Multi-beam antenna

Abstract

The invention relates to a multi-beam antenna which comprises an antenna body composed of a shell, a bottom plate, a Rotmann lens, a reflecting plate and an antenna array, the shell is fixed to the bottom plate, the reflecting plate, the Rotmann lens and the antenna array are located in the shell, and the Rotmann lens and the antenna array are arranged on the two sides of the reflecting plate respectively and connected through a shift transmission line. The Rotmann lens is positioned on one side of the reflecting plate facing the bottom plate; two fixing devices for adjusting the mounting inclination angle of the antenna body are arranged on the side surface of the antenna body; the antenna has the advantages of convenience in multi-beam coverage and light weight.

Description

Technical Field

[0001] The present invention belongs to the technical field of multi-beam antennas, and in particular relates to a multi-beam antenna. Background Art

[0002] Plate antennas are directional antennas. They are a type of mobile communication system antenna and are mainly used for outdoor signal coverage. Whether it is GSM or CDMA, plate antennas are the most commonly used and extremely important base station antennas.

[0003] In the prior art, the plate antenna has the advantages of high gain, good sector-area radiation pattern, small back lobe, convenient control of the vertical plane radiation pattern depression angle, reliable sealing performance and long service life when in use. However, due to the structure of the antenna itself, the overall weight of the antenna is heavy when in use, and multi-beam coverage cannot be achieved. Summary of the invention

[0004] The object of the present invention is to overcome the deficiencies of the prior art and provide a multi-beam antenna that is convenient for multi-beam coverage and light in weight.

[0005] The technical solution of the present invention is as follows:

[0006] A multi-beam antenna, comprising an antenna body consisting of a shell, a bottom plate, a Rotman lens, a reflector and an antenna array, wherein the shell is fixed to the bottom plate, the reflector, the Rotman lens and the antenna array are located inside the shell, the Rotman lens and the antenna array are respectively located on both sides of the reflector and connected through a transfer transmission line, and the Rotman lens is located on a side of the reflector facing the bottom plate;

[0007] Two fixing devices for adjusting the installation inclination angle of the antenna body are arranged on the side of the antenna body.

[0008] Furthermore, the fixing device includes a fixing clamp, a hinge seat fixed to the side of the antenna body, two hinged rods rotatably connected to the hinge seat and the fixing clamp respectively, and a telescopic adjustment component, the other ends of the two hinged rods are rotatably connected, and the telescopic adjustment component is connected to the two hinged rods to adjust the angle between the two hinged rods.

[0009] Furthermore, the telescopic adjustment assembly includes a telescopically adjustable guide plate, a rotating seat fixed at one end of the guide plate, a threaded seat connected to the other side of the guide plate, a threaded rod threadedly connected to the threaded seat, and a driving assembly for driving the threaded rod to rotate. The driving assembly is connected to the guide plate and is arranged on a side of the threaded seat away from the rotating seat. The rotating seat gradually moves away from the threaded seat as the guide plate is telescoped. The threaded seat and the rotating seat are independently rotated to connect the hinged rod.

[0010] Furthermore, the driving assembly includes a protective cylinder fixed on the guide plate, a rotating barrel elastically rotatably plugged on one end of the protective cylinder away from the threaded seat, a polygonal column fixed to the rotating barrel, a ratchet assembly driven by the polygonal column, and a convex ring slidably arranged in the protective cylinder, and the protective cylinder is arranged on a side of the threaded seat away from the rotating seat;

[0011] A limit plate is arranged inside the protective tube, and when the rotating barrel moves downward and contacts the limit plate, it is locked with the protective tube;

[0012] A hand wheel is inserted into the rotating barrel, and when the hand wheel is inserted into the rotating barrel, the protective cylinder is unlocked from the rotating barrel;

[0013] When the ratchet assembly can move to the convex ring, the ratchet assembly no longer transmits power to the threaded rod, the polygonal column is connected with a ratchet pawl that transmits power to the threaded rod, the transmission direction of the ratchet pawl is opposite to that of the ratchet assembly, and the threaded rod is provided with a round hole for the polygonal column to be inserted.

[0014] Furthermore, the ratchet assembly includes a ratchet fixed to a threaded rod, a rotating disk rotatably connected to the ratchet, a pawl elastically rotatably connected to the rotating disk, and a driving rod radially inserted into the ratchet, the pawl is provided with a movable groove, the driving rod is provided with a convex ball located in the movable groove, the driving rod contacts the inner wall of the protective tube, and after contacting the inner ring of the convex ring, the driving pawl does not cooperate with the ratchet, and the polygonal column is inserted into the rotating disk.

[0015] Furthermore, the convex ring is connected to a displacement plate which is slidably connected to the outside of the protective tube, and the protective tube is provided with a sliding groove.

[0016] Furthermore, inclined surfaces with triangular cross-sections are provided on both axial sides of the convex ring.

[0017] Furthermore, the protective tube is elastically plugged with a lock rod, and the rotating barrel is elastically connected with a resistance rod. When the rotating barrel contacts the limiting plate, the resistance rod can rotate coaxially with the lock rod to allow the lock rod to be inserted into the rotating barrel.

[0018] Furthermore, a telescopically adjustable protective plate is arranged on the side of the guide plate, a positioning groove is arranged on the inner side of the guide plate, a positioning plate fixed on the protective plate is inserted into the positioning groove, and the protective plate and the guide plate are pluggably connected.

[0019] Furthermore, an angle ruler located on the guide plate is axially arranged on one side of the protective tube.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. The present invention achieves the advantages of multi-beam coverage and vertical beam width through the cooperation of Rotman lens, antenna array and reflector;

[0022] 2. The present invention uses the cooperation of the telescopic adjustment component and the hinged rod to achieve the angle adjustment of the antenna body, ensuring that the angle adjustment is accurate and convenient.

[0023] In summary, the present invention has the advantages of multi-beam coverage and light weight. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 For the present invention Figure 1 Schematic diagram of the exploded structure of the antenna body;

[0026] Figure 3 For the present invention Figure 1 A schematic diagram of the structure of the telescopic adjustment component when the protective plate is removed;

[0027] Figure 4 For the present invention Figure 3 A schematic cross-sectional structure diagram of a telescopic adjustment component;

[0028] Figure 5 For the present invention Figure 4 A schematic diagram of the structure of a ratchet assembly;

[0029] Figure 6 For the present invention Figure 4 Schematic diagram of the enlarged structure of part A.

[0030] In the figure, 1. bracket; 2. fixing clamp; 3. telescopic adjustment component; 31. guide plate; 32. rotating barrel; 33. positioning groove; 34. rotating seat; 35. threaded seat; 36. protective tube; 361. sliding groove; 362. limit plate; 37. hand wheel; 371. resistance rod; 372. locking rod; 38. convex ring; 39. ratchet; 391. rotating disk; 392. driving rod; 393. pawl; 30. polygonal column; 301. angle ruler; 302. displacement plate; 303. threaded rod; 4. hinged rod; 5. hinged seat; 6. antenna body; 61. Rotman lens; 62. bottom plate; 63. shell; 64. antenna element; 65. reflecting plate. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] like Figure 1-6 As shown, a multi-beam antenna includes an antenna body 6 consisting of a shell 63, a bottom plate 62, a Rotman lens 61, a reflector 65 and an antenna array 64, wherein the shell 63 is fixed to the bottom plate 62, the reflector 65, the Rotman lens 61 and the antenna array 64 are located inside the shell 63, the Rotman lens 61 and the antenna array 64 are respectively located on both sides of the reflector 65 and are connected through a transfer transmission line, and the Rotman lens 61 is located on a side of the reflector 65 facing the bottom plate 62;

[0033] Two fixing devices for adjusting the installation angle of the antenna body 6 are arranged on the side of the antenna body 6;

[0034] When in use, the fixing device is fixed on the bracket 1, and the inclination angle of the antenna body 6 is adjusted by the fixing device. After the adjustment is completed, the signal is transmitted through the Rotman lens 61, the transmission line, and the antenna element 64;

[0035] Among them, the antenna body 6 is similar to the traditional plate-shaped wide coverage antenna. On the basis of realizing the multi-beam of the lens antenna, the difficulty of its production, transportation and installation is reduced.

[0036] Antenna element 64 adopts an antenna unit with an EBG structure, which can reduce the antenna height to 1 / 4 of the original height, greatly reducing the antenna height.

[0037] In this embodiment, the fixing device includes a fixing clamp 2, a hinge seat 5 fixed to the side of the antenna body 6, two hinged rods 4 rotatably connected to the hinge seat 5 and the fixing clamp 2 respectively, and a telescopic adjustment component 3, the other ends of the two hinged rods 4 are rotatably connected, and the telescopic adjustment component 3 is connected to the two hinged rods 4 to adjust the angle between the two hinged rods 4;

[0038] When in use, the included angle between the hinged rods 4 is adjusted by the telescopic adjustment assembly 3 , and as the included angle between the two hinged rods 4 changes, the inclination angle of the antenna body 6 is gradually adjusted, thereby ensuring the adjustment of the inclination angle of the antenna body 6 .

[0039] In this embodiment, the telescopic adjustment component 3 includes a telescopically adjustable guide plate 31, a rotating seat 34 fixed to one end of the guide plate 31, a threaded seat 35 connected to the other side of the guide plate 31, a threaded rod 303 threadedly connected to the threaded seat 35, and a driving component for driving the threaded rod 303 to rotate. The driving component is connected to the guide plate 31 and is arranged on a side of the threaded seat 35 away from the rotating seat 34. The rotating seat 34 gradually moves away from the threaded seat 35 as the guide plate 31 is extended or retracted. The threaded seat 35 and the rotating seat 34 are respectively and independently rotated to connect the hinge rod 4. The guide plate 31 is specifically formed by two U-shaped plates plugged into each other.

[0040] When in use, the driving assembly drives the threaded rod 303 to rotate. As the threaded rod 303 rotates, the threaded rod 303 gradually moves and pushes the rotating seat 34 to move. At this time, the rotating seat 34 pushes the hinged rod 4 connected to the hinged seat 5 to rotate and causes the inclination angle of the antenna body 6 to change, thereby ensuring adjustment.

[0041] In this embodiment, the driving assembly includes a protective tube 36 fixed on the guide plate 31, a rotating barrel 32 elastically rotatably plugged on the end of the protective tube 36 away from the threaded seat 35, a polygonal column 30 fixed to the rotating barrel 32, a ratchet assembly driven by the polygonal column 30, and a convex ring 38 slidably arranged in the protective tube 36, and the protective tube 36 is arranged on the side of the threaded seat 35 away from the rotating seat 34;

[0042] A limiting plate 362 is fixed in the protective tube 36, and when the rotating barrel 32 moves down to contact the limiting plate 362, it is locked with the protective tube 36;

[0043] A hand wheel 37 is inserted into the rotating barrel 32 , and when the hand wheel 37 is inserted into the rotating barrel 32 , the protective cylinder 36 is unlocked from the rotating barrel 32 ;

[0044] When the ratchet assembly can move to the convex ring 38, the ratchet assembly no longer transmits to the threaded rod 303, and the polygonal column 30 is plugged with a ratchet pawl (not shown in the figure, the ratchet pawl is the prior art) that transmits to the threaded rod 303, and the transmission direction of the ratchet pawl is opposite to that of the ratchet assembly, and the threaded rod 303 is provided with a round hole for the polygonal column 30 to be plugged in;

[0045] When in use, first displace the convex ring 38 according to the inclination angle to be adjusted, then insert the hand wheel 37 into the rotating barrel 32, at this time the rotating barrel 32 is unlocked and elastically reset, then the person turns the hand wheel 37, with the rotation of the hand wheel 37, the threaded rod 303 gradually displaces and drives the ratchet assembly to displace, when the ratchet assembly moves to the cam, the ratchet assembly no longer transmits to the threaded rod 303, at this time the angle adjustment is completed, then the person presses the threaded barrel and rotates the threaded barrel to lock the threaded barrel;

[0046] When the inclination angle needs to be adjusted and reset, the threaded barrel is unlocked and the hand wheel 37 is reversed according to the above content.

[0047] In this embodiment, the ratchet assembly includes a ratchet 39 fixed to the threaded rod 303, a rotating disk 391 rotatably connected to the ratchet 39, a pawl 393 elastically rotatably connected to the rotating disk 391, and a driving rod 392 radially plugged into the ratchet 39, a movable groove is provided on the pawl 393, and the driving rod 392 is provided with a convex ball located in the movable groove, the driving rod 392 contacts the inner wall of the protective tube 36, and after contacting the inner ring of the convex ring 38, the driving pawl 393 does not cooperate with the ratchet 39, and the polygonal column 30 is plugged into the rotating disk 391;

[0048] During use, when the driving rod 392 contacts the protective tube 36, the pawl 393 drives the ratchet 39 to rotate. When the driving rod 392 contacts the convex ring 38, as the driving rod 392 moves, the driving rod 392 pushes the pawl 393 to stop cooperating with the ratchet 39, so that the pawl 393 no longer cooperates with the ratchet 39, thereby ensuring the accuracy of the angle adjustment.

[0049] In this embodiment, the protruding ring 38 is connected to a displacement plate 302 slidably connected to the outside of the protective tube 36 through a spring and a telescopic rod. The protective tube 36 is provided with a sliding groove 361, and the telescopic rod and the spring are located in the sliding groove 361;

[0050] When in use, the displacement plate 302 drives the convex ring 38 to move, ensuring the displacement adjustment of the convex ring 38, and the displacement plate 302 is driven by the telescopic rod and the spring to always contact with the protective tube 36, ensuring the friction of the protective tube 36, avoiding pushing the convex ring 38 to move when the driving rod 392 moves.

[0051] In this embodiment, inclined surfaces with triangular cross sections are provided on both axial sides of the protruding ring 38;

[0052] When in use, the driving rod 392 can stably move to the inner ring side of the convex ring 38 through the setting of the inclined surface;

[0053] Preferably, one end of the driving rod 392 extending out of the ratchet 39 is spherical.

[0054] In this embodiment, the protective tube 36 is elastically plugged with a locking rod 372, and the rotating barrel 32 is elastically connected with a resisting rod 371. When the rotating barrel 32 contacts the limiting plate 362, the resisting rod 371 can rotate coaxially with the locking rod 372, so that the locking rod 372 is inserted into the rotating barrel 32;

[0055] When in use, the hand wheel 37 is inserted into the rotating barrel 32, and the abutting rod 371 pushes the locking rod 372 to move until the locking rod 372 is flush with the circumferential side of the rotating barrel 32. At this time, the rotating barrel 32 elastically extends so that the locking rod 372 and the abutting rod 371 are misaligned, and a person can rotate the rotating barrel 32 and drive the polygonal column 30 to rotate;

[0056] When the ratchet assembly cannot drive the threaded rod 303 to rotate, the personnel pulls the hand wheel 37 out of the rotating barrel 32 and presses the rotating barrel 32 until the locking rod 372 is inserted into the rotating barrel 32;

[0057] Preferably, a paddle is provided at one end of the rotating barrel 32 extending out of the protective tube 36 to facilitate personnel to push the rotating barrel 32 to rotate.

[0058] In this embodiment, if Figure 2As shown, a retractable and adjustable protective plate is arranged on the side of the guide plate 31, and multiple groups of plates are fixed on the inner side of the guide plate 31, and each group of plates has two plates and a positioning groove 33 is formed between the two plates. A positioning plate fixed on the protective plate is inserted into the positioning groove 33, and the protective plate and the guide plate 31 can be plugged and connected, and the protective plate is formed by plugging two connecting plates;

[0059] When in use, the positioning plate on the protective plate is inserted into the positioning groove 33 so that the protective plate is aligned with the guide plate 31, and then fixed with bolts;

[0060] Preferably, in order to ensure waterproof capability, the telescopic parts of the protective plate and the guide plate 31 and the contact parts of the protective plate and the guide plate 31 are encapsulated with seals to ensure the sealing effect and prevent the internal components from being corroded by rainwater.

[0061] In this embodiment, an angle ruler 301 located on the guide plate 31 is axially arranged on one side of the protective tube 36;

[0062] When in use, the angle to be adjusted is confirmed according to the position of the displacement plate 302 on the angle ruler 301, so as to facilitate use by personnel.

[0063] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A multi-beam antenna, characterized in that: The antenna body comprises a shell, a bottom plate, a Rotman lens, a reflector and an antenna array, wherein the shell is fixed to the bottom plate, the reflector, the Rotman lens and the antenna array are located inside the shell, the Rotman lens and the antenna array are respectively located on both sides of the reflector and connected through a transfer transmission line, and the Rotman lens is located on the side of the reflector facing the bottom plate; Two fixing devices for adjusting the installation inclination angle of the antenna body are arranged on the side of the antenna body.

2. A multi-beam antenna according to claim 1, characterized in that: The fixing device includes a fixing clamp, a hinge seat fixed to the side of the antenna body, two hinged rods rotatably connected to the hinge seat and the fixing clamp respectively, and a telescopic adjustment component, the other ends of the two hinged rods are rotatably connected, and the telescopic adjustment component is connected to the two hinged rods to adjust the angle between the two hinged rods.

3. A multi-beam antenna according to claim 2, characterized in that: The telescopic adjustment assembly includes a telescopically adjustable guide plate, a rotating seat fixed at one end of the guide plate, a threaded seat connected to the other side of the guide plate, a threaded rod threadedly connected to the threaded seat, and a driving assembly for driving the threaded rod to rotate. The driving assembly is connected to the guide plate and is arranged on a side of the threaded seat away from the rotating seat. The rotating seat gradually moves away from the threaded seat as the guide plate is extended or retracted, and the threaded seat and the rotating seat are independently rotated to connect the hinged rod.

4. A multi-beam antenna according to claim 3, characterized in that: The driving assembly includes a protective cylinder fixed on the guide plate, a rotating barrel elastically rotatably plugged on one end of the protective cylinder away from the threaded seat, a polygonal column fixed to the rotating barrel, a ratchet assembly driven by the polygonal column, and a convex ring slidably arranged in the protective cylinder, and the protective cylinder is arranged on the side of the threaded seat away from the rotating seat; A limit plate is arranged inside the protective tube, and when the rotating barrel moves downward and contacts the limit plate, it is locked with the protective tube; A hand wheel is inserted into the rotating barrel, and when the hand wheel is inserted into the rotating barrel, the protective cylinder is unlocked from the rotating barrel; When the ratchet assembly can move to the convex ring, the ratchet assembly no longer transmits power to the threaded rod, the polygonal column is connected with a ratchet pawl that transmits power to the threaded rod, the transmission direction of the ratchet pawl is opposite to that of the ratchet assembly, and the threaded rod is provided with a round hole for the polygonal column to be inserted.

5. A multi-beam antenna according to claim 4, characterized in that: The ratchet assembly includes a ratchet fixed to a threaded rod, a rotating disk rotatably connected to the ratchet, a pawl elastically rotatably connected to the rotating disk, and a driving rod radially plugged into the ratchet, the pawl is provided with a movable groove, the driving rod is provided with a convex ball located in the movable groove, the driving rod contacts the inner wall of the protective tube, and the driving pawl does not cooperate with the ratchet after contacting the inner ring of the convex ring, and the polygonal column is plugged into the rotating disk.

6. A multi-beam antenna according to claim 5, characterized in that: The convex ring is connected with a displacement plate which is slidably connected to the outer side of the protective tube, and the protective tube is provided with a sliding groove.

7. A multi-beam antenna according to claim 6, characterized in that: The convex ring is provided with inclined surfaces with triangular cross-sections on both axial sides.

8. The multi-beam antenna according to claim 7, characterized in that: The protective tube is elastically plugged with a lock rod, and the rotating barrel is elastically connected with a resistance rod. When the rotating barrel contacts the limiting plate, the resistance rod can rotate coaxially with the lock rod to allow the lock rod to be inserted into the rotating barrel.

9. The multi-beam antenna according to claim 8, characterized in that: A telescopically adjustable protective plate is arranged on the side of the guide plate, a positioning groove is arranged on the inner side of the guide plate, a positioning plate fixed on the protective plate is inserted into the positioning groove, and the protective plate and the guide plate can be plugged and connected.

10. The multi-beam antenna according to claim 9, characterized in that: An angle ruler is axially arranged on one side of the protective tube and is located on the guide plate.

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