Radome and antenna

Abstract

An antenna cover includes a housing having an opening and a cover plate covering the opening. In this antenna cover, the housing and the cover plate jointly form a first assembly space for fixing a passive unit. A side of the cover plate back from the first assembly space is provided with a second assembly space for fixing an active unit. A periodic circuit is disposed on a region on a side of the cover plate facing the first assembly space and at least corresponding to the second assembly space to form a frequency selective surface, so that the present disclosure can dispose the active unit on the side of the cover plate back from the first assembly space without affecting low-frequency reflection and high-frequency wave-transmission efficiency, thereby reducing the total thickness of the antenna cover. In addition, the present disclosure replaces the multilayer cascade structure in the existing technology with only one layer of antenna cover having a frequency selective surface, optimizing and streamlining the structural setup, improving assembly efficiency, and realizing lightweight production.

Description

FIELD OF THE DISCLOSURE

[0001] The present disclosure relates to the technical field of mobile communication, in particular, to an antenna cover and an antenna.BACKGROUND

[0002] In recent years, the rapid development of information and communication technologies, such as mobile Internet and Internet of Things, has led to a continuous explosive growth in data traffic. There is an increasing demand for 5G networks. However, there are problems in the placement of 5G antennas such as site resource constraints and the high cost of building 5G sites. To rapidly deploy a 5G antenna and save site resources and site configuration costs, the 5G antenna is mainly arranged on an original 4G site. That is, a 5G antenna and a related device are added to the original 4G site, to reduce configuration costs and improve a 5G arrangement speed. Therefore, multi-frequency base station antenna gradually becomes mainstream.

[0003] Among them, the "A+P (active + passive)" base station antenna, which combines the AAU of the 5G base station system with the passive antenna unit of the 4G base station system, has been widely accepted and applied due to its more advantageous spatial dimensions, wind loading, and management, and it indicates an important direction for the future evolution of base station antennas.

[0004] The active antenna is generally a 5G antenna operating in a frequency band of 2600 MHz, 3500 MHz, or 4800-5000MHz, that is, the active antenna emits a high-frequency signal. The passive antenna is generally a 4G antenna operating in a frequency band of 690-960MHz, that is, the passive antenna emits a low-frequency signal. The high-frequency signal emitted by the active antenna may easily cause the passive antenna to resonate and generate a high-frequency radiation current, which affects the working performance of the passive antenna. The passive antenna may easily block the high-frequency signal emitted by the active antenna, which weakens the high-frequency signal.

[0005] However, in the existing technology, the frequency selective surface presents a wave-transparent characteristic for the high-frequency signal, which constitutes an open circuit for the high-frequency signal, and constitutes a ground structure for the low-frequency signal, prohibiting the low-frequency signal from penetrating, so as to integrate the active antenna and the passive antenna.

[0006] However, common "A+P" base station antennas often have two or even more layers of frequency selective surfaces, and both the reflector and frequency selective surfaces are installed inside the antenna cover of the passive antenna, which results in a large total thickness of the antenna cover, a large cross-section and a heavy weight of the "A+P" base station antenna. In addition, a common frequency selective surface is made of resin, plastic, etc. A single-layer frequency selective surface is thin, which makes it less rigid. The overall brittleness of the frequency selective surfaces is higher, making it difficult to assemble internal components.

[0007] Therefore, how to improve the technical defects in the existing technology has always been an urgent problem to be solved by those skilled in the art.SUMMARY

[0008] Some objectives of the present disclosure are to provide an antenna cover and an antenna, where only one layer of antenna cover having a frequency selective surface is provided, which replaces the multilayer cascade structure in the existing technology, to reduce the total thickness of the antenna cover, and flatten the overall structure of the antenna assembly.

[0009] The technical solution provided by the present disclosure is as follows.

[0010] An antenna cover includes a housing having an opening and a cover plate covering the opening. The housing and the cover plate jointly form a first assembly space for fixing a passive unit. A side of the cover plate back from the first assembly space is provided with a second assembly space for fixing an active unit. A periodic circuit is disposed on a region on a side of the cover plate facing the first assembly space and at least corresponding to the second assembly space to form a frequency selective surface.

[0011] In some embodiments, the cover plate includes a body, a first side plate, and a second side plate. The first side plate and the second side plate are both disposed on a side of the body back from the first assembly space. The first side plate and the second side plate together with the body form the second assembly space for fixing the active unit.

[0012] In some embodiments, the body has a rectangular structure, and the first side plate and the second side plate are disposed opposite to each other. Two mounting racks are provided at top of the first assembly space, and the two mounting racks are respectively located on sides of the first side plate and the second side plate away from each other. A docking plate for docking against a mounting rack is provided on an end of each of the first side plate and the second side plate away from the body.

[0013] In some embodiments, at least one first reinforcing member is disposed between the mounting rack disposed on the first side plate and the mounting rack disposed on the second side plate. The first reinforcing member includes a first main beam, and a first leg and a second leg respectively disposed at two ends of the first main beam. The first leg is configured to connect the first main beam and the mounting rack disposed on the first side plate, and the second leg is configured to connect the first main beam and the mounting rack disposed on the second side plate.

[0014] In some embodiments, a second main beam is provided on a side of the body facing the first assembly space. One end of the second main beam is fixedly connected to the mounting rack provided on the first side plate, and the other end of the second main beam is fixedly connected to the mounting rack provided on the second side plate.

[0015] In some embodiments, at least one second reinforcing member is disposed between the mounting rack disposed on the first side plate and the mounting rack disposed on the second side plate. The second reinforcing member includes a third main beam, and a third leg and a fourth leg respectively disposed at two ends of the third main beam, the third leg is configured to connect the third main beam and the mounting rack disposed on the first side plate, and the fourth leg is configured to connect the third main beam and the mounting rack disposed on the second side plate. At least one passive unit is fixed on a side of the third main beam back from the cover plate.

[0016] In some embodiments, each of the at least one second reinforcing member is provided with at least one third reinforcing member. The third reinforcing member includes a fourth main beam, and a fifth leg and a sixth leg respectively disposed at two ends of the fourth main beam, the fifth leg is configured to connect the fourth main beam and the third leg, and the sixth leg is configured to connect the fourth main beam and the fourth leg.

[0017] In some embodiments, the body, the first side plate, and the second side plate are integrally formed, and are all made of a dielectric material.

[0018] In some embodiments, the mounting rack is hollow, and / or a transverse section of the mounting rack is rectangular.

[0019] The present disclosure further provides an antenna, including an active unit, a passive unit, and the antenna assembly according to any one of the above embodiments.

[0020] The technical effects of the present disclosure are as follows.

[0021] 1. In this present disclosure, the periodic circuit is disposed on the cover plate to form the frequency selective surface, so that the antenna cover has a frequency selection function. In this way, the active unit can be disposed on the side of the cover plate back from the first assembly space without affecting low-frequency reflection and high-frequency radio-wave transmission efficiency, thereby reducing the total thickness of the antenna cover. In addition, the present disclosure replaces the multilayer cascade structure in the existing technology with only one layer of antenna cover having a frequency selective surface, optimizing and streamlining the structural setup, improving assembly efficiency, and realizing lightweight production.

[0022] 2. In the present disclosure, by providing the mounting racks and making the mounting racks be matched with the docking plates on the first side plate and the second side plate, the deformation resistance of the cover plate can be improved to a certain extent, and the structural strength of the cover plate can be improved, thereby protecting the periodic circuit on the cover plate to a certain extent. In addition, a first reinforcing member and a second reinforcing member are provided between the two mounting racks. Taking the first reinforcing member as an example, the first main beam, the first leg, and the second leg jointly form an arch bridge structure. If the first leg and the second leg tend to approach each other under an external force, the first main beam can apply pressure to the first leg and the second leg to prevent the first leg and the second leg from approaching each other. In some examples, if the first leg and the second leg tend to move away from each other under the external force, the first main beam can also prevent the first leg and the second leg from continuing to move away from each other. In this way, the structural strength and stability of the two mounting racks can also be ensured, the cover plate is prevented from being deformed by force, the structural strength and structural stability of the cover plate are further improved, and the problems of low stiffness and high overall brittleness of the frequency selective surface in the existing technology are solved.

[0023] 3. In this present disclosure, the second reinforcing member may also be used to fix the passive unit to prevent the passive unit from being squeezed by the external force or other structures, thereby improving the service life of the passive unit and making the overall structural arrangement of the antenna cover more reasonable and practical.BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present disclosure will be further described in detail below with reference to the accompanying drawings and specific embodiments. FIG. 1 is an exploded view of an antenna cover, a passive unit, and an active unit according to the present disclosure. FIG. 2 is a perspective view of the antenna cover in one state according to the present disclosure. FIG. 3 is a perspective view of the antenna cover in another state according to the present disclosure. FIG. 4 is a perspective view of a first reinforcing member and a second main beam according to the present disclosure. FIG. 5 is a perspective view of a second reinforcing member and a third reinforcing member according to the present disclosure. FIG. 6 is a perspective view of a body, a first side plate, and a second side plate in one state according to the present disclosure. FIG. 7 is a sectional view of an antenna cover, a passive unit, and an active unit according to the present disclosure.

[0025] Description of reference signs: 100, Housing; 110, opening; 120, mounting rack; 130, first reinforcing member; 131, first main beam; 132, first leg; 133, second leg; 140, second reinforcing member; 141, third main beam; 142, third leg; 143, fourth leg; 150, third reinforcing member; 151, fourth main beam; 152, fifth leg; 153, sixth leg; 160, first assembly space; 200, cover plate; 210, body; 211, periodic circuit; 212, second main beam; 213, secondary beam; 220, first side plate; 230, second side plate; 240, second assembly space; 250, docking plate; 300, passive unit; 400, active unit. DETAILED DESCRIPTION

[0026] In the following description, for purposes of explanation and not limitation, specific details such as particular system structures and technologies are set forth in order to provide a thorough understanding of examples of the present disclosure. However, it will be apparent to those skilled in the art that the present disclosure may be practiced in other examples that depart from these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods are omitted so as not to obscure the description of the present disclosure with unnecessary details.

[0027] In order to more clearly illustrate the examples of the present disclosure or the technical solutions in the prior art, specific embodiments of the present disclosure will be described below with reference to the accompanying drawings. Apparently, the accompanying drawings in the following description show merely some examples of the present disclosure, and a person of ordinary skill in the art may still obtain other accompanying drawings and other embodiments based on these accompanying drawings without creative efforts.

[0028] In order to simplify the drawings, only the parts related to the present disclosure are schematically shown in the drawings, and they do not represent the actual structure of the product. In addition, in order to make the drawings concise and easy to understand, only one of the components having the same structure or function is schematically illustrated in some drawings, or only one of them is marked. Herein, "a" means not only "only this one", but also "more than one".

[0029] It should be further understood that the term "and / or" used in the specification and the appended claims of this present disclosure refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0030] In this document, it should be noted that, unless otherwise expressly specified and limited, the terms "mounted," "connected," and "coupled" should be understood broadly. For example, it may be fixedly connected, detachably connected, integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected through an intermediate medium, or an internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present disclosure can be understood according to specific situations.

[0031] In the examples shown in the drawings, indications of direction (such as up, down, left, right, front and back) are used to explain the structure and movement of various components of the present disclosure, not absolute but relative. These descriptions are appropriate when the components are in the positions shown in the drawings. If the description of the positions of these components changes, the indications of these directions also change accordingly.

[0032] In addition, in the descriptions of this present disclosure, the terms "first", "second", etc., are merely used for distinguishing descriptions, and cannot be understood as an indication or implication of relative importance.

[0033] According to a specific example provided by the present disclosure, referring to FIG. 1 to FIG. 7, an antenna cover may specifically include a housing 100 having an opening 110 and a cover plate 200 covering the opening 110 of the housing 100. In this antenna cover, the housing 100 and the cover plate 200 jointly form a first assembly space 160 for fixing the passive unit 300, and a second assembly space 240 for fixing the active unit 400 is provided on the side of the cover 200 back from the first assembly space 160. A periodic circuit 211 is provided in a region on a side of the cover plate 200 facing the first assembly space 160 and at least corresponding to the second assembly space 240, to form a frequency selective surface. Specifically, the periodic circuit 211 includes frame thin lines and toothed cross-finger lines in a parallel resonant structure. The frame thin lines introduce a parallel inductor, and the toothed cross-finger lines introduce a parallel capacitor. The periodic circuit 211 is equivalent to an open circuit when the active unit 400 is operating in a high-frequency working frequency band, and the parallel capacitor-inductor circuit is in a resonance state. In addition, the periodic circuit 211 has a band-pass characteristic in a resonant frequency band, and a band-stop characteristic outside the resonant frequency band. In this way, a frequency selective surface can be formed on the cover plate 200, so that the antenna cover has a frequency selection function. The antenna cover has a wave-transparent characteristic to the high-frequency signals emitted by the active unit 400, constituting an open circuit with the high-frequency signals, and constitutes a ground structure to the low-frequency signals emitted by the passive unit 300, prohibiting the low-frequency signals from penetrating.

[0034] In this example, by disposing the periodic circuit on the side of the cover plate 200 facing the first assembly space 160, the periodic circuit 211 can be better protected. The periodic circuit is located within the first assembly space 160 and is protected from air, moisture, or dust in an external environment, for a long service life.

[0035] In addition, this example further proposes to dispose the periodic circuit 211 in a region of the cover plate 200 at least corresponding to the second assembly space 240. Because the cover 200 is provided with the passive unit 300 and the active unit 400 on two sides of the region corresponding to the second assembly space 240, frequency selection can be performed on the passive unit 300 and the active unit 400, to avoid mutual interference between the high-frequency signal and the low-frequency signal. If the region of the cover plate 200 corresponding to the second assembly space 240 is not provided with the periodic circuit or only partially provided with the periodic circuit, the low-frequency signal emitted by the passive unit 300 and the high-frequency signal emitted by the active unit 400 would be interfered, thereby affecting the use performance of the entire antenna.

[0036] Therefore, in this example, the periodic circuit 211 is disposed in the region on the side of the cover plate 200 facing the first assembly space 160 and at least corresponding to the second assembly space 240, so that the active unit 400 is disposed on the side of the cover plate 200 back from the first assembly space 160 without affecting the low-frequency reflection and high-frequency wave-transparent efficiency, thereby reducing the total thickness of the antenna cover. In addition, the example adopts one layer of antenna cover having a frequency selective surface, instead of the multilayer cascade structure in the existing technology, optimizing and streamlining the structural setup, improving assembly efficiency, and realizing lightweight production.

[0037] In actual production, the user may dispose all or part of the periodic circuit 211 on the side of the cover plate 200 facing the first assembly space 160 according to actual needs, as long as it is ensured that the cover plate 200 can perform frequency selection on the passive unit 300 and the active unit 400, which will not be repeated here and are all within the protection range of the present disclosure.

[0038] Specifically, the periodic circuit 211 may be a unit formed from a pattern of any of the metals such as gold, silver, copper, aluminium, etc., and is preferably fixed to the cover plate 200 by selective electroplating, etching, printing or attaching, etc., which will not be repeated herein, and are all within the protection range of the present disclosure. Specifically, referring to FIG. 2, FIG. 3 and FIG. 6, the cover plate 200 includes a body 210, a first side plate 220, and a second side plate 230. The first side plate 220 and the second side plate 230 are both disposed on the side of the body 210 back from the first assembly space 160, and together with the body 210 form a second assembly space 240 for fixing the active unit 400.

[0039] In this example, the periodic circuit 211 is disposed on the side of the body 210 facing the first assembly space 160, so that the cover plate 200 better performs frequency selection on the active unit and the passive unit 300. Of course, the setting in which the periodic circuit 211 is located in the first assembly space 160 also provides better protection from the influence of air, moisture or dust in the external environment, and more stable operation.

[0040] Preferably, referring to FIG. 1 to FIG. 3 and FIG. 6, the body 210 of the cover plate 200 is rectangular in shape, and the first side plate 220 and the second side plate 230 are disposed opposite to each other. The top of the first assembly space 160 is provided with two mounting racks 120, which are respectively located on the sides of the first side plate 220 and the second side plate 230 away from each other. In this example, the ends of the first side plate 220 and the second side plate 230 away from the body 210 are both provided with docking plates 250 for docking the mounting racks 120.

[0041] Specifically, the mounting racks 120 and the docking plates 250 may be fixedly connected by using a fastener to cover the cover plate 200 at the opening 110 of the housing 100. In this example, the first side plate 220 and the second side plate 230 are supported by the mounting racks 120 and the housing 100, to prevent the cover plate 200 from being deformed due to bearing of the active unit 400, and improve the deformation resistance and structural strength of the cover plate 200, thereby protecting the periodic circuit 211 on the cover plate 200 to a certain extent, so that the frequency selection function of the antenna cover can function for a long time and stably with a long service life and good performance.

[0042] Further, referring to FIG. 1, FIG. 3 and FIG. 4, at least one first reinforcing member 130 is disposed between the mounting rack 120 disposed on the first side plate 220 and the mounting rack 120 disposed on the second side plate 230. The first reinforcing member 130 includes a first main beam 131, a first leg 132 and a second leg 133 respectively disposed at two ends of the first main beam 131. The first leg 132 is configured to connect the first main beam 131 and the mounting rack 120 disposed on the first side plate 220. The second leg 133 is configured to connect the first main beam 131 and the mounting rack 120 disposed on the second side plate 230.

[0043] In this example, the first main beam 131, the first leg 132, and the second leg 133 together form an arch bridge structure. When the body of the cover plate 200 is deformed by force, the first side plate 220, the second side plate 230, and the docking plate 250 thereon will drive the mounting rack 120 to deform together. Specifically, if the first side plate 220 and the second side plate 230 tend to move away from each other under the deformation, ends of the two mounting racks 120 away from the body 210 may tend to move close to each other, so that the first leg 132 and the second leg 133 tend to move close to each other. In this way, the first main beam 131 can apply pressure to the first leg 132 and the second leg 133 to prevent the first leg 132 and the second leg 133 from moving close to each other, thereby preventing the first side plate 220, the second side plate 230, and the docking plates 250 from deforming, and further preventing the body 210 of the cover plate 200 from being deformed by force. If the first side plate 220 and the second side plate 230 tend to approach each other under the deformation, the ends of the two mounting racks 120 away from the body 210 of the cover plate 200 tend to move away from each other, so that the first leg 132 and the second leg 133 tend to move away from each other. In this example, the first main beam 131 may also prevent the first leg 132 and the second leg 133 from continuing to move away from each other.

[0044] In this example, by providing the first reinforcing member 130, the structural strength and stability of the two mounting racks 120 are ensured, the structural strength and structural stability of the cover plate 200 are further improved, the problems of low frequency selective surface rigidity and high overall brittleness in the existing technology are effectively solved, the stable operation of the frequency selective surface on the cover plate 200 is ensured, and the service performance and service life of the antenna cover are greatly improved.

[0045] In the example, the first leg 132 and the second leg 133 may be respectively fixed to the sides of the two mounting racks 120 facing away from the body 210 of the cover plate 200, or respectively fixed to the sides of the two mounting racks 120 close to each other, or respectively fixed to the sides of the two mounting racks 120 facing away from each other, etc., which are not repeated herein and are all within the protection range of the present disclosure.

[0046] Preferably, the first main beam 131, the first leg 132, and the second leg 133 are integrally formed, so that no separate assembly is required, and the installation is fast and the structure is strong.

[0047] Further, referring to FIG. 3 and FIG. 4, a second main beam 212 is disposed on a side of the body 210 of the cover plate 200 facing the first assembly space 160. One end of the second main beam 212 is fixedly connected to the mounting rack 120 provided on the first side plate 220, and the other end the second main beam 212 is fixedly connected to the mounting rack 120 provided on the second side plate 230. The second main beam 212 can also play a certain supporting role, improve the structural strength and structural stability of the cover plate 200 to a certain extent, and prevent the periodic circuit 211 from being damaged due to deformation of the cover plate 200.

[0048] Preferably, referring to FIG. 3 and FIG. 4, the second main beam 212 and the second reinforcing member 140 are arranged in one-to-one correspondence, and both ends of the second main beam 212 are provided with secondary beams 213 for docking the mounting racks 120. In this example, the first reinforcing member 130 in the shape of an arch bridge, together with the second main beam 212 and the two secondary beams 213, form a ring structure, which can further prevent the first side plate 220, the second side plate 230, and the docking plates 250 from being deformed by force, so as to keep the structural strength and structural stability of the antenna cover in an optimal state, avoiding that the periodic circuit 211 is damaged due to the deformation of the body 210 of the cover plate 200, and substantially greatly improving the service performance and service life of the antenna cover.

[0049] Referring to FIG. 1 to FIG. 3 and FIG. 5, in order to further improve the structural strength and stability of the two mounting racks 120 to increase the deformation resistance of the cover plate 200, in a specific example, at least one second reinforcing member 140 is disposed between the mounting rack 120 disposed on the first side plate 220 and the mounting rack 120 disposed on the second side plate 230. The second reinforcing member 140 includes a third main beam 141, a third leg 142 and a fourth leg 143 respectively disposed at two ends of the third main beam 141. The third leg 142 is configured to connect the third main beam 141 and the mounting rack 120 disposed on the first side plate 220. The fourth leg 143 is configured to connect the third main beam 141 and the mounting rack 120 disposed on the second side plate 230. At least one passive unit 300 may be fixed on a side of the third main beam 141 back from the cover plate 200.

[0050] In this example, the third main beam 141, the third leg 142, and the fourth leg 143 together form an arch bridge structure. On one hand, the second reinforcing member 140 formed by the third main beam 141, the third leg 142, and the fourth leg 143 can cooperate with the first reinforcing member 130 and the second main beam 212 to further improve the structural strength of the antenna cover and ensure the long-term and stable operation of the periodic circuit 211. On the other hand, this arrangement enables the third main beam 141 to fix the passive unit 300 in the first assembly space 160, while prevents the passive unit 300 from being squeezed by an external force or other structures, thereby improving the service life of the passive unit 300, and making the overall structural arrangement of the antenna cover more reasonable and practical.

[0051] In an example, referring to FIG. 1, the length of the mounting racks 120 is adapted to the length of the first assembly space 160. In addition, there are multiple second reinforcing members 140 capable of fixing the passive unit 300, which are sequentially arranged along the length direction of the mounting racks 120. In some examples, in actual production, the length of the mounting racks 120 and the number of the second reinforcing members 140 may be flexibly set according to actual needs, which is not limited herein and falls within the protection range of the present disclosure.

[0052] Preferably, the third main beam 141, the third leg 142, and the fourth leg 143 are integrally formed, so that no separate assembly is required, and the installation is fast and the structure is strong.

[0053] Considering that the second reinforcing member 140 further needs to carry the passive unit 300, in an example, there is one third main beam 141 in each second reinforcing member 140, and the area of the transverse cross section is large, so that four corners of the passive unit 300 can be all fixed to the first main beam 131 by fasteners.

[0054] Referring to FIG. 3 and FIG. 5, in one example, the number of the third main beams 141 in each second reinforcing member 140 may also be two, and the area of the transverse cross section is small. In this example, the four corners of the passive unit 300 may be fixed to the two third main beams 141 in pairs. In this example, while the fixing effect of the second reinforcing member 140 on the passive unit 300 is not affected, the weight of the overall structure, the material consumption, and the production cost are reduced, and the economy is extremely efficient, which is beneficial to the lightweight production of the antenna cover.

[0055] By contrast, referring to FIG. 3 and FIG. 5, since the third main beam 141 needs to bear the weight of the passive unit 300 while providing stable support for the body 210 of the cover plate 200, the third leg 142 and the fourth leg 143 for connecting the third main beam 141 and the fixing racks should also have a relatively stable fixing function.

[0056] In this way, in one example, the number of the third leg 142 in each second reinforcing member 140 is one, and the area of the transverse cross section is large. The number of the fourth leg 143 in each second reinforcing member 140 is one, and the area of the transverse cross section is large.

[0057] In one example, in the actual production, the number of the third leg 142 in each second reinforcing member 140 is two, and the area of the transverse cross section is small. The number of the fourth leg 143 in each second reinforcing member 140 is two, and the area of the transverse cross section is small. In this way, not only the fixing effect of the third leg 142 and the fourth leg 143 is ensured, but also the weight of the overall structure, the material consumption, and the production cost are reduced, and the economy is extremely efficient, which is beneficial to the lightweight production of the antenna cover.

[0058] Specifically, in the present example, the third leg 142 and the fourth leg 143 may be respectively fixed to the sides of the two mounting racks 120 facing away from the body 210 of the cover plate 200, or respectively fixed to the sides of the two mounting racks 120 close to each other, or respectively fixed to the sides of the two mounting racks 120 facing away from each other, etc., which will not be repeated herein and are all within the protection range of the present disclosure.

[0059] Further, referring to FIG. 5, each second reinforcing member 140 is provided with at least one third reinforcing member 150. The third reinforcing member 150 includes a fourth main beam 151 and a fifth leg 152 and a sixth leg 153 respectively disposed at two ends of the fourth main beam 151. The fifth leg 152 is configured to connect the fourth main beam 151 and the third leg 142. The sixth leg 153 is configured to connect the fourth main beam 151 and the fourth leg 143. In this example, the fourth main beam 151, the fifth leg 152 and the sixth leg 153 also jointly form an arch bridge structure, which further enhances the supporting of the second reinforcing member 140 on the cover plate 200 and the fixing and protection on the passive unit 300, so that the structural strength and structural stability of the antenna cover are better.

[0060] Specifically, referring to FIG. 5, each second reinforcing member 140 is provided with two third reinforcing members 150, which are symmetrically disposed on two sides of the second reinforcing member 140, so that the second reinforcing member 140 is stressed more uniformly, and has better structural strength and bearing capacity, thereby improving the structural strength and structural stability of the antenna cover to some extent.

[0061] In this example, the fifth leg 152 may be fixed to a side of the third leg 142 facing the fourth leg 143, or may be fixed to a side of the third leg 142 back from the fourth leg 143, or may be fixed to a side of the third leg 142 away from the other fifth leg 152. Correspondingly, the sixth leg 153 may be fixed to a side of the fourth leg 143 facing the third leg 142, or may be fixed to a side of the fourth leg 143 back from the third leg 142, or may be fixed to a side of the fourth leg 143 away from the other sixth leg 153. In actual productions, the specific arranged positions of the fifth leg 152 and the sixth leg 153 may be flexibly changed according to actual conditions, which will not be repeated here, and all fall within the protection range of the present disclosure.

[0062] Preferably, the fourth main beam 151, the fifth leg 152 and the sixth leg 153 are integrally formed, eliminating the need for separate assembly, providing fast installation and high structural strength.

[0063] It should be noted that, in the foregoing several examples, because the first reinforcing member 130 does not need to bear a load, the areas of the transverse cross sections of the first main beam 131, the first leg 132, and the second leg 133 do not need to be enlarged, which may be set normally. There is no need to provide two first main beams 131, or two first legs 132, or two second legs 133 in quantity. It is sufficient to set up a setting that ensures that the cover 200 body 210 plays an effective supporting role, which is conducive to the lightweight production of the overall structure.

[0064] Correspondingly, since the third reinforcing member 150 also does not need to bear weight, the areas of the transverse cross sections of the fourth main beam 151, the fifth leg 152 and the sixth leg 153 do not need to be enlarged, which may be set normally. There is no need to provide two fourth main beams 151, or two fifth legs 152, or two sixth legs 153 in quantity. It is sufficient to set up a setting that can assist in supporting the second reinforcing member 140, which is conducive to the lightweight production of the overall structure.

[0065] Specifically, the mounting rack 120 mentioned in the above examples is preferably hollow, and the transverse section of the mounting rack 120 is rectangular.

[0066] Preferably, the body 210, the first side plate 220, and the second side plate 230 of the cover plate 200 are integrally formed, and the base materials of the body 210, the first side plate 220 and the second side plate 230 of the cover plate 200 are all dielectric materials, including one or more of fiber / resin composite materials, flexible plastic films, etc., so as to solve the problems of poor surface rigidity and high brittleness of frequency selective surface in the prior art.

[0067] The present disclosure further provides an antenna, including an active unit 400, a passive unit 300, and the antenna cover provided in any of the above examples.

[0068] In the above examples, the description of each example has its own emphasis, and for a part not described or recorded in detail in a certain example, reference may be made to the related description of other examples.

[0069] It should be noted that the above examples may be freely combined as required. The above are only preferred examples of the present disclosure, and it should be noted that those skilled in the art can also make several improvements and modifications without departing from the principle of the present disclosure, and these improvements and modifications should also be considered as the protection range of the present disclosure.

Examples

Embodiment Construction

[0026]In the following description, for purposes of explanation and not limitation, specific details such as particular system structures and technologies are set forth in order to provide a thorough understanding of examples of the present disclosure. However, it will be apparent to those skilled in the art that the present disclosure may be practiced in other examples that depart from these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods are omitted so as not to obscure the description of the present disclosure with unnecessary details.

[0027]In order to more clearly illustrate the examples of the present disclosure or the technical solutions in the prior art, specific embodiments of the present disclosure will be described below with reference to the accompanying drawings. Apparently, the accompanying drawings in the following description show merely some examples of the present disclosure, and a person of ordin...

FIELD OF THE DISCLOSURE

[0001] The present disclosure relates to the technical field of mobile communication, in particular, to an antenna cover and an antenna.BACKGROUND

[0002] In recent years, the rapid development of information and communication technologies, such as mobile Internet and Internet of Things, has led to a continuous explosive growth in data traffic. There is an increasing demand for 5G networks. However, there are problems in the placement of 5G antennas such as site resource constraints and the high cost of building 5G sites. To rapidly deploy a 5G antenna and save site resources and site configuration costs, the 5G antenna is mainly arranged on an original 4G site. That is, a 5G antenna and a related device are added to the original 4G site, to reduce configuration costs and improve a 5G arrangement speed. Therefore, multi-frequency base station antenna gradually becomes mainstream.

[0003] Among them, the "A+P (active + passive)" base station antenna, which combines the AAU of the 5G base station system with the passive antenna unit of the 4G base station system, has been widely accepted and applied due to its more advantageous spatial dimensions, wind loading, and management, and it indicates an important direction for the future evolution of base station antennas.

[0004] The active antenna is generally a 5G antenna operating in a frequency band of 2600 MHz, 3500 MHz, or 4800-5000MHz, that is, the active antenna emits a high-frequency signal. The passive antenna is generally a 4G antenna operating in a frequency band of 690-960MHz, that is, the passive antenna emits a low-frequency signal. The high-frequency signal emitted by the active antenna may easily cause the passive antenna to resonate and generate a high-frequency radiation current, which affects the working performance of the passive antenna. The passive antenna may easily block the high-frequency signal emitted by the active antenna, which weakens the high-frequency signal.

[0005] However, in the existing technology, the frequency selective surface presents a wave-transparent characteristic for the high-frequency signal, which constitutes an open circuit for the high-frequency signal, and constitutes a ground structure for the low-frequency signal, prohibiting the low-frequency signal from penetrating, so as to integrate the active antenna and the passive antenna.

[0006] However, common "A+P" base station antennas often have two or even more layers of frequency selective surfaces, and both the reflector and frequency selective surfaces are installed inside the antenna cover of the passive antenna, which results in a large total thickness of the antenna cover, a large cross-section and a heavy weight of the "A+P" base station antenna. In addition, a common frequency selective surface is made of resin, plastic, etc. A single-layer frequency selective surface is thin, which makes it less rigid. The overall brittleness of the frequency selective surfaces is higher, making it difficult to assemble internal components.

[0007] Therefore, how to improve the technical defects in the existing technology has always been an urgent problem to be solved by those skilled in the art.SUMMARY

[0008] Some objectives of the present disclosure are to provide an antenna cover and an antenna, where only one layer of antenna cover having a frequency selective surface is provided, which replaces the multilayer cascade structure in the existing technology, to reduce the total thickness of the antenna cover, and flatten the overall structure of the antenna assembly.

[0009] The technical solution provided by the present disclosure is as follows.

[0010] An antenna cover includes a housing having an opening and a cover plate covering the opening. The housing and the cover plate jointly form a first assembly space for fixing a passive unit. A side of the cover plate back from the first assembly space is provided with a second assembly space for fixing an active unit. A periodic circuit is disposed on a region on a side of the cover plate facing the first assembly space and at least corresponding to the second assembly space to form a frequency selective surface.

[0011] In some embodiments, the cover plate includes a body, a first side plate, and a second side plate. The first side plate and the second side plate are both disposed on a side of the body back from the first assembly space. The first side plate and the second side plate together with the body form the second assembly space for fixing the active unit.

[0012] In some embodiments, the body has a rectangular structure, and the first side plate and the second side plate are disposed opposite to each other. Two mounting racks are provided at top of the first assembly space, and the two mounting racks are respectively located on sides of the first side plate and the second side plate away from each other. A docking plate for docking against a mounting rack is provided on an end of each of the first side plate and the second side plate away from the body.

[0013] In some embodiments, at least one first reinforcing member is disposed between the mounting rack disposed on the first side plate and the mounting rack disposed on the second side plate. The first reinforcing member includes a first main beam, and a first leg and a second leg respectively disposed at two ends of the first main beam. The first leg is configured to connect the first main beam and the mounting rack disposed on the first side plate, and the second leg is configured to connect the first main beam and the mounting rack disposed on the second side plate.

[0014] In some embodiments, a second main beam is provided on a side of the body facing the first assembly space. One end of the second main beam is fixedly connected to the mounting rack provided on the first side plate, and the other end of the second main beam is fixedly connected to the mounting rack provided on the second side plate.

[0015] In some embodiments, at least one second reinforcing member is disposed between the mounting rack disposed on the first side plate and the mounting rack disposed on the second side plate. The second reinforcing member includes a third main beam, and a third leg and a fourth leg respectively disposed at two ends of the third main beam, the third leg is configured to connect the third main beam and the mounting rack disposed on the first side plate, and the fourth leg is configured to connect the third main beam and the mounting rack disposed on the second side plate. At least one passive unit is fixed on a side of the third main beam back from the cover plate.

[0016] In some embodiments, each of the at least one second reinforcing member is provided with at least one third reinforcing member. The third reinforcing member includes a fourth main beam, and a fifth leg and a sixth leg respectively disposed at two ends of the fourth main beam, the fifth leg is configured to connect the fourth main beam and the third leg, and the sixth leg is configured to connect the fourth main beam and the fourth leg.

[0017] In some embodiments, the body, the first side plate, and the second side plate are integrally formed, and are all made of a dielectric material.

[0018] In some embodiments, the mounting rack is hollow, and / or a transverse section of the mounting rack is rectangular.

[0019] The present disclosure further provides an antenna, including an active unit, a passive unit, and the antenna assembly according to any one of the above embodiments.

[0020] The technical effects of the present disclosure are as follows.

[0021] 1. In this present disclosure, the periodic circuit is disposed on the cover plate to form the frequency selective surface, so that the antenna cover has a frequency selection function. In this way, the active unit can be disposed on the side of the cover plate back from the first assembly space without affecting low-frequency reflection and high-frequency radio-wave transmission efficiency, thereby reducing the total thickness of the antenna cover. In addition, the present disclosure replaces the multilayer cascade structure in the existing technology with only one layer of antenna cover having a frequency selective surface, optimizing and streamlining the structural setup, improving assembly efficiency, and realizing lightweight production.

[0022] 2. In the present disclosure, by providing the mounting racks and making the mounting racks be matched with the docking plates on the first side plate and the second side plate, the deformation resistance of the cover plate can be improved to a certain extent, and the structural strength of the cover plate can be improved, thereby protecting the periodic circuit on the cover plate to a certain extent. In addition, a first reinforcing member and a second reinforcing member are provided between the two mounting racks. Taking the first reinforcing member as an example, the first main beam, the first leg, and the second leg jointly form an arch bridge structure. If the first leg and the second leg tend to approach each other under an external force, the first main beam can apply pressure to the first leg and the second leg to prevent the first leg and the second leg from approaching each other. In some examples, if the first leg and the second leg tend to move away from each other under the external force, the first main beam can also prevent the first leg and the second leg from continuing to move away from each other. In this way, the structural strength and stability of the two mounting racks can also be ensured, the cover plate is prevented from being deformed by force, the structural strength and structural stability of the cover plate are further improved, and the problems of low stiffness and high overall brittleness of the frequency selective surface in the existing technology are solved.

[0023] 3. In this present disclosure, the second reinforcing member may also be used to fix the passive unit to prevent the passive unit from being squeezed by the external force or other structures, thereby improving the service life of the passive unit and making the overall structural arrangement of the antenna cover more reasonable and practical.BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present disclosure will be further described in detail below with reference to the accompanying drawings and specific embodiments. FIG. 1 is an exploded view of an antenna cover, a passive unit, and an active unit according to the present disclosure. FIG. 2 is a perspective view of the antenna cover in one state according to the present disclosure. FIG. 3 is a perspective view of the antenna cover in another state according to the present disclosure. FIG. 4 is a perspective view of a first reinforcing member and a second main beam according to the present disclosure. FIG. 5 is a perspective view of a second reinforcing member and a third reinforcing member according to the present disclosure. FIG. 6 is a perspective view of a body, a first side plate, and a second side plate in one state according to the present disclosure. FIG. 7 is a sectional view of an antenna cover, a passive unit, and an active unit according to the present disclosure.

[0025] Description of reference signs: 100, Housing; 110, opening; 120, mounting rack; 130, first reinforcing member; 131, first main beam; 132, first leg; 133, second leg; 140, second reinforcing member; 141, third main beam; 142, third leg; 143, fourth leg; 150, third reinforcing member; 151, fourth main beam; 152, fifth leg; 153, sixth leg; 160, first assembly space; 200, cover plate; 210, body; 211, periodic circuit; 212, second main beam; 213, secondary beam; 220, first side plate; 230, second side plate; 240, second assembly space; 250, docking plate; 300, passive unit; 400, active unit. DETAILED DESCRIPTION

[0026] In the following description, for purposes of explanation and not limitation, specific details such as particular system structures and technologies are set forth in order to provide a thorough understanding of examples of the present disclosure. However, it will be apparent to those skilled in the art that the present disclosure may be practiced in other examples that depart from these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods are omitted so as not to obscure the description of the present disclosure with unnecessary details.

[0027] In order to more clearly illustrate the examples of the present disclosure or the technical solutions in the prior art, specific embodiments of the present disclosure will be described below with reference to the accompanying drawings. Apparently, the accompanying drawings in the following description show merely some examples of the present disclosure, and a person of ordinary skill in the art may still obtain other accompanying drawings and other embodiments based on these accompanying drawings without creative efforts.

[0028] In order to simplify the drawings, only the parts related to the present disclosure are schematically shown in the drawings, and they do not represent the actual structure of the product. In addition, in order to make the drawings concise and easy to understand, only one of the components having the same structure or function is schematically illustrated in some drawings, or only one of them is marked. Herein, "a" means not only "only this one", but also "more than one".

[0029] It should be further understood that the term "and / or" used in the specification and the appended claims of this present disclosure refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0030] In this document, it should be noted that, unless otherwise expressly specified and limited, the terms "mounted," "connected," and "coupled" should be understood broadly. For example, it may be fixedly connected, detachably connected, integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected through an intermediate medium, or an internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present disclosure can be understood according to specific situations.

[0031] In the examples shown in the drawings, indications of direction (such as up, down, left, right, front and back) are used to explain the structure and movement of various components of the present disclosure, not absolute but relative. These descriptions are appropriate when the components are in the positions shown in the drawings. If the description of the positions of these components changes, the indications of these directions also change accordingly.

[0032] In addition, in the descriptions of this present disclosure, the terms "first", "second", etc., are merely used for distinguishing descriptions, and cannot be understood as an indication or implication of relative importance.

[0033] According to a specific example provided by the present disclosure, referring to FIG. 1 to FIG. 7, an antenna cover may specifically include a housing 100 having an opening 110 and a cover plate 200 covering the opening 110 of the housing 100. In this antenna cover, the housing 100 and the cover plate 200 jointly form a first assembly space 160 for fixing the passive unit 300, and a second assembly space 240 for fixing the active unit 400 is provided on the side of the cover 200 back from the first assembly space 160. A periodic circuit 211 is provided in a region on a side of the cover plate 200 facing the first assembly space 160 and at least corresponding to the second assembly space 240, to form a frequency selective surface. Specifically, the periodic circuit 211 includes frame thin lines and toothed cross-finger lines in a parallel resonant structure. The frame thin lines introduce a parallel inductor, and the toothed cross-finger lines introduce a parallel capacitor. The periodic circuit 211 is equivalent to an open circuit when the active unit 400 is operating in a high-frequency working frequency band, and the parallel capacitor-inductor circuit is in a resonance state. In addition, the periodic circuit 211 has a band-pass characteristic in a resonant frequency band, and a band-stop characteristic outside the resonant frequency band. In this way, a frequency selective surface can be formed on the cover plate 200, so that the antenna cover has a frequency selection function. The antenna cover has a wave-transparent characteristic to the high-frequency signals emitted by the active unit 400, constituting an open circuit with the high-frequency signals, and constitutes a ground structure to the low-frequency signals emitted by the passive unit 300, prohibiting the low-frequency signals from penetrating.

[0034] In this example, by disposing the periodic circuit on the side of the cover plate 200 facing the first assembly space 160, the periodic circuit 211 can be better protected. The periodic circuit is located within the first assembly space 160 and is protected from air, moisture, or dust in an external environment, for a long service life.

[0035] In addition, this example further proposes to dispose the periodic circuit 211 in a region of the cover plate 200 at least corresponding to the second assembly space 240. Because the cover 200 is provided with the passive unit 300 and the active unit 400 on two sides of the region corresponding to the second assembly space 240, frequency selection can be performed on the passive unit 300 and the active unit 400, to avoid mutual interference between the high-frequency signal and the low-frequency signal. If the region of the cover plate 200 corresponding to the second assembly space 240 is not provided with the periodic circuit or only partially provided with the periodic circuit, the low-frequency signal emitted by the passive unit 300 and the high-frequency signal emitted by the active unit 400 would be interfered, thereby affecting the use performance of the entire antenna.

[0036] Therefore, in this example, the periodic circuit 211 is disposed in the region on the side of the cover plate 200 facing the first assembly space 160 and at least corresponding to the second assembly space 240, so that the active unit 400 is disposed on the side of the cover plate 200 back from the first assembly space 160 without affecting the low-frequency reflection and high-frequency wave-transparent efficiency, thereby reducing the total thickness of the antenna cover. In addition, the example adopts one layer of antenna cover having a frequency selective surface, instead of the multilayer cascade structure in the existing technology, optimizing and streamlining the structural setup, improving assembly efficiency, and realizing lightweight production.

[0037] In actual production, the user may dispose all or part of the periodic circuit 211 on the side of the cover plate 200 facing the first assembly space 160 according to actual needs, as long as it is ensured that the cover plate 200 can perform frequency selection on the passive unit 300 and the active unit 400, which will not be repeated here and are all within the protection range of the present disclosure.

[0038] Specifically, the periodic circuit 211 may be a unit formed from a pattern of any of the metals such as gold, silver, copper, aluminium, etc., and is preferably fixed to the cover plate 200 by selective electroplating, etching, printing or attaching, etc., which will not be repeated herein, and are all within the protection range of the present disclosure. Specifically, referring to FIG. 2, FIG. 3 and FIG. 6, the cover plate 200 includes a body 210, a first side plate 220, and a second side plate 230. The first side plate 220 and the second side plate 230 are both disposed on the side of the body 210 back from the first assembly space 160, and together with the body 210 form a second assembly space 240 for fixing the active unit 400.

[0039] In this example, the periodic circuit 211 is disposed on the side of the body 210 facing the first assembly space 160, so that the cover plate 200 better performs frequency selection on the active unit and the passive unit 300. Of course, the setting in which the periodic circuit 211 is located in the first assembly space 160 also provides better protection from the influence of air, moisture or dust in the external environment, and more stable operation.

[0040] Preferably, referring to FIG. 1 to FIG. 3 and FIG. 6, the body 210 of the cover plate 200 is rectangular in shape, and the first side plate 220 and the second side plate 230 are disposed opposite to each other. The top of the first assembly space 160 is provided with two mounting racks 120, which are respectively located on the sides of the first side plate 220 and the second side plate 230 away from each other. In this example, the ends of the first side plate 220 and the second side plate 230 away from the body 210 are both provided with docking plates 250 for docking the mounting racks 120.

[0041] Specifically, the mounting racks 120 and the docking plates 250 may be fixedly connected by using a fastener to cover the cover plate 200 at the opening 110 of the housing 100. In this example, the first side plate 220 and the second side plate 230 are supported by the mounting racks 120 and the housing 100, to prevent the cover plate 200 from being deformed due to bearing of the active unit 400, and improve the deformation resistance and structural strength of the cover plate 200, thereby protecting the periodic circuit 211 on the cover plate 200 to a certain extent, so that the frequency selection function of the antenna cover can function for a long time and stably with a long service life and good performance.

[0042] Further, referring to FIG. 1, FIG. 3 and FIG. 4, at least one first reinforcing member 130 is disposed between the mounting rack 120 disposed on the first side plate 220 and the mounting rack 120 disposed on the second side plate 230. The first reinforcing member 130 includes a first main beam 131, a first leg 132 and a second leg 133 respectively disposed at two ends of the first main beam 131. The first leg 132 is configured to connect the first main beam 131 and the mounting rack 120 disposed on the first side plate 220. The second leg 133 is configured to connect the first main beam 131 and the mounting rack 120 disposed on the second side plate 230.

[0043] In this example, the first main beam 131, the first leg 132, and the second leg 133 together form an arch bridge structure. When the body of the cover plate 200 is deformed by force, the first side plate 220, the second side plate 230, and the docking plate 250 thereon will drive the mounting rack 120 to deform together. Specifically, if the first side plate 220 and the second side plate 230 tend to move away from each other under the deformation, ends of the two mounting racks 120 away from the body 210 may tend to move close to each other, so that the first leg 132 and the second leg 133 tend to move close to each other. In this way, the first main beam 131 can apply pressure to the first leg 132 and the second leg 133 to prevent the first leg 132 and the second leg 133 from moving close to each other, thereby preventing the first side plate 220, the second side plate 230, and the docking plates 250 from deforming, and further preventing the body 210 of the cover plate 200 from being deformed by force. If the first side plate 220 and the second side plate 230 tend to approach each other under the deformation, the ends of the two mounting racks 120 away from the body 210 of the cover plate 200 tend to move away from each other, so that the first leg 132 and the second leg 133 tend to move away from each other. In this example, the first main beam 131 may also prevent the first leg 132 and the second leg 133 from continuing to move away from each other.

[0044] In this example, by providing the first reinforcing member 130, the structural strength and stability of the two mounting racks 120 are ensured, the structural strength and structural stability of the cover plate 200 are further improved, the problems of low frequency selective surface rigidity and high overall brittleness in the existing technology are effectively solved, the stable operation of the frequency selective surface on the cover plate 200 is ensured, and the service performance and service life of the antenna cover are greatly improved.

[0045] In the example, the first leg 132 and the second leg 133 may be respectively fixed to the sides of the two mounting racks 120 facing away from the body 210 of the cover plate 200, or respectively fixed to the sides of the two mounting racks 120 close to each other, or respectively fixed to the sides of the two mounting racks 120 facing away from each other, etc., which are not repeated herein and are all within the protection range of the present disclosure.

[0046] Preferably, the first main beam 131, the first leg 132, and the second leg 133 are integrally formed, so that no separate assembly is required, and the installation is fast and the structure is strong.

[0047] Further, referring to FIG. 3 and FIG. 4, a second main beam 212 is disposed on a side of the body 210 of the cover plate 200 facing the first assembly space 160. One end of the second main beam 212 is fixedly connected to the mounting rack 120 provided on the first side plate 220, and the other end the second main beam 212 is fixedly connected to the mounting rack 120 provided on the second side plate 230. The second main beam 212 can also play a certain supporting role, improve the structural strength and structural stability of the cover plate 200 to a certain extent, and prevent the periodic circuit 211 from being damaged due to deformation of the cover plate 200.

[0048] Preferably, referring to FIG. 3 and FIG. 4, the second main beam 212 and the second reinforcing member 140 are arranged in one-to-one correspondence, and both ends of the second main beam 212 are provided with secondary beams 213 for docking the mounting racks 120. In this example, the first reinforcing member 130 in the shape of an arch bridge, together with the second main beam 212 and the two secondary beams 213, form a ring structure, which can further prevent the first side plate 220, the second side plate 230, and the docking plates 250 from being deformed by force, so as to keep the structural strength and structural stability of the antenna cover in an optimal state, avoiding that the periodic circuit 211 is damaged due to the deformation of the body 210 of the cover plate 200, and substantially greatly improving the service performance and service life of the antenna cover.

[0049] Referring to FIG. 1 to FIG. 3 and FIG. 5, in order to further improve the structural strength and stability of the two mounting racks 120 to increase the deformation resistance of the cover plate 200, in a specific example, at least one second reinforcing member 140 is disposed between the mounting rack 120 disposed on the first side plate 220 and the mounting rack 120 disposed on the second side plate 230. The second reinforcing member 140 includes a third main beam 141, a third leg 142 and a fourth leg 143 respectively disposed at two ends of the third main beam 141. The third leg 142 is configured to connect the third main beam 141 and the mounting rack 120 disposed on the first side plate 220. The fourth leg 143 is configured to connect the third main beam 141 and the mounting rack 120 disposed on the second side plate 230. At least one passive unit 300 may be fixed on a side of the third main beam 141 back from the cover plate 200.

[0050] In this example, the third main beam 141, the third leg 142, and the fourth leg 143 together form an arch bridge structure. On one hand, the second reinforcing member 140 formed by the third main beam 141, the third leg 142, and the fourth leg 143 can cooperate with the first reinforcing member 130 and the second main beam 212 to further improve the structural strength of the antenna cover and ensure the long-term and stable operation of the periodic circuit 211. On the other hand, this arrangement enables the third main beam 141 to fix the passive unit 300 in the first assembly space 160, while prevents the passive unit 300 from being squeezed by an external force or other structures, thereby improving the service life of the passive unit 300, and making the overall structural arrangement of the antenna cover more reasonable and practical.

[0051] In an example, referring to FIG. 1, the length of the mounting racks 120 is adapted to the length of the first assembly space 160. In addition, there are multiple second reinforcing members 140 capable of fixing the passive unit 300, which are sequentially arranged along the length direction of the mounting racks 120. In some examples, in actual production, the length of the mounting racks 120 and the number of the second reinforcing members 140 may be flexibly set according to actual needs, which is not limited herein and falls within the protection range of the present disclosure.

[0052] Preferably, the third main beam 141, the third leg 142, and the fourth leg 143 are integrally formed, so that no separate assembly is required, and the installation is fast and the structure is strong.

[0053] Considering that the second reinforcing member 140 further needs to carry the passive unit 300, in an example, there is one third main beam 141 in each second reinforcing member 140, and the area of the transverse cross section is large, so that four corners of the passive unit 300 can be all fixed to the first main beam 131 by fasteners.

[0054] Referring to FIG. 3 and FIG. 5, in one example, the number of the third main beams 141 in each second reinforcing member 140 may also be two, and the area of the transverse cross section is small. In this example, the four corners of the passive unit 300 may be fixed to the two third main beams 141 in pairs. In this example, while the fixing effect of the second reinforcing member 140 on the passive unit 300 is not affected, the weight of the overall structure, the material consumption, and the production cost are reduced, and the economy is extremely efficient, which is beneficial to the lightweight production of the antenna cover.

[0055] By contrast, referring to FIG. 3 and FIG. 5, since the third main beam 141 needs to bear the weight of the passive unit 300 while providing stable support for the body 210 of the cover plate 200, the third leg 142 and the fourth leg 143 for connecting the third main beam 141 and the fixing racks should also have a relatively stable fixing function.

[0056] In this way, in one example, the number of the third leg 142 in each second reinforcing member 140 is one, and the area of the transverse cross section is large. The number of the fourth leg 143 in each second reinforcing member 140 is one, and the area of the transverse cross section is large.

[0057] In one example, in the actual production, the number of the third leg 142 in each second reinforcing member 140 is two, and the area of the transverse cross section is small. The number of the fourth leg 143 in each second reinforcing member 140 is two, and the area of the transverse cross section is small. In this way, not only the fixing effect of the third leg 142 and the fourth leg 143 is ensured, but also the weight of the overall structure, the material consumption, and the production cost are reduced, and the economy is extremely efficient, which is beneficial to the lightweight production of the antenna cover.

[0058] Specifically, in the present example, the third leg 142 and the fourth leg 143 may be respectively fixed to the sides of the two mounting racks 120 facing away from the body 210 of the cover plate 200, or respectively fixed to the sides of the two mounting racks 120 close to each other, or respectively fixed to the sides of the two mounting racks 120 facing away from each other, etc., which will not be repeated herein and are all within the protection range of the present disclosure.

[0059] Further, referring to FIG. 5, each second reinforcing member 140 is provided with at least one third reinforcing member 150. The third reinforcing member 150 includes a fourth main beam 151 and a fifth leg 152 and a sixth leg 153 respectively disposed at two ends of the fourth main beam 151. The fifth leg 152 is configured to connect the fourth main beam 151 and the third leg 142. The sixth leg 153 is configured to connect the fourth main beam 151 and the fourth leg 143. In this example, the fourth main beam 151, the fifth leg 152 and the sixth leg 153 also jointly form an arch bridge structure, which further enhances the supporting of the second reinforcing member 140 on the cover plate 200 and the fixing and protection on the passive unit 300, so that the structural strength and structural stability of the antenna cover are better.

[0060] Specifically, referring to FIG. 5, each second reinforcing member 140 is provided with two third reinforcing members 150, which are symmetrically disposed on two sides of the second reinforcing member 140, so that the second reinforcing member 140 is stressed more uniformly, and has better structural strength and bearing capacity, thereby improving the structural strength and structural stability of the antenna cover to some extent.

[0061] In this example, the fifth leg 152 may be fixed to a side of the third leg 142 facing the fourth leg 143, or may be fixed to a side of the third leg 142 back from the fourth leg 143, or may be fixed to a side of the third leg 142 away from the other fifth leg 152. Correspondingly, the sixth leg 153 may be fixed to a side of the fourth leg 143 facing the third leg 142, or may be fixed to a side of the fourth leg 143 back from the third leg 142, or may be fixed to a side of the fourth leg 143 away from the other sixth leg 153. In actual productions, the specific arranged positions of the fifth leg 152 and the sixth leg 153 may be flexibly changed according to actual conditions, which will not be repeated here, and all fall within the protection range of the present disclosure.

[0062] Preferably, the fourth main beam 151, the fifth leg 152 and the sixth leg 153 are integrally formed, eliminating the need for separate assembly, providing fast installation and high structural strength.

[0063] It should be noted that, in the foregoing several examples, because the first reinforcing member 130 does not need to bear a load, the areas of the transverse cross sections of the first main beam 131, the first leg 132, and the second leg 133 do not need to be enlarged, which may be set normally. There is no need to provide two first main beams 131, or two first legs 132, or two second legs 133 in quantity. It is sufficient to set up a setting that ensures that the cover 200 body 210 plays an effective supporting role, which is conducive to the lightweight production of the overall structure.

[0064] Correspondingly, since the third reinforcing member 150 also does not need to bear weight, the areas of the transverse cross sections of the fourth main beam 151, the fifth leg 152 and the sixth leg 153 do not need to be enlarged, which may be set normally. There is no need to provide two fourth main beams 151, or two fifth legs 152, or two sixth legs 153 in quantity. It is sufficient to set up a setting that can assist in supporting the second reinforcing member 140, which is conducive to the lightweight production of the overall structure.

[0065] Specifically, the mounting rack 120 mentioned in the above examples is preferably hollow, and the transverse section of the mounting rack 120 is rectangular.

[0066] Preferably, the body 210, the first side plate 220, and the second side plate 230 of the cover plate 200 are integrally formed, and the base materials of the body 210, the first side plate 220 and the second side plate 230 of the cover plate 200 are all dielectric materials, including one or more of fiber / resin composite materials, flexible plastic films, etc., so as to solve the problems of poor surface rigidity and high brittleness of frequency selective surface in the prior art.

[0067] The present disclosure further provides an antenna, including an active unit 400, a passive unit 300, and the antenna cover provided in any of the above examples.

[0068] In the above examples, the description of each example has its own emphasis, and for a part not described or recorded in detail in a certain example, reference may be made to the related description of other examples.

[0069] It should be noted that the above examples may be freely combined as required. The above are only preferred examples of the present disclosure, and it should be noted that those skilled in the art can also make several improvements and modifications without departing from the principle of the present disclosure, and these improvements and modifications should also be considered as the protection range of the present disclosure.

Examples

Embodiment Construction

[0026]In the following description, for purposes of explanation and not limitation, specific details such as particular system structures and technologies are set forth in order to provide a thorough understanding of examples of the present disclosure. However, it will be apparent to those skilled in the art that the present disclosure may be practiced in other examples that depart from these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods are omitted so as not to obscure the description of the present disclosure with unnecessary details.

[0027]In order to more clearly illustrate the examples of the present disclosure or the technical solutions in the prior art, specific embodiments of the present disclosure will be described below with reference to the accompanying drawings. Apparently, the accompanying drawings in the following description show merely some examples of the present disclosure, and a person of ordin...

Claims

1. An antenna cover, comprising: a housing having an opening and a cover plate covering the opening, wherein the housing and the cover plate jointly form a first assembly space for fixing a passive unit; a side of the cover plate back from the first assembly space is provided with a second assembly space for fixing an active unit, and a periodic circuit is disposed on a region on a side of the cover plate facing the first assembly space and at least corresponding to the second assembly space to form a frequency selective surface.

2. The antenna cover according to claim 1, wherein the cover plate comprises a body, a first side plate, and a second side plate; the first side plate and the second side plate are both disposed on a side of the body back from the first assembly space, and the first side plate and the second side plate together with the body form the second assembly space for fixing the active unit; and the periodic circuit is disposed on the body.

3. The antenna cover according to claim 2, wherein the body has a rectangular structure, and the first side plate and the second side plate are disposed opposite to each other; two mounting racks are provided at top of the first assembly space, and the two mounting racks are respectively located on sides of the first side plate and the second side plate away from each other; and a docking plate for docking against a mounting rack is provided on an end of each of the first side plate and the second side plate away from the body.

4. The antenna cover according to claim 3, wherein at least one first reinforcing member is disposed between the mounting rack disposed on the first side plate and the mounting rack disposed on the second side plate; and the first reinforcing member comprises a first main beam, and a first leg and a second leg respectively disposed at two ends of the first main beam, the first leg is configured to connect the first main beam and the mounting rack disposed on the first side plate, and the second leg is configured to connect the first main beam and the mounting rack disposed on the second side plate.

5. The antenna cover according to claim 4, wherein a second main beam is provided on a side of the body facing the first assembly space; and one end of the second main beam is fixedly connected to the mounting rack provided on the first side plate, and the other end of the second main beam is fixedly connected to the mounting rack provided on the second side plate.

6. The antenna cover according to any one of claims 1 to 5, wherein at least one second reinforcing member is disposed between the mounting rack disposed on the first side plate and the mounting rack disposed on the second side plate; the second reinforcing member comprises a third main beam, and a third leg and a fourth leg respectively disposed at two ends of the third main beam, the third leg is configured to connect the third main beam and the mounting rack disposed on the first side plate, and the fourth leg is configured to connect the third main beam and the mounting rack disposed on the second side plate; and at least one passive unit is fixed on a side of the third main beam back from the cover plate.

7. The antenna cover according to claim 6, wherein each of the at least one second reinforcing member is provided with at least one third reinforcing member; and the third reinforcing member comprises a fourth main beam, and a fifth leg and a sixth leg respectively disposed at two ends of the fourth main beam, the fifth leg is configured to connect the fourth main beam and the third leg, and the sixth leg is configured to connect the fourth main beam and the fourth leg.

8. The antenna cover according to any one of claims 2 to 5, wherein the body, the first side plate, and the second side plate are integrally formed and are all made of a dielectric material.

9. The antenna cover according to any one of claims 3 to 5, wherein the mounting rack is hollow; and / or a transverse section of the mounting rack is rectangular.

10. An antenna cover, comprising: an active unit, a passive unit, and the antenna cover according to any one of claims 1 to 9.

Images