Longbour lens antenna and mounting and positioning structure thereof

Abstract

The invention relates to the technical field of lens antennas, and discloses a Longbour lens antenna and an installation positioning structure thereof, the Longbour lens antenna comprises a lens shell and a Longbour lens, the Longbour lens is installed at the open end of the lens shell, the lens shell is rotatably installed on an adjusting plate and can be driven to rotate through a second driver, and the second driver is installed on the lens shell. The adjusting plate can perform inclination adjustment on the reference plate so as to change the beam main direction of the lens antenna. According to the invention, a multi-stage adjustment mechanism and pitching adjustment are set, the second driver drives the lens shell to rotate around the adjustment plate, the pitching angle of the antenna is directly adjusted, and the main direction of a beam is changed; inclination leveling: the three groups of adjusting rods perform inclination leveling on the adjusting plate through the leveling seat, so that mechanical installation errors are compensated, and the beam pointing accuracy is ensured; height and pitching are linked, a sensor is controlled to be linked with a second driver to automatically adjust the pitching angle, namely, the pitching angle is raised, downward pitching and upward pitching are lowered, and the main direction of a wave beam is maintained within a set range.

Description

Technical Field

[0001] The present invention relates to the technical field of lens antennas, and in particular to a Luneburg lens antenna and an installation and positioning structure thereof. Background Art

[0002] The Luneburg lens is a spherically symmetrical dielectric lens with an inhomogeneous refractive index. Its refractive index changes with the radius, and it can focus the incident plane electromagnetic waves to the focus of the dielectric sphere surface. Conversely, the Luneburg lens can also convert the electromagnetic waves emitted by the feed source at the focus into plane waves for radiation, thereby realizing a high-gain, narrow-beam antenna. Luneburg lens antennas have developed rapidly in the fields of mobile communications, radar monitoring, aerospace, remote sensing, etc.

[0003] The prior art discloses a spotlight-type Luneburg lens antenna for building coverage, with application number CN202410686998.9, comprising a housing, a lens antenna and a bracket; the housing is a cylindrical member, a shell cover is installed on the open end of the cylindrical member, and a mounting plate is installed on the closed end of the housing; the lens antenna comprises a Luneburg lens, a reflector and a radiation unit; the invention has the characteristics of simple structure, scientific design, light weight, strong signal penetration, and is very suitable for covering buildings, etc. However, the solution still has the following problems: This solution only supports pitch adjustment and cannot switch to horizontal swing mode. It is difficult to take into account both vertical building coverage and horizontal wide-area coverage requirements, such as being unable to optimize high-rise and ground signals at the same time. At the same time, the existing antenna adjustment method will cause the main direction of the beam to shift after the antenna angle is adjusted, and it is impossible to dynamically maintain the coverage range. For example, the signal reception strength on different floors of a high-rise building fluctuates greatly. For this reason, we need to propose a Luneburg lens antenna and its installation and positioning structure. Summary of the invention

[0004] The purpose of the present invention is to provide a technical solution, to set pitch adjustment and horizontal rotation, and to set a linkage mode of lifting adjustment and pitch adjustment, so as to solve the problems in the prior art raised in the above background technology.

[0005] To achieve the above object, the present invention adopts the following technical solutions: A Luneburg lens antenna comprises: a lens housing and a Luneburg lens, wherein the Luneburg lens is mounted on an open end of the lens housing, the lens housing is rotatably mounted on an adjustment plate and can be driven to rotate by a second driver, the adjustment plate is adjustably mounted on a reference plate, the adjustment plate can be tilted and adjusted on the reference plate to change the main beam direction of the lens antenna; the reference plate and the adjustment plate are both arranged in a frame structure, a first driver is arranged at one corner of the reference plate, and the first driver can drive the reference plate to rotate; When the reference plate is located at the initial position, the adjustment of the adjustment plate by the second driver is pitch adjustment. When the position of the lens antenna rises, the second driver automatically performs pitch adjustment on the adjustment plate.

[0006] Preferably, three groups of adjustment rods are plugged and installed on the reference plate, a leveling seat is provided on the adjustment plate, and the adjustment rods are movably installed inside the leveling seat. The adjustment plate can be tilted by adjusting the three groups of adjustment rods.

[0007] Preferably, a radiation unit and a reflection unit are provided inside the lens housing, and the reflection unit is installed at the closed end inside the lens housing. The Luneburg lens, the radiation unit and the reflection unit are arranged in sequence along the central axis of the lens housing. The signal is reflected by the reflection unit and is arranged through the signal receiving and sending direction of the radiation unit facing the Luneburg lens.

[0008] The present invention also provides an installation and positioning structure for a Luneburg lens antenna, which is used to install the Luneburg lens antenna, including: a driving rod and a supporting rod, and the Luneburg lens antenna is raised and lowered on the driving rod and the supporting rod; when the position of the lens antenna is raised, the driver adjusts the second pair of adjustment plates downward, and when the position of the lens antenna is lowered, the driver adjusts the second pair of adjustment plates upward.

[0009] Preferably, the driver 1 is installed on the mounting seat, the mounting seat is installed on the sliding seat through the locking seat, the sliding seat is slidably installed on the driving rod and the support rod, the driving rod and the support rod are installed on the base, and the driving rod is provided with a driver 3 that can drive the driving rod to rotate.

[0010] Preferably, specifically, the driving rod can be configured as a driving screw, and the driver three can drive the driving rod to rotate to achieve the lifting and lowering movement of the sliding seat on the driving rod.

[0011] Preferably, a limiting groove is provided on the side of the Luneburg lens which is offset from the main direction of the beam, and a limiting block cooperating with the limiting groove is provided on the inner side wall in the opening direction of the lens housing, and the lens housing is clamped in the limiting groove through the limiting block.

[0012] Preferably, the rotation adjustment range of the pair of reference plates of the driver is 90 degrees, and after the pair of reference plates of the driver are rotationally adjusted by 90 degrees, the pitch adjustment of the second pair of lens housings of the driver is changed to horizontal swing adjustment.

[0013] Technical effects and advantages of the present invention: Compared with the prior art, the Luneburg lens antenna and its installation and positioning structure proposed by the present invention have the following advantages: The present invention is provided with a multi-stage adjustment mechanism, pitch adjustment, driver 2 drives the lens housing to rotate around the adjustment plate, directly adjusts the pitch angle of the antenna, and changes the main direction of the beam; tilt and leveling, three groups of adjustment rods tilt and level the adjustment plate through a leveling seat, compensate for mechanical installation errors, and ensure the accuracy of beam pointing; height and pitch linkage, when the lens antenna is lifted and lowered through the driving rod and the supporting rod, the control sensor is linked to driver 2 to automatically adjust the pitch angle (raise the pitch down, lower the pitch up), and maintain the main direction of the beam within a set range; reference plate mode switching, when the reference plate is in the initial position, the adjustment of driver 2 is in the pitch mode; when driver 1 drives the reference plate to rotate 90 degrees, the adjustment mode is switched to horizontal swing, and the lateral coverage range is expanded; signal transmission path, after the signal is reflected by the reflection unit, it is emitted by the radiation unit toward the Luneburg lens, and the central axis of the lens housing is aligned to ensure beam focusing. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is one of the structural schematic diagrams of the Luneburg lens antenna of the present invention; Figure 2 This is the second structural schematic diagram of the Luneburg lens antenna of the present invention; Figure 3 It is a schematic diagram of the internal cross-sectional structure of the Luneburg lens antenna of the present invention; Figure 4 For the present invention Figure 3 A schematic diagram of the enlarged structure at A in the middle; Figure 5 It is a three-dimensional structural schematic diagram of the installation and positioning structure of the Luneburg lens antenna of the present invention; Figure 6 It is a schematic diagram of a top view of the structure of the Luneburg lens antenna installation and positioning structure of the present invention; Figure 7 It is a front view structural schematic diagram of the installation and positioning structure of the Luneburg lens antenna of the present invention; Figure 8 It is a structural schematic diagram of the linkage between height adjustment and pitch adjustment of the Luneburg lens antenna in the present invention.

[0015] In the figure: 11. Base; 12. Driving rod; 13. Support rod; 14. Sliding seat; 15. Locking seat; 16. Driver three; 21. Mounting seat; 22. Driver 1; 23. Reference plate; 24. Adjustment plate; 25. Leveling seat; 26. Adjustment rod; 27. Lens housing; 28. Luneburg lens; 29. ​​Radiation unit; 210. Reflection unit; 211. Limit block; 212. Limit groove; 213. Protective cover; 214. Rotation shaft; 215. Driver 2. DETAILED DESCRIPTION

[0016] The subject matter described herein will now be discussed with reference to example implementations. It should be understood that the discussion of these implementations is only to enable those skilled in the art to better understand and implement the subject matter described herein, and the functions and arrangements of the elements discussed may be changed without departing from the scope of protection of the contents of this specification. Various examples may omit, replace, or add various processes or components as needed. In addition, the features described in some examples may also be combined in other examples.

[0017] The invention provides Figures 1 to 8 As shown, a Luneburg lens antenna comprises: A lens housing 27 and a Luneburg lens 28, wherein the Luneburg lens 28 is mounted at an open end of the lens housing 27, the lens housing 27 is rotatably mounted on the adjustment plate 24 and can be driven to rotate by a driver 215, the adjustment plate 24 is adjustably mounted on the reference plate 23, and the adjustment plate 24 can be tilted and adjusted on the reference plate 23 to change the main beam direction of the lens antenna; the reference plate 23 and the adjustment plate 24 are both configured as a frame structure, and a driver 22 is provided at one corner of the reference plate 23, and the driver 22 can drive the reference plate 23 to rotate; When the reference plate 23 is at the initial position, the driver 215 performs pitch adjustment on the adjustment plate 24. When the position of the lens antenna rises, the driver 215 automatically performs pitch adjustment on the adjustment plate 24 so that the main beam direction of the lens antenna is always within a certain range.

[0018] like Figure 1 and Figure 2 As shown, three groups of adjusting rods 26 are installed on the reference plate 23, and a leveling seat 25 is provided on the adjusting plate 24. The adjusting rods 26 are movably installed inside the leveling seat 25. The adjusting plate 24 can be tilted by adjusting the three groups of adjusting rods 26. Since the adjusting plate 24 is actually installed on the reference plate 23, the adjustment of the adjusting plate 24 is actually a leveling operation relative to the reference plate 23.

[0019] like Figure 3 As shown, a radiation unit 29 and a reflection unit 210 are arranged inside the lens housing 27. The reflection unit 210 is installed at the closed end inside the lens housing 27. The Luneburg lens 28, the radiation unit 29 and the reflection unit 210 are arranged in sequence along the central axis of the lens housing 27. The signal is reflected by the reflection unit 210 and is arranged in the signal receiving and transmitting direction of the radiation unit 29 facing the Luneburg lens 28. Specifically, a protective cover shell 213 is arranged outside the lens housing 27 in the circumferential direction of the Luneburg lens 28. The protective cover shell 213 is arranged outside the Luneburg lens 28 to protect the Luneburg lens 28.

[0020] like Figure 7 and Figure 8 As shown, the present invention also provides an installation and positioning structure of a Luneburg lens antenna, including: a driving rod 12, a supporting rod 13 and a control sensor, the control sensor is used to drive and control multiple drivers separately, and the Luneburg lens antenna is raised and lowered on the driving rod 12 and the supporting rod 13; under the control of the control sensor, when the position of the lens antenna is raised, the driver 215 adjusts the adjustment plate 24 downward, and when the position of the lens antenna is lowered, the driver 215 adjusts the adjustment plate 24 upward, so that the main direction of the beam of the lens antenna is always within a certain range.

[0021] Working principle: multi-level adjustment mechanism, pitch adjustment, driver 215 drives the lens housing 27 to rotate around the adjustment plate 24, directly adjusts the pitch angle of the antenna, and changes the main direction of the beam; tilt leveling, three groups of adjustment rods 26 tilt and level the adjustment plate 24 (relative to the reference plate 23) through the leveling seat 25, compensate for mechanical installation errors, and ensure the accuracy of beam pointing; height-pitch linkage, when the lens antenna is raised and lowered by the driving rod 12 and the supporting rod 13, the control sensor linkage driver 215 automatically adjusts the pitch angle (increases the pitch and lowers the pitch) to maintain the main direction of the beam within the set range; reference plate 23 mode switching, when the reference plate 23 is in the initial position, the adjustment of driver 215 is in pitch mode; when driver 1 22 drives the reference plate 23 to rotate 90 degrees, the adjustment mode is switched to horizontal swing to expand the lateral coverage range; signal transmission path, after the signal is reflected by the reflection unit 210, it is emitted by the radiation unit 29 toward the Luneburg lens 28, and the central axis of the lens housing 27 is aligned to ensure beam focusing.

[0022] like Figure 1 and Figure 2 As shown, the driver 1 22 is mounted on the mounting seat 21, and the mounting seat 21 is mounted on the sliding seat 14 through the locking seat 15. The sliding seat 14 is slidably mounted on the driving rod 12 and the support rod 13, and the driving rod 12 and the support rod 13 are mounted on the base 11. The driving rod 12 is provided with a driver 3 16 that can drive the driving rod 12 to rotate. Specifically, the driving rod 12 can be set as a driving screw, and the driver 3 16 can drive the driving rod 12 to rotate to realize the lifting and lowering movement of the sliding seat 14 on the driving rod 12. For example, the driving rod 12 is set as a bidirectional threaded screw, and the sliding seat 14 is provided with a corresponding threaded sleeve and installed in threaded cooperation with the driving rod 12, so that the driving rod 12 can be lifted or lowered under the forward and reverse driving of the driver 3 16. Figure 3 and Figure 4 As shown, the output shaft of the driver 22 is connected to the reference plate 23 via a rotating shaft 214 , and the rotating shaft 214 serves as a rotating reference shaft for adjusting the rotation of the reference plate 23 .

[0023] like Figure 3 and Figure 4 As shown, a limiting groove 212 is provided on the side of the Luneburg lens 28 that is offset from the main direction of the beam, and a limiting block 211 that cooperates with the limiting groove 212 is provided on the inner side wall in the opening direction of the lens housing 27. Specifically, the lens housing 27 is stuck in the limiting groove 212 through the limiting block 211, thereby positioning the installation of the Luneburg lens 28 to prevent the Luneburg lens 28 from being offset in other adjustment operations.

[0024] like Figure 2 and Figure 7 As shown, the rotation adjustment range of the driver 1 22 for the reference plate 23 is 90 degrees, and after the driver 1 22 rotates the reference plate 23 90 degrees, the pitch adjustment of the driver 2 215 for the lens housing 27 is changed to horizontal swing adjustment.

[0025] In summary, this scheme has the following comprehensive effects: multi-stage adjustment mechanism: pitch adjustment, driver 215 drives the lens housing 27 to rotate around the adjustment plate 24, directly adjusting the pitch angle of the main direction of the beam; tilt leveling, three groups of adjustment rods 26 cooperate with the leveling seat 25, and the adjustment plate 24 is tilted and leveled relative to the reference plate 23 by the extension and retraction of the adjustment rods 26, so as to indirectly correct the deviation of the beam direction; height linkage, driver 3 16 controls the lifting and lowering of the sliding seat 14 by driving the screw rod, triggering the height sensor to link driver 2 215 to automatically compensate for the pitch angle (pitch down when rising, pitch up when lowering), so as to keep the main direction of the beam stable; horizontal swing, when the reference plate 23 is rotated 90 degrees by driver 1 22, the pitch adjustment is switched to the horizontal swing mode to expand the lateral coverage; dynamic positioning protection; limit structure, the limit groove 212 on the side of the Luneburg lens 28 is engaged with the limit block 211 of the lens housing 27 to prevent the lens from shifting during adjustment.

[0026] Beam direction adaptation: height and pitch are linked, and the main direction of the beam is automatically compensated when the antenna is raised or lowered to avoid coverage blind spots caused by height changes (such as signal strength differences on different floors in high-rise buildings); multi-dimensional adjustment, pitch, tilt, horizontal swing multi-mode coverage, adapt to complex scenarios (such as urban building-intensive areas, mountainous undulating terrain); structural reliability improvement: limit anti-drift, the limit groove 212 cooperates with the block to lock the position of the Luneburg lens 28 to ensure beam focusing accuracy; installation flexibility optimization: frame-type reference plate 23 and adjustment plate 24, lightweight design reduces load, adapt to different installation bases (such as rooftops, towers). Drive the screw to rise and fall, and achieve precise height adjustment through driver three 16 to meet differentiated deployment requirements; mode switching scalability; 90-degree rotation of the reference plate 23 converts pitch adjustment into horizontal swing, supporting wide-area coverage (such as horizontal signal coverage in stadiums and transportation hubs).

[0027] The embodiments of the present invention are described above, but the present invention is not limited to the above-mentioned specific implementation modes. The above-mentioned specific implementation modes are merely illustrative and not restrictive. Under the guidance of the present invention, ordinary technicians in this field can also make many forms, all of which are within the protection of the present invention.

Claims

1. A Luneburg lens antenna, characterized in that: include: A lens housing (27) and a Luneburg lens (28), wherein the Luneburg lens (28) is mounted at an open end of the lens housing (27), the lens housing (27) is rotatably mounted on an adjustment plate (24) and can be driven to rotate by a second driver (215), the adjustment plate (24) is adjustably mounted on a reference plate (23), and the adjustment plate (24) can be tilted and adjusted on the reference plate (23) to change the main beam direction of the lens antenna; the reference plate (23) and the adjustment plate (24) are both arranged as a frame structure, a driver (22) is arranged at one corner of the reference plate (23), and the driver (22) can drive the reference plate (23) to rotate; When the reference plate (23) is located at the initial position, the adjustment performed by the second driver (215) on the adjustment plate (24) is pitch adjustment. When the position of the lens antenna is raised, the second driver (215) automatically performs pitch adjustment on the adjustment plate (24).

2. The Luneburg lens antenna according to claim 1, characterized in that: The reference plate (23) is plugged with three groups of adjustment rods (26), the adjustment plate (24) is provided with a leveling seat (25), the adjustment rods (26) are movably mounted inside the leveling seat (25), and the adjustment plate (24) can be tilted by adjusting the three groups of adjustment rods (26).

3. The Luneburg lens antenna according to claim 2, characterized in that: A radiation unit (29) and a reflection unit (210) are arranged inside the lens housing (27); the reflection unit (210) is installed at the closed end inside the lens housing (27); the Luneburg lens (28), the radiation unit (29) and the reflection unit (210) are arranged in sequence along the central axis of the lens housing (27); a signal is reflected by the reflection unit (210) and is arranged to face the Luneburg lens (28) through the signal receiving and transmitting direction of the radiation unit (29).

4. A mounting and positioning structure of a Luneburg lens antenna, used for mounting a Luneburg lens antenna as claimed in claim 1, characterized in that: include: A driving rod (12), a supporting rod (13) and a control sensor, wherein the control sensor is used to drive and control the multiple drivers separately, and the Luneburg lens antenna is raised and lowered on the driving rod (12) and the supporting rod (13); under the control of the control sensor, when the position of the lens antenna is raised, the driver 2 (215) adjusts the adjustment plate (24) downward, and when the position of the lens antenna is lowered, the driver 2 (215) adjusts the adjustment plate (24) upward.

5. The installation and positioning structure of a Luneburg lens antenna according to claim 4, characterized in that: The driver 1 (22) is mounted on a mounting seat (21), the mounting seat (21) is mounted on a sliding seat (14) via a locking seat (15), the sliding seat (14) is slidably mounted on a driving rod (12) and a supporting rod (13), the driving rod (12) and the supporting rod (13) are mounted on a base (11), and a driver 3 (16) is provided on the driving rod (12) for driving the driving rod (12) to rotate.

6. The installation and positioning structure of a Luneburg lens antenna according to claim 5, characterized in that: The driving rod (12) can be configured as a driving screw rod, and the driver three (16) can drive the driving rod (12) to rotate so as to achieve the lifting and lowering movement of the sliding seat (14) on the driving rod (12).

7. The installation and positioning structure of a Luneburg lens antenna according to claim 4, characterized in that: A limiting groove (212) is provided on the side of the Luneburg lens (28) that is offset from the main direction of the beam, and a limiting block (211) that cooperates with the limiting groove (212) is provided on the inner side wall in the opening direction of the lens housing (27), and the lens housing (27) is clamped in the limiting groove (212) via the limiting block (211).

8. The installation and positioning structure of a Luneburg lens antenna according to claim 4, characterized in that: The rotation adjustment range of the driver 1 (22) on the reference plate (23) is 90 degrees, and after the driver 1 (22) rotates the reference plate (23) for 90 degrees, the pitch adjustment of the lens housing (27) by the driver 2 (215) is changed to horizontal swing adjustment.

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