Lens antenna

Abstract

The utility model provides a lens antenna, which relates to the technical field of antennae and comprises a luneberg lens, an earth radiation unit, an air radiation unit, a horizontal adjusting mechanism and a tipping adjusting mechanism. The center of the Lunberg lens is located on a reference plane, and the reference plane is parallel to the horizontal plane or forms a preset included angle with the horizontal plane. The to-ground radiation unit is arranged towards the center of the luneberg lens in a radiation manner, and the to-ground radiation unit is located above the reference surface; the air radiation unit is arranged towards the center of the luneberg lens in a radiation manner, and the air radiation unit is located below the reference surface; the horizontal adjusting mechanism is used for synchronously adjusting the main radiation direction of the to-ground radiation unit and the main radiation direction of the to-air radiation unit in the horizontal direction; and the tipping adjusting mechanism is used for independently adjusting the elevation angle of the main radiation direction of the air radiation unit. The lens antenna provided by the utility model has the characteristic of multidimensional adjustability, can meet the requirements of low altitude and ground coverage at the same time, and is compact in structure and small in occupied space.

Description

TECHNICAL FIELD

[0001] The utility model relates to antenna technical field especially relates to a lens antenna. BACKGROUND

[0002] With the application of low altitude flight equipment such as unmanned aerial vehicle more and more widely, the demand of low altitude field signal coverage is growing, and the original design of the existing signal coverage base station is for the purpose of covering ground targets, which is difficult to realize good signal coverage in low altitude field, and needs to build a special air base station, which improves the operating cost of the operator. CONTENT OF UTILITY MODEL

[0003] In order to at least partially solve the technical problems in the prior art, such as the need for additional construction of a special air base station to achieve good signal coverage in low altitude field, the utility model is completed.

[0004] The utility model provides a kind of lens antenna, comprising: dragonbord lens, ground radiation unit, air radiation unit, horizontal adjusting mechanism and inclination adjusting mechanism;The center of the dragonbord lens is on reference surface, the reference surface is parallel with horizontal plane or form with horizontal plane with preset angle;The ground radiation unit is set towards the center of the dragonbord lens radiation, and the ground radiation unit is above the reference surface;The air radiation unit is set towards the center of the dragonbord lens radiation, and the air radiation unit is below the reference surface;The horizontal adjusting mechanism is connected with the ground radiation unit and the air radiation unit respectively, for the main radiation direction of the ground radiation unit and the main radiation direction of the air radiation unit in horizontal direction are adjusted synchronously;The inclination adjusting mechanism is connected with the air radiation unit, for the elevation angle of the main radiation direction of the air radiation unit is adjusted alone.

[0005] Optionally, the lens antenna further comprises: mounting seat and substrate;The mounting seat is slidably arranged on the substrate by the horizontal adjusting mechanism, and the mounting seat is between the substrate and the dragonbord lens, the mounting seat can slide left and right around the center of the dragonbord lens under the drive of the horizontal adjusting mechanism;The ground radiation unit is fixedly arranged on the mounting seat, and the air radiation unit is slidably arranged on the mounting seat by the inclination adjusting mechanism, and the air radiation unit can slide up and down around the center of the dragonbord lens under the drive of the inclination adjusting mechanism.

[0006] Optionally, the substrate is vertically arranged with the reference surface.

[0007] Optionally, the ground radiation unit comprises a first feed source and a first reflecting plate, the first feed source is arranged on the first reflecting plate and is arranged to radiate towards the center of the dragonbore lens, and the first reflecting plate is arranged on the mounting base; and / or the space radiation unit comprises a second feed source and a second reflecting plate, the second feed source is arranged on the second reflecting plate and is arranged to radiate towards the center of the dragonbore lens, and the second reflecting plate is slidably arranged on the mounting base through the elevation adjusting mechanism.

[0008] Optionally, the horizontal adjusting mechanism comprises a first sliding rail, a driving rod and a horizontal driving assembly; the first sliding rail is an arc-shaped sliding rail, which is mounted on the base plate, and the mounting base is slidably mounted on the first sliding rail; a transmission column is arranged on the mounting base, which extends away from the dragonbore lens, a limiting sliding groove hole is formed on the transmission column, which is an elongated hole, the driving rod is arranged in the limiting sliding groove hole, and the length direction of the driving rod is perpendicular to the reference surface; the horizontal driving assembly is connected with the driving rod, which is used for driving the driving rod to linearly translate, and then driving the transmission column and the mounting base to slide along the first sliding rail through the driving rod.

[0009] Optionally, two first sliding rails are arranged, which are parallel to each other and arranged on the base plate in an up-down manner; the top and the bottom of the mounting base are slidably mounted on the two first sliding rails through pulleys, respectively.

[0010] Optionally, the horizontal driving assembly comprises a second sliding rail, a horizontal driving motor, a driving screw and a driving seat; the second sliding rail is a straight sliding rail, which is mounted on the base plate, and the driving rod is slidably mounted on the second sliding rail; two connecting seats are arranged on the side of the base plate facing the mounting base, which are spaced apart in a horizontal direction, and the two ends of the driving screw are rotatably connected with the two connecting seats, respectively; the driving seat is sleeved on the driving screw and is threadedly connected with the driving screw, and the bottom end of the driving rod is connected with the driving seat; the horizontal driving motor is connected with one end of the driving screw, which is used for driving the driving screw to rotate, and then driving the driving seat to move along the driving screw through the driving screw, and further driving the driving rod to slide along the second sliding rail.

[0011] Optionally, two second sliding rails are arranged, which are parallel to each other and arranged on the base plate in an up-down manner; the top and the bottom of the driving rod are slidably mounted on the two second sliding rails through pulleys, respectively.

[0012] Optionally, a position corresponding to the transmission column is formed with a clearance hole on the substrate, the clearance hole is a horizontally arranged long hole, and the end of the transmission column away from the mounting base passes out of the clearance hole.

[0013] Optionally, the tilt adjusting mechanism comprises a third slide rail, a tilt driving motor, a gear and an arc-shaped rack; the third slide rail is an arc-shaped slide rail, which is mounted on the mounting base, and the skyward radiation unit is slidably mounted on the third slide rail; the arc-shaped rack is mounted on the mounting base and arranged in parallel with the third slide rail, and the gear is in meshing connection with the arc-shaped rack; the tilt driving motor is connected with the skyward radiation unit and the gear respectively, for driving the gear to rotate, and then driving the skyward radiation unit to slide along the third slide rail through the meshing of the gear and the arc-shaped rack.

[0014] Optionally, the third slide rail adopts two, the two third slide rails are arranged in parallel and side by side on the mounting base, and the arc-shaped rack is located between the two third slide rails; the left and right ends of the skyward radiation unit are slidably mounted on the two third slide rails through pulleys respectively.

[0015] Optionally, the angle between the main radiation direction of the ground radiation unit and the reference plane is a fixed value, which is in the range of 3°-15°; and / or, the angle between the main radiation direction of the skyward radiation unit and the reference plane is a variable value, which varies in the range of 15°-60°.

[0016] Optionally, the lens antenna further comprises a base and a shell; the base and the shell enclose a containing cavity, and the dragonbord lens, the ground radiation unit, the skyward radiation unit, the horizontal adjusting mechanism and the tilt adjusting mechanism are all arranged in the containing cavity.

[0017] A cable interface is mounted on the base, one end of the cable interface is arranged on the upper surface of the base and in the containing cavity, and the other end of the cable interface is arranged on the lower surface of the base and outside the containing cavity; and / or, the dragonbord lens is fixedly mounted on the base through a support.

[0018] The technical scheme provided by the utility model can have the following beneficial effects:

[0019] The lens antenna, through the horizontal adjusting mechanism, realizes synchronous adjustment of the main radiation direction of the ground radiation unit and the main radiation direction of the air radiation unit in the horizontal direction, through the tilt adjusting mechanism, the main radiation direction of the air radiation unit is adjusted alone, ground coverage demand can be met, good signal coverage of low altitude field is realized, a special air base station needs to be additionally constructed, and the antenna overall structure is simple.

[0020] Other features and advantages of the present application will be set forth in the following description, and in part will become apparent to those skilled in the art upon examination of the following or can be learned by practice of the present application. The objects and other advantages of the present application can be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings. BRIEF DESCRIPTION OF DRAWINGS

[0021] The accompanying drawings are included to provide a further understanding of the present application and are incorporated in and constitute a part of this specification, illustrate embodiments of the present application and serve to explain the principles of the present application, and do not limit the present application.

[0022] Figure 1 A perspective structural schematic view of the lens antenna provided by the present application is shown in the figure;

[0023] Figure 2 A perspective structural schematic view of the lens antenna provided by the present application is shown in the figure;

[0024] Figure 3 A perspective structural schematic view of the lens antenna provided by the present application is shown in the figure;

[0025] Figure 4 A perspective structural schematic view of the lens antenna provided by the present application is shown in the figure;

[0026] Figure 5 A perspective structural schematic view of the lens antenna provided by the present application is shown in the figure;

[0027] In the figure: 1 - ground radiation unit; 11 - first feed source; 12 - first reflecting plate; 2 - air radiation unit; 21 - second feed source; 22 - second reflecting plate; 3 - dragon lens; 4 - mounting seat; 41 - transmission column; 42 - limiting sliding hole; 5 - horizontal adjustment mechanism; 51 - first sliding rail; 52 - driving rod; 53 - horizontal driving assembly; 531 - second sliding rail; 532 - horizontal driving motor; 533 - driving screw; 534 - guide rod; 535 - driving seat; 6 - tilt adjustment mechanism; 61 - third sliding rail; 62 - tilt driving motor; 63 - gear; 64 - arc-shaped rack; 7 - base plate; 71 - connecting seat; 72 - clearance hole; 8 - base; 9 - shell; 10 - support; 20 - cable interface. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the specific embodiments of the present application will be described in detail below with reference to the drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present application, and are not used to limit the present application.

[0029] It should be noted that the orientation or position relationship indicated by various orientation terms is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and do not necessarily describe a specific order or sequence; and in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other at will. It should be understood that when a certain element is said to be "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or there can be intermediate elements; the connection can be classified by type into fixed connection, sliding connection and rotary connection, and in the absence of explicit indication, the connection is generally fixed connection, and the fixed connection can be detachable connection or non-detachable connection.

[0030] In order to solve the problem of the prior art that a special air-to-ground base station needs to be additionally constructed to meet the signal coverage demand in the low-altitude field, the related technology provides a scheme in which a set of base station network can simultaneously construct an air-to-ground network and an air-to-space network, but in this scheme, two completely independent antennas are used to respectively realize signal coverage of the low-altitude field and the ground target, resulting in high production cost, large occupied space, and because the radiation directions of the two sets of antennas are fixed, it leads to great difficulty in installation and debugging, which is not suitable for network optimization demand.

[0031] Specifically, the related art solution adopts an active antenna unit and a passive antenna unit, the passive antenna unit includes a passive antenna array for transmitting a ground beam, and the active antenna unit includes an active antenna array for transmitting a set of air beams in the case that the passive antenna array transmits the ground beam, a plurality of air beams in the set of air beams form a three-dimensional coverage in a vertical plane. The solution is relatively complex in realizing the multi-beam, needs to have both the active antenna array and the passive antenna array, the structure of the antenna is complex, and the volume is large; the active antenna array needs additional power input in the solution, which increases power consumption, and the active antenna array needs to be matched with a related beam shaping control algorithm, needs to be customized and adapted, and is difficult to be widely used; the ground beam is fixedly arranged in the solution, and cannot be adjusted in horizontal direction angle and vertical downward angle, and in actual network construction and optimization process, adjustment of the two angles is particularly important for ground coverage effect.

[0032] It can be seen that the related art solution has the defects of complex structure, large volume, large power consumption, difficult to promote, and difficult to adjust the angle, and in order to better meet the needs of users, the embodiment of the utility model takes the Luneburg lens technology as the basis, and provides a multi-beam air-ground integrated lens antenna, which has reasonable structure design and multi-dimensional adjustment, and can simultaneously meet the requirements of low-altitude and ground coverage. The following will be described in detail through specific embodiments.

[0033] As shown in Figures 2 to 5 The embodiment of the utility model provides a lens antenna, which comprises a Luneburg lens 3, a ground radiation unit 1, an air radiation unit 2, a horizontal adjustment mechanism 5 and a tilt adjustment mechanism 6.

[0034] The center of the Luneburg lens 3 is on a reference plane, and the reference plane is parallel to the horizontal plane or forms a preset included angle with the horizontal plane. The ground radiation unit 1 is arranged to radiate towards the center of the Luneburg lens 3, and the ground radiation unit 1 is above the reference plane. The air radiation unit 2 is arranged to radiate towards the center of the Luneburg lens 3, and the air radiation unit 2 is below the reference plane. The horizontal adjustment mechanism 5 is connected with the ground radiation unit 1 and the air radiation unit 2 respectively, and is used for synchronously adjusting the main radiation direction of the ground radiation unit 1 and the main radiation direction of the air radiation unit 2 in the horizontal direction. The tilt adjustment mechanism 6 is connected with the air radiation unit 2, and is used for separately adjusting the elevation angle of the main radiation direction of the air radiation unit 2.

[0035] In practical applications, the dragonbort lens is a sphere made of multiple layers of materials with different dielectric constants, which can converge the incident electromagnetic waves to a certain point on the spherical surface and return the electromagnetic waves along the original direction through reflection. The dragonbort lens essentially utilizes the refractive properties of multiple layers of media to perform specific beamforming on the antenna. Its structure is like an onion ball, which is composed of a lens and a feed source, and can form a narrow beam through the lens from a single feed source and improve the signal gain. Compared with plate antennas, the dragonbort lens antenna has the characteristics of low loss, high gain, light weight, and precise coverage. At the same time, it has a larger network signal coverage area, a higher base station capacity improvement rate, a lower site construction investment, and a lower energy consumption, which has important significance for cost reduction and efficiency improvement, as well as green energy saving.

[0036] In this embodiment, the horizontal adjustment mechanism is used to simultaneously adjust the main radiation direction of the ground radiation unit and the main radiation direction of the air radiation unit in the horizontal direction, and the tilt adjustment mechanism is used to independently adjust the elevation angle of the main radiation direction of the air radiation unit. This can not only meet the ground coverage requirements, but also achieve good signal coverage in the low-altitude field without the need for additional construction of a dedicated air base, and the overall structure of the antenna is simple. In addition, the ground radiation unit and the air radiation unit share one dragonbort lens, which reduces production costs and makes the overall structure of the antenna more compact, reducing the overall space occupied by the antenna.

[0037] In a specific embodiment, as shown in Figure 2 , Figure 3 and Figure 5 , the lens antenna further comprises a mounting seat 4 and a base plate 7. The dragonbort lens 3 is arranged on one side of the base plate 7. The mounting seat 4 is slidably arranged on the base plate 7 by the horizontal adjustment mechanism 5, and the mounting seat 4 is between the base plate 7 and the dragonbort lens 3. The mounting seat 4 can slide left and right around the center of the dragonbort lens 3 under the drive of the horizontal adjustment mechanism 5, and the sliding track of the mounting seat 4 is parallel to the reference plane. The ground radiation unit 1 is fixedly arranged on the mounting seat 4, and the air radiation unit 2 is slidably arranged on the mounting seat 4 by the tilt adjustment mechanism 6. The air radiation unit 2 can slide up and down around the center of the dragonbort lens 3 under the drive of the tilt adjustment mechanism 6, and the sliding track of the air radiation unit 2 is perpendicular to the reference plane.

[0038] In this embodiment, the mounting seat and the base plate are arranged to support and fix the horizontal adjustment mechanism and the tilt adjustment mechanism, and the overall structure is compact.

[0039] In a specific embodiment, as shown in Figure 2 and Figure 5As shown, the substrate 7 is arranged perpendicularly to the reference plane, so as to realize the synchronous adjustment of the tilt angle of the main radiation direction of the ground radiation unit 1 and the elevation angle of the main radiation direction of the sky radiation unit 2 by adjusting the included angle between the reference plane and the horizontal plane.

[0040] In the embodiment, since the substrate is kept perpendicular to the reference plane, the tilt angle of the substrate is adjusted to adjust the included angle between the reference plane and the horizontal plane, so as to realize the synchronous adjustment of the tilt angle of the main radiation direction of the ground radiation unit and the elevation angle of the main radiation direction of the sky radiation unit.

[0041] In a specific embodiment, as shown in Figure 3 and Figure 5 The ground radiation unit 1 includes a first feed source 11 and a first reflecting plate 12, the first feed source 11 is arranged on the first reflecting plate 12 and is arranged towards the center of the dragon horn lens 3, and the first reflecting plate 12 is arranged on the mounting base 4.

[0042] In the embodiment, the ground radiation unit is used to emit a ground beam.

[0043] The function of the feed source is to radiate the radio frequency power from the feed line to the lens in the form of electromagnetic waves, so as to produce a suitable field distribution on the aperture to form a required sharp beam or shaped beam. At the same time, the feed source also ensures that the power leaked outwards from the edge of the lens is as small as possible, so as to realize as high a gain as possible. The main function of the reflecting plate is to concentrate the signal to the feed source, and the reflecting plate focuses the signal to the feed source by reflecting electromagnetic waves, so as to enhance the receiving and transmitting effect of the signal.

[0044] In a specific embodiment, as shown in Figure 3 and Figure 5 The sky radiation unit 2 includes a second feed source 21 and a second reflecting plate 22, the second feed source 21 is arranged on the second reflecting plate 22 and is arranged towards the center of the dragon horn lens 3, and the second reflecting plate 22 is slidably arranged on the mounting base 4 through the elevation adjustment mechanism 6, so that the second reflecting plate 22 can slide up and down around the center of the dragon horn lens 3, and the plane where the sliding track of the second reflecting plate 22 is located is perpendicular to the reference plane.

[0045] In the embodiment, the sky radiation unit is used to emit a sky beam.

[0046] In a specific embodiment, as shown in Figures 2 to 5 The horizontal adjustment mechanism 5 includes a first sliding rail 51, a driving rod 52 and a horizontal driving assembly 53.

[0047] The first slide rail 51 is an arc-shaped slide rail, which is installed on the base plate 7, and the mounting seat 4 is slidably installed on the first slide rail 51, and the plane where the running path of the first slide rail 51 is located is parallel to the reference plane. The transmission column 41 is arranged on the mounting seat 4, and the transmission column 41 extends away from the dragon-bor lens 3, and the limiting sliding hole 42 is formed in the transmission column 41, the limiting sliding hole 42 is an elongated hole, the hole axis of the limiting sliding hole 42 is perpendicular to the reference plane, and the length direction of the limiting sliding hole 42 is arranged along the axial direction of the transmission column 41. The driving rod 52 is arranged in the limiting sliding hole 42, and the length direction of the driving rod 52 is arranged perpendicular to the reference plane. The horizontal driving assembly 53 is connected with the driving rod 52, and is used for driving the driving rod 52 to linearly translate, so that the driving rod 52 slides relative to the base plate 7, and the sliding direction of the driving rod 52 is parallel to the reference plane and the base plate 7 at the same time, and then the driving rod 52 pushes the transmission column 41 and drives the mounting seat 4 to slide along the first slide rail 51.

[0048] In the embodiment, when the main radiation direction of the ground radiation unit 1 and the main radiation direction of the air radiation unit 2 are synchronously adjusted horizontally, the driving rod 52 pushes the transmission column 41 to move by horizontally sliding along the second slide rail 531 which is parallel to the base plate 7, so that the transmission column 41 drives the mounting seat 4 to horizontally slide around the center of the dragon-bor lens 3 along the first slide rail 51. In this process, since the driving rod 52 slides linearly and the mounting seat 4 slides along an arc, the relative distance between the driving rod 52 and the mounting seat 4 gradually changes with the sliding of the mounting seat 4, and the limiting sliding hole 42 on the transmission column 41 adopts an elongated hole structure to provide a moving space for the relative movement of the mounting seat 4 and the driving rod 52.

[0049] In a specific embodiment, as shown in Figures 2 to 4 The first slide rail 51 adopts two, and the two first slide rails 51 are parallel to each other and arranged on the base plate 7 in an up-down manner. The top and the bottom of the mounting seat 4 are slidably installed on the two first slide rails 51 through pulleys respectively.

[0050] In the embodiment, the two first slide rails are arranged to make the sliding of the mounting seat more stable.

[0051] In a specific embodiment, as shown in Figures 2 to 5 The horizontal driving assembly 53 includes a second slide rail 531, a horizontal driving motor 532, a driving screw 533 and a driving seat 535.

[0052] The second slide rail 531 is a linear slide rail, mounted on the base plate 7. The drive rod 52 is slidably mounted on the second slide rail 531. The length direction of the second slide rail 531 is parallel to both the reference plane and the base plate 7. Two connecting seats 71 are provided on the side of the base plate 7 facing the mounting seat 4. The two connecting seats 71 are spaced apart in the horizontal direction. The two ends of the drive screw 533 are rotatably connected to the two connecting seats 71, effectively setting the drive screw 533 on the base plate 7 via the two connecting seats 71. The length direction of the drive screw 533 is parallel to the length direction of the second slide rail 531, and the drive screw 533 can rotate around its own axis. The drive seat 535 is fitted onto the drive screw 533 and threadedly connected to it. The bottom end of the drive rod 52 is connected to the drive seat 535. Specifically, the drive seat 535 has a screw hole and a drive hole. The drive seat 535 is threadedly connected to the drive screw 533 through the screw hole, and the drive rod 52 passes through the drive hole of the drive seat 535. The horizontal drive motor 532 is connected to one end of the drive screw 533 to drive the drive screw 533 to rotate. The drive screw 533 then drives the drive seat 535 to move along the drive screw 533, thereby driving the drive rod 52 to slide along the second slide rail 531.

[0053] In this embodiment, when the main radiation direction of the ground radiation unit 1 and the main radiation direction of the air radiation unit 2 are adjusted horizontally at the same time, the horizontal drive motor 532 drives the drive screw 533 to rotate, thereby driving the drive seat 535 to move along the drive screw 533, and then driving the drive rod 52 to slide horizontally along the second slide rail 531, thereby driving the mounting seat 4 to slide.

[0054] In one specific implementation, such as Figures 2 to 4 As shown, two second slide rails 531 are used, and the two second slide rails 531 are parallel to each other and arranged vertically on the base plate 7. The top and bottom of the drive rod 52 are slidably mounted on the two second slide rails 531 by pulleys.

[0055] In this embodiment, by setting two second slide rails, the sliding of the drive rod becomes more stable.

[0056] In one specific implementation, such as Figures 2 to 5 As shown, the horizontal drive assembly 53 further includes a guide rod 534. Both ends of the guide rod 534 are fixedly connected to two connecting seats 71, and the guide rod 534 is arranged parallel to the drive screw 533. This means the guide rod 534 is mounted on the base plate 7 via the two connecting seats 71, and the length direction of the guide rod 534 is also parallel to the length direction of the second slide rail 531. A drive seat 535 is also fitted onto the guide rod 534 and slidably connected to it. A guide hole is formed on the drive seat 535, through which the drive seat 535 is slidably mounted on the guide rod 534 and slidably connected to it.

[0057] In the embodiment, the guide rod is arranged to limit the movement direction of the driving seat, and prevent the rotation and deflection of the device.

[0058] In one specific embodiment, as shown in Figure 4 , two guide rods 534 are arranged in parallel and vertically, and the driving screw 533 is located between the two guide rods 534. The driving seat 535 is specifically formed with two guide holes, and the driving seat 535 is correspondingly and slidingly arranged on the two guide rods 534 through the two guide holes.

[0059] In the embodiment, the two guide rods are arranged on both sides of the driving screw, so that the driving seat runs more stably.

[0060] In one specific embodiment, as shown in Figure 2 , Figure 3 and Figure 5 , the base plate 7 is formed with a clearance hole 72 corresponding to the position of the transmission column 41. The clearance hole 72 is a horizontally arranged long hole, and the end of the transmission column 41 away from the mounting seat 4 passes through the clearance hole 72.

[0061] In the embodiment, the clearance hole 72 is formed on the base plate 7 to provide a space for the transmission column 41. Through such design, the installation distance between the mounting seat 4 and the base plate 7 is greatly reduced, and the overall structure of the antenna is more compact.

[0062] In one specific embodiment, as shown in Figure 3 , the tilt adjustment mechanism 6 includes a third sliding rail 61, a tilt driving motor 62, a gear 63, and an arc-shaped rack 64.

[0063] The third sliding rail 61 is an arc-shaped sliding rail mounted on the mounting seat 4. The air radiating unit 2 is slidingly mounted on the third sliding rail 61. The plane where the running path of the air radiating unit 2 along the third sliding rail 61 is located is perpendicular to the reference plane. The arc-shaped rack 64 is mounted on the mounting seat 4 and arranged in parallel and side by side with the third sliding rail 61. The running path of the air radiating unit 2 along the arc-shaped rack 64 is parallel to the running path of the air radiating unit 2 along the third sliding rail 61. The gear 63 is in meshing connection with the arc-shaped rack 64. The tilt driving motor 62 is connected with the air radiating unit 2 and the gear 63. Specifically, the tilt driving motor 62 is mounted on the back surface of the second reflecting plate 22 of the air radiating unit 2. The tilt driving motor 62 is also axially connected with the gear 63 located on the back surface of the second reflecting plate 22 of the air radiating unit 2. That is, the output shaft of the tilt driving motor 62 is coaxially fixedly connected with the gear 63, for driving the gear 63 to rotate, and then driving the air radiating unit 2 to slide along the third sliding rail 61 through the meshing of the gear 63 and the arc-shaped rack 64.

[0064] In the embodiment, when the elevation angle of the main radiation direction of the space radiation unit 2 is adjusted separately, the tilt driving motor 62 drives the gear 63 to rotate, and through the relative movement between the gear 63 and the arc-shaped rack 64, the second reflecting plate 22 of the space radiation unit 2 is driven to slide around the center of the dragon's eye lens 3 along the third sliding rail 61, so as to realize the separate adjustment of the elevation angle of the main radiation direction of the space radiation unit 2.

[0065] In a specific embodiment, as shown in the figure, Figure 3 The third sliding rail 61 is arranged in parallel and side by side on the mounting seat 4, and the arc-shaped rack 64 is located between the two third sliding rails 61. The left and right ends of the second reflecting plate 22 of the space radiation unit 2 are respectively slidably installed on the two third sliding rails 61 through pulleys.

[0066] In the embodiment, by arranging two third sliding rails, the sliding of the space radiation unit is more stable.

[0067] In a specific embodiment, the angle between the main radiation direction of the ground radiation unit 1 and the reference plane is a fixed value, which is within the range of 3°-15°.

[0068] In a specific embodiment, the angle between the main radiation direction of the space radiation unit 2 and the reference plane is a variable value, which varies within the range of 15°-60°.

[0069] In a specific embodiment, as shown in the figure, Figures 1 to 5 The lens antenna further comprises a base 8 and a shell 9. The base 8 and the shell 9 form a containing cavity, and the dragon's eye lens 3, the ground radiation unit 1, the space radiation unit 2, the horizontal adjustment mechanism 5 and the tilt adjustment mechanism 6 are all arranged in the containing cavity. In addition, the mounting seat 4 and the substrate 7 are also arranged in the containing cavity, and the bottom edge of the substrate 7 is fixedly connected with the upper surface of the base 8.

[0070] In the embodiment, by forming the containing cavity through the base 8 and the shell 9, the ground radiation unit 1, the space radiation unit 2, the dragon's eye lens 3, the mounting seat 4, the horizontal adjustment mechanism 5, the tilt adjustment mechanism 6 and the substrate 7 can be prevented from being directly exposed to the external environment, thereby playing a dustproof and waterproof protection role.

[0071] In a specific embodiment, as shown in the figure, Figures 2 to 5 A cable interface 20 is mounted on the base 8, one end of the cable interface 20 is arranged on the upper surface of the base 8 and is located in the containing cavity, and the other end of the cable interface 20 is arranged on the lower surface of the base 8 and is located outside the containing cavity.

[0072] In the embodiment, the cable interface 20 is installed on the base 8, one end of the cable interface 20 is in the accommodating cavity, and the other end of the cable interface 20 is outside the accommodating cavity. The first feed source 11, the second feed source 21, the horizontal driving motor 532, and the tilt driving motor 62 are respectively connected with the external control circuit through the cable interface 20. Since the other end of the cable interface 20 is arranged on the lower surface of the base 8 and is outside the accommodating cavity, rainwater can be prevented from flowing into the accommodating cavity from the gap between the cable interface 20 and the base 8, thereby improving the sealing performance of the lens antenna.

[0073] In a specific embodiment, as shown in Figure 2 、 Figure 4 and Figure 5 , the dragonbort lens 3 is fixedly installed on the base 8 through the support 10.

[0074] Specifically, the support 10 can adopt four, the four supports 10 are divided into two groups, each group includes two supports 10, and one group of supports is located on one side of the dragonbort lens 3, and the other group of supports is located on the other side of the dragonbort lens 3. Each support 10 includes a rod part and an arc-shaped part, the bottom end of the rod part is connected with the upper surface of the base 8, the arc-shaped part includes an arc-shaped outer side and an arc-shaped inner side, and the top end of the rod part is connected with the middle part of the outer side of the arc-shaped part. The two supports in the same group are oppositely arranged, that is, the inner sides of the arc-shaped parts of the two supports are oppositely arranged, and the two supports in one group are symmetrically arranged with the two supports in the other group about the dragonbort lens. The two supports in one group clamp one side of the dragonbort lens 3, and the two supports in the other group clamp the other side of the dragonbort lens 3.

[0075] In the embodiment, the dragonbort lens 3 is fixedly installed on the base 8 through the support 10, and through such a design, the installation of the dragonbort lens 3 is more convenient.

[0076] The working principle of the embodiment is as follows:

[0077] During installation and debugging, the included angle between the reference surface and the horizontal surface is adjusted to synchronously adjust the tilt angle of the main radiation direction of the ground radiation unit 1 and the elevation angle of the main radiation direction of the space radiation unit 2, until the tilt angle of the main radiation direction of the ground radiation unit 1 is adjusted, and then the whole antenna is connected and fixed with the external support column; the space radiation unit 2 is driven by the tilt adjusting mechanism 6 to slide up and down around the center of the dragonbort lens 3 to individually adjust the elevation angle of the main radiation direction of the space radiation unit 2, so that the installation and debugging of the lens antenna are flexible and convenient; in addition, the horizontal adjusting mechanism 5 is arranged to enable the main radiation direction of the ground radiation unit 1 and the main radiation direction of the space radiation unit 2 to be synchronously adjusted in the horizontal direction, so that the installation and debugging of the lens antenna are more convenient.

[0078] The lens antenna provided by the embodiment of the utility model has the advantages of simple structure, reasonable design, low production cost, small space occupation, flexible and convenient installation and debugging, and meets the use requirements of users.

[0079] Finally, it should be pointed out that: the above embodiments are only used to illustrate the technical solutions of the utility model, and not to limit them; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model.

Claims

1. A lens antenna, characterized by The application relates to a radar antenna, which comprises a dragon's eye lens, a ground radiation unit, an air radiation unit, a horizontal adjusting mechanism and a tilt adjusting mechanism. The center of the dragon's eye lens is located on a reference plane which is parallel to or forms a preset angle with a horizontal plane; the ground radiation unit is arranged to radiate towards the center of the dragon's eye lens and is located above the reference plane; the air radiation unit is arranged to radiate towards the center of the dragon's eye lens and is located below the reference plane; the horizontal adjusting mechanism is connected with the ground radiation unit and the air radiation unit respectively and is used for synchronously adjusting the main radiation directions of the ground radiation unit and the air radiation unit in the horizontal direction. The tilt adjusting mechanism is connected with the air radiation unit and is used for separately adjusting the elevation angle of the main radiation direction of the air radiation unit. The application further relates to a radar antenna, which comprises a mounting base and a base plate.

2. The lens antenna of claim 1, wherein, The mounting base is slidably arranged on the base plate through the horizontal adjusting mechanism and is located between the base plate and the dragon's eye lens; the mounting base can slide left and right around the center of the dragon's eye lens under the drive of the horizontal adjusting mechanism; the ground radiation unit is fixedly arranged on the mounting base; the air radiation unit is slidably arranged on the mounting base through the tilt adjusting mechanism and can slide up and down around the center of the dragon's eye lens under the drive of the tilt adjusting mechanism. The base plate is vertically arranged with the reference plane. The ground radiation unit comprises a first feed source and a first reflecting plate, the first feed source is arranged on the first reflecting plate and is arranged to radiate towards the center of the dragon's eye lens, and the first reflecting plate is arranged on the mounting base; and / or the air radiation unit comprises a second feed source and a second reflecting plate, the second feed source is arranged on the second reflecting plate and is arranged to radiate towards the center of the dragon's eye lens, and the second reflecting plate is slidably arranged on the mounting base through the tilt adjusting mechanism.

3. The lens antenna of claim 2, wherein, The horizontal adjusting mechanism comprises a first sliding rail, a driving rod and a horizontal driving assembly; the first sliding rail is an arc-shaped sliding rail, is arranged on the base plate, and the mounting base is slidably arranged on the first sliding rail; a transmission column is arranged on the mounting base and extends away from the dragon's eye lens, a limiting sliding groove hole is formed in the transmission column, the limiting sliding groove hole is an elongated hole, the driving rod is arranged in the limiting sliding groove hole, and the length direction of the driving rod is vertically arranged with the reference plane; the horizontal driving assembly is connected with the driving rod and is used for driving the driving rod to linearly translate, then the driving rod pushes the transmission column and drives the mounting base to slide along the first sliding rail.

4. The lens antenna of claim 2, wherein, Two first sliding rails are arranged, the two first sliding rails are parallel to each other and are arranged on the base plate in an up-down mode; the top and the bottom of the mounting base are slidably arranged on the two first sliding rails through pulleys respectively.

5. The lens antenna of claim 2, wherein, ​ 6. The lens antenna of claim 5, wherein, ​ 7. The lens antenna of claim 5, wherein, The horizontal driving assembly comprises a second sliding rail, a horizontal driving motor, a driving screw and a driving seat; the second sliding rail is a straight sliding rail, which is installed on the base plate, and the driving rod is slidably installed on the second sliding rail; the side of the base plate facing the mounting seat is provided with two connecting seats, which are arranged in a horizontal direction; the two ends of the driving screw are rotatably connected with the two connecting seats respectively; the driving seat is sleeved on the driving screw and is threadedly connected with the driving screw; the bottom end of the driving rod is connected with the driving seat; the horizontal driving motor is connected with one end of the driving screw, and is used for driving the driving screw to rotate, and then driving the driving seat to move along the driving screw, and further driving the driving rod to slide along the second sliding rail.

8. The lens antenna of claim 7, wherein, The second sliding rail is adopted in two, and the two second sliding rails are parallel to each other and arranged on the base plate in an up-down direction; the top and bottom of the driving rod are slidably installed on the two second sliding rails through pulleys respectively.

9. The lens antenna of claim 5, wherein, The base plate is formed with a clearance hole at a position corresponding to the transmission column, the clearance hole is a horizontally arranged long hole, and the end of the transmission column away from the mounting seat penetrates out of the clearance hole.

10. The lens antenna of claim 2, wherein, The tilt adjusting mechanism comprises a third sliding rail, a tilt driving motor, a gear and an arc-shaped rack; the third sliding rail is an arc-shaped sliding rail, which is installed on the mounting seat, and the space radiation unit is slidably installed on the third sliding rail; the arc-shaped rack is installed on the mounting seat and arranged in parallel with the third sliding rail; the gear is engagedly connected with the arc-shaped rack; the tilt driving motor is connected with the space radiation unit and the gear respectively, and is used for driving the gear to rotate, and then driving the space radiation unit to slide along the third sliding rail through the gear and the arc-shaped rack.

11. The lens antenna of claim 10, wherein, The third sliding rail is adopted in two, and the two third sliding rails are parallel to each other and arranged side by side on the mounting seat, and the arc-shaped rack is located between the two third sliding rails; the left and right ends of the space radiation unit are slidably installed on the two third sliding rails through pulleys respectively.

12. The lens antenna of claim 1, wherein, The included angle between the main radiation direction of the ground radiation unit and the reference plane is a fixed value, which is within the range of 3°-15°; and / or, the included angle between the main radiation direction of the space radiation unit and the reference plane is a variable value, which varies within the range of 15°-60°.

13. The lens antenna of claim 1, wherein, Further comprising: a base and a shell; The base and the shell form a containing cavity, and the dragonb ball lens, the ground radiation unit, the space radiation unit, the horizontal adjusting mechanism and the tilt adjusting mechanism are arranged in the containing cavity; A cable interface is installed on the base, one end of the cable interface is arranged on the upper surface of the base and is located in the containing cavity, and the other end of the cable interface is arranged on the lower surface of the base and is located outside the containing cavity; and / or, the dragonb ball lens is fixedly installed on the base through a support.

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