Protective device, protective component and antenna for protecting frequency selective surface

Abstract

The present disclosure relates to a protective device, a protective assembly and an antenna for protecting a frequency selective surface, wherein the protective device for protecting a frequency selective surface comprises: a support portion located at at least one end of the protective device, the support portion being configured to be fixed to a bracket via a mechanical connection; and a bridge member extending between two ends of the protective device, wherein a connecting member for connecting a middle portion of the frequency selective surface is provided in the middle portion of the bridge member to connect the middle portion of the frequency selective surface to the middle portion of the bridge member. In the technical solution according to the present disclosure, since the middle portion of the frequency selective surface can be connected to the middle portion of the bridge member, the structural strength of the frequency selective surface becomes greater, thereby being able to achieve the purpose of protecting the frequency selective surface.

Description

Technical Field

[0001] The present disclosure relates to the field of communications, and more particularly to a protection device for protecting a frequency selective surface, a protection component having the protection device, and an antenna having the protection device or the protection component. Background Art

[0002] In recent years, with the development of information and communication technologies such as mobile Internet and the Internet of Things, data traffic has continued to grow explosively. The number of 5G base stations is increasing rapidly, and the problem of tight site resources is becoming increasingly apparent.

[0003] In order to quickly deploy 5G communication equipment, 5G sites are mainly implemented by adding 5G antennas and equipment to the original 4G site resources, so multi-frequency base station antennas have become the mainstream. Among them, active and passive integrated base station antennas that integrate 4G and 5G have more advantages in space size, wind load, and management. They are widely accepted and applied in the deployment of 5G base stations and are an important direction for the evolution of base station antennas in the future.

[0004] Figure 1 The connection diagram of the active and passive integrated base station antenna 100 is shown, with the traditional passive antenna on the upper side and the active antenna on the lower side, and the two antennas are stacked together. The most critical technology in the integrated deployment of the base station antenna that integrates the active antenna and the passive antenna is the application of the frequency selective surface 110. Patent CN 112599974A discloses a frequency selective surface. The frequency selective surface will have a wave-transmitting characteristic for high-frequency signals emitted by the antenna vibrator 130 such as 5G, forming an open circuit for high-frequency signals, and forming a ground structure for low-frequency signals emitted by the low-frequency radiation unit 120 of the traditional antenna, prohibiting the penetration of low-frequency signals. Based on the application of this technology, the integrated fusion of active antennas and passive antennas in the form of front-to-back stacking can be completed.

[0005] Unlike conventional antennas, which basically use aluminum alloy plates with certain strength and rigidity as the reflective surface and mounting surface of the vibrator, the frequency selective surface is made of materials such as resin and plastic and is thin overall, so it usually does not have high rigidity, and therefore has high overall brittleness. Especially when the antenna vibrates, the frequency selective surface is very prone to fracture and damage. In addition, a vibrator is usually required to be set on the frequency selective surface, but since the frequency selective surface itself has weak rigidity, it is usually not easy to place the vibrator. Summary of the invention

[0006] In order to solve the technical problems existing in the prior art, the frequency selective surface is made of materials such as resin and plastic and has a relatively thin overall thickness, so it usually does not have high rigidity, and thus has high overall brittleness. Especially when the antenna vibrates, the frequency selective surface is very prone to breakage.

[0007] In order to achieve the above technical effects, the first aspect of the present disclosure provides a protection device for protecting a frequency selective surface, the protection device comprising:

[0008] a support portion at at least one end of the protective device, the support portion being configured to be secured to a bracket via a mechanical connection; and

[0009] A bridge member extends between the two ends of the protection device, wherein a connecting member for connecting the middle part of the frequency selective surface is provided in the middle of the bridge member to connect the middle part of the frequency selective surface to the middle part of the bridge member.

[0010] In the technical solution according to the contents of the present disclosure, since the middle part of the frequency selective surface can be connected to the middle part of the bridge member, the structural strength of the frequency selective surface becomes greater, thereby being able to protect the frequency selective surface. Here, the middle part of the frequency selective surface does not necessarily have to be located in the middle of the frequency selective surface, and correspondingly, the middle part of the bridge member does not necessarily have to be located in the middle of the bridge member. Those skilled in the art should understand that the middle part or middle part here is only a range, and can even be said to be the rest of the part except the end. In the technical solution according to the contents of the present disclosure, as long as the middle part of the frequency selective surface can be connected to the middle part of the bridge member via the connecting action of the connecting member, it can increase the overall rigidity of the frequency selective surface.

[0011] Preferably, in an embodiment according to the present disclosure, the connecting member is configured on a mounting portion extending from the protection device toward the frequency selective surface.

[0012] Preferably, in one embodiment according to the present disclosure, the support portion is further configured as a support end surface, and the support end surface presses the frequency selective surface onto the bracket via the mechanical connection. In this way, the frequency selective surface can be pressed onto the bracket, thereby firmly fixing the frequency selective surface to the bracket.

[0013] More preferably, in an embodiment according to the present disclosure, the protection device has two supporting end surfaces located at both ends of the protected device.

[0014] Further preferably, in an embodiment according to the present disclosure, the protection device further comprises:

[0015] A vibrator supporting portion is constructed between the supporting portion and the connecting member and is configured to support the vibrator on a side of the protective device away from the frequency selective surface. In this way, the vibrator can be well supported, so that on the one hand, the vibrator can be well supported, and on the other hand, the adverse effect of the weight of the vibrator on the frequency selective surface can be reduced.

[0016] In one embodiment according to the present disclosure, the vibrator support portion further comprises a buckle, which is configured to mechanically connect the vibrator to be mounted on the frequency selective surface to the protection device. In this way, the vibrator can be well fixed to the protection device disclosed according to the present disclosure.

[0017] In one embodiment according to the present disclosure, the protection device further includes a receiving cavity, and the receiving cavity is configured to allow a feeding element for feeding the vibrator to pass therethrough.

[0018] Preferably, in one embodiment according to the present disclosure, a feeding board protection seat is provided at the end of the accommodating cavity close to the frequency selective surface, and the feeding board protection seat is constructed to accommodate the feeding board of the vibrator and is mechanically connected to the frequency selective surface.

[0019] Preferably, in an embodiment according to the present disclosure, a fixing member is provided on a side of the bridge member away from the frequency selective surface, and the fixing member is configured to fix the parasitic unit.

[0020] Further preferably, in an embodiment according to the present disclosure, the fixing member comprises a slot for snapping the parasitic unit or the isolation needle.

[0021] Optionally or alternatively, in one embodiment according to the present disclosure, the fixing member includes a latching arm, the latching arm includes a base protruding outward from the bridge member and a latching portion located on a side of the base away from the bridge member, and wherein, when the latching arm latches the parasitic unit or the isolation needle, the parasitic unit or the isolation needle is located between the latching portion and the bridge member.

[0022] In addition, the second aspect of the present disclosure provides a protection assembly for protecting a frequency selective surface, the protection assembly comprising at least two protection devices according to the first aspect of the present disclosure, wherein the at least two protection devices are fixedly connected by a crossbeam. Preferably, in an embodiment according to the present disclosure, the protection device and the crossbeam are integrally formed.

[0023] Furthermore, the third aspect of the present disclosure proposes an antenna, comprising: a bracket; a frequency selective surface; a protective device according to the first aspect of the present disclosure or a protective component according to the second aspect of the present disclosure, wherein the protective device or the protective component is constructed to be mechanically connected to the frequency selective surface at a middle part thereof; and a first radiating element located on a first side of the frequency selective surface and a second radiating element located on a second side of the frequency selective surface opposite to the first side.

[0024] Preferably, in an embodiment according to the present disclosure, the protection device or protection component is further configured to press the frequency selective surface onto the bracket.

[0025] Preferably, in one embodiment according to the present disclosure, the antenna further comprises a support beam, which is disposed on a side of the frequency selective surface away from the protection device or the protection component and is configured to support the frequency selective surface.

[0026] In summary, in the technical solution according to the present disclosure, since the middle portion of the frequency selective surface can be connected to the middle portion of the bridge member, the structural strength of the frequency selective surface becomes greater, thereby achieving the purpose of protecting the frequency selective surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The features, advantages and other aspects of the embodiments of the present disclosure will become more apparent with reference to the following detailed description in conjunction with the accompanying drawings, in which several embodiments of the present disclosure are shown in an exemplary and non-limiting manner. In the accompanying drawings:

[0028] Figure 1 A connection diagram of an active and passive integrated base station antenna 100 is shown;

[0029] Figure 2A A schematic structural diagram of a protection device 200 for protecting a frequency selective surface according to an embodiment of the present disclosure is shown;

[0030] Figure 2B Shows Figure 2A The schematic diagram of the assembly of the protection device 200 for protecting the frequency selective surface of the embodiment shown, the frequency selective surface and the bracket are installed together;

[0031] Figure 3A A schematic diagram of assembling a protection device 300 for protecting a frequency selective surface and a vibrator according to another embodiment of the present disclosure is shown;

[0032] Figure 3B Shows Figure 3AA partial enlarged view of the receiving cavity in FIG.

[0033] Figure 4 A schematic structural diagram of a protection device 400 for protecting a frequency selective surface according to another embodiment of the present disclosure is shown;

[0034] Figure 5 A schematic diagram showing a support beam 555 according to yet another embodiment of the present disclosure; and

[0035] Figure 6 FIG. 6 is a schematic structural diagram of a protection device 600 for protecting a frequency selective surface according to yet another embodiment of the present disclosure. DETAILED DESCRIPTION

[0036] The various exemplary embodiments of the present disclosure are described in detail below with reference to the accompanying drawings. Although the exemplary methods and devices described below include software and / or firmware executed on hardware among other components, it should be noted that these examples are merely illustrative and should not be considered restrictive. For example, it is considered that any or all hardware, software, and firmware components can be implemented exclusively in hardware, exclusively in software, or in any combination of hardware and software. Therefore, although exemplary methods and devices have been described below, it should be readily understood by those skilled in the art that the examples provided are not intended to limit the manner in which these methods and devices are implemented.

[0037] In addition, the flowcharts and block diagrams in the accompanying drawings illustrate the possible architectures, functions and operations of the methods and systems according to various embodiments of the present disclosure. It should be noted that the functions marked in the boxes may also occur in an order different from that marked in the accompanying drawings. For example, two boxes represented in succession may actually be executed substantially in parallel, or they may sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the flowchart and / or block diagram, and the combination of boxes in the flowchart and / or block diagram, may be implemented using a dedicated hardware-based system that performs a specified function or operation, or may be implemented using a combination of dedicated hardware and computer instructions.

[0038] As mentioned above, the prior art has the following technical problems, namely, the traditional problems in the background technology. The main problems to be solved by the present disclosure are as follows, namely, the frequency selective surface has the technical problem of insufficient rigidity during application. When the antenna vibrates, the frequency selective surface is very likely to break and be damaged.

[0039] In response to this technical problem, the inventor of the present disclosure innovatively conceived of providing a protective device for the frequency selection device. In the protective device, since the middle part of the frequency selection surface can be connected to the middle part of the bridge component, the structural strength of the frequency selection surface becomes greater, thereby being able to protect the frequency selection surface, so that the frequency selection surface will not easily fail even when it is in a vibrating state.

[0040] The following is combined with Figure 2A To Attachment Figure 6 To describe the specific structure of the protection device proposed according to the contents of the present disclosure, but those skilled in the art should understand that the specific embodiments here are merely illustrative and not restrictive, and any technical solution that falls within the scope of protection outlined in the claims is the content claimed for protection by the contents of the present disclosure.

[0041] Specifically, the present disclosure proposes a protection device for protecting a frequency selective surface. Figure 2A and Figure 2B The protection device 200 disclosed according to the present disclosure is described. Figure 2A FIG. 2 shows a schematic structural diagram of a protection device 200 for protecting a frequency selective surface according to an embodiment of the present disclosure. Figure 2B Shows Figure 2A The illustrated embodiment is a schematic assembly diagram of a protection device 200 for protecting a frequency selective surface, a frequency selective surface, and a bracket installed together.

[0042] from Figure 2A and Figure 2B It can be seen that the protection device 200 for protecting the frequency selective surface 270 according to one embodiment of the present disclosure includes at least one end (eg Figure 2A The support portion 210 is configured to be fixed to a bracket (eg, Figure 2B In addition, the protection device 200 for protecting the frequency selective surface 270 according to an embodiment of the present disclosure further includes a bridge member extending between two ends (e.g., left and right ends) of the protection device 200, wherein a connecting member 220 for connecting the middle part of the frequency selective surface 270 is provided in the middle of the bridge member to connect the frequency selective surface (e.g., Figure 2BIn the technical solution according to the present disclosure, since the middle part of the frequency selective surface 270 can be connected to the middle part of the bridge member, the structural strength and rigidity of the frequency selective surface 270 are increased, thereby achieving the purpose of protecting the frequency selective surface 270.

[0043] Here, the middle part of the frequency selective surface 270 does not necessarily need to be located in the middle of the frequency selective surface 270, and accordingly, the middle part of the bridge member does not necessarily need to be located in the middle of the bridge member. Those skilled in the art should understand that the middle part or the middle part here is only a range, and can even be said to be the rest of the part except the ends (e.g., the ends on the left and right sides). In the technical solution according to the content of the present disclosure, as long as the middle part of the frequency selective surface 270 can be connected to the middle part of the bridge member via the connection of the connecting member 220, the overall rigidity of the frequency selective surface 270 can be increased.

[0044] Preferably, in order to enable the frequency selective surface 270 to be smoothly connected to Figure 2A The bridge member shown in the present disclosure Figure 2B In the illustrated embodiment, the connecting member 220 is constructed on a mounting portion 221 extending from the protective device toward the frequency selective surface 270. That is, the mounting portion 221 is, for example, a mounting leg, and the connecting member 220 is, for example, an end portion with a screw hole, through which the frequency selective surface 270 can be connected to the bridge member, for example, by means of screws or rivets, thereby increasing the structural strength of the frequency selective surface 270. Of course, those skilled in the art should understand that the frequency selective surface can also be bonded to the above-mentioned connecting member 220, for example, by means of colloid.

[0045] In addition, preferably, in an embodiment according to the present disclosure (for example Figure 2A and Figure 2B In the embodiment shown in the figure), the support portion 210 is also configured as a support end surface, that is, for example, it has a flat area, and the support end surface presses the frequency selection surface 270 onto the bracket 280 via the mechanical connection. In this way, the frequency selection surface 270 can be pressed onto the bracket 280, so that the frequency selection surface 270 can be firmly fixed to the bracket 280. More preferably, in an embodiment according to the present disclosure (for example Figure 2A and Figure 2BIn the embodiment shown in the figure, the protection device 200 has two supporting parts 210 and 210' (i.e., supporting end surfaces) located at both ends of the protected device 200, so that the frequency selective surface 270 is firmly pressed onto the bracket 280 at both ends. In this way, the frequency selective surface 270 can be pressed onto the bracket 280 more firmly, so that the frequency selective surface 270 can be more firmly fixed to the bracket 280, further enhancing the rigidity of the frequency selective surface 270, thereby improving the anti-interference performance of the frequency selective surface 270.

[0046] In addition, as in Figure 2A and Figure 2B As further shown in Figure 2A and Figure 2B In the illustrated embodiment, the protection device 200 further includes a vibrator supporting portion 230, which is configured between the supporting portion 210' and the connecting member 220 and is configured to support the vibrator on a side of the protection device 200 away from the frequency selective surface 270. Figure 2A and Figure 2B In the example shown, a vibrator supporting portion is also constructed between the supporting portion 210 and the connecting member 220, and the vibrator supporting portion is also configured to support the vibrator on a side of the protection device 200 away from the frequency selection surface 270, so that Figure 2A and Figure 2B The exemplary protection device 200 shown can support two vibrators at the same time. Figure 2A and Figure 2B Not shown, will be combined later Figure 3A and Figure 3B The vibrator can be supported by the vibrator support part 230, so as to provide good support for the vibrator on the one hand, and reduce the adverse effect of the weight of the vibrator on the frequency selective surface 270 on the other hand. In other words, the vibrator can be supported by the vibrator support part 230 instead of only by the frequency selective surface 270, thereby freeing the frequency selective surface 270 from the task of supporting the vibrator and further improving the anti-interference performance of the frequency selective surface 270. Figure 2A and Figure 2B In the embodiment shown in the figure, the protection device 200 includes two vibrator support parts 230. Those skilled in the art should understand that other numbers of vibrator support parts are also feasible. In addition, the height of the vibrator support part 230 does not necessarily correspond to the height of the vibrator, and can also be slightly lower than the height of the vibrator.

[0047] In the case where the height of the vibrator is close to the height of the vibrator support part, in one embodiment according to the present disclosure, the vibrator support part 230 can also include a buckle 232, and the buckle 232 is constructed to mechanically connect the vibrator to be mounted on the frequency selection surface 270 to the protective device 200. In this way, the vibrator can be well fixed to the protective device 200 disclosed according to the present disclosure. Specifically, a vibrator such as a low-frequency radiation unit can be fixed to the protective device 200 for the antenna by, for example, the buckles 232 located at the four corners of the vibrator support part 230. There are four buckles 232 distributed circumferentially to ensure the reliability of the connection. Of course, those skilled in the art should understand that it is also feasible to provide two or more buckles 232. The circumferentially distributed buckles 232 can not only fix the vibrator with a square radiation surface, but also fix the vibrator in a cross form. In Figure 2B In the embodiment shown, the protective device 200 for the antenna adopts the form of a "bridge-type" support structure, and its two ends for support are respectively connected to the metal brackets 280 on both sides, and the fixing method can adopt a detachable structural connection form such as screws, rivets, or hooks, or other fixed connection methods. Those skilled in the art should understand that in order to fix the vibrator to the vibrator support part 230, the buckle is only one form, and other forms of fixing structures are also feasible, such as a fixing hole on the vibrator, and the vibrator support part 230 has corresponding support bosses or support fixing plates.

[0048] At the same time, it is further preferred that in one embodiment according to the present disclosure, the protection device 200 also includes a housing cavity 240, and the housing cavity 240 is configured to allow a feeder for feeding the vibrator to be inserted therein. More preferably, in one embodiment according to the present disclosure, a feed board protection seat 250 is provided at the end of the housing cavity 240 close to the frequency selection surface 270, and the feed board protection seat 250 is configured to accommodate the feed board of the vibrator and is mechanically connected to the frequency selection surface 270. Specifically, the protection device 200 for the antenna is provided with a housing cavity 240 for installing a feeder for feeding a vibrator such as a low-frequency radiation unit, which can be a housing cavity that completely covers the feeder from top to bottom, or a groove-shaped housing cavity that is only used to guide and position the feeder. As mentioned above, the protective device 200 for the antenna is also provided with a feed board protection seat 250, in which the feed board of the low-frequency radiation unit can be accommodated. The feed board protection seat 250 and the frequency selection surface 270 can also be connected by rivets 251, for example. This structure not only protects the vibrator pad, but also strengthens the local connection rigidity of the frequency selection surface 270. By adjusting the characteristics of the radiation unit installed by the protective device 200 for the antenna, the protective device 200 for the antenna can be compatible with radiation units of different forms and types.

[0049] In addition, in order to optimize the radio frequency performance, required parts such as isolation pins, parasitic units, etc. may also be installed. Figure 2A and Figure 2B In the illustrated embodiment, a fixing member 260 is provided on the side of the bridge member away from the frequency selection surface 270, and the fixing member 260 is configured to fix a parasitic unit or an isolation needle. At this time, parts required to optimize the radio frequency performance, such as isolation needles, parasitic units, etc., can be placed between two oscillators such as low-frequency radiation units. Optionally, the fixing member 260 includes a card slot, and the card slot is used to clamp the parts. Specifically, the fixing member includes a holding arm, and the holding arm includes a base protruding outward from the bridge member and a holding portion located on a side of the base away from the bridge member, and wherein, when the holding arm holds the part, the part is located between the holding portion and the bridge member.

[0050] Here, Figure 2A and Figure 2BThe connection relationship between the protection device 200 according to the content of the present disclosure and various components such as the vibrator, the frequency selection surface and the bracket is specifically demonstrated. The rivets fix the protection device 200 to the brackets 280 on both sides of the antenna through the rivet holes, and at the same time, the protection device 200 for the antenna is crimped on the frequency selection surface 270, so as to strengthen the constraint rigidity on both sides of the frequency selection surface 270. At the same time, a connecting member 220 such as a mounting leg is arranged in the middle of the protection device 200 for the antenna. The connecting member 220 is connected to the frequency selection surface 270 by rivets, which can effectively reduce the shaking degree of freedom in the middle of the frequency selection surface 270. Thus, a "bridge-type" connection structure is formed, which can effectively improve the rigidity of the frequency selection surface 270. At the same time, a fixing device for a high-frequency vibrator radiation unit can also be placed under the vibrator such as the low-frequency radiation unit, which is, for example, connected to the fixed accommodating cavity 240 of the feeder for the low-frequency radiation unit, and its structural form is similar to that of the low-frequency radiation unit fixing device.

[0051] Figure 3A FIG. 2 shows a schematic diagram of assembling a protection device 300 for protecting a frequency selective surface and a vibrator according to another embodiment of the present disclosure. Figure 3A In the illustrated embodiment, the two vibrators 332 and 332' are connected to the protective device 300, for example, by means of a vibrator support portion, and are supported by means of the protective device 300, thereby freeing the frequency selective surface 370 from the task of supporting the vibrator, thereby improving the anti-interference performance of the frequency selective surface 370. In addition, the vibrator 332 can be fixed, for example, by means of a structure located on its surface 333, such as an opening and a buckle structure. Furthermore, a parasitic unit 362 required for optimizing the radio frequency performance is installed between the two vibrators 332 and 332', and the fixation of the parasitic unit 362 can also be achieved, for example, by a buckle connection. Furthermore, in order to further illustrate the shape of the accommodating cavity, Figure 3B Shows Figure 3A A partial enlarged view of the receiving cavity in the Figure 3B It can be seen that the accommodating cavity can be formed, for example, by means of mutually intersecting accommodating sub-cavities 341 and 342, each of which can accommodate a feeding component, respectively, and the two feeding components are intersected with each other to form mutually intersecting feeding components, so as to feed the vibrator, such as crossed PCB boards, and further, a feeding board protection seat 350 can be provided on the upper part of the frequency selection surface 370, which can be fixed to the frequency selection surface 370 by means of a fixing component 343, for example.

[0052] Figure 4 FIG. 4 is a schematic diagram showing a protection device 400 for protecting a frequency selective surface according to another embodiment of the present disclosure. Figure 2A and Figure 2B The protection device 200 for protecting the frequency selective surface shown is basically the same in terms of installation and connection. However, compared with Figure 2A and Figure 2B The embodiment shown is easier to process. Figure 4 It can be seen that the protection device 400 for protecting the frequency selective surface according to an embodiment of the present disclosure includes a protective device located at at least one end (eg Figure 4 The support portion 410 is configured to be fixed to a bracket (eg, Figure 4 In addition, the protection device 400 for protecting the frequency selective surface according to an embodiment of the present disclosure further includes a bridge member extending between two ends (e.g., left and right ends) of the protection device 400, wherein a connecting member 420 for connecting the middle part of the frequency selective surface 470 is provided in the middle of the bridge member to connect the frequency selective surface (e.g., Figure 4 The middle part of the frequency selective surface 470) is connected to the middle part of the bridge member. In the technical solution according to the content of the present disclosure, since the middle part of the frequency selective surface 470 can be connected to the middle part of the bridge member, the structural strength of the frequency selective surface 470 becomes larger, so that the purpose of protecting the frequency selective surface 470 can be achieved. Here, the middle part of the frequency selective surface 470 does not have to be located in the middle of the frequency selective surface 470, and accordingly, the middle part of the bridge member does not have to be located in the middle of the bridge member. Those skilled in the art should understand that the middle part or middle part here is only a range, and can even be said to be the rest of the part except the end parts (such as the ends on the left and right sides). In the technical solution according to the content of the present disclosure, as long as the middle part of the frequency selective surface 470 can be connected to the middle part of the bridge member via the connecting action of the connecting member 420, it can increase the overall rigidity of the frequency selective surface 470.

[0053] In addition, the protection device 400 further includes a vibrator support portion 430 for vibrator installation, which is constructed between the support portion 410' and the connecting member 420 and is configured to support the vibrator on a side of the protection device 400 away from the frequency selection surface 470. Figure 2A and Figure 2B The embodiment shown differs in that Figure 4 The vibrator support portion 430 for vibrator installation included in the protection device 400 for protecting the frequency selective surface shown in the figure does not necessarily have to be a closed quadrilateral structure, for example Figure 4 As shown, only three sides are provided, which also enables good support of the vibrator.

[0054] exist Figure 4 In the embodiment shown in the figure, the protection device 400 includes two vibrator support parts 430. Those skilled in the art should understand that other numbers of vibrator support parts 430 are also feasible. In addition, the height of the vibrator support part 430 does not necessarily correspond to the height of the vibrator, and can also be slightly lower than the height of the vibrator.

[0055] In addition, the aforementioned protection device and bracket for protecting the frequency selective surface are respectively located on both sides of the frequency selective surface, but in other embodiments, the protection device and bracket for protecting the frequency selective surface can also be arranged on the same side of the frequency selective surface. Furthermore, for example, a support beam 555 can be arranged on its lower side, and the support beam 555 is arranged on the side of the frequency selective surface 370 away from the vibrator 332 (for example, on the lower surface of the frequency selective surface 370 in FIG. 3) and is configured to support the frequency selective surface 370. Figure 5 FIG. 5 is a schematic diagram of a support beam 555 according to another embodiment of the present disclosure. Figure 5 As shown, in order to improve the rigidity of the frequency selective surface 370, a support beam 555 can be arranged below it, and its two ends are connected to the brackets 380 on both sides of the antenna by rivets. A plurality of support beams 555 are placed in the vertical direction of the antenna to strengthen the rigidity of the frequency selective surface 370. As shown in FIG3 and Figure 5 As shown, the frequency selection surface 370 and the support beam 555 are connected and fixed to the frequency selection surface 370 through rivet holes 5551. The support beam 555 is also provided with a mounting interface 5552 connected to a radiation unit such as a vibrator. A structure for supporting the vibrator or the antenna cover can be installed above the support beam 555 to support the antenna cover and protect the vibrator. This requirement depends on actual needs. The protective device disclosed in the present disclosure has a compact structure, strong versatility, strong applicability, and can save mold costs, and has certain economic value.

[0056] In addition, the present disclosure also proposes a protection assembly for protecting a frequency selective surface, the protection assembly comprising at least two protection devices according to the above, wherein the at least two protection devices are fixedly connected by a crossbeam. Preferably, in an embodiment according to the present disclosure, the protection device and the crossbeam are integrally formed. Figure 6FIG. 6 is a schematic diagram of a protective device 600 for protecting a frequency selective surface according to another embodiment of the present disclosure. The previous embodiment is to install multiple single protective devices 200 for antennas to strengthen the rigidity of the frequency selective surface 270 and install a vibrator such as a radiating unit, while this embodiment is to fuse multiple single protective devices 200 for antennas into a large single protective device 600 for antennas. The figure shows that three groups are fused, from Figure 6 It can be seen that the three sets of protection devices are fixedly connected by the crossbeam 690. Such a combination can be installed from the front of the frequency selection surface, which is not a limitation of this disclosure.

[0057] Furthermore, the third aspect of the present disclosure proposes an antenna, comprising: a bracket; a frequency selective surface; the protective device according to the first aspect of the present disclosure or the protective component according to the second aspect of the present disclosure, wherein the protective device or the protective component is constructed to be mechanically connected to the frequency selective surface at its middle part; and a first radiating element located on a first side of the frequency selective surface and a second radiating element located on a second side of the frequency selective surface opposite to the first side. Preferably, in one embodiment according to the present disclosure, the protective device or the protective component is also constructed to press the frequency selective surface onto the bracket. Preferably, in one embodiment according to the present disclosure, the antenna also includes a support beam, which is arranged on a side of the frequency selective surface away from the protective device or the protective component and is constructed to support the frequency selective surface.

[0058] In summary, the inventors of the present disclosure innovatively conceived of providing a protective device for the frequency selection device, in which, since the middle portion of the frequency selection surface can be connected to the middle portion of the bridge member, the structural strength and rigidity of the frequency selection surface are increased, thereby being able to protect the frequency selection surface, so that the frequency selection surface will not malfunction even when working outdoors for a long time and even when in a vibrating state.

[0059] The above is only an optional embodiment of the embodiment of the present disclosure, and is not intended to limit the embodiment of the present disclosure. For those skilled in the art, the embodiment of the present disclosure may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the embodiment of the present disclosure shall be included in the protection scope of the embodiment of the present disclosure.

[0060] Although the embodiments of the present disclosure have been described with reference to several specific embodiments, it should be understood that the embodiments of the present disclosure are not limited to the specific embodiments disclosed. The embodiments of the present disclosure are intended to cover various modifications and equivalent arrangements included in the spirit and scope of the appended claims. The scope of the claims is consistent with the broadest interpretation, thereby including all such modifications and equivalent structures and functions.

Claims

1. A protection device for protecting a frequency selective surface, characterized in that: The protection device comprises: a support portion at at least one end of the protective device, the support portion being configured to be secured to a bracket via a mechanical connection; and A bridge member extends between the two ends of the protection device, wherein a connecting member for connecting the middle part of the frequency selective surface is provided in the middle of the bridge member to connect the middle part of the frequency selective surface to the middle part of the bridge member.

2. The protection device according to claim 1, characterized in that: The connecting member is configured on a mounting portion extending from the protection device toward the frequency selective surface.

3. The protection device according to claim 1, characterized in that: The support portion is further configured to support an end surface, and the support end surface presses the frequency selective surface onto the bracket via the mechanical connection.

4. The protection device according to claim 3, characterized in that: The protection device has two supporting end surfaces located at both ends of the protected device.

5. The protection device according to claim 1, characterized in that: The protection device also includes: A vibrator supporting portion is constructed between the supporting portion and the connecting member and is configured to support the vibrator on a side of the protection device away from the frequency selective surface.

6. The protection device according to claim 5, characterized in that: The vibrator support portion further includes a buckle configured to mechanically connect the vibrator to be mounted to the frequency selective surface to the protection device.

7. The protection device according to claim 5, characterized in that: The protection device further comprises a receiving cavity, wherein the receiving cavity is configured to allow a feeding element for feeding the vibrator to pass therethrough.

8. The protection device according to claim 7, characterized in that: A feeding board protection seat is provided at the end of the accommodating cavity close to the frequency selective surface. The feeding board protection seat is configured to accommodate the feeding board of the vibrator and is mechanically connected to the frequency selective surface.

9. The protection device according to claim 1, characterized in that: A fixing member is provided on a side of the bridge member away from the frequency selective surface, and the fixing member is configured to fix the parasitic unit or the isolation needle.

10. The protection device according to claim 9, characterized in that: The fixing component comprises a card slot, and the card slot is used for carding the parasitic unit or the isolation needle.

11. The protection device according to claim 9, characterized in that: The fixing member includes a latching arm, which includes a base protruding outward from the bridge member and a latching portion located on a side of the base away from the bridge member, and wherein, when the latching arm latches the parasitic unit or the isolation needle, the parasitic unit or the isolation needle is located between the latching portion and the bridge member.

12. A protection component for protecting a frequency selective surface, characterized in that: The protection assembly comprises at least two protection devices according to any one of claims 1 to 11, wherein the at least two protection devices are fixedly connected via a crossbeam.

13. The protection assembly according to claim 12, characterized in that: The protection device and the crossbeam are integrally formed.

14. An antenna, characterized in that: The antenna comprises: Bracket; Frequency selective surfaces; The protective device according to any one of claims 1 to 11 or the protective assembly according to claim 12 or 13, wherein the protective device or the protective assembly is configured to be mechanically connected to the frequency selective surface at its middle part; and A first radiating element is located on a first side of the frequency selective surface and a second radiating element is located on a second side of the frequency selective surface opposite the first side.

15. The antenna according to claim 14, characterized in that The protective device or protective assembly is further configured to press the frequency selective surface onto the support.

16. The antenna according to claim 14, characterized in that The antenna further includes a support beam, which is disposed on a side of the frequency selective surface away from the protection device or the protection component and is configured to support the frequency selective surface.

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