial schematic view of a transmissive portion provided by an embodiment of the present disclosure;

fig. 14 is a schematic diagram of an antenna provided by an embodiment of the present disclosure;

FIG. 15 is a partial schematic view of a transmissive portion provided by an embodiment of the present disclosure;

FIG. 16 is a partial schematic view of a transmissive portion provided by an embodiment of the present disclosure;

FIG. 17 is a partial schematic view of a transmissive portion provided by an embodiment of the present disclosure;

FIG. 18 is a schematic illustration of a second metal film provided by an embodiment of the present disclosure;

fig. 19 is a schematic view of a radome provided by an embodiment of the present disclosure;

fig. 20 is a schematic view of a radome provided by an embodiment of the present disclosure.

Description of the drawings

100. The antenna comprises a reflecting plate 200, an antenna oscillator 300 and an antenna housing;

1. a shielding part 11, a first glass fiber felt 12, a second glass fiber felt 13, a first glass fiber yarn layer 14, a first metal film 140, a choke groove 141, a first supporting layer 142 and a first metal film unit;

2. the transmission part, 21, the third glass fiber felt, 22, the fourth glass fiber felt, 23, the second glass fiber yarn layer, 24, the second metal film, 241, the second support layer, 242 and the second metal film unit.

Detailed Description

The technical scheme provided by the embodiment of the disclosure can be applied to a communication system, wherein the communication system can comprise a base station and a terminal, and wireless communication can be realized between the base station and the terminal. The base station is provided with an antenna to realize the transmission of signals in space, and the antenna can be mounted on a pole or an iron tower through a bracket so as to be convenient for the antenna to receive or transmit the signals.

The antenna generally includes a reflector plate 100, an antenna element 200, a radome 300, and associated circuitry and electrical devices, etc., such as a feed network. The antenna element 200 is fixed to the front side of the reflection plate 100, and the antenna cover 300 covers the reflection plate 100 and the antenna element 200.

The antenna element 200 may also be called an element, a radiating element, an antenna element, etc., and the antenna element 200 is made of a metal with good conductivity, so that the antenna element 200 can radiate or receive antenna signals effectively. The number of antenna elements 200 may be one or more, and the frequencies of the plurality of antenna elements 200 may be the same or different.

The reflection plate 100 may also be referred to as a chassis, an antenna panel, a metal reflection surface, or the like, and the antenna element 200 is located at the front side of the reflection plate 100. The reflection plate 100 may reflect and collect the received signal at a receiving point (the antenna element 200), thereby greatly enhancing the receiving or transmitting ability of the signal. Meanwhile, the reflection plate 100 can also function as a shield for signals radiated backward from the antenna element 200 and as a shield for interference signals from the rear side of the reflection plate 100.

Currently, a three-sector scheme is generally adopted in a base station, namely three antennas are uniformly arranged along the circumferential direction, the backward direction of each antenna faces the center of the base station, and the forward direction of each antenna faces the outer side. Since the forward radiation range of each antenna is not less than 120 °, the three-sector antenna can achieve 360 ° signal coverage centered on the base station.

Because the distance between three antennas in the three-sector antenna is relatively close, the backward radiation of the antenna is easy to generate co-channel interference with the forward radiation of other antennas, so that interference is generated on the signals transmitted and received by the other antennas.

The front-to-back ratio is generally used to indicate how well the antenna suppresses the backward radiation, and refers to the ratio of the power flux density in the maximum radiation direction (0 ° direction) of the forward radiation to the maximum power flux density in the vicinity of the opposite direction (e.g., in the range of 160 ° to 200 °), the larger the front-to-back ratio, the smaller the backward radiation (or reception) of the antenna.

In the related art, in order to reduce the backward radiation of the antenna, the width of the reflection plate 100 is generally increased by increasing the front-to-back ratio, so that the energy diffracted to the rear of the antenna by the edge of the reflection plate 100 is reduced by the electromagnetic wave signal radiated from the antenna element 200, and the effect of reducing the backward radiation and increasing the front-to-back ratio can be achieved. But the antenna is now being developed toward miniaturization such that the antenna inner space is small so that the width of the reflection plate 100 cannot be excessively large.

Another common way is to optimize the structure of the antenna element 200, reduce the backward radiation thereof, and achieve the function of increasing the front-to-back ratio, but the optimization technique of the antenna element 200 is complex, and the effect is general, and the cost is increased. The antenna element 200 is not uniform in structure and thus cannot be used as a general-purpose method because different antennas have different performances.

In view of the above-described technical problems, the present disclosure provides a radome 300, which can enhance the backward radiation shielding generated to an antenna without changing the width of the reflection plate 100 and without changing the structure of the antenna element 200. The radome 300 provided in the embodiment of the present disclosure is described below as an example:

as shown in fig. 1, the radome 300 includes a shielding part 1 and a transmitting part 2, the shielding part 1 being located at the rear side of the reflecting plate 100, the shielding part 1 having a first metal film 14 inside, the first metal film 14 for shielding the backward radiation of the antenna element 200. The transmissive part 2 is located at the front side of the reflective plate 100.

Since the shielding part 1 is located at the rear side of the reflection plate 100 and has the first metal film 14 inside, the shielding part 1 (or referred to as the first metal film 14) can shield a signal diffracted from the edge of the reflection plate 100 to the rear of the reflection plate 100, thereby shielding the backward radiation of the antenna element 200 and reducing the signal interference of the backward radiation of the present antenna to other antennas. Meanwhile, the first metal film 14 can also shield signals from other antennas so as to reduce interference of the other antennas to the antenna.

In addition, by integrating the first metal film 14 inside the radome 300, it is not necessary to change the outer shape and size of the radome 300 and to increase the number of parts included in the antenna, and thus, it is not necessary to change the existing assembly process and to add a new assembly process.

In some examples, as shown in fig. 2, the width of the shielding part 1 is greater than the width of the reflection plate 100, that is, the width of the first metal film 14 is greater than the width of the reflection plate 100. In this way, most of the signal diffracted from the edge of the reflection plate 100 can be shielded by the shielding portion 1, so that the shielding effect of the shielding portion 1 on the signal diffracted from the edge of the reflection plate 100 can be optimized.

In addition, fig. 2 shows one possible boundary of the shielding part 1 and the transmitting part 2, and in practical application, the boundary may be adjusted according to the range of shielding required, and may be adjusted according to the width of the reflection plate 100. As shown in fig. 2, the rear side of the boundary is a shielding portion 1, and the front side of the boundary is a transmitting portion 2.

The disclosed embodiments are not limited to the material of the body of the radome 300, wherein the body of the radome 300 may refer to the portions of the radome 300 other than the first metal film 14 and the second metal film 24 (if present) described below.

In some examples, the material of the main body of the radome 300 may be glass fiber reinforced plastic (frp), which may also be referred to as fiber reinforced plastic (fiber reinforced plastics, GFRP), generally refers to reinforced plastic with glass fiber reinforced unsaturated polyester, epoxy and phenolic resin matrix, and glass fiber or its products as reinforcing material.

In the following, taking a glass fiber reinforced plastic as an example of a material of the main body of the radome 300, an implementation manner of the shielding portion 1 will be exemplarily described:

in some examples, as shown in fig. 3-5, the shield 1 includes a first glass fiber mat 11, a second glass fiber mat 12, a first glass fiber veil layer 13, and a first metal film 14. The first glass fiber mat 11 and the second glass fiber mat 12 are respectively attached to both sides of the first glass fiber yarn layer 13, and the first metal film 14 is located between the first glass fiber mat 11 and the second glass fiber mat 12.

The first glass fiber mat 11, the second glass fiber mat 12 and the first glass fiber yarn layer 13 have good heat resistance, corrosion resistance and insulation, and have high mechanical strength, so that the radome 300 can have good chemical and mechanical properties.

Meanwhile, the densities of the first glass fiber mat 11, the second glass fiber mat 12 and the first glass fiber yarn layer 13 are low, so that the whole weight of the radome 300 is light, and the whole weight of the antenna is light.

In some examples, the first glass fiber mat 11, the second glass fiber mat 12, and the first glass fiber yarn layer 13 are bonded by a resin material (e.g., an unsaturated polyester resin).

The embodiment of the present disclosure is not limited to a specific arrangement position of the first metal film 14, and the following is exemplified:

in some examples, as shown in fig. 3, the first metal film 14 is located in the first glass fiber yarn layer 13, and then, after the first metal film 14 is placed inside the first glass fiber yarn layer 13 in the manufacturing process of the radome 300, the first glass fiber felt 11 and the second glass fiber felt 12 are attached to both sides of the first glass fiber yarn layer 13.

In some examples, as shown in fig. 4, the first metal film 14 is located between the first glass fiber mat 11 and the first glass fiber veil layer 13. Wherein the first glass fiber mat 11 is located on the inner side of the radome 300 and the second glass fiber mat 12 is located on the outer side of the radome 300.

In other examples, as shown in fig. 5, the first metal film 14 is located between the second glass fiber mat 12 and the first glass fiber veil layer 13.

The number of layers of the first metal film 14 is not limited in the embodiments of the present disclosure, and in some examples, the first metal film 14 is one layer.

In other examples, the first metal film 14 may be multiple layers, and the multiple layers of the first metal film 14 may be placed at different positions.

Wherein, the more the number of layers of the first metal film 14 is, the better the shielding effect against the backward radiation is.

The material of the first metal film 14 is not limited in the embodiments of the present disclosure, and in some examples, the first metal film 14 is an aluminum metal film (or referred to as an aluminum plastic film). Of course, in other examples, the first metal film 14 may be a metal film prepared from other metals.

The principle of shielding the first metal film 14 according to the embodiment of the present disclosure is not limited, and the first metal film 14 may be implemented by reflecting a signal emitted from the edge of the reflection plate 100 or absorbing a signal emitted from the edge of the reflection plate 100.

Next, the morphology of the first metal film 14 to which the different principles are applied is exemplarily described:

in some examples, the first metal film 14 is a complete metal film, and then the first metal film 14 shields the signal radiated back by the antenna element 200 mainly by reflection.

In other examples, as shown in fig. 6-8, the first metal film 14 includes a plurality of first metal film units 142, and when a signal propagates to the first metal film 14, the signal continuously oscillates (or is called diffracts) between the plurality of first metal film units 142, and during the oscillation, the energy of the signal gradually decreases, so that the absorption of the signal by the first metal film 14 is achieved.

In some examples, to support the plurality of first metal film units 142, as shown in fig. 6 to 8, the first metal film 14 further includes a first support layer 141, and the plurality of first metal film units 142 are attached to the first support layer 141.

The first supporting layer 141 may be a plastic film, and is a carrier of the plurality of first metal film units 142, and the first supporting layer 141 does not generate a shielding effect on the backward radiation.

By providing the first supporting layer 141, the plurality of first metal film units 142 are integrated into one film, so that the plurality of first metal film units 142 are conveniently placed between the first glass fiber mat 11 and the second glass fiber mat 12 at the same time.

The specific shape of the first metal film unit 142 is not limited in the embodiments of the present disclosure, and in some examples, as shown in fig. 6 to 8, the shape of the first metal film unit 142 may be square, hexagonal, or the like.

The embodiment of the present disclosure is not limited to a specific arrangement form of the plurality of first metal film units 142, and in some examples, the plurality of first metal film units 142 are periodically arranged as shown in fig. 6 and 7.

Of course, in other examples, as shown in fig. 8, the plurality of first metal film units 142 may also be arranged non-periodically.

Specifically, the form of the first metal film unit 142 and the arrangement form of the plurality of first metal film units 142 may be set according to the frequency of the required shielding signal, so that the shielding effect of the first metal film 14 on the signal with the frequency is optimal.

In some examples, as shown in fig. 9 and 10, a choke groove 140 is provided on the first metal film 14, and the energy is greatly attenuated after the signal passes through the choke groove 140, so that it cannot be transmitted to the rear of the shielding part 1.

As illustrated in fig. 9 and 10, the cross-sectional shape of choke groove 140 may be circular or rectangular, etc., and the embodiments of the present disclosure are not particularly limited thereto, and the cross-sectional shape and size of choke groove 140 may be set according to the frequency of the desired shielding signal.

Fig. 11 is a schematic diagram comparing the antenna provided with the radome 300 according to the embodiment of the present disclosure and the antenna pattern according to the related art, wherein the polar angle of any point in fig. 10 represents the radiation angle herein, and the polar diameter of any point represents the radiation amplitude herein.

As can be seen from fig. 11, the antenna to which the embodiment of the present disclosure is applied provides a radome 300 having significantly reduced backward radiation compared to that of the antenna in the related art. While applying the embodiment of the present disclosure provides the antenna of the radome 300 with forward radiation that is superior to that of the related art antenna, because the first metal film 14 may reflect a portion of the signal emitted from the edge of the reflection plate 100 back and become a forward radiated signal. Both aspects increase the front-to-back ratio of the antenna.

Unlike the shielding part 1, since the transmitting part 2 is located at the front side of the reflection plate 100, the transmitting part 2 should have good electromagnetic wave penetration characteristics in terms of electrical performance so that signals radiated from the antenna pass through the transmitting part 2 to cover the corresponding region.

Next, an implementation of the transmissive section 2 will be exemplarily described:

in some examples, as shown in fig. 12 and 13, the transmissive part 2 includes a third glass fiber mat 21, a fourth glass fiber mat 22, and a second glass fiber yarn layer 23, and the third glass fiber mat 21 and the fourth glass fiber mat 22 are respectively bonded to both sides of the second glass fiber yarn layer 23. In this way, the signal radiated forward by the antenna element 200 can smoothly penetrate the transmission part 2.

The third glass fiber mat 21 and the first glass fiber mat 11 may be connected into an integral structure and enclose a ring shape. The fourth glass fiber mat 22 and the second glass fiber mat 12 may be connected as a unitary structure and enclose a loop. The second glass fiber yarn layer 23 is connected with the first glass fiber yarn layer 13 into an integral structure, and is enclosed into a ring shape.

In addition, since the antenna element 200 radiates a signal having not only a frequency in an operating frequency band but also a signal in a non-operating frequency band, the signal in the non-operating frequency band is not a signal required for the antenna. In order to shield signals in the non-operating frequency band, in other examples, as shown in fig. 14 to 17, the transmission part 2 has a second metal film 24 therein, and the second metal film 24 is used to transmit signals in the operating frequency band and shield signals in the non-operating frequency band.

For example, if the main body of the radome 300 is made of glass fiber reinforced plastic, as shown in fig. 14 to 17, the transmitting part 2 includes a third glass fiber mat 21, a fourth glass fiber mat 22, a second glass fiber yarn layer 23, and a second metal film 24. The third glass fiber mat 21 and the fourth glass fiber mat 22 are respectively bonded to both sides of the second glass fiber yarn layer 23, and the second metal film 24 is located between the third glass fiber mat 21 and the fourth glass fiber mat 22. Wherein the third glass fiber mat 21 is located on the inner side of the radome 300, and the fourth glass fiber mat 22 is located on the outer side of the radome 300.

In some examples, the third glass fiber mat 21, the fourth glass fiber mat 22, and the second glass fiber yarn layer 23 are bonded by a resin material (e.g., an unsaturated polyester resin).

The embodiment of the present disclosure does not limit the specific arrangement position of the second metal film 24, and the following is an exemplary description:

in some examples, as shown in fig. 15, the second metal film 24 may be placed in the second glass fiber yarn layer 23, and then after the second metal film 24 is placed inside the second glass fiber yarn layer 23 in the manufacturing process of the radome 300, the third glass fiber mat 21 and the fourth glass fiber mat 22 are attached to both sides of the second glass fiber yarn layer 23.

In other examples, as shown in fig. 16, the second metal film 24 is located between the second fiberglass veil layer 23 and the third fiberglass mat 21.

In other examples, as shown in fig. 17, the second metal film 24 is located between the second fiberglass veil layer 23 and the fourth fiberglass mat 22.

The number of layers of the second metal film 24 is not limited in the embodiments of the present disclosure, and in some examples, the second metal film 24 is one layer.

In other examples, the second metal film 24 may be a plurality of layers, and the plurality of layers of the second metal film 24 are disposed at different positions, respectively. For example, when the second metal film 24 is three layers, the three layers of the second metal film 24 may be placed at different positions of the second glass fiber yarn layer 23, respectively.

The more the number of layers of the second metal film 24 is, the better the shielding effect on the signal in the non-operating frequency band is.

The material of the second metal film 24 is not limited in the embodiments of the present disclosure, and in some examples, the second metal film 24 is an aluminum metal film (or referred to as an aluminum plastic film). Of course, in other examples, the second metal film 24 may be a metal film prepared from other metals.

In some examples, as shown in fig. 18, the second metal film 24 includes a plurality of second metal film units 242, and when a signal in the non-operating frequency band propagates to the second metal film 24, the signal continuously oscillates (or is called diffracts) between the plurality of second metal film units 242, and during the oscillation process, the capability of the signal gradually decreases, so that the absorption of the signal in the non-operating frequency band by the second metal film 24 is achieved.

In some examples, to support the plurality of second metal film units 242, as shown in fig. 18, the second metal film 24 further includes a second support layer 241, and the plurality of second metal film units 242 are attached to the second support layer 241.

The second supporting layer 241 may be a plastic film, and is a carrier of the plurality of second metal film units 242, where the second supporting layer 241 does not generate a shielding effect on the forward radiation.

By providing the second support layer 241, the plurality of second metal film units 242 are integrated into one film, so that the plurality of second metal film units 242 are conveniently placed between the third glass fiber mat 21 and the fourth glass fiber mat 22 at the same time.

The embodiment of the present disclosure is not limited to the specific form of the second metal film unit 242, and in some examples, as shown in fig. 18, the shape of the first metal film unit 142 may be square. In other examples, the shape of the first metal film unit 142 may be circular, hexagonal, or the like.

The embodiment of the present disclosure is not limited to a specific arrangement form of the plurality of second metal film units 242, and in some examples, the second metal film units 242 are periodically arranged as shown in fig. 18. Of course, in other examples, the second metal film units 242 may also be arranged non-periodically.

For example, the form of the second metal film unit 242 and the arrangement form of the plurality of second metal film units 242 may be set according to the frequency of the required shielding signal, so that the shielding effect of the second metal film 24 on the signal in the non-operating frequency band is optimal.

It will be appreciated that the frequency band of the signal shielded by the transmitting part 2 is different from that of the signal shielded by the shielding part 1, the transmitting part 2 shields the signal in the non-operating frequency band, and the shielding part 1 shields the signal at least including the operating frequency band, so that the arrangement manner of the second metal film unit 242 is different from that of the first metal film unit 142 as shown in fig. 6 and 18.

The cross-sectional shape of the radome 300 is not particularly limited in the embodiments of the present disclosure, and as shown in fig. 19 and 20, the cross-sectional shape of the radome 300 may be elliptical, polygonal, irregular, or the like. In practical applications, the cross-sectional shape of the radome 300 may be set according to the structure and space inside the antenna.

In addition, the radome 300 further includes a lower end cover and an upper end cover (not shown in the drawings), which close openings at both ends of the radome 300, for closing the reflection plate 100 and the antenna element 200 inside the radome 300, so that the reflection plate 100 and the antenna element 200 are not easily damaged.

For the case where the third glass fiber mat 21 is connected to the first glass fiber mat 11 and the fourth glass fiber mat 22 is connected to the second glass fiber mat 12, the radome 300 provided by the embodiment of the present disclosure may be further expressed as follows:

the radome 300 includes a glass fiber yarn layer, two glass fiber mats, and a first metal film 14, and the two glass fiber mats are respectively attached to both sides of the glass fiber yarn layer. The first metal film 14 is located at the rear side of the reflection plate 100 and between two glass fiber mats. Wherein the glass fiber yarn layers are a first glass fiber yarn layer 13 and a second glass fiber yarn layer 23 which are connected, one of the two layers of glass fiber felts is a first glass fiber felt 11 and a third glass fiber felt 2 which are connected, and the other layer is a second glass fiber felt 12 and a fourth glass fiber felt 22 which are connected.

In the case where the radome 300 further includes the second metal film 24, the second metal film 24 is positioned at the front side of the reflection plate 100 and between two layers of glass fiber mats.

The embodiment of the present disclosure further provides an antenna, as shown in fig. 1, the antenna includes a reflection plate 100, an antenna element 200, and the radome 300. The antenna element 200 is fixed to the front side of the reflection plate 100. The radome 300 covers the reflection plate 100 and the antenna element 200, and the transmission part 2 of the radome 300 is located at the front side of the reflection plate 100, and the shielding part 1 of the radome 300 is located at the rear side of the reflection plate 100.

The embodiment of the disclosure also provides a base station, which comprises the antenna so as to realize the transmission and the reception of signals. The antenna may be referred to as a base station antenna.

The base station, which may also be referred to as an access network device, may be located in a base station subsystem (base btation bubsystem, BBS), a terrestrial radio access network (UMTS terrestrial radio access network, UTRAN), or an evolved terrestrial radio access network (evolved universal terrestrial radio access, E-UTRAN) for performing cell coverage of signals to enable communication between the terminal and the wireless network.

Illustratively, the base station may be a base transceiver station (base transceiver station, BTS) in a global system for mobile communications (global system for mobile comunication, GSM) or (code division multiple access, CDMA) system, a node B (NodeB, NB) in a wideband code division multiple access (wideband code division multiple access, WCDMA) system, an evolved node B (eNB or eNodeB) in a long term evolution (long term evolution, LTE) system, or a radio controller in a cloud radio access network (cloud radio access network, CRAN) scenario. Or the base station may be a relay station, an access point, a vehicle-mounted device, a wearable device, a g node (gnob or gNB) in a New Radio (NR) system, an access network device in a future evolution network, or the like, and the embodiments of the present disclosure are not limited.

The terminology used in the description of the embodiments of the disclosure is for the purpose of describing the embodiments of the disclosure only and is not intended to be limiting of the disclosure. Unless defined otherwise, technical or scientific terms used in the embodiments of the present disclosure should be given the ordinary meaning as understood by one of ordinary skill in the art to which the present disclosure belongs. The terms "first," "second," and the like in the description and in the claims, are not used for any order, quantity, or importance, but are used for distinguishing between different elements. Likewise, the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. The word "comprising" or "comprises", and the like, is intended to mean that elements or items that are present in front of "comprising" or "comprising" are included in the word "comprising" or "comprising", and equivalents thereof, without excluding other elements or items. "upper", "lower", "left", "right", etc. are used merely to indicate relative positional relationships, and when the absolute position of the object to be described is changed, the relative positional relationships may be changed accordingly. "plurality" means two or more, unless expressly defined otherwise.

The foregoing description of the preferred embodiments of the present disclosure is provided for the purpose of illustration only, and is not intended to limit the disclosure to the particular embodiments disclosed, but on the contrary, the intention is to cover all modifications, equivalents, alternatives, and alternatives falling within the spirit and scope of the disclosure.

Claims (14)

1. A radome, characterized in that the radome is used for covering a reflecting plate (100) and an antenna element (200) of an antenna, and comprises a shielding part (1) and a transmitting part (2);

the shielding part (1) is positioned at the rear side of the reflecting plate (100), a first metal film (14) is arranged in the shielding part (1), and the first metal film (14) is used for shielding the backward radiation of the antenna oscillator (200), wherein the rear side is the side of the reflecting plate (100) facing away from the antenna oscillator (200);

the transmissive section (2) is located on the front side of the reflective plate (100).

2. Radome of claim 1, wherein the width of the shielding portion (1) is larger than the width of the reflecting plate (100).

3. The radome of claim 1, wherein the shielding (1) comprises a first glass fiber mat (11), a second glass fiber mat (12), a first glass fiber yarn layer (13) and the first metal film (14);

the first glass fiber felt (11) and the second glass fiber felt (12) are respectively attached to two sides of the first glass fiber yarn layer (13);

the first metal film (14) is located between the first glass fiber mat (11) and the second glass fiber mat (12).

4. A radome according to claim 3, wherein said first metal film (14) is located in said first glass fiber yarn layer (13).

5. A radome according to any one of claims 2-4, wherein the first metal film (14) is an aluminium metal film.

6. The radome of any one of claims 2-4, wherein the first metal film (14) comprises a first support layer (141) and a plurality of first metal film units (142);

the plurality of first metal film units (142) are attached to the first support layer (141).

7. The radome of claim 6, wherein the plurality of first metal film units (142) are arranged periodically.

8. Radome of any one of claims 2-4, wherein the first metal film (14) is provided with a choke groove (140).

9. The radome of any one of claims 2 to 4, wherein the transmission part (2) has a second metal film (24) therein, and the second metal film (24) is used for transmitting signals of an operating frequency band of the antenna element (200) and shielding signals of a non-operating frequency band.

10. The radome of claim 9, wherein the transmissive portion (2) comprises a third glass fiber mat (21), a fourth glass fiber mat (22), a second glass fiber yarn layer (23) and the second metal film (24);

the third glass fiber felt (21) and the fourth glass fiber felt (22) are respectively attached to two sides of the second glass fiber yarn layer (23);

the second metal film (24) is located between the third glass fiber mat (21) and the fourth glass fiber mat (22).

11. Radome of claim 10, wherein the second metal film (24) is located in the second glass fiber yarn layer (23).

12. The radome of claim 9, wherein the second metal film (24) comprises a second support layer (241) and a plurality of second metal film units (242);

the plurality of second metal film units (242) are attached to the second support layer (241).

13. An antenna, characterized in that the antenna comprises a reflector plate (100), an antenna element (200) and a radome (300) according to any one of claims 1-12;

the antenna element (200) is fixed on the front side of the reflecting plate (100);

the antenna housing (300) covers the reflecting plate (100) and the antenna element (200), the transmission part (2) of the antenna housing (300) is positioned at the front side of the reflecting plate (100), and the shielding part (1) of the antenna housing (300) is positioned at the rear side of the reflecting plate (100).

14. A base station comprising the antenna of claim 13.