A multi-beam antenna

Abstract

The application relates to a multi-beam antenna which comprises an antenna body composed of a shell, a bottom plate, a Rotman lens, a reflecting plate and an antenna array, the shell is fixed with the bottom plate, the reflecting plate, the Rotman lens and the antenna array are located inside the shell, the Rotman lens and the antenna array are respectively arranged on the two sides of the reflecting plate and are connected through a shift line, the Rotman lens is located on the side of the reflecting plate facing the bottom plate, and two fixing devices for adjusting the installation inclination angle of the antenna body are arranged on the side of the antenna body; the application has the advantages of convenient multi-beam coverage and light weight.

Description

Technical Field

[0001] This invention belongs to the field of multi-beam antenna technology, and specifically relates to a multi-beam antenna. Background Technology

[0002] Panel antennas are a type of directional antenna and are a type of antenna used in mobile communication systems. They are mainly used for outdoor signal coverage. Whether it is GSM or CDMA, panel antennas are one of the most commonly used and extremely important types of base station antennas.

[0003] In the prior art, plate antennas have the advantages of high gain, good sector pattern, small back lobe, convenient control of vertical plane pattern depression angle, reliable sealing performance and long service life. However, due to the antenna's own structure, the overall weight of the antenna is relatively heavy and it cannot achieve multi-beam coverage. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a multi-beam antenna that is easy to cover with multiple beams and is lightweight.

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

[0006] A multi-beam antenna includes an antenna body consisting of a housing, a base plate, a Rotman lens, a reflector, and an antenna array. The housing is fixed to the base plate. The reflector, Rotman lens, and antenna array are located inside the housing. The Rotman lens and antenna array are respectively located on both sides of the reflector and connected by a phase shifting transmission line. The Rotman lens is located on the side of the reflector facing the base plate.

[0007] The antenna body has two fixing devices on its side for adjusting the installation tilt angle 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 hinge rods rotatably connected to the hinge seat and the fixing clamp respectively, and a telescopic adjustment assembly. The other ends of the two hinge rods are rotatably connected, and the telescopic adjustment assembly is connected to the two hinge rods to adjust the included angle between the two hinge rods.

[0009] Furthermore, the telescopic adjustment assembly includes a telescopically adjustable guide plate, a rotating seat fixed to 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 drive assembly for driving the threaded rod to rotate. The drive assembly is connected to the guide plate and is located on the side of the threaded seat away from the rotating seat. The rotating seat gradually moves away from the threaded seat as the guide plate extends and retracts. The threaded seat and the rotating seat are independently rotatably connected to the hinge rod.

[0010] Furthermore, the drive assembly includes a protective cylinder fixed on the guide plate, a rotating barrel elastically rotatably inserted into the end of the protective cylinder away from the threaded seat, a polygonal column fixed to the rotating barrel, a ratchet assembly that drives the polygonal column, and a convex ring slidably disposed inside the protective cylinder. The protective cylinder is disposed on the side of the threaded seat away from the rotating seat.

[0011] A limit plate is provided inside the protective cylinder, and the rotating barrel is locked with the protective cylinder when it moves down to contact the limit plate.

[0012] A handwheel is inserted into the rotating barrel, and when the handwheel 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 is no longer driven by the threaded rod. The polygonal post is inserted with a ratchet pawl that drives the threaded rod. The ratchet pawl and the ratchet assembly have opposite driving directions. The threaded rod has a circular hole for the polygonal post to be inserted.

[0014] Furthermore, the ratchet assembly includes a ratchet fixed to a threaded rod, a rotating disk rotatably connected within the ratchet, a pawl elastically rotatably connected to the rotating disk, and a drive rod radially inserted into the ratchet. The pawl has a movable groove, and the drive rod has a convex ball located within the movable groove. The drive rod contacts the inner wall of the protective cylinder, and after contacting the inner ring of the convex ring, it drives the pawl not to engage with the ratchet. The polygonal column is inserted into the rotating disk.

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

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

[0017] Furthermore, the protective cylinder is elastically connected to a locking rod, and the rotating barrel is elastically connected to an abutment rod. When the rotating barrel contacts the limiting plate, the abutment rod can rotate coaxially with the locking rod, so that the locking rod is inserted into the rotating barrel.

[0018] Furthermore, the guide plate is provided with a retractable and adjustable protective plate on its side, and a positioning groove is provided 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 into each other.

[0019] Furthermore, an angle gauge located on the guide plate is provided along the axial direction on one side of the protective cylinder.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] 1. This invention achieves the advantages of multi-beam coverage and wide vertical beamwidth through the combination of Rotman lenses, antenna arrays, and reflectors;

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

[0023] In summary, the present invention has the advantages of multi-beam coverage and light weight. Attached Figure Description

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

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

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

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

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

[0029] Figure 6 For the present invention Figure 4 A magnified structural diagram of part A.

[0030] In the diagram, 1. Bracket; 2. Fixing clamp; 3. Telescopic adjustment assembly; 31. Guide plate; 32. Rotating barrel; 33. Positioning groove; 34. Rotating seat; 35. Threaded seat; 36. Protective cylinder; 361. Sliding groove; 362. Limiting plate; 37. Handwheel; 371. Abutting rod; 372. Locking rod; 38. Protruding ring; 39. Ratchet; 391. Rotating disk; 392. Drive rod; 393. Pawl; 30. Polygonal column; 301. Angle ruler; 302. Displacement plate; 303. Threaded rod; 4. Hinge rod; 5. Hinge seat; 6. Antenna body; 61. Rotman lens; 62. Base plate; 63. Housing; 64. Antenna array; 65. Reflector. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort 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 housing 63, a base plate 62, a Rotman lens 61, a reflector 65, and an antenna array 64. The housing 63 is fixed to the base plate 62. The reflector 65, the Rotman lens 61, and the antenna array 64 are located inside the housing 63. The Rotman lens 61 and the antenna array 64 are respectively located on both sides of the reflector 65 and connected by a phase shift transmission line. The Rotman lens 61 is located on the side of the reflector 65 facing the base plate 62.

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

[0034] In use, the fixing device is fixed on the bracket 1, and the tilt 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 phase shift transmission line, and the antenna array 64.

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

[0036] The antenna array 64 uses an EBG structure antenna element, which can reduce the antenna height to 1 / 4 of the original, 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 hinge rods 4 respectively rotatably connected to the hinge seat 5 and the fixing clamp 2, and a telescopic adjustment assembly 3. The other ends of the two hinge rods 4 are rotatably connected, and the telescopic adjustment assembly 3 is connected to the two hinge rods 4 to adjust the included angle between the two hinge rods 4.

[0038] In use, the included angle between the hinge rods 4 is adjusted by the telescopic adjustment component 3. As the included angle between the two hinge rods 4 changes, the tilt angle of the antenna body 6 is gradually adjusted, thereby ensuring the adjustment of the tilt angle of the antenna body 6.

[0039] In this embodiment, the telescopic adjustment assembly 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 drive assembly for driving the threaded rod 303 to rotate. The drive assembly is connected to the guide plate 31 and is located on the 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 telescopically extends. The threaded seat 35 and the rotating seat 34 are independently rotatably connected to the hinge rod 4. The guide plate 31 is specifically formed by two U-shaped plates interlocking with each other.

[0040] In use, the threaded rod 303 is driven to rotate by the drive assembly. As the threaded rod 303 rotates, it gradually moves and pushes the rotating seat 34 to move. At this time, the rotating seat 34 pushes the hinge rod 4 connected to the hinge seat 5 to rotate, causing the tilt angle of the antenna body 6 to change, thereby ensuring adjustment.

[0041] In this embodiment, the drive assembly includes a protective cylinder 36 fixed on the guide plate 31, a rotating barrel 32 elastically rotatably inserted into the end of the protective cylinder 36 away from the threaded seat 35, a polygonal column 30 fixed to the rotating barrel 32, a ratchet assembly that drives the polygonal column 30, and a convex ring 38 slidably disposed in the protective cylinder 36. The protective cylinder 36 is disposed on the side of the threaded seat 35 away from the rotating seat 34.

[0042] A limiting plate 362 is fixed inside the protective cylinder 36. When the rotating barrel 32 moves down to contact the limiting plate 362, it locks with the protective cylinder 36.

[0043] A handwheel 37 is inserted into the rotating barrel 32, and when the handwheel 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 drives the threaded rod 303. The polygonal post 30 is inserted with a ratchet pawl that drives the threaded rod 303 (not shown in the figure, the ratchet pawl is the prior art). The ratchet pawl and the ratchet assembly drive in opposite directions. The threaded rod 303 has a circular hole for the polygonal post 30 to be inserted.

[0045] In use, first, move the displacement ring 38 according to the required tilt angle, then insert the handwheel 37 into the rotating barrel 32. At this time, the rotating barrel 32 is unlocked and elastically reset. Then, the operator turns the handwheel 37. As the handwheel 37 turns, the threaded rod 303 gradually moves and drives the ratchet assembly to move. When the ratchet assembly moves to the cam, the ratchet assembly no longer drives the threaded rod 303. At this time, the angle adjustment is completed. Then, the operator presses the threaded barrel and rotates the threaded barrel to lock it.

[0046] When it is necessary to adjust the tilt angle and reset, simply unlock the threaded barrel and reverse handwheel 37 as described above.

[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 drive rod 392 radially inserted into the ratchet 39. The pawl 393 has a movable groove, and the drive rod 392 is provided with a convex ball located in the movable groove. The drive rod 392 contacts the inner wall of the protective cylinder 36, and after contacting the inner ring of the convex ring 38, the drive pawl 393 does not cooperate with the ratchet 39. The polygonal column 30 is inserted into the rotating disk 391.

[0048] When in use, when the drive rod 392 contacts the protective cylinder 36, the pawl 393 drives the ratchet 39 to rotate. When the drive rod 392 contacts the convex ring 38, as the drive rod 392 moves, it pushes the pawl 393 to stop engaging with the ratchet 39, so that the pawl 393 no longer engages with the ratchet 39, ensuring accurate angle adjustment.

[0049] In this embodiment, the convex ring 38 is connected to a displacement plate 302 that is slidably connected to the outside of the protective cylinder 36 via a spring and a telescopic rod. The protective cylinder 36 has a sliding groove 361, and the telescopic rod and spring are located in the sliding groove 361.

[0050] During use, the displacement plate 302 drives the convex ring 38 to move, ensuring the displacement adjustment of the convex ring 38. The telescopic rod and spring drive the displacement plate 302 to always be in contact with the protective cylinder 36, ensuring the friction of the protective cylinder 36 and preventing the convex ring 38 from being pushed to move when the drive rod 392 moves.

[0051] In this embodiment, the convex ring 38 has inclined surfaces with triangular cross-sections on both axial sides;

[0052] In use, the inclined surface allows the drive rod 392 to move stably to the inner side of the convex ring 38.

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

[0054] In this embodiment, the protective cylinder 36 is elastically inserted with a locking rod 372, and the rotating barrel 32 is elastically connected with a contact rod 371. When the rotating barrel 32 contacts the limiting plate 362, the contact rod 371 can rotate and be coaxial with the locking rod 372, so that the locking rod 372 can be inserted into the rotating barrel 32.

[0055] When in use, the handwheel 37 is inserted into the rotating barrel 32. At this time, the abutment rod 371 pushes the locking rod 372 to move until the locking rod 372 is level with the circumferential side of the rotating barrel 32. At this time, the rotating barrel 32 extends elastically so that the locking rod 372 and the abutment rod 371 are misaligned. Personnel 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 operator pulls the handwheel 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 lever is provided at one end of the rotating drum 32 that extends out of the protective cylinder 36, so that personnel can push the rotating drum 32 to rotate.

[0058] In this embodiment, as Figure 2As shown, the guide plate 31 is provided with a retractable and adjustable protective plate on its side. Multiple sets of plates are fixed on the inner side of the guide plate 31. There are two plates in each set, 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. The protective plate and the guide plate 31 can be connected by insertion. The protective plate is formed by two connecting plates inserted together.

[0059] When in use, insert the positioning plate on the protective plate into the positioning groove 33 so that the protective plate and the guide plate 31 are aligned, and then fix it with bolts.

[0060] As a preferred embodiment, to ensure waterproofing, the telescopic parts of the protective plate and guide plate 31, as well as the contact parts between the protective plate and guide plate 31, are all sealed with seals to ensure a sealing effect and prevent internal components from being corroded by rainwater.

[0061] In this embodiment, an angle ruler 301 located on the guide plate 31 is provided on one side of the protective cylinder 36 along the axial direction;

[0062] When using it, the angle that needs to be adjusted is confirmed based on the position of the displacement plate 302 on the angle ruler 301, so that it can be used by personnel.

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

Claims

1. A multi-beam antenna, characterized in that: The antenna body comprises a housing, a base plate, a Rotman lens, a reflector, and an antenna array. The housing is fixed to the base plate. The reflector, Rotman lens, and antenna array are located inside the housing. The Rotman lens and antenna array are located on both sides of the reflector and connected by a phase-shifting transmission line. The Rotman lens is located on the side of the reflector facing the base plate. The antenna body has two fixing devices on its side for adjusting the installation tilt angle of the antenna body; The fixing device includes a fixing clamp, a hinge seat fixed to the side of the antenna body, two hinge rods rotatably connected to the hinge seat and the fixing clamp respectively, and a telescopic adjustment assembly. The other ends of the two hinge rods are rotatably connected, and the telescopic adjustment assembly is connected to the two hinge rods to adjust the included angle between the two hinge rods. The telescopic adjustment assembly includes a telescopically adjustable guide plate, a rotating seat fixed to 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 drive assembly for driving the threaded rod to rotate. The drive assembly is connected to the guide plate and is located on the side of the threaded seat away from the rotating seat. The rotating seat gradually moves away from the threaded seat as the guide plate telescopically extends and retracts. The threaded seat and the rotating seat are independently rotatably connected to the hinge rod. The drive assembly includes a protective cylinder fixed to a guide plate, a rotating barrel elastically rotatably inserted into the end of the protective cylinder away from the threaded seat, a polygonal column fixed to the rotating barrel, a ratchet assembly that drives the polygonal column, and a convex ring slidably disposed inside the protective cylinder. The protective cylinder is disposed on the side of the threaded seat away from the rotating seat. A limit plate is provided inside the protective cylinder, and the rotating barrel is locked with the protective cylinder when it moves down to contact the limit plate. A handwheel is inserted into the rotating barrel, and when the handwheel 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 is no longer driven by the threaded rod. The polygonal post is inserted with a ratchet pawl that drives the threaded rod. The ratchet pawl and the ratchet assembly have opposite driving directions. The threaded rod has a circular hole for the polygonal post to be inserted. An angle gauge is provided on the guide plate along the axial direction on one side of the protective cylinder.

2. A multi-beam antenna according to claim 1, characterized in that: The ratchet assembly includes a ratchet fixed to a threaded rod, a rotating disk rotatably connected within the ratchet, a pawl elastically rotatably connected to the rotating disk, and a drive rod radially inserted into the ratchet. The pawl has a movable groove, and the drive rod has a convex ball located within the movable groove. The drive rod contacts the inner wall of the protective cylinder, and after contacting the inner ring of the convex ring, it drives the pawl to disengage from the ratchet. The polygonal column is inserted into the rotating disk.

3. A multi-beam antenna according to claim 2, characterized in that: The convex ring is connected to a displacement plate that is slidably connected to the outside of the protective cylinder, and the protective cylinder is provided with a sliding groove.

4. A multi-beam antenna according to claim 3, characterized in that: The convex ring has inclined surfaces with triangular cross-sections on both sides of its axial direction.

5. A multi-beam antenna according to claim 4, characterized in that: The protective cylinder is elastically connected to a locking rod, and the rotating barrel is elastically connected to an abutment rod. When the rotating barrel contacts the limiting plate, the abutment rod can rotate and be coaxial with the locking rod, so that the locking rod can be inserted into the rotating barrel.

6. A multi-beam antenna according to claim 5, characterized in that: The guide plate has a retractable and adjustable protective plate on its side, and a positioning groove is provided 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 into each other.

Images