High-gain circularly polarized antenna for meteorological satellite communication

Abstract

The invention provides a high-gain circularly polarized antenna for meteorological satellite communication, and the antenna comprises an antenna body, a supporting frame which is connected with the antenna body and is used for adjusting the supporting angle of the antenna body; the supporting frame comprises a fixing seat which is used for being mutually fixed with a supporting object. The turntable rotates relative to the fixed seat in the horizontal direction around the center of the turntable; the sleeve is positioned in the turntable and is used for being mutually inserted with an antenna body, two opposite sides of the sleeve respectively extend towards two sides to form coaxially arranged supporting shafts, and the supporting shafts are rotationally connected with the turntable; an annular tooth is arranged on the portion, located on the periphery of the rotary disc, of the fixing base. A first elastic clamping assembly used for being meshed with the annular tooth is arranged in each supporting shaft in a sliding mode. An arc-shaped rack is arranged at the bottom of the rotating disc, and a second elastic clamping assembly used for being meshed with the arc-shaped rack is arranged at the bottom of the sleeve. According to the technical scheme, the fixing efficiency of positioning and pointing of the antenna body is simplified, and the fixing efficiency of alignment is improved.

Description

Technical Field

[0001] The present invention generally relates to the field of meteorological satellite antennas, and specifically relates to a high-gain circularly polarized antenna for meteorological satellite communication. Background Art

[0002] In the field of meteorological satellite communication, as a key device, the performance of the antenna directly affects the communication quality and the accuracy of data transmission. At present, spiral antennas or linear polarized Yagi antennas are commonly used in meteorological stations to transmit meteorological elements such as temperature, humidity, air pressure, wind speed, wind direction, rainfall, and visibility to meteorological satellites.

[0003] The core characteristic of the Yagi antenna is directivity, and its main beam needs to be aligned with the target direction. If the orientation deviation is large, the signal reception or transmission intensity will be significantly reduced. On the one hand, the staff needs to calculate the longitude and latitude of both the transmitter and the receiver through map tools or professional software, determine the azimuth angle and elevation angle, and then fix the antenna.

[0004] The conventional fixing structure is relatively complex, and the staff needs to perform limit fixing at multiple angles by screwing bolts, with low fixing efficiency and cumbersome operation. Summary of the Invention

[0005] In view of the above problems existing in the prior art, according to the present invention, a high-gain circularly polarized antenna for high-risk communication is provided, including: an antenna body, a support frame for connecting with the antenna body and adjusting the support angle of the antenna body; the support frame includes a fixed seat for fixing with a support object; a turntable rotatably connected to the fixed seat in the horizontal direction around its own center; a sleeve located in the turntable for inserting into the antenna body, and on both opposite sides of the sleeve, there are coaxially arranged support shafts extending to both sides, and the support shafts are rotatably connected to the turntable; the fixed seat is provided with an annular tooth at the periphery of the turntable, and in each support shaft, there is a first elastic clamping component slidably arranged for meshing with the annular tooth; at the bottom of the turntable, there is an arc-shaped rack, and at the bottom of the sleeve, there is a second elastic clamping component for meshing with the arc-shaped rack. By having the above technical features, the support frame has the function of angle adjustment. It can insert the antenna body into the sleeve, and then limit the horizontal rotation and vertical swing of the sleeve by triggering the first elastic clamping component and the second elastic clamping component, without complex tightening operations, greatly improving the fixing efficiency while adjusting the support alignment angle.

[0006] In some embodiments, the first elastic clamping component includes a first sliding rod disposed inside the support shaft along the length direction of the support shaft and slidably connected to the support shaft, with one end of the first sliding rod protruding from the inner wall of the sleeve; a first clamping ring coaxially fixed to the periphery of the first sliding rod; a second clamping ring coaxially sleeved on the periphery of the first sliding rod and located at the end of the first sliding rod away from the sleeve and fixedly connected to the support shaft; a first compression spring sleeved on the periphery of the first sliding rod and located between the first clamping ring and the second clamping ring; a first limiting tooth plate fixed to the end of the first sliding rod away from the sleeve, and a tooth groove engaged with the annular tooth teeth is formed on the side of the first limiting tooth plate away from the sleeve. Thus, when the antenna body is inserted into the sleeve, it drives the first sliding rod to slide outward along the support shaft, and makes the first limiting tooth plate engage with the annular tooth teeth, thereby restricting the horizontal rotation of the turntable and the fixed seat, achieving the effect of horizontal rotation limit.

[0007] In some embodiments, the second elastic clamping component includes a second sliding rod vertically penetrating the bottom of the sleeve; a pressing plate fixed to the upper end of the second sliding rod; a second compression spring sleeved on the periphery of the second sliding rod, with both ends thereof respectively abutting against one side of the pressing plate and the bottom wall of the sleeve; a second limiting tooth plate fixed to the lower end of the second sliding rod, and a tooth groove engaged with the arc-shaped rack is formed on the side of the second limiting tooth plate facing the arc-shaped rack. Thus, when the antenna body and the sleeve are inserted into each other, the lower position of the second limiting tooth plate is driven by the pressing plate, and the second limiting tooth plate engages with the arc-shaped rack, thereby restricting the vertical swing of the sleeve, and achieving the effect of limiting swing through the insertion action.

[0008] In some embodiments, there are two arc-shaped racks, which are symmetrically arranged on both sides of the sleeve with the sleeve as the center. Similarly, two groups of second elastic clamping components are symmetrically arranged in the sleeve. Thus, the arrangement of multiple arc-shaped racks provides multiple limiting structures for the second limiting tooth plate to engage with the arc-shaped rack, ensuring the limiting stability of the vertical swing of the sleeve.

[0009] In some embodiments, a through hole is vertically formed at the bottom of the sleeve between the two groups of second elastic clamping components. A screw rod is vertically fixed to the bottom of the antenna body at the through hole, and a limiting nut is threadedly connected to the screw rod. The minimum width of the limiting nut is greater than the minimum gap between the two arc-shaped racks. Thus, through the threaded connection of the screw rod and the limiting nut, the limiting nut is screwed and abutted against the back sides of the two arc-shaped racks, thereby making the insertion of the antenna body and the sleeve more stable. Moreover, the extended setting of the screw rod is also more convenient for personnel to initially adjust the position of the antenna body.

[0010] In some embodiments, a limiting block is penetrated through the screw rod. One side of the limiting block facing the sleeve is an arc surface, and the radian of the arc surface is matched with the radian of the arc-shaped rack. Thus, the addition of the limiting block increases the contact range between the limiting nut and the two arc-shaped racks. By screwing the limiting nut, the friction between the arc-shaped rack and the limiting block is also increased, thereby further restricting the swing of the sleeve.

[0011] In some embodiments, the antenna body includes a main rod, and a director, an active element, and a reflector fixed on the periphery of the main rod.

[0012] In some embodiments, the main rod includes an adjustable rod, and an extension rod fixed at one end of the adjustable rod. The director, the active element, and the reflector are all fixed on the periphery of the extension rod;

[0013] The adjustable rod is inserted into the sleeve. Thus, during the process of adjusting the position of the antenna body, the initial position can be located separately through the adjustable rod. Since the adjustable rod is short in length and light in weight, the physical effort consumed during adjustment is reduced, and the alignment accuracy is indirectly improved.

[0014] In some embodiments, the end of the first slide bar located inside the sleeve is hemispherical. Thus, during the process of inserting the antenna body into the sleeve, the main rod plays a guiding role for the first slide bar, which helps to drive the first slide bar to slide and engage, simplifying the engagement efficiency.

[0015] It should be understood that the content described in the summary of the invention is not intended to limit the key or important features of the embodiments of the present disclosure, nor is it used to limit the scope of the present disclosure. Other features of the present disclosure will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Shows a schematic diagram of the overall structure of a high-gain circularly polarized antenna for meteorological satellite communication according to an embodiment of the present invention;

[0017] Figure 2 Shows a schematic diagram of the structure of the antenna body in a high-gain circularly polarized antenna for antenna satellite communication according to an embodiment of the present invention;

[0018] Figure 3 Shows a schematic diagram of the structure of the support frame in a high-gain circularly polarized antenna for meteorological satellite communication;

[0019] Figure 4 Shows a schematic diagram of the internal structure of the support shaft in a high-gain circularly polarized antenna for meteorological satellite communication;

[0020] Figure 5A cross-sectional view of a fixed seat structure in a high-gain circularly polarized antenna for meteorological satellite communication is shown;

[0021] Figure 6 A schematic diagram of the bottom structure of the fixed seat in a high-gain circularly polarized antenna for meteorological satellite communication is shown.

[0022] Symbol description

[0023] 1. Antenna body; 11. Main rod; 111. Position-adjusting rod; 112. Extension rod; 12. Director; 13. Driven element; 14. Reflector; 2. Support frame; 21. Fixed seat; 211. Support seat; 212. Connecting part; 22. Turntable; 23. Sleeve; 24. Support shaft; 25. Annular teeth; 26. Arc-shaped rack; 3. First elastic clamping component; 31. First sliding rod; 32. First clamping ring; 33. Second clamping ring; 34. First compression spring; 35. First limiting tooth plate; 4. Second elastic clamping component; 41. Second sliding rod; 42. Pressure plate; 43. Second limiting tooth plate; 44. Second compression spring; 5. Screw; 6. Limit nut; 7. Limit block. Detailed implementation manners

[0024] Next, the preferred embodiments (or implementation manners) of the present invention will be described in detail with reference to the accompanying drawings.

[0025] Next, refer to Figures 1-6 to describe a high-gain circularly polarized antenna for meteorological communication of the present invention.

[0026] Figure 1 A schematic diagram of the overall structure of a high-gain circularly polarized antenna for meteorological satellite communication according to an embodiment of the present invention is shown. Refer to Figure 1 As shown, a high-gain circularly polarized antenna for meteorological satellite communication provided in this embodiment includes an antenna body 1 and a support frame 2 that is inserted into the antenna body 1. The support frame 2 can be fixed to a solid carrier or a mobile carrier by bolts, and then the antenna body 1 is supported by assembling the antenna body 1 and the support frame 2 with each other.

[0027] Figure 2 A schematic diagram of the structure of the antenna body 1 in a high-gain circularly polarized antenna for antenna satellite communication according to an embodiment of the present invention is shown. Refer to Figure 2As shown, the antenna body 1 includes a main rod 11, a director 12, a driven element 13, and a reflector 14 disposed on the main rod 11. The main rod 11 mainly includes an adjustment rod 111 at the bottom and an extension rod 112 at one end of the adjustment rod 111. The adjustment rod 111 and the extension rod 112 can be a plug-in structure, which is convenient for installation and can also facilitate the mutual connection of electrical signals. The director 12 is provided with multiple groups, which are arranged at intervals along the length direction of the extension rod 112. Each group has at least two and is evenly distributed around the circumference of the extension rod 112. In this embodiment, the director 12 is taken as an example of 3 groups, and each group is provided with 4. The director 12 can directionally enhance electromagnetic wave radiation and achieve the antenna characteristics of high gain and narrow beam through electromagnetic coupling and phase adjustment.

[0028] The driven element 13 is disposed at the bottom of the director 12. In this embodiment, one group of driven elements 13 is provided, and each group includes four, which are fixed on the circumference of the extension rod 112 and are arranged at intervals around the circumference of the extension rod 112. The driven element 13, as the core radiation unit, is directly connected to the feeder and is responsible for converting electrical signals into electromagnetic waves or receiving electromagnetic waves and converting them into electrical signals. Moreover, the driven element 13 works in cooperation with the passive reflector and director to form a radiation pattern with stronger directivity.

[0029] The reflector 14 has the same number as the driven element 13, is located below each driven element 13, and is obliquely fixed to the extension rod 112. The reflector 14 weakens the backward radiation by reflecting electromagnetic waves and enhances the intensity of the front and back radiation at the same time. Its length is usually 5%-10% longer than that of the driven element 13. Using its inductive characteristics, the phase of the electromagnetic wave is lagged, and a directional beam is formed after being superimposed with the radiation signal of the driven element 13.

[0030] Figure 3 The structural schematic diagram of the support frame 2 in a high-gain circularly polarized antenna for meteorological satellite communication is shown. Refer to Figure 3As shown in the figure, the support frame 2 includes a fixed seat 21. The fixed seat 21 includes a horizontal support seat 211 and a connecting portion 212 connected to one side of the support seat 211. A plurality of mounting holes are provided on the connecting portion 212 to facilitate the connection with a mobile carrier or a fixed carrier. A circular hole is provided on the support seat 211, and a turntable 22 is embedded in the circular hole to support the turntable 22 and rotate coaxially with the support seat 211 around the center of the turntable 22. A sleeve 23 is provided at the center of the turntable 22. The upper end of the sleeve 23 is open and the lower end is sealed. A support shaft 24 is horizontally provided on each of the opposite sides thereof. The support rod is perpendicular to the fixed plane of the sleeve 23, and the two support shafts 24 are coaxially arranged. The ends of the two support shafts 24 are rotatably connected to the upper surface of the turntable 22, so that the sleeve 23 is rotatably connected to the turntable 22 with the support shaft 24 as the axis. If the antenna body 1 is inserted into the inside of the sleeve 23, the pitching angle of the antenna body 1 can be adjusted by the rotation of the sleeve 23 and the turntable 22; the horizontal rotation angle of the antenna body 1 can be adjusted by the horizontal rotation of the turntable 22 and the fixed seat 21.

[0031] In some embodiments, a bearing is further provided on the platform where the support seat 211 is connected to the turntable 22 to avoid direct contact between the support seat 211 and the turntable 22, ensure the smooth horizontal rotation of the turntable 22, and make the horizontal rotation of the antenna body 1 more labor-saving.

[0032] A ring-shaped tooth 25 is vertically provided on the outer periphery of the support seat 211 where the support seat 211 is located. The tooth is located on the inner peripheral side of the ring-shaped tooth 25, and the ring-shaped tooth 25 is coaxially arranged with the turntable 22. A first elastic clamping component 3 for meshing with the ring-shaped tooth 25 and restricting the rotation position of the turntable 22 is provided inside the support shaft 24. Figure 4 The figure shows a schematic diagram of the internal structure of the support shaft 24 in a high-gain circularly polarized antenna for meteorological satellite communication. Refer to Figure 4 As shown in the figure, the first elastic clamping component 3 includes a first sliding rod 31 which is horizontally arranged inside the support shaft 24 and slidably connected to the support shaft 24 along the axial direction of the support shaft 24. A first clamping ring 32 is sleeved on the periphery of the first sliding rod 31. The first clamping ring 32 is located in the middle of the support shaft 24, and its inner peripheral side is fixed to the outer wall of the first sliding rod 31. A second clamping ring 33 is sleeved on the periphery of the first sliding rod 31. The second clamping ring 33 is located at the end of the support shaft 24, and the outer peripheral side of the second clamping ring 33 is fixed to the inner wall of the support shaft 24. A first compression spring 34 is also sleeved on the first sliding rod 31. The first compression spring 34 is located between the first clamping ring 32 and the second clamping ring 33, and its two ends abut against one side of the first clamping ring 32 and the second clamping ring 33. Moreover, a first limiting tooth plate 35 is fixed to the end of the first sliding rod 31. A tooth groove for cooperating with the ring-shaped tooth 25 is provided on the side of the first limiting tooth plate 35 facing away from the first sliding rod 31.

[0033] When the first sliding rod 31 is in its natural state, the end thereof facing the sleeve 23 protrudes from the inner wall of the sleeve 23. When an object is placed in the sleeve 23, the object will push the first sliding rod 31 to slide inside the support shaft 24, and cause the first limit tooth plate 35 to move towards the annular tooth 25. Eventually, the first limit tooth plate 35 meshes with the annular tooth 25, thereby restricting the rotation of the sleeve 23 in the horizontal direction.

[0034] In some embodiments, the end of the first sliding rod 31 located at the sleeve 23 is provided as a hemispherical shape, and the distance that the first sliding rod 31 protrudes from the inner wall of the sleeve 23 is less than the radius of the hemispherical shape at the end of the first sliding rod 31. When an object is inserted into the sleeve 23, it plays a role of squeezing and guiding the first sliding rod 31, thereby helping to drive the first sliding rod 31 to displace in a direction away from the sleeve 23.

[0035] In some embodiments, the cross-section of the first sliding rod 31 can be polygonal, so that the rotation of its own structure is restricted when the first sliding rod 31 slides, to ensure the stability of the meshing between the first limit tooth plate 35 and the annular tooth 25. The cross-section of the first sliding rod 31 can also be circular, but the edge of the first limit tooth plate 35 needs to abut against the upper surface of the turntable 22. Thus, during the sliding process of the first sliding rod 31, the rotation of the first sliding rod 31 is restricted, and the stability of the meshing between the first limit tooth plate 35 and the annular tooth 25 is also ensured.

[0036] Figure 5 The sectional view of the structure of the fixed seat 21 in a high-gain circularly polarized antenna for meteorological satellite communication is shown. Refer to Figure 5 As shown, an arc-shaped rack 26 is provided at the bottom of the turntable 22. The two ends of the arc-shaped rack 26 are fixed to the bottom of the turntable 22, and the teeth of the arc-shaped rack 26 are located on the inner arc side of the arc-shaped rack 26. And a second elastic clamping component 4 for meshing with the arc-shaped rack 26 is arranged inside the sleeve 23. The second elastic clamping component 4 includes a second sliding rod 41 vertically penetrating the bottom wall of the sleeve 23. A pressing plate 42 is horizontally and fixedly connected to the upper end of the second sliding rod 41, and a second limit tooth plate 43 is fixedly connected to the lower end of the second sliding rod 41. A tooth groove for meshing with the teeth on the arc-shaped rack 26 is provided on the lower surface of the second limit tooth plate 43. And a second compression spring 44 is also sleeved on the second sliding rod 41. The second compression spring 44 is located between the pressing plate 42 and the bottom wall of the sleeve 23.

[0037] When an object is inserted into the sleeve 23, as the object is inserted to the bottom of the sleeve 23, it presses the pressing plate 42, drives the second limit tooth plate 43 to move downward, and makes the second limit tooth plate 43 mesh with the arc-shaped rack 26, thereby restricting the swing of the sleeve 23 in the vertical direction.

[0038] In this embodiment, the sleeve 23 is used for inserting the main rod 11. Since the main rod 11 is relatively long, it is not easy to accurately adjust the orientation of the main rod 11 when inserting the main rod 11 into the interior of the sleeve 23. Therefore, the positioning rod 111 can be first inserted into the interior of the sleeve 23. Due to its limited length and light weight, the precise control of the positioning of the positioning rod 111 is improved. The staff can adjust it by horizontally rotating and vertically swinging at the same time, and then insert the positioning rod 111 to the bottom of the sleeve 23 to achieve double limit in the horizontal and vertical directions of the sleeve 23; it is also possible to first make adjustments in the horizontal direction. After determining the rotation in the horizontal direction, insert the positioning rod 111 to drive the displacement of the first slide rod 31, thereby restricting the relative rotation between the turntable 22 and the support seat 211. Then, make adjustments to the swinging angle in the vertical direction. After determining the angle, insert the positioning rod 111 into the bottom of the sleeve 23. Through the engagement of the second limiting tooth plate 43 and the arc-shaped rack 26, the swinging angle of the sleeve 23 in the vertical direction is restricted, and finally the determination of the antenna angle is achieved. Finally, the extension rod and the positioning rod 111 are inserted into each other to complete the final assembly of the antenna.

[0039] In some embodiments, two arc-shaped racks 26 are provided and symmetrically arranged on both sides of the sleeve 23 with the sleeve 23 as the center. Similarly, two groups of second elastic clamping components 4 are provided and correspond to the positions of the arc-shaped racks 26. When the positioning rod 111 is inserted into the bottom of the sleeve 23, multiple pressing plates 42 support the positioning rod 111, improving the stability of the support of the positioning rod 111. Moreover, the mutual engagement of multiple groups of second limiting tooth plates 43 and the arc-shaped racks 26 ensures the stability of the limit on the swinging of the sleeve 23 in the vertical direction.

[0040] Figure 6 The schematic diagram of the bottom structure of the fixed seat 21 in a high-gain circularly polarized antenna for meteorological satellite communication is shown. Refer to Figure 6 As shown, a screw rod 5 is vertically fixed at the bottom of the positioning rod 111, and a through hole for the screw rod 5 to pass through is provided in the corresponding area of the bottom wall of the sleeve 23. And a limiting nut 6 is threadedly connected to the screw rod 5. The minimum width of the limiting nut 6 is greater than the gap width between the two arc-shaped racks 26. Thus, when the limiting nut 6 is screwed on the screw rod 5, it can abut against the outer arc surface of the arc-shaped rack 26, thereby increasing the friction between the limiting nut 6 and the arc-shaped rack 26 and further ensuring the stability of the engagement between the second limiting tooth plate 43 and the arc-shaped rack 26.

[0041] In some embodiments, a limiting block 7 is sleeved on the screw rod 5. The length and width of the limiting block 7 are both greater than the gap width between the two arc-shaped racks 26. And the upper surface of the limiting block 7 is matched with the outer arc surface radian of the arc-shaped rack 26. And the limiting block 7 is located above the limiting nut 6, thereby further increasing the friction between the limiting block 7 and the arc-shaped rack 26 and ensuring the stability of the insertion of the antenna body 1 and the sleeve 23.

[0042] In the description of this specification, terms such as "connection", "installation", "fixation", etc. shall be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0043] The above are only the preferred embodiments of this application and are not used to limit this application. For those skilled in the art, various changes and modifications can be made to this application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this application shall be included within the protection scope of this application.

Claims

1. A high-gain circularly polarized antenna for meteorological satellite communications, characterized in that: include: Antenna body (1), A support frame (2) is used to be connected to the antenna body (1) and to adjust the support angle of the antenna body (1); the support frame (2) comprises A fixing seat (21) for fixing to a supporting object; The turntable (22) rotates horizontally with the fixed seat (21) around its own center; The sleeve (23) is located in the rotating disk (22) and is used for plugging with the antenna body (1). Two opposite sides of the sleeve (23) extend coaxially to each other, and the support shaft (24) is rotatably connected to the rotating disk (22); The fixing seat (21) is provided with an annular tooth (25) on the periphery of the rotating disk (22), and each of the supporting shafts (24) is slidably provided with a first elastic positioning component (3) for meshing with the annular tooth (25); An arc-shaped rack (26) is disposed at the bottom of the rotating disk (22), and a second elastic locking component (4) for meshing with the arc-shaped rack (26) is disposed at the bottom of the sleeve (23).

2. A high-gain circularly polarized antenna for meteorological satellite communications according to claim 1, characterized in that: The first elastic locking component (3) comprises A first sliding rod (31) is arranged inside the support shaft (24) along the length direction of the support shaft (24) and is slidably connected to the support shaft (24), and one end of the first sliding rod (31) protrudes from the inner wall of the sleeve (23); A first retaining ring sheet (32) is coaxially fixed to the circumferential side of the first sliding rod (31); A second retaining ring (33) is coaxially sleeved on the circumferential side of the first sliding rod (31), is located at the end of the first sliding rod (31) away from the sleeve (23), and is fixed to the support shaft (24); A first compression spring (34) is sleeved on the circumference of the first sliding rod (31) and is located between the first locking ring piece (32) and the second locking ring piece (33); The first limiting tooth plate (35) is fixed to the end of the first sliding rod (31) away from the sleeve (23), and a tooth groove that meshes with the annular teeth (25) is formed on the side away from the sleeve (23).

3. The high-gain circularly polarized antenna for meteorological satellite communication according to claim 1, characterized in that: The second elastic locking component (4) comprises A second sliding rod (41) vertically penetrates the bottom of the sleeve (23); A pressing plate (42) fixed to the upper end of the second sliding rod (41); A second compression spring (44) is sleeved on the circumference of the second slide bar (41), and its two ends are respectively in contact with one side of the pressure plate (42) and the inner bottom wall of the sleeve (23); The second position-limiting tooth plate (43) is fixed to the lower end of the second sliding rod (41), and a tooth groove that meshes with the arc-shaped rack (26) is formed on one side of the second position-limiting tooth plate (43) facing the arc-shaped rack (26).

4. The high-gain circularly polarized antenna for meteorological satellite communication according to claim 3, characterized in that: The arc-shaped racks (26) are provided with two and are symmetrically arranged on both sides of the sleeve (23) with the sleeve (23) as the center. Similarly, the second elastic positioning components (4) are symmetrically arranged in two groups in the sleeve (23).

5. A high-gain circularly polarized antenna for meteorological satellite communication according to claim 4, characterized in that: A through hole is vertically formed at the bottom of the sleeve (23) between the two sets of second elastic locking components (4); a screw rod (5) is vertically fixedly connected to the bottom of the antenna body (1) at the through hole; a limiting nut (6) is threadedly connected to the screw rod (5); and the minimum width of the limiting nut (6) is greater than the gap between the two arc-shaped racks (26).

6. The high-gain circularly polarized antenna for meteorological satellite communication according to claim 5, characterized in that: A limit block (7) is provided on the screw rod (5), and a side of the limit block (7) facing the sleeve (23) is arranged as an arc surface, and the curvature of the arc surface matches the curvature of the arc-shaped rack (26).

7. The high-gain circularly polarized antenna for meteorological satellite communication according to claim 1, characterized in that: The antenna body (1) comprises a main rod (11), and a guiding vibrator (12), an active vibrator (13), and a reflecting vibrator (14) fixed on the circumference of the main rod (11).

8. The high-gain circularly polarized antenna for meteorological satellite communication according to claim 7, characterized in that: The main rod (11) comprises a positioning rod (111) and an extension rod (112) fixed to one end of the positioning rod (111); the guiding vibrator (12), the active vibrator (13) and the reflecting vibrator (14) are all fixed on the circumference of the extension rod (112); and the positioning rod (111) is inserted into the sleeve (23).

9. The high-gain circularly polarized antenna for meteorological satellite communication according to claim 2, characterized in that: The end of the first sliding rod (31) located inside the sleeve (23) is configured to be hemispherical.

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