Protection device for protecting frequency selective surface and antenna

Abstract

The present disclosure relates to a protection device for protecting a frequency selective surface and an antenna wherein the protection device for protecting a frequency selective surface comprises: two longitudinal frames; and the transverse frequency selection surface supporting piece is arranged between the two longitudinal frames, and fixing holes are formed in the two sides of the transverse frequency selection surface supporting piece correspondingly so that the frequency selection surfaces connected with the transverse frequency selection surface supporting piece can be fixed correspondingly. According to the protection device, the frequency selection surface is fixed by means of the frame structure formed by the longitudinal frames, good support of the frequency selection surface can be kept, meanwhile, the stability of the frame structure is achieved, and the protection device is easy to expand.

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, and an antenna having the protection device. 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. With the development of mobile communication technology, 5G systems have become increasingly popular, and the proportion of 5G base stations has also increased. However, the high-position platform poles of base stations have been occupied by traditional 3G or 4G systems, and the equipment of 5G systems can only choose a lower position as a second choice. The deployment of new platforms at low positions will lead to coverage contraction. The site of the building's roof is more difficult due to the limitation of the roof space and aesthetic requirements. How to more easily install 5G system equipment and improve 5G coverage and performance gain has become the most urgent need of operators.

[0003] The active-passive (A+P) integrated base station antenna that integrates 5G and 3G / 4G, that is, an antenna that integrates active antennas and passive antennas, solves the problem of tight site resources mentioned above with its unique advantages. No new poles are required for engineering installation, thereby reducing the number of new platforms. The same hanging height of 4G and 5G enables them to have the same coverage. Moreover, high-position installation effectively avoids the problem of trees and buildings blocking, so that 4G and 5G network coverage can be optimized at the same time, and tower rental can be saved to reduce overall costs. At the same time, after A+P replaces the original 4G, the 4G network coverage and performance will not be affected in any way, and the coverage and performance gains of 5G will be significantly improved.

[0004] In such an architecture, a frequency selective surface is usually required, and the support problem of the frequency selective surface will affect the overall performance, which is particularly obvious when two or more layers of frequency selective surfaces are required. CN216214061U proposes a protective device for a single-layer frequency selective surface, but there is no effective assembly technology solution for double-layer or even multi-layer frequency selective surfaces in the prior art. Summary of the invention

[0005] 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 a high rigidity, so the overall brittleness is relatively high, especially when the antenna vibrates, the frequency selective surface is very easy to break and damage. In addition, some active and passive antennas also have the need to set up multiple layers of frequency selective surfaces. In order to achieve the above technical effects, the first aspect of the present disclosure proposes a protective device for protecting the frequency selective surface, the protective device comprising: two longitudinal frames; and a transverse frequency selective surface support member, the transverse frequency selective surface support member is arranged between the two longitudinal frames, wherein fixing holes are respectively arranged on both sides of the transverse frequency selective surface support member, so as to respectively fix the frequency selective surface connected thereto. According to the protective device of the present disclosure, the frequency selective surface is fixed by means of the frame structure formed by the longitudinal frame, which can not only maintain good support for the frequency selective surface, but also achieve the stability of the frame structure, and is easy to expand.

[0006] In the technical solution according to the present disclosure, the protection device further comprises: a stacked frequency selective surface support, the stacked frequency selective surface support being arranged on one side of the lateral frequency selective surface support to connect another frequency selective surface. In this way, the protection device according to the present disclosure can support multiple layers of frequency selective surfaces, thereby optimizing the radio frequency performance of the antenna including the protection device according to the present disclosure.

[0007] In the technical solution according to the present disclosure, the lateral frequency selective surface support also includes a radiating element fixing portion, and the radiating element fixing portion is configured to connect and fix the radiating element connected thereto. In this way, the protective device according to the present disclosure can not only support the frequency selective surface, but also support the corresponding radiating element, thereby further optimizing the radio frequency performance of the antenna including the protective device according to the present disclosure.

[0008] In the technical solution according to the present disclosure, the lateral frequency selective surface support forms a support platform around the fixing hole, and the support platform is configured to support the frequency selective surface connected thereto. In this way, the frequency selective surface can be well supported on the one hand, and the performance of the frequency selective surface is not affected on the other hand.

[0009] In the technical solution according to the present disclosure, a phase shifter is arranged in the longitudinal frame. In this way, the longitudinal frame can be used as a part of the phase shifter in addition to supporting the frequency selective surface, so that the structure of the antenna including the protection device according to the present disclosure can be made more compact, thereby optimizing the performance of the antenna including the protection device according to the present disclosure.

[0010] In the technical solution according to the present disclosure, the lateral frequency selective surface support is provided with connectors at both ends thereof to be fixedly connected to the longitudinal frame. In this way, the lateral frequency selective surface support and the corresponding longitudinal frame can be supported and fixed by means of the provided connectors to enhance the structural strength of the protective device according to the present disclosure.

[0011] In the technical solution according to the content of the present disclosure, a phase cable fixing groove and / or a main feeder fixing groove are arranged around the connecting piece. In this way, the protective device according to the content of the present disclosure can not only realize the supporting function for the frequency selection surface, but also realize the accommodating function for the phase cable and / or the main feeder required for the antenna.

[0012] In the technical solution according to the content of the present disclosure, debugging member fixing pins and / or debugging member fixing buckles are provided extending outwardly at both ends of the lateral frequency selective surface support member. In this way, the longitudinal frame can be supported and fixed by means of the debugging member fixing pins and / or debugging member fixing buckles, so as to strengthen the structural strength of the protection device according to the content of the present disclosure.

[0013] In the technical solution according to the present disclosure, the protection device includes at least two layers of frequency selective surfaces. In this way, the protection device according to the present disclosure can protect the at least two layers of frequency selective surfaces.

[0014] In the technical solution according to the present disclosure, the protection device further comprises at least one transverse frame. In this way, the longitudinal frame can be supported and fixed by means of the transverse frame, so as to enhance the structural strength of the protection device according to the present disclosure.

[0015] In addition, the second aspect of the present disclosure further discloses an antenna, which includes the protection device according to the first aspect of the present disclosure.

[0016] To sum up, in the technical solution according to the contents of the present disclosure, the protective device according to the contents of the present disclosure fixes the frequency selective surface with the help of the frame structure formed by the longitudinal frame, which can not only maintain good support for the frequency selective surface, but also achieve the stability of the frame structure and is easy to expand. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] 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:

[0018] Figure 1 A connection diagram of an existing active and passive integrated base station antenna 100 is shown;

[0019] Figure 2 A schematic diagram of a protection device 200 according to an embodiment of the present disclosure is shown;

[0020] Figure 3 A schematic diagram showing a protection device 200 according to an embodiment of the present disclosure; and

[0021] and Figure 4 A schematic diagram of a protection device 300 according to an embodiment of the present disclosure is shown. DETAILED DESCRIPTION

[0022] 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.

[0023] 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.

[0024] 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.

[0025] In response to this technical problem, the inventors of the present disclosure innovatively conceived of providing a protective device for the frequency selection device, in which a frame structure formed by a longitudinal frame supports the frequency selection surface, so that the frequency selection surface will not easily fail even in a vibrating state.

[0026] The following will first introduce the application scenarios of the protection device proposed according to the present disclosure. Figure 1 FIG. 1 shows a connection diagram of an existing active and passive integrated base station antenna 100. Figure 1 The existing A (active antenna) + P (passive antenna) whole machine layout state, the A antenna 110 and the P antenna 120 are connected into a whole through a load-bearing frame. The P antenna 120 is fixed on one side of the load-bearing frame and the outer cover is packaged. The A antenna 110 is fixed to the other side of the load-bearing frame through a mounting bracket, that is, the A antenna 110 is located on the back of the passive oscillator radiation surface of the P antenna 120 and on the outside of the antenna cover of the P antenna 110, forming two independent individual antennas with the A antenna 110. Here, the P antenna 120 is a passive antenna, including a passive antenna cover and a passive radiation unit arranged in the passive antenna cover. The passive radiation unit has a passive oscillator radiation surface. The A antenna 110 is an active antenna, including an active antenna cover and an active radiation unit arranged in the active antenna cover. In this layout state, the A antenna 110 can be flexibly disassembled and assembled on the antenna cover of the P antenna 120, which can meet the combination requirements of different A antennas 110. Wind resistance will not increase with the addition of the A antenna 110 , and the A antenna 110 and the P antenna 120 can meet different design requirements such as waterproof and dustproof, and the on-site replacement and maintenance of the A antenna 110 and the P antenna 120 are simpler.

[0027] Unlike conventional antennas, conventional 4G antennas basically use aluminum alloy plates with certain strength and rigidity as the reflective surface and mounting surface of the oscillator. In the active and passive integrated antenna, the passive antenna needs to consider the requirements of active performance. In the passive antenna positive projection area, a frequency selective surface is selected to replace the conventional metal reflective surface, so as to achieve the function of reflecting electromagnetic waves of a certain frequency band and transmitting electromagnetic waves of another frequency band. In this way, the radiation units of different frequency bands can be distributed on the same side of the frequency selective surface or on both sides of the frequency selective surface, which improves the flexibility of antenna deployment and saves base station resources.

[0028] However, the working environment of the multi-band base station antenna that integrates 4G and 5G is usually complex. The electromagnetic waves radiated by the radiating units of a certain working frequency band will not only be affected by the radiating units of other working frequency bands, but also by the components of various parts of the antenna. Therefore, double-layer frequency selective surfaces or even multi-layer frequency selective surfaces will bring greater performance improvements to the integrated multi-band fusion antenna.

[0029] The frequency selective surface is usually made of materials such as resin and plastic, and the overall thickness is relatively thin. It usually does not have very high rigidity and is relatively brittle. When the antenna vibrates, the frequency selective surface is very likely to break and be damaged. It is usually necessary to set a vibrator on the frequency selective surface. Since the frequency selective surface itself has weak rigidity, it is usually not easy to place the vibrator.

[0030] In order to achieve good support for the frequency selective surface and support the characteristics of easy expandability, a protection device is proposed according to the present disclosure. In summary, the protection device according to the present disclosure includes two longitudinal frames; and a transverse frequency selective surface support member, which is arranged between the two longitudinal frames, wherein fixing holes are respectively arranged on both sides of the transverse frequency selective surface support member to respectively fix the frequency selective surface connected thereto. The protection device according to the present disclosure fixes the frequency selective surface by means of the frame structure formed by the longitudinal frames, which can not only maintain good support for the frequency selective surface, but also achieve the stability of the frame structure and is easy to expand.

[0031] The following is combined with Figure 2 To Attachment Figure 4 To describe the specific structure of the protection device proposed according to the present disclosure, but those skilled in the art should understand that the specific embodiments here are only exemplary and not restrictive, and any technical solution that falls within the scope of protection outlined in the claims is the content of the present disclosure. Figure 2 FIG. 2 shows a schematic diagram of a protection device 200 according to an embodiment of the present disclosure. Figure 3 FIG. 2 shows a schematic diagram of a protection device 200 according to an embodiment of the present disclosure, and FIG. Figure 4 A schematic diagram of a protection device 300 according to an embodiment of the present disclosure is shown.

[0032] from Figure 2It can be seen that the protection device 200 proposed according to the present disclosure includes the following parts. First, the protection device 200 according to the present disclosure includes at least two longitudinal frames 101. In addition, the protection device 200 according to the present disclosure also includes a transverse frequency selective surface support 104, and the transverse frequency selective surface support 104 is arranged between the longitudinal frame 101 closer to the paper surface and the longitudinal frame 101 farther from the paper surface, wherein fixing holes (not shown in the figure) are respectively arranged on both sides of the transverse frequency selective surface support 104, so as to respectively fix the frequency selective surface connected thereto. The protection device 200 according to the present disclosure fixes the frequency selective surface (not shown in the figure) by means of the frame structure formed by the longitudinal frame 101 closer to the paper surface and the longitudinal frame 101 farther from the paper surface, which can not only maintain good support for the frequency selective surface (not shown in the figure), but also achieve the stability of the frame structure, and is easy to expand. Figure 2 In addition to the above-mentioned components, the protection device 200 according to the present disclosure can also optionally include a plurality of lateral frequency selective surface supports 104, Figure 2 It is shown that ten lateral frequency selective surface supports 104 are included. Of course, those skilled in the art should understand that the ten lateral frequency selective surface supports 104 here are only exemplary and not restrictive. The corresponding number of lateral frequency selective surface supports 104 can be flexibly set according to the size of the frequency selective surface. Compared with the traditional practice, the traditional single-layer frequency selective surface is fixed by a frame on both sides, or a vibrator support is added to the frame to assist the middle lifting. This connection method is no longer applicable when using double-layer or even multi-layer frequency selective surfaces for stacking and assembly. In order to solve the problem of stacking and assembly of double-layer or even multi-layer frequency selective surfaces, the present invention first builds a "well" frame for the frequency selective surface to provide a stable and reliable bearing surface for the frequency selective surface, and then the frequency selective surface is installed and fixed on both sides of the frame; if the number of layers of the frequency selective surface needs to be increased, it is only necessary to increase the superposition assembly of the middle lateral carrier, and then the stacking and installation of the multi-layer frequency selective surface is performed.

[0033] Here, the longitudinal frame 101 (for example, implemented as a longitudinal phase shifter frame 101), the joint panel 102 and the transverse frame 103 (for example, implemented as a transverse reinforcement beam 103) form a rigid frame, and the transverse frequency selective surface support 104 (for example, implemented as a plastic support 104) used in the corresponding active antenna area is fastened to the phase shifter frames 101 on both sides with screws or rivets. On the one hand, it forms a tic-tac-toe frame structure with higher strength and partial elasticity with the rigid frame; on the other hand, it provides a stable and reliable bearing surface for the frequency selective surface. The frequency selective surface is then installed and fixed on both sides of the frame. Figure 3 As shown, Figure 3The middle and lower frequency selective surface 201 is installed on the back side of the lateral frequency selective surface support 104, and the upper frequency selective surface 202 is installed on the front side of the lateral frequency selective surface support 104. The connection between the upper and lower frequency selective surfaces 201 and 202 and the lateral frequency selective surface support 104 can be riveted or screwed. The oscillator assembly 203 is assembled above the upper frequency selective surface 202, and its assembly position falls above the supporting beam. The connection can also be riveted or screwed. Figure 3 In the figure, the contact between the frequency selective surface support and the frequency selective surface adopts the small surface contact form to reduce the contact, thereby reducing the interference of the support on the frequency selective surface wave transmission signal. The through hole feature on the small surface is used to fix the frequency selective surface, and the features on both sides are the connection between the lateral frequency selective surface support 104 and the longitudinal frame 101. After the frequency selective surface is assembled with the tic-tac-toe frame, the overall structure does not lose elasticity while ensuring rigidity, effectively protecting the welding points of the vibrator and the phase cable.

[0034] Furthermore, in addition to the above-mentioned components, the protection device 200 according to the present disclosure can also optionally include, for example, a transverse frame 103. Of course, those skilled in the art should understand that the transverse frame 103 here is only exemplary and not restrictive, and including at least one transverse frame 103 means that a plurality of transverse frames 103 can be included. In this way, the longitudinal frame 101 can be supported and fixed by means of the transverse frame 103, so as to strengthen the structural strength of the protection device 200 according to the present disclosure. In addition, the protection device 200 according to the present disclosure can also optionally include, for example, a connector panel 102, which can make necessary electrical connections.

[0035] exist Figure 2 In the illustrated embodiment, fixing holes for fixing the frequency selective surface are provided on both the front and back sides of the lateral frequency selective surface support member 104. Figure 3 As shown, frequency selective surfaces are provided on both the front and back sides of the frequency selective surface support 104, namely, an upper frequency selective surface 202 and a lower frequency selective surface 201, and these two frequency selective surfaces 201 and 202 are respectively connected to the lateral frequency selective surface support 104 by means of fixing holes correspondingly provided on the lateral frequency selective surface support 104. In addition, the lateral frequency selective surface support 104 forms a supporting platform around the fixing hole, and the supporting platform is constructed to support the frequency selective surface 201 or 202 connected thereto. In this way, on the one hand, the frequency selective surface 201 or 202 can be well supported, and on the other hand, the performance of the frequency selective surface 201 or 202 is not affected. In addition, as Figure 3As shown, the front mounting fixing holes and the back mounting fixing holes are staggered, and the surfaces around the fixing holes that are in contact with the frequency selective surface are partially raised to reduce the contact surface, thereby reducing the interference of the support member on the wave-transmitting signal of the frequency selective surface.

[0036] According to the technical solution of the present disclosure, the protection device further includes: a stacked frequency selective surface support, which is arranged on one side of the lateral frequency selective surface support to connect another frequency selective surface. In this way, the protection device according to the present disclosure can support multiple layers of frequency selective surfaces, thereby optimizing the radio frequency performance of the antenna including the protection device according to the present disclosure. The lateral frequency selective surface support 104 also includes a radiation element fixing portion, which is configured to connect and fix the radiation element connected thereto, such as the radiation element 203. In this way, the protection device 200 according to the present disclosure can not only support the frequency selective surface 201 or 202, but also support the corresponding radiation element 203, thereby further optimizing the radio frequency performance of the antenna including the protection device 200 according to the present disclosure.

[0037] Preferably, a phase shifter is provided in the longitudinal frame 101. In this way, the longitudinal frame 101 can be used as a part of the phase shifter in addition to supporting the frequency selective surface 201 or 202, so that the structure of the antenna including the protection device 200 according to the present disclosure can be made more compact, thereby optimizing the performance of the antenna including the protection device 200 according to the present disclosure.

[0038] In the technical solution according to the present disclosure, the lateral frequency selective surface support is provided with connectors at both ends thereof to be fixedly connected to the longitudinal frame. In this way, the lateral frequency selective surface support and the corresponding longitudinal frame can be supported and fixed by means of the provided connectors to enhance the structural strength of the protective device according to the present disclosure.

[0039] In the technical solution according to the content of the present disclosure, a phase cable fixing groove and / or a main feeder fixing groove are arranged around the connecting piece. In this way, the protective device according to the content of the present disclosure can not only realize the supporting function for the frequency selection surface, but also realize the accommodating function for the phase cable and / or the main feeder required for the antenna.

[0040] In the technical solution according to the content of the present disclosure, debugging member fixing pins and / or debugging member fixing buckles are provided extending outwardly at both ends of the lateral frequency selective surface support member. In this way, the longitudinal frame can be supported and fixed by means of the debugging member fixing pins and / or debugging member fixing buckles, so as to strengthen the structural strength of the protection device according to the content of the present disclosure.

[0041] That is to say, both ends of the frequency selection surface support 104 also have the function of fixing cables and isolating debugging parts. For example, vias can be used to connect the lateral frequency selection surface support 104 to the longitudinal frame 101, and grooves can also be set to serve as wire grooves for phase cables to fix the cables. In addition, additional grooves can be set, such as wire grooves for main feed cables, to fix cables, which effectively solves the problems of looseness and jitter of the antenna during use, prevents the cables from being worn due to external friction, and thus protects the performance indicators of the antenna. These features are implemented, for example, as positioning pins or fixing hooks, and their common function is to fix the side isolation debugging parts. The integrated design reduces the cost of additional materials and effectively saves the space occupied by the antenna.

[0042] In the technical solution according to the present disclosure, the protection device includes at least two layers of frequency selective surfaces. In this way, the protection device according to the present disclosure can protect the at least two layers of frequency selective surfaces.

[0043] Furthermore, it is also possible to provide a frequency selective surface having more than two layers, for example three layers or more. Figure 4 FIG. 3 shows a schematic diagram of a protection device 300 according to the present disclosure. Figure 4 It can be seen that Figure 4 The embodiment shown is a frequency selective surface with more layers stacked below or above the lateral frequency selective surface support. Figure 4 The embodiment shows a schematic diagram of the assembly of the three-layer frequency selective surface and the frame. The three-layer frequency selective surface 2201, 2202 and 2203 are fixed to the longitudinal frames on both sides via the lateral frequency selective surface support members 1101 and 1102. Figure 4In the method, firstly, the lower frequency selective surface 2201 is fixed to the lower surface of the lower horizontal frequency selective surface support 1101, and the fixing form can be screws or rivets, etc.; then, the second frequency selective surface 2202 is laid flat on the upper surface of the lower horizontal frequency selective surface support 1101, and the horizontal frequency selective surface stacking frequency selective surface support 1102 (i.e., another frequency selective surface support) is stacked and pressed on the upper surface of the second frequency selective surface 2202, corresponding to the assembly holes of the lower horizontal frequency selective surface support 1101 one by one, and then screws or rivets are used to press and fix; finally, the upper frequency selective surface 2203 is stacked and assembled, and similarly, it is laid flat on the upper surface of the stacking frequency selective surface support 1102 and pressed and fixed by screws or rivets, etc. If more layers of frequency selective surfaces need to be stacked, they can be assembled in the same way with the frequency selective surface stacking frequency selective surface support. After the frequency selection surface assembly is completed, the vibrator assembly 203 is assembled on the top frequency selection surface 2203, and the assembly position falls on the stacked frequency selection surface support. The connection can also be riveted, screwed, etc. As for the material selection of the multi-layer frequency selection surface, each layer can use a fiber / resin composite material, a flexible plastic film, etc. as the base material, a metal mesh plate can be used, or each layer can be stacked and combined by the above different materials. The metal mesh plate has a relatively stable processing process, which is conducive to the stability of electrical performance in terms of radio frequency, and compresses the stacking height of the multi-layer frequency selection surface in space, making the antenna flat and cheaper. In other words, the protection device 300 also includes at least one stacked frequency selection surface support, which is arranged on one side of the lateral frequency selection surface support to connect another frequency selection surface. In this way, the protection device according to the content of the present disclosure can support the multi-layer frequency selection surface, thereby optimizing the radio frequency performance of the antenna including the protection device according to the content of the present disclosure.

[0044] In addition, the second aspect of the present disclosure further discloses an antenna, which includes the protection device according to the first aspect of the present disclosure.

[0045] The protective device 200 or 300 proposed according to the content of the present disclosure solves the problem of effective and reliable assembly of double-layer or even multi-layer frequency selective surfaces, and solves the problem that the multi-layer frequency selective surfaces are insufficiently rigid and the frequency selective surfaces are prone to fracture and damage when the antenna vibrates. In addition, the protective device 200 or 300 proposed according to the content of the present disclosure improves the overall rigidity of the antenna frame structure and solves the problem of placing the vibrator on the frequency selective surface.

[0046] Here, the multi-layer frequency selective surface according to the content of the present disclosure can use a base material of fiber / resin composite materials, flexible plastic films, etc., can use a metal mesh plate, or can be composed of a combination of the above different materials. In addition, the "well" frame structure composed of the horizontal and vertical strip-shaped structural members has the advantages of large spatial span, high rigidity, simple and clear force path, strong torsion resistance, and can reduce the height of the structure. Furthermore, the overall frame provides a stable and reliable installation carrier for the installation of the vibrator while ensuring rigidity. The installation of the vibrator is relatively free, and at the same time, the welding points of the vibrator can be effectively protected, and it also provides a bearing surface for the installation of the antenna cover support.

[0047] To sum up, in the technical solution according to the contents of the present disclosure, the protective device according to the contents of the present disclosure fixes the frequency selective surface with the help of the frame structure formed by the longitudinal frame, which can not only maintain good support for the frequency selective surface, but also achieve the stability of the frame structure and is easy to expand.

[0048] 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.

[0049] 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: two longitudinal frames; and a transverse frequency selective surface support, said transverse frequency selective surface support being arranged between said two longitudinal frames, Wherein, fixing holes are respectively arranged on both sides of the lateral frequency selective surface supporting member so as to respectively fix the frequency selective surfaces connected thereto.

2. The protection device according to claim 1, characterized in that: The protection device also includes: A stacked frequency selective surface support is provided on one side of the lateral frequency selective surface support to connect another frequency selective surface.

3. The protection device according to claim 1, characterized in that: The lateral frequency selective surface support also includes a radiation element fixing portion, and the radiation element fixing portion is configured to connect and fix the radiation element connected thereto.

4. The protection device according to claim 1, characterized in that: The lateral frequency selective surface support forms a support platform around the fixing hole, and the support platform is configured to support the frequency selective surface connected thereto.

5. The protection device according to claim 1, characterized in that: A phase shifter is arranged in the longitudinal frame.

6. The protection device according to claim 1, characterized in that: The lateral frequency selective surface support is provided with connecting members at both ends thereof to be fixedly connected to the longitudinal frame.

7. The protection device according to claim 6, characterized in that: A phase cable fixing groove and / or a main feeder fixing groove is arranged around the connecting piece.

8. The protection device according to claim 6, characterized in that: Adjustment piece fixing pins and / or adjustment piece fixing buckles are extended outwardly from both ends of the lateral frequency selection surface support.

9. The protection device according to claim 1, characterized in that: The protection device comprises at least two layers of frequency selective surfaces.

10. The protection device according to claim 1, characterized in that: The protection device also comprises at least one transverse frame.

11. An antenna, characterized in that: The antenna comprises a protection device according to any one of claims 1 to 10.

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