Microwave antenna support and microwave antenna

Abstract

The utility model provides a microwave antenna support and a microwave antenna, and belongs to the technical field of antennae, the microwave antenna support comprises a housing, a first fixing member and a second fixing member; the shell is sleeved on a feed source waveguide tube of the microwave antenna, and the bottom of the shell is fixedly connected with an auxiliary reflecting surface of the microwave antenna; the first fixing piece is fixedly connected with a supporting structure located at a tube opening of the feed source waveguide tube, and the first fixing piece is arranged between the shell and the auxiliary reflecting surface so as to support the shell; and the second fixing piece is positioned above the top of the shell so that the shell is fixed on the feed source waveguide tube and can be stably fixed on the outer wall of the waveguide tube.

Description

Technical Field

[0001] This application relates to the technical field of antennas, and particularly to a microwave antenna bracket and a microwave antenna. Background Art

[0002] The parabolic antenna is one of the earliest types of antennas in the antenna-feeder system in the communication field. The parabolic antenna reflects the electromagnetic waves emitted by the feed located at the focus forward and keeps them in phase, thereby forming a highly directional beam, or converging the parallel beam to the focus.

[0003] In the prior art, the feed in the parabolic antenna includes structures such as a waveguide, a metal bracket, and a sub-reflector. Among them, the metal bracket is arranged on the outer wall of the waveguide and is used to support the sub-reflector. However, in the way of using a metal fixed bracket, on the one hand, fixing parts such as screws are required. Due to the too thin wall of the waveguide, the screw fixing scheme cannot well stably arrange the metal fixed bracket on the outer wall of the waveguide; on the other hand, metal will reflect electromagnetic waves, and in order to pursue stability, the metal parts of the metal bracket are relatively thick, which will affect the antenna performance, such as a decrease in gain, an increase in sidelobe level, and an increase in return loss.

[0004] Therefore, it is necessary to improve the existing microwave antenna bracket and provide a microwave antenna bracket that can be stably fixed to the outer wall of the waveguide. Summary of the Utility Model

[0005] The purpose of the present utility model is to solve at least one of the technical problems existing in the prior art, and provide a microwave antenna bracket and a microwave antenna that can be stably fixed to the outer wall of the waveguide.

[0006] To achieve the above object, in a first aspect, an embodiment of the present application proposes a microwave antenna bracket, including: a housing, a first fixing member, and a second fixing member;

[0007] The housing is sleeved on the feed waveguide of the microwave antenna and the bottom of the housing is fixedly connected to the sub-reflector of the microwave antenna;

[0008] The first fixing member is fixedly connected to the support structure at the pipe orifice of the feed waveguide, and the first fixing member is arranged between the housing and the sub-reflector to support the housing;

[0009] The second fixing member is located above the top of the housing to fix the housing on the feed waveguide.

[0010] A microwave antenna support provided by an embodiment of the present utility model has at least the following beneficial effects: The support structure at the nozzle of the feed waveguide is used to support the first fixing member, so that the first fixing member is fixed above the support structure. The outer shell is sleeved on the feed waveguide of the microwave antenna and the bottom of the outer shell is fixedly connected to the sub-reflector of the microwave antenna. It is supported by the first fixing member inside the outer shell, so that the outer shell cannot move downward. A second fixing member is arranged above the top of the outer shell to press the outer shell. Through the combined action of the first fixing member and the second fixing member, the outer shell can be stably fixed on the pipe wall of the feed waveguide of the microwave antenna without being fixed by screws.

[0011] In some embodiments, the outer shell is hemispherical.

[0012] In some embodiments, the first fixing member is circular, and the support structure includes a first support structure and a second support structure connected to the first support structure. The first fixing member is sleeved on the first support structure.

[0013] In some embodiments, the second fixing member includes a pressing block and a cylindrical structure connected to the pressing block. The pressing block is located above the top of the outer shell, and the cylindrical structure is inserted into the gap between the outer shell and the feed waveguide and the gap between the support structure and the feed waveguide.

[0014] In some embodiments, the pressing block is circular.

[0015] In some embodiments, the cylindrical structure includes a first cylindrical structure connected to the pressing block and a second cylindrical structure connected to the first cylindrical structure, and the diameter of the first cylindrical structure is larger than that of the second cylindrical structure. Among them, the first cylindrical structure is inserted into the gap between the outer shell and the feed waveguide, and the second cylindrical structure is inserted into the gap between the support structure and the feed waveguide.

[0016] In some embodiments, a connecting block with the same structure as the pressing block is arranged at the top of the outer shell, and the connecting block is connected to the top of the outer shell.

[0017] In some embodiments, in the first cylindrical structure, a first groove is arranged in the area where the connecting block covers the first cylindrical structure, and airtight glue is injected into the first groove.

[0018] In some embodiments, in the second cylindrical structure, a second groove is arranged in the area where the support structure covers the second cylindrical structure, and airtight glue is injected into the second groove.

[0019] In a second aspect, an embodiment of the present application provides a microwave antenna, including a feed waveguide, a sub-reflector, a support structure, and the microwave antenna bracket according to any one of the first aspect. The support structure is located at the nozzle of the feed waveguide, and the feed waveguide is connected to the sub-reflector through the microwave antenna bracket. Description of the Drawings

[0020] The drawings are used to provide a further understanding of the technical solutions of the present invention, and constitute a part of the description. They are used together with the embodiments of the present invention to explain the technical solutions of the present invention, and do not constitute a limitation to the technical solutions of the present invention.

[0021] The present invention will be further described below with reference to the drawings and embodiments;

[0022] Figure 1 is an exploded view of a microwave antenna provided by an embodiment of the present invention;

[0023] Figure 2 is a partial structural schematic diagram of a microwave antenna provided by an embodiment of the present invention;

[0024] Figure 3 is an overall structural schematic diagram of a microwave antenna provided by an embodiment of the present invention. Detailed Embodiments

[0025] This part will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the drawings. The role of the drawings is to supplement the description of the text part of the specification, enabling people to intuitively and vividly understand each technical feature and the overall technical solution of the present invention. However, it should not be construed as a limitation to the protection scope of the present invention.

[0026] In the description of the present invention, if the first and second are described only for the purpose of distinguishing technical features, they should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence of the indicated technical features.

[0027] In the description of the present invention, unless otherwise clearly defined, words such as "set", "installed", and "connected" should be understood in a broad sense. Those skilled in the art can reasonably determine the specific meanings of the above words in the present invention in combination with the specific content of the technical solution.

[0028] The parabolic antenna is one of the earliest antenna types in the antenna system of the communication field. The parabolic antenna reflects the electromagnetic waves emitted by the feed located at the focus forward and keeps them in phase, thus forming a highly directional beam, or converges the parallel beam to the focus.

[0029] In the prior art, the feed source in a parabolic antenna includes structures such as a waveguide, a metal bracket, and a sub-reflector. Among them, the metal bracket is disposed on the outer wall of the waveguide and is used to support the sub-reflector. However, in the way of using a metal fixing bracket, on the one hand, fixing parts such as screws are required. Since the wall thickness of the waveguide is too thin, the screw fixing scheme cannot well stably set the metal fixing bracket on the outer wall of the waveguide. On the other hand, metals will reflect electromagnetic waves, and in order to pursue stability, the metal parts of the metal bracket are relatively thick, which will affect the antenna performance, such as a decrease in gain, an increase in sidelobe level, and an increase in return loss.

[0030] Based on this, the embodiments of the present invention provide a microwave antenna bracket and a microwave antenna, which can be stably fixed on the outer wall of the waveguide.

[0031] The following further elaborates on the embodiments of the present invention in conjunction with the accompanying drawings.

[0032] Refer to Figures 1-3 In a first aspect, the present invention provides a microwave antenna bracket, including: a housing 110, a first fixing member 200, and a second fixing member 300;

[0033] The housing 110 is sleeved on the feed waveguide 500 of the microwave antenna, and the bottom of the housing 110 is fixedly connected to the sub-reflector 400 of the microwave antenna;

[0034] The first fixing member 200 is fixedly connected to a support structure 600 at the pipe orifice of the feed waveguide 500, and the first fixing member 200 is disposed between the housing 110 and the sub-reflector 400 to support the housing 110;

[0035] The second fixing member 300 is located above the top of the housing 110 to fix the housing 110 on the feed waveguide 500.

[0036] According to a microwave antenna bracket provided by an embodiment of the present invention, the support structure 600 at the pipe orifice of the feed waveguide 500 is used to support the first fixing member 200, so that the first fixing member 200 is fixed above the support structure 600. The housing 110 is sleeved on the feed waveguide 500 of the microwave antenna, and the bottom of the housing 110 is fixedly connected to the sub-reflector 400 of the microwave antenna. The housing 110 is supported inside through the first fixing member 200, so that the housing 110 cannot move downward. A second fixing member 300 is disposed above the top of the housing 110 to press the housing 110. Through the combined action of the first fixing member 200 and the second fixing member 300, the housing 110 can be stably fixed on the pipe wall of the feed waveguide 500 of the microwave antenna without using screws for fixing.

[0037] It should be noted that in the feed waveguide 500 of the microwave antenna, a number of third grooves 510 are provided in the area connected to the bracket. Specifically, third grooves 510 are provided in the area where the second fixing member 300 covers the feed waveguide 500, and third grooves 510 are also provided in the area where the support structure 600 covers the feed waveguide 500, and airtight glue is injected into the third grooves 510.

[0038] It can be understood that after the airtight glue seals the joints between the second fixing member 300 and the support structure 600 and the feed waveguide 500, the airtight effect between the second fixing member 300 and the support structure 600 and the feed waveguide 500 is enhanced, making the support structure 600 and the second fixing member 300 meet the airtightness requirements. Compared with the metal bracket, it can better resist the influence of salt spray, improving the stability of the antenna operation while also increasing the service life of the antenna.

[0039] Preferably, the material of the outer shell 110 is polyphenylene ether.

[0040] It can be understood that the material of the outer shell 110 of the bracket is polyphenylene ether. Compared with metal, which cannot transmit electromagnetic waves and will cause surface current to cause secondary radiation, polyphenylene ether is a medium with a dielectric constant close to that of air, causing less scattering and reflection of electromagnetic waves and having less impact on the performance of the antenna. Compared with metal materials, its manufacturing cost is lower.

[0041] It should be noted that the feed waveguide 500 of the microwave antenna can be a circular waveguide or a rectangular waveguide.

[0042] It can be understood that the outer shell 110, the first fixing member 200, the support structure 600, and the second fixing member 300 are all sleeved on the feed waveguide 500, and the socket interfaces of the outer shell 110, the first fixing member 200, the support structure 600, and the second fixing member 300 are appropriately adjusted according to the shape of the feed waveguide 500.

[0043] It should be noted that the first fixing member 200 can be of an irregular shape, and a plurality of support points in contact with the outer shell 110 are provided on the first fixing member 200 to support the outer shell 110 to prevent it from sagging.

[0044] In some embodiments, the outer shell 110 is hemispherical.

[0045] It can be understood that the hemispherical shape of the outer shell 110 helps to disperse the influence of external environmental factors such as wind pressure and rain on the antenna, while enhancing the aesthetics and aerodynamic performance of the structure.

[0046] In some embodiments, the first fixing member 200 is annular, the support structure 600 includes a first support structure 610 and a second support structure 620 connected to the first support structure 610, and the first fixing member 200 is sleeved on the first support structure 610.

[0047] It should be noted that the diameter of the second support structure 620 is smaller than that of the first support structure 610, and the diameter of the socket of the first fixing member 200 is larger than the diameter of the second support structure 620 and smaller than the diameter of the first support structure 610.

[0048] It can be understood that the first fixing member 200 is annular and the outer shell 110 is hemispherical. The annular design of the first fixing member 200 enables the first fixing member 200 to evenly distribute the force to the hemispherical outer shell 110, avoiding the problem of local stress concentration, thereby more effectively supporting the hemispherical outer shell 110 and preventing it from deforming or shifting.

[0049] In some embodiments, the second fixing member 300 includes a pressing block 310 and a cylindrical structure 320 connected to the pressing block 310. The pressing block 310 is located above the top of the outer shell 110, and the cylindrical structure 320 is inserted into the gaps between the outer shell 110 and the feed waveguide 500 and between the support structure 600 and the feed waveguide 500.

[0050] It should be noted that the area of the pressing block 310 in the horizontal direction is larger than the area of the socket of the outer shell 110. When the cylindrical structure 320 is inserted into the gaps between the outer shell 110 and the support structure 600 and the feed waveguide 500, the pressing block 310 is located above the top of the outer shell 110 and provides a downward pressure to prevent the outer shell 110 from moving upward.

[0051] In some embodiments, the pressing block 310 is annular.

[0052] It should be noted that the pressing block 310 is annular, and the outer diameter of the pressing block 310 is larger than the outer diameter of the cylindrical structure 320. When the cylindrical structure 320 is inserted into the gaps between the outer shell 110 and the support structure 600 and the feed waveguide 500, the pressing block 310 is located above the top of the outer shell 110 and provides a downward pressure to prevent the outer shell 110 from moving upward.

[0053] In some embodiments, a connecting block 120 having the same structure as the pressing block 310 is provided at the top of the outer shell 110, and the connecting block 120 is connected to the top of the outer shell 110.

[0054] It should be noted that when the pressing block 310 is annular and the connecting block 120 is also annular, the outer diameter of the pressing block 310 is greater than or equal to the outer diameter of the connecting block 120, and the inner diameter of the connecting block 120 is slightly larger than the diameter of the cylindrical structure 320, so that the cylindrical structure 320 of the second fixing member 300 can be inserted into the gap between the housing 110 and the feed waveguide 500.

[0055] In some embodiments, the cylindrical structure 320 includes a first cylindrical structure 321 connected to the pressing block 310 and a second cylindrical structure 322 connected to the first cylindrical structure 321, and the diameter of the first cylindrical structure 321 is greater than the diameter of the second cylindrical structure 322. Among them, the first cylindrical structure 321 is inserted into the gap between the housing 110 and the feed waveguide 500, and the second cylindrical structure 322 is inserted into the gap between the support structure 600 and the feed waveguide 500.

[0056] It should be noted that when the feed waveguide 500 of the microwave antenna is a circular waveguide, the cylindrical structure 320 is composed of a first cylindrical structure 321 and a second cylindrical structure 322 with two different diameters and both being cylindrical.

[0057] In some embodiments, in the first cylindrical structure 321, a first groove 330 is provided in the area where the connecting block 120 covers the first cylindrical structure 321, and airtight glue is injected into the first groove 330.

[0058] It can be understood that the sealing effect between the first cylindrical structure 321 and the connecting block 120 is enhanced, ensuring the stability and reliability of the entire antenna system.

[0059] In some embodiments, in the second cylindrical structure 322, a second groove 340 is provided in the area where the support structure 600 covers the second cylindrical structure 322, and airtight glue is injected into the second groove 340.

[0060] It can be understood that the sealing effect between the support structure 600 and the second cylindrical structure 322 is enhanced, ensuring the stability and reliability of the entire antenna system.

[0061] In a second aspect, the present invention provides a microwave antenna, including a feed waveguide 500, a sub-reflector 400, a support structure 600, and the microwave antenna bracket according to any one of the first aspects. The support structure 600 is located at the nozzle of the feed waveguide, and the feed waveguide 500 is connected to the sub-reflector 400 through the microwave antenna bracket.

[0062] The above has described the embodiments of the present invention in detail with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments, and various changes can be made without departing from the gist of the present invention within the knowledge scope of those of ordinary skill in the art.

Claims

1. A microwave antenna bracket, characterized in that: include: A shell, wherein the shell is sleeved on the feed waveguide of the microwave antenna and the bottom of the shell is fixedly connected to the sub-reflecting surface of the microwave antenna; A first fixing member, wherein the first fixing member is fixedly connected to a support structure located at a pipe opening of the feed waveguide, and the first fixing member is disposed between the housing and the secondary reflecting surface to support the housing; A second fixing member is located above the top of the housing to fix the housing on the feed waveguide.

2. The microwave antenna bracket according to claim 1, characterized in that: The shell is hemispherical.

3. The microwave antenna bracket according to claim 2, characterized in that: The first fixing member is in the shape of a circular ring, the supporting structure comprises a first supporting structure and a second supporting structure connected to the first supporting structure, and the first fixing member is sleeved on the first supporting structure.

4. The microwave antenna bracket according to claim 1, characterized in that: The second fixing member includes a pressing block and a columnar structure connected to the pressing block, wherein the pressing block is located above the top of the shell, and the columnar structure is inserted into the gap between the shell and the feed waveguide and the gap between the support structure and the feed waveguide.

5. The microwave antenna bracket according to claim 4, characterized in that: The pressing block is in the shape of a circular ring.

6. The microwave antenna support according to claim 4, characterized in that: The columnar structure includes a first columnar structure connected to the pressing block and a second columnar structure connected to the first columnar structure, and the caliber of the first columnar structure is larger than the caliber of the second columnar structure, wherein the first columnar structure is inserted into the gap between the outer shell and the feed waveguide tube, and the second columnar structure is inserted into the gap between the support structure and the feed waveguide tube.

7. The microwave antenna support according to claim 6, characterized in that: A connecting block having the same structure as the pressing block is arranged on the top of the shell, and the connecting block is connected to the top of the shell.

8. The microwave antenna bracket according to claim 7, characterized in that: In the first columnar structure, a first groove is provided in the area where the connection block covers the first columnar structure, and airtight glue is injected into the first groove.

9. The microwave antenna support according to claim 6, characterized in that: In the second columnar structure, a second groove is provided in the area where the support structure covers the second columnar structure, and airtight glue is injected into the second groove.

10. A microwave antenna, characterized in that: It comprises a feed waveguide, a sub-reflecting surface, a supporting structure and the microwave antenna bracket according to any one of claims 1 to 9, wherein the supporting structure is located at the pipe mouth of the feed waveguide, and the feed waveguide is connected to the sub-reflecting surface through the microwave antenna bracket.

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