An angle-adjustable folded log-periodic antenna

Abstract

The utility model discloses an angle adjustable's folding logarithmic periodic antenna, including base, antenna mast, folding drive subassembly, angle adjustment subassembly and two antenna dipoles, antenna mast rotates the assembly in base, and the drive end of angle adjustment subassembly is connected with antenna mast transmission, is equipped with the accommodation space in antenna mast, and the both sides wall of antenna mast X axle direction is equipped with the avoidance opening respectively, and the avoidance opening is linked with the accommodation space, folding drive subassembly sets up in the accommodation space, and two antenna dipoles are connected with the drive end of folding drive subassembly respectively, and folding drive subassembly is used for driving antenna dipole and changes between the unfolding state and the folding state. Angle adjustable's folding logarithmic periodic antenna through setting folding drive subassembly and angle adjustment subassembly, has realized to the folding of logarithmic periodic antenna, has reduced the volume and size of antenna, has conveniently carried and stored, also can adjust the orientation of antenna dipole through angle adjustment subassembly, adapts different application scene and working frequency.

Description

Technical Field

[0001] This invention relates to the field of log-periodic antennas, and more particularly to an angle-adjustable foldable log-periodic antenna. Background Technology

[0002] A log-periodic antenna is a specially shaped antenna commonly used in communication systems in the microwave and millimeter-wave bands. It typically consists of a series of radiating elements distributed in a specific geometry, arranged according to a certain pattern to form a log-periodic radiation characteristic. This design allows for a wide operating bandwidth and high gain, making it suitable for communication systems requiring high performance.

[0003] Most existing log-periodic antennas are huge, inconvenient to carry, and difficult to set up, making them very troublesome to transport. In addition, the pointing angle of the antenna is difficult to adjust. Utility Model Content

[0004] The purpose of this invention is to propose an angle-adjustable foldable log-periodic antenna to solve the problems of the large size of the aforementioned log-periodic antennas, which makes them inconvenient to carry and difficult to adjust the pointing angle.

[0005] To achieve this objective, the present invention adopts the following technical solution: This utility model provides an angle-adjustable foldable log-periodic antenna, including a base, an antenna mast, a folding drive assembly, an angle adjustment assembly, and two antenna elements; The antenna mast is rotatably mounted on the base, and the drive end of the angle adjustment component is connected to the antenna mast in a transmission connection, so that the antenna mast rotates about its own axis as the rotation axis; The antenna mast has an accommodating space inside; the two side walls of the antenna mast in the X-axis direction are respectively provided with clearance openings, and the clearance openings are connected to the accommodating space. The folding drive assembly is disposed in the accommodating space, and the two antenna elements are respectively connected to the drive end of the folding drive assembly; one antenna element extends from the clearance opening at one end in the X-axis direction, and the other antenna element extends from the clearance opening at the other end in the X-axis direction. The folding drive assembly is used to drive the antenna elements to switch between the unfolded state and the folded state.

[0006] In the angle-adjustable folding log-periodic antenna, the folding drive assembly includes a drive cylinder, a slide rod, a rack, and two transmission rods. The fixed end of the drive cylinder is located at the bottom of the accommodating space, and the slide rod is slidably mounted on the side wall of the accommodating space. The drive end of the drive cylinder is connected to the slide rod, causing the slide rod to move along the Z-axis. The rack is located on the slide rod, and both ends of the rack in the X-axis direction are provided with first transmission tooth surfaces. One end of one transmission rod meshes with the first transmission tooth surface at one end of the rack in the X-axis direction, and one end of the other transmission rod meshes with the first transmission tooth surface at the other end of the rack in the X-axis direction. The other ends of the two transmission rods are respectively connected to the antenna vibrator on the corresponding side, so that the antenna vibrator extends out from the clearance opening on the corresponding side. The two transmission rods are symmetrically arranged about the central axis of the rack.

[0007] In the angle-adjustable folded log-periodic antenna, the transmission rod includes an integrally formed fan-shaped part, a rotating connection part, and an antenna connection part. The arc-shaped sidewall of the fan-shaped part is provided with a second transmission tooth surface, and the transmission rod meshes with the first transmission tooth surface through the second transmission tooth surface. The rotating connection part is rotatably connected to the sidewall of the accommodating space, and the antenna connection part is connected to the antenna vibrator.

[0008] In the angle-adjustable folding log-periodic antenna, the folding drive assembly further includes a limiting plate, a limiting link, and a limiting connector. The limiting plate is fixed to the bottom of the accommodating space, and the limiting plate is provided with a limiting groove along the Z-axis direction. The limiting connector is disposed at the drive end of the drive cylinder. One end of the limiting link is fixed to the limiting connector, and the other end of the limiting link is inserted into the limiting groove.

[0009] In the angle-adjustable folded log-periodic antenna, the antenna element includes a connecting crossbar, a first radiating element, and a second radiating element; The first radiating unit is disposed on one end face of the connecting crossbar in the Y-axis direction, and the second radiating unit is disposed on the other end face of the connecting crossbar in the Y-axis direction; the first radiating unit and the second radiating unit are symmetrically arranged with the central axis of the connecting crossbar in the Y-axis direction as the axis of symmetry; The first radiation unit and the second radiation unit each include a plurality of metal conductors, which are spaced apart along the X-axis, and the length of the metal conductors gradually decreases from the end near the transmission rod to the end away from the transmission rod. One end of the connecting crossbar in the X-axis direction is connected to the transmission rod.

[0010] In the angle-adjustable folded log-periodic antenna, the angle adjustment component includes a drive motor, a transmission belt, a transmission wheel, and a driven wheel. The driven wheel is coaxially disposed at the bottom of the antenna mast. The transmission wheel is mounted on the drive end of the drive motor, and the transmission belt is sleeved on the outer periphery of the transmission wheel and the driven wheel.

[0011] In the angle-adjustable folded log-periodic antenna, the base has a cavity, the driven wheel passes through the upper surface of the base and is located in the cavity, and the drive end of the drive motor passes through the upper surface of the base and is connected to the transmission wheel.

[0012] One of the technical solutions of this utility model can have the following beneficial effects: The angle-adjustable foldable log-periodic antenna achieves folding by setting a folding drive component and an angle adjustment component. It can be folded up when not in use, reducing the size and volume of the antenna, making it convenient to carry and store. At the same time, the orientation of the antenna element can be adjusted as needed by the angle adjustment component, which can adapt to different application scenarios and operating frequencies. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of one embodiment of the present utility model; Figure 2 This is a schematic diagram of the connection relationship in one embodiment of the present utility model; Figure 3 yes Figure 2 A magnified view of a section at point A in the middle; Figure 4 yes Figure 2 A magnified view of a section at point B in the middle; In the attached diagram: 1. Base; 2. Antenna mast; 3. Folding drive assembly; 4. Angle adjustment assembly; 5. Antenna vibrator. Cavity 10; Accommodation space 20, clearance opening 21; Drive cylinder 31, slide bar 32, rack 33, transmission rod 34; Limiting plate 35, limiting connecting rod 36, limiting connecting seat 37; Drive motor 41, transmission belt 42, transmission wheel 43, driven wheel 44; Connecting crossbar 51; Metal conductor 52; Fan-shaped part 341, rotating connecting part 342, antenna connecting part 343; limiting slide 350. Detailed Implementation

[0014] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0015] In the description of this utility model, it should be understood that the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" and "second" may explicitly or implicitly include one or more of these features, used to distinguish descriptive features, without any order or emphasis.

[0016] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0017] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0018] Please refer to Figures 1-4 This utility model provides an angle-adjustable foldable log-periodic antenna, including a base 1, an antenna mast 2, a folding drive assembly 3, an angle adjustment assembly 4, and two antenna elements 5; The antenna mast 2 is rotatably mounted on the base 1, and the driving end of the angle adjustment component 4 is connected to the antenna mast 2 in a transmission manner, so that the antenna mast 2 rotates about its own axis as the rotation axis; The antenna mast 2 has an accommodating space 20 inside; the two side walls of the antenna mast 2 in the X-axis direction are respectively provided with clearance openings 21, and the clearance openings 21 are connected to the accommodating space 20. The folding drive assembly 3 is disposed in the accommodating space 20, and the two antenna elements 5 are respectively connected to the drive end of the folding drive assembly 3; one antenna element 5 extends out from the clearance opening 21 at one end in the X-axis direction, and the other antenna element 5 extends out from the clearance opening 21 at the other end in the X-axis direction. The folding drive assembly 3 is used to drive the antenna elements 5 to switch between the unfolded state and the folded state.

[0019] The antenna mast 2 protects the folding drive assembly 3 and ensures the stability of the log-periodic antenna after installation, thus achieving stable communication. The angle adjustment assembly 4 rotates the antenna mast 2 to change the orientation of the antenna element 5, aligning it with the target signal source. The folding drive assembly 3 drives the antenna element 5 to unfold or fold.

[0020] The angle-adjustable foldable log-periodic antenna achieves folding by setting a folding drive component 3 and an angle adjustment component 4. It can be folded up when not in use, reducing the size and volume of the antenna, making it convenient to carry and store. At the same time, the orientation of the antenna element 5 can be adjusted by the angle adjustment component 4 as needed, which can adapt to different application scenarios and operating frequencies.

[0021] Specifically, the folding drive assembly 3 includes a drive cylinder 31, a slide rod 32, a rack 33, and two transmission rods 34. The fixed end of the drive cylinder 31 is located at the bottom of the accommodating space 20, and the slide rod 32 is slidably mounted on the side wall of the accommodating space 20. The drive end of the drive cylinder 31 is connected to the slide rod 32, causing the slide rod 32 to move along the Z-axis. The rack 33 is located on the slide rod 32, and both ends of the rack 33 in the X-axis direction are provided with first transmission tooth surfaces. One end of one transmission rod 34 meshes with the first transmission tooth surface at one end of the rack 33 in the X-axis direction, and one end of the other transmission rod 34 meshes with the first transmission tooth surface at the other end of the rack 33 in the X-axis direction. The other ends of the two transmission rods 34 are respectively connected to the antenna vibrator 5 on the corresponding side, so that the antenna vibrator 5 extends out from the clearance opening 21 on the corresponding side. The two transmission rods 34 are symmetrically arranged about the central axis of the rack 33.

[0022] The rack 33 on the slide bar 32 meshes with the two transmission rods 34, respectively, to drive the antenna vibrator 5 to unfold or fold through the cooperation of the rack 33 and the transmission rods 34. This structure provides accurate and reliable transmission, and is more compact, occupying less space.

[0023] When the antenna element 5 needs to be unfolded, the driving end of the driving cylinder 31 drives the slide rod 32 to slide downward, and the rack 33 moves downward with the slide rod 32. The two transmission rods 34 rotate upward about their own rotation axes in a meshing transmission manner, thereby driving the antenna element 5 to rotate upward, so as to achieve the purpose of unfolding the antenna element 5. Moreover, since both sides of the rack 33 are meshed with the corresponding transmission rod 34, the antenna elements 5 on both sides unfold at the same angle during the downward sliding of the slide rod 32.

[0024] When the antenna element 5 needs to be folded, the driving end of the driving cylinder 31 drives the slide rod 32 to slide upward, and the rack 33 moves upward with the slide rod 32. The two transmission rods 34 rotate downward about their own rotation axes in a meshing transmission manner, thereby driving the antenna element 5 to rotate downward, so as to achieve the purpose of folding the antenna element 5. Moreover, since both sides of the rack 33 are meshed with the corresponding transmission rod 34, the antenna elements 5 on both sides fold at the same angle at the same time during the upward sliding of the slide rod 32.

[0025] Furthermore, the transmission rod 34 includes an integrally formed fan-shaped portion 341, a rotating connection portion 342, and an antenna connection portion 343. The arc-shaped sidewall of the fan-shaped portion 341 is provided with a second transmission tooth surface, and the transmission rod 34 meshes with the first transmission tooth surface through the second transmission tooth surface. The rotating connection portion 342 is rotatably connected to the sidewall of the accommodating space 20, and the antenna connection portion 343 is connected to the antenna vibrator 5.

[0026] With the above structure, the first transmission tooth surface meshes with the second transmission tooth surface. When the slide bar 32 moves along the Z-axis, the transmission rod 34 will rotate around the connection between the rotating connection part 342 and the accommodating space 20 as the axis of rotation, thereby driving the antenna vibrator 5 to rotate, so as to realize the folding or unfolding of the antenna vibrator 5.

[0027] Furthermore, the folding drive assembly 3 also includes a limiting plate 35, a limiting link 36, and a limiting connecting seat 37. The limiting plate 35 is fixed to the bottom of the accommodating space 20, and the limiting plate 35 is provided with a limiting groove 350 along the Z-axis direction. The limiting connecting seat 37 is disposed at the driving end of the drive cylinder 31. One end of the limiting link 36 is fixed to the limiting connecting seat 37, and the other end of the limiting link 36 is inserted into the limiting groove 350.

[0028] When the limiting link 36 moves to the lowest point of the limiting slide 350, the antenna element 5 is in a folded state; when the limiting link 36 moves to the highest point of the limiting slide 350, the antenna element 5 is in an unfolded state. Using this structure, the cooperation of the limiting plate 35, the limiting link 36, and the limiting connecting seat 37 restricts the range of motion of the driving end of the driving cylinder 31, thereby limiting the range of motion of the slide bar 32 and preventing angular deviation of the antenna element 5 after unfolding.

[0029] Specifically, the antenna element 5 includes a connecting crossbar 51, a first radiating element, and a second radiating element; The first radiating unit is disposed on one end face of the connecting crossbar 51 in the Y-axis direction, and the second radiating unit is disposed on the other end face of the connecting crossbar 51 in the Y-axis direction; the first radiating unit and the second radiating unit are symmetrically arranged with the central axis in the Y-axis direction of the connecting crossbar 51 as the axis of symmetry. The first radiation unit and the second radiation unit both include a plurality of metal conductors 52, which are spaced apart along the X-axis, and the length of the metal conductors 52 gradually decreases from one end near the transmission rod 34 to the other end away from the transmission rod 34. One end of the connecting crossbar 51 in the X-axis direction is connected to the transmission rod 34.

[0030] The antenna element 5 can refer to the radiating element of an existing log-periodic antenna. The first radiating element and the second radiating element are symmetrically arranged with the central axis of the Y-axis connecting the crossbar 51 as the axis of symmetry. Both the first radiating element and the second radiating element are composed of several metal conductors 52. The metal conductors 52 are arranged in a log-periodic form with equal spacing. The length and spacing of each metal conductor 52 vary in a logarithmic proportion.

[0031] Specifically, the antenna element 5 includes a connecting crossbar 51, a first radiating element, and a second radiating element; The first radiating unit is disposed on one end face of the connecting crossbar 51 in the Y-axis direction, and the second radiating unit is disposed on the other end face of the connecting crossbar 51 in the Y-axis direction; the first radiating unit and the second radiating unit are symmetrically arranged with the central axis in the Y-axis direction of the connecting crossbar 51 as the axis of symmetry. The first radiation unit and the second radiation unit both include a plurality of metal conductors 52, which are spaced apart along the X-axis, and the length of the metal conductors 52 gradually decreases from one end near the transmission rod 34 to the other end away from the transmission rod 34. One end of the connecting crossbar 51 in the X-axis direction is connected to the transmission rod 34.

[0032] The antenna element 5 can refer to the radiating element of an existing log-periodic antenna. The first radiating element and the second radiating element are symmetrically arranged with the central axis of the Y-axis connecting the crossbar 51 as the axis of symmetry. Both the first radiating element and the second radiating element are composed of several metal conductors 52. The metal conductors 52 are arranged in a log-periodic form with equal spacing. The length and spacing of each metal conductor 52 vary in a logarithmic proportion.

[0033] The angle adjustment assembly 4 includes a drive motor 41, a transmission belt 42, a transmission wheel 43, and a driven wheel 44. The driven wheel 44 is coaxially disposed at the bottom of the antenna mast 2. The transmission wheel 43 is installed at the drive end of the drive motor 41, and the transmission belt 42 is sleeved on the outer periphery of the transmission wheel 43 and the driven wheel 44.

[0034] With the above structure, the drive motor 41 drives the driven wheel 44 to rotate through the cooperation of the transmission wheel 43 and the transmission belt 42, so as to drive the antenna mast 2 to rotate around its own axis, thereby allowing the orientation of the antenna elements 5 on both sides of the antenna mast 2 to be adjusted as needed so that the antenna elements 5 are aligned with the target signal source.

[0035] Preferably, the base 1 has a cavity 10, the driven wheel 44 passes through the upper surface of the base 1 and is located in the cavity 10, and the driving end of the drive motor 41 passes through the upper surface of the base 1 and is connected to the transmission wheel 43 for transmission.

[0036] By adopting the above structure, the transmission belt 42, transmission wheel 43 and driven wheel 44 are hidden in the cavity 10, making the overall appearance of the stacked log-periodic antenna simpler and avoiding damage to the transmission structure caused by collisions with external objects.

[0037] The technical principles of this utility model have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this utility model and should not be construed as limiting the scope of protection of this utility model in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this utility model without inventive effort, and these equivalent modifications or substitutions are all included within the scope defined by the claims of this application.

Claims

1. An angle-adjustable folded log-periodic antenna, characterized in that, Includes a base, antenna mast, folding drive assembly, angle adjustment assembly, and two antenna elements; The antenna mast is rotatably mounted on the base, and the drive end of the angle adjustment component is connected to the antenna mast in a transmission connection, so that the antenna mast rotates about its own axis as the rotation axis; The antenna mast has an accommodating space inside; the two side walls of the antenna mast in the X-axis direction are respectively provided with clearance openings, and the clearance openings are connected to the accommodating space. The folding drive assembly is disposed in the accommodating space, and the two antenna elements are respectively connected to the drive end of the folding drive assembly; One of the antenna elements extends from a clearance opening at one end in the X-axis direction, and the other antenna element extends from a clearance opening at the other end in the X-axis direction. The folding drive assembly is used to drive the antenna elements to switch between an unfolded state and a folded state.

2. The angle-adjustable folded log-periodic antenna according to claim 1, wherein, The folding drive assembly includes a drive cylinder, a slide rod, a rack, and two transmission rods. The fixed end of the drive cylinder is located at the bottom of the accommodating space, and the slide rod is slidably mounted on the side wall of the accommodating space. The drive end of the drive cylinder is connected to the slide rod, causing the slide rod to move along the Z-axis. The rack is located on the slide rod, and both ends of the rack in the X-axis direction are provided with first transmission tooth surfaces. One end of one transmission rod meshes with the first transmission tooth surface at one end of the rack in the X-axis direction, and one end of the other transmission rod meshes with the first transmission tooth surface at the other end of the rack in the X-axis direction. The other ends of the two transmission rods are respectively connected to the antenna vibrator on the corresponding side, so that the antenna vibrator extends out from the clearance opening on the corresponding side. The two transmission rods are symmetrically arranged about the central axis of the rack.

3. The angle-adjustable folding log-periodic antenna according to claim 2, characterized in that, The transmission rod includes an integrally formed fan-shaped part, a rotating connecting part, and an antenna connecting part. The arc-shaped sidewall of the fan-shaped part is provided with a second transmission tooth surface, and the transmission rod meshes with the first transmission tooth surface through the second transmission tooth surface. The rotating connecting part is rotatably connected to the sidewall of the accommodating space, and the antenna connecting part is connected to the antenna vibrator.

4. The angle-adjustable folded log-periodic antenna according to claim 2, wherein, The folding drive assembly also includes a limiting plate, a limiting link, and a limiting connecting seat. The limiting plate is fixed to the bottom of the accommodating space and has a limiting groove along the Z-axis. The limiting connecting seat is located at the drive end of the drive cylinder. One end of the limiting link is fixed to the limiting connecting seat, and the other end of the limiting link is inserted into the limiting groove.

5. The angle-adjustable folded log-periodic antenna according to claim 1, wherein, The angle adjustment assembly includes a drive motor, a transmission belt, a transmission wheel, and a driven wheel. The driven wheel is coaxially disposed at the bottom of the antenna mast. The transmission wheel is mounted on the drive end of the drive motor, and the transmission belt is sleeved on the outer periphery of the transmission wheel and the driven wheel.

6. The angle-adjustable folded log-periodic antenna according to claim 5, wherein, The base has a cavity, the driven wheel passes through the upper surface of the base and is located in the cavity, and the drive end of the drive motor passes through the upper surface of the base and is connected to the transmission wheel.

7. The angle-adjustable folded log-periodic antenna according to claim 2, wherein The antenna element includes a connecting crossbar, a first radiating element, and a second radiating element. The first radiating unit is disposed on one end face of the connecting crossbar in the Y-axis direction, and the second radiating unit is disposed on the other end face of the connecting crossbar in the Y-axis direction; the first radiating unit and the second radiating unit are symmetrically arranged with the central axis of the connecting crossbar in the Y-axis direction as the axis of symmetry; The first radiation unit and the second radiation unit each include a plurality of metal conductors, which are spaced apart along the X-axis, and the length of the metal conductors gradually decreases from the end near the transmission rod to the end away from the transmission rod. One end of the connecting crossbar in the X-axis direction is connected to the transmission rod.

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