A shipboard antenna

Abstract

This utility model discloses a shipborne antenna, belonging to the field of antenna technology. It includes an radome, a feed system, and a three-axis turntable. The radome includes a lower cover connected to an upper cover by multiple bolts. The three-axis turntable is mounted inside the lower cover and includes a support assembly. The support assembly overlaps with the inner wall of the lower cover, and an azimuth rotation platform is rotatably connected to the support assembly. This utility model achieves wave transmission performance and protects the internal components of the shipborne antenna through a sealed radome. Its azimuth, elevation, roll, and polarization are all driven by gears, featuring high reliability and high transmission accuracy. The antenna can achieve large-angle, high-speed rotation of azimuth, elevation, roll, and polarization to counteract the simultaneous rolling and displacement of the ship in the heading, lateral, and longitudinal directions (below sea state 5), maintaining a fixed polarization angle and meeting the uninterrupted interactive transmission function between the antenna and the satellite.

Description

Technical Field

[0001] This utility model belongs to the field of antenna technology, specifically relating to a shipborne antenna. Background Technology

[0002] Shipborne antennas are mainly equipped on surface ships and utilize satellite communication networks, anti-interference communication networks, and various civilian and commercial communication satellites to provide broadband and anti-interference satellite communication means between ships and shore-based, naval vessels, aircraft, and large commercial ships, enabling uninterrupted beyond-line-of-sight interactive transmission of voice, video, and data.

[0003] However, existing shipborne antennas may not be able to maintain a fixed polarization angle during operation due to the ship's rolling and displacement in the heading, lateral and longitudinal directions (below sea state 5), and thus cannot meet the uninterrupted interactive transmission function between the antenna and the satellite. Therefore, a shipborne antenna is needed to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a shipborne antenna to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a shipborne antenna, including an radome, an antenna feed system, and a three-axis turntable. The radome includes a lower cover, which is connected to an upper cover by multiple bolts. The three-axis turntable overlaps inside the lower cover and includes a support assembly. The support assembly overlaps with the inner wall of the lower cover. An azimuth rotation platform is rotatably connected to the support assembly. The azimuth rotation platform includes a platform body, and an azimuth gear is disposed at the bottom of the platform body. An azimuth drive motor is correspondingly disposed on the support assembly. An azimuth drive gear is mounted on the output shaft of the azimuth drive motor, and the azimuth drive gear meshes with the azimuth gear. When the azimuth drive motor is working, it drives the azimuth gear to rotate through the azimuth drive gear, thereby realizing the rotation of the azimuth rotation platform to counteract the displacement of the ship in the course direction.

[0006] The support assembly is connected to a power supply, three sets of motor drivers, and a control box. A rolling assembly is installed within the azimuth rotation platform. The rolling assembly includes a rolling frame with a rolling gear on it. A rolling drive motor is mounted within the azimuth rotation platform, and the output shaft of the rolling drive motor is connected to a rolling drive gear, which meshes with the rolling gear. When the rolling drive motor operates, it drives the rolling gear to rotate via the rolling drive gear, thus achieving the rolling rotation of the rolling assembly to counteract the ship's lateral displacement.

[0007] The roll assembly is connected to the pitch assembly. The pitch assembly includes a pitch bracket with a pitch gear. A pitch drive motor is mounted on the roll assembly, and the output shaft of the pitch drive motor is connected to a pitch drive gear, which meshes with the pitch gear. When the pitch drive motor starts, it drives the pitch gear to rotate via the pitch drive gear, thus achieving the pitch rotation of the pitch assembly and counteracting the ship's roll in the longitudinal direction.

[0008] The pitch assembly is connected to the feedback mounting plate, which is connected to the antenna feed system. The antenna feed system includes a Ku power amplifier, a large polarization gear, a polarization motor mount, a polarization motor, a pitch counterweight and bracket, a Ku polarization zero-position switch, a Ka polarization switching switch, a Ka power amplifier, Ka, an LNB, an antenna surface, a dual-band network, Ku, an LNB, a feed support cylinder, a feed, a secondary surface support, and a secondary surface.

[0009] By adopting the above structure, the antenna employs a four-axis architecture of azimuth, roll, elevation, and polarization rotation. Its structure mainly includes a radome, a shipborne three-axis turntable, and a Ku / Ka dual-band antenna feed system. It can achieve an azimuth range of °, elevation range of -° to °, roll range of ±°, and Ku linear polarization range of ±°. The rotation of the four axes (azimuth, elevation, roll, and polarization) offsets the ship's displacement in the heading, longitudinal, and lateral directions, ensuring that the antenna feed communication system is always aligned with the target satellite and maintains a fixed polarization angle, achieving uninterrupted interactive transmission.

[0010] In a preferred embodiment, the back of the lower cover is provided with a transmitter N-type socket, a receiver N-type socket, a power connector, an antenna control connector, and a tuning connector.

[0011] In a preferred embodiment, the support assembly includes a base, which is rotatably connected to an orientation rotation platform, and four shock absorbers are connected to the base, all of which overlap inside the lower cover.

[0012] In a preferred embodiment, the Ku power amplifier, polarization motor mount, pitch counterweight and bracket, Ku polarization zero-position switch, Ka polarization switching switch, Ka power amplifier, Ka-LNB and antenna surface are all mounted on the antenna feed mounting plate.

[0013] In a preferred embodiment, the polarization motor is mounted on a polarization motor mount, and the output shaft of the polarization motor meshes with a polarization pinion and a polarization gear. The polarization gear is fixed to the inner ring of the polarization bearing in the feedback mounting plate and is installed concentrically thereto. The outer ring of the polarization bearing in the feedback mounting plate is installed concentrically with the antenna surface.

[0014] In one preferred embodiment, one side of the antenna mounting plate is connected to the Ku power amplifier, polarization motor mount, pitch counterweight and bracket, Ka polarization switching switch, Ka power amplifier and Ka, LNB, and the inner ring of the polarization bearing in the feedback mounting plate is connected to the dual-frequency network, Ku, LNB, feed support cylinder, feed, secondary support and secondary surface.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This invention, by incorporating an radome, an azimuth rotation platform, a roll assembly, and a pitch assembly, enables the shipborne antenna to achieve wave transmission performance and protect the internal components of the radome through a sealed radome. Its azimuth, pitch, roll, and polarization are all driven by gears, featuring high reliability and high transmission accuracy. The antenna can achieve large-angle, high-speed rotation of azimuth, pitch, roll, and polarization to counteract the swaying and displacement of the ship in the heading, lateral, and longitudinal directions (below sea state level), maintain a fixed polarization angle, and meet the uninterrupted interactive transmission function between the antenna and the satellite. Attached Figure Description

[0017] Figure 1 This is a front sectional view of the present invention;

[0018] Figure 2 This is a rear view structural schematic diagram of the antenna radome of this utility model;

[0019] Figure 3 This is a three-dimensional structural diagram of the orientation rotation platform of this utility model;

[0020] Figure 4 This is a three-dimensional side view of the antenna surface of this utility model;

[0021] Figure 5 This is a side-view three-dimensional structural schematic diagram of the feedback mounting plate of this utility model.

[0022] In the diagram: 1. Radome; 11. Lower radome; 12. Upper radome; 13. Transmitter N-type mount; 14. Receiver N-type mount; 15. Power connector; 16. Antenna control connector; 17. Adjustment connector; 2. Antenna feeder system; 21. Ku power amplifier; 22. Polarization gear; 23. Polarization motor mount; 24. Polarization motor; 25. Pitch counterweight and bracket; 26. Ku polarization zero-position switch; 27. Ka polarization switching switch; 28. Ka power amplifier; 29. 210. KA, LNB; 211. Antenna surface; 212. Dual-band network; 213. KU, LNB; 214. Feed support cylinder; 215. Feed; 216. Sub-surface support; 217. Sub-surface; 3. Three-axis turntable; 31. Support assembly; 311. Base; 312. Shock absorber; 32. Azimuth rotation platform; 33. Power supply; 34. Motor driver; 35. Control box; 36. Roll assembly; 37. Pitch assembly; 38. Feedback mounting plate. Detailed Implementation

[0023] The present invention will be further described below with reference to the embodiments.

[0024] The following embodiments are used to illustrate the present invention, but should not be used to limit the scope of protection of the present invention. The conditions in the embodiments can be further adjusted according to specific conditions, and simple improvements to the method of the present invention under the premise of the concept of the present invention are all within the scope of protection claimed by the present invention.

[0025] Please see Figure 1-5 This utility model provides a shipborne antenna, including an radome 1, an antenna feed system 2, and a three-axis turntable 3. The back of the lower radome 11 is provided with a transmitting N-type mount 13, a receiving N-type mount 14, a power socket 15, an antenna control socket 16, and a tuning socket 17. The receiving N-type mount 14 is used for receiving low-frequency signals. The power socket 15 is used to supply power to the internal components of the antenna. The antenna control socket 16 is used to control the movement of the antenna. The tuning socket is used for antenna tuning. The transmitting N-type mount 13 is used for transmitting low-frequency signals.

[0026] The radome 1 includes a lower cover 11, which is connected to the upper cover 12 by multiple bolts. The radome 1 is installed on the hull. The radome 1 consists of two parts: the upper cover 12 and the lower cover. It has good wave transmission performance and corrosion resistance. The radome 1 is a sealed design, which isolates the inner environment of the radome 1 and can protect the internal components of the radome 1, ensuring that the antenna works normally in harsh environments.

[0027] The three-axis turntable 3 is attached to the lower cover 11. The three-axis turntable 3 includes a support assembly 31, which is attached to the inner wall of the lower cover 11. The support assembly 31 includes a base 311, which is rotatably connected to the azimuth rotation table 32. Four shock absorbers 312 are connected to the lower base 311. All four shock absorbers 312 are attached to the lower cover 11. By setting the shock absorbers 312, the shock absorbers 312 reduce the damage caused by the ship's vibration to the three-axis turntable 3.

[0028] An azimuth rotation platform 32 is rotatably connected to the support assembly 31. A power supply 33, three sets of motor drivers 34, and a control box 35 are connected to the support assembly 31. A roll assembly 36 is installed inside the azimuth rotation platform 32. The roll assembly 36 is connected to the pitch assembly 37, which is connected to the feedback mounting plate 38. The feedback mounting plate 38 is connected to the antenna feed system 2. The antenna feed system 2 includes a Ku power amplifier 21, a large polarization gear 22, a polarization motor mount 23, a polarization motor 24, a pitch counterweight and bracket 25, a Ku polarization zero-position switch 26, a Ka polarization switching switch 27, a Ka power amplifier 28, Ka and LNB 29, an antenna surface 210, a dual-band network 211, Ku and LNB 212, a feed support cylinder 213, a feed 214, a secondary surface support 215, and a secondary surface 216. The Ku power amplifier 21, polarization motor mount 23, pitch counterweight and bracket 25, and Ku polarization... The zero-position switch 26, ka polarization switching switch 27, ka power amplifier 28, ka-LNB, and antenna surface 210 are all mounted on the antenna feeder mounting plate. The polarization motor 24 is mounted on the polarization motor mount 23. The output shaft of the polarization motor 24 meshes with the polarization gear 22 through the polarization pinion. The polarization gear 22 is fixed on the inner ring of the polarization bearing in the feedback mounting plate 38 and is installed concentrically with it. The outer ring of the polarization bearing in the feedback mounting plate 38 is installed concentrically with the antenna surface 210. One side of the antenna feeder mounting plate is connected to the ku power amplifier 21, polarization motor mount 23, pitch counterweight and bracket 25, ka polarization switching switch 27, ka power amplifier 28, and ka and LNB 29. The inner ring of the polarization bearing in the feedback mounting plate 38 is connected to the dual-band network 211, ku and LNB 212, feed support cylinder 213, feed 214, sub-surface support 215, and sub-surface 216.

[0029] The working principle and usage process of this utility model are as follows: When the antenna needs to be assembled, the lower cover 11 is installed on the ship, the three-axis turntable 3 is placed inside the lower cover 11, and then the upper cover 12 is placed over the three-axis turntable 3 and connected to the lower cover 11 by multiple bolts.

[0030] When the antenna is in use, the power supply 33 supplies power to the three-axis turntable 3, and the control box 35 drives the azimuth rotating platform 32, the pitch assembly 37 and the roll assembly 36 respectively through three motor drivers 34.

[0031] When the antenna is in use, the power supply 33 supplies power to the azimuth drive motor, and the control box 35 controls the azimuth drive motor to work through the motor driver 34. The azimuth drive motor drives the azimuth drive gear to rotate, and the azimuth drive gear meshes with the azimuth gear at the bottom of the azimuth rotation table 32, thereby driving the azimuth rotation table 32 to rotate in azimuth, achieving 360° infinite rotation to counteract the displacement of the ship in the heading direction.

[0032] Meanwhile, the control box 35 controls the pitch drive motor to work through the motor driver 34. The pitch drive motor drives the pitch drive gear to rotate. The pitch drive gear meshes with the pitch gear on the pitch assembly 37, causing the pitch assembly 37 to pitch and rotate. The rotation angle range is -15° to +120° (0° when the beam direction is horizontal), thereby counteracting the ship's rolling in the longitudinal direction.

[0033] The control box 35 also controls the roll drive motor to work through the motor driver 34. The roll drive motor drives the roll drive gear to rotate. The roll drive gear meshes with the roll gear on the roll assembly 36, causing the roll assembly 36 to roll. The rotation angle range is ±30°, thereby counteracting the displacement of the ship in the lateral direction.

[0034] This allows the three-axis turntable 3 to drive the antenna feed system 2 to rotate in azimuth: 360° infinitely, pitch: -15° to +120° (0° when the beam direction is horizontal), and roll: ±30°. Simultaneously, it controls the polarization motor 24 to work. The working polarization motor 24 drives the polarization gear 22 to rotate through the polarization pinion. The rotating polarization gear 22 rotates through the feed support cylinder 213, feed 214, secondary support 215, secondary surface 216, dual-frequency network 211, and ku-LNB.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A shipborne antenna comprising a radome (1), a feed system (2) and a three-axis turntable (3), characterized in that: The radome (1) includes a lower radome (11), which is connected to the upper radome (12) by multiple bolts. The three-axis turntable (3) is mounted inside the lower radome (11). The three-axis turntable (3) includes a support assembly (31), which is mounted on the inner wall of the lower radome (11). An azimuth rotating platform (32) is rotatably connected to the support assembly (31). A power supply (33), three sets of motor drivers (34), and a control box (35) are connected to the support assembly (31). A roll assembly (36) is provided inside the azimuth rotating platform (32), and the roll assembly (36) is connected to the pitch assembly (37). The pitch assembly (37) is connected to the feedback mounting plate (38), which is connected to the antenna feed system (2). The antenna feed system (2) includes a Ku power amplifier (21), a large polarization gear (22), a polarization motor mount (23), a polarization motor (24), a pitch counterweight and bracket (25), a Ku polarization zero-position switch (26), a Ka polarization switching switch (27), a Ka power amplifier (28), Ka, LNB (29), an antenna surface (210), a dual-band network (211), a Ku, LNB (212), a feed support cylinder (213), a feed (214), a sub-surface support (215), and a sub-surface (216).

2. A shipboard antenna according to claim 1, characterized in that: The back of the lower cover (11) is provided with a transmitter N-type mount (13), a receiver N-type mount (14), a power connector (15), an antenna control connector (16), and a tuning connector (17).

3. A shipboard antenna according to claim 1, characterized in that: The support assembly (31) includes a base (311) which is rotatably connected to an orientation rotating platform (32). Four shock absorbers (312) are connected to the base (311) and are all attached to the lower cover (11).

4. A shipboard antenna according to claim 1, characterized in that: The Ku power amplifier (21), polarization motor mount (23), pitch counterweight and bracket (25), Ku polarization zero-position switch (26), Ka polarization switching switch (27), Ka power amplifier (28), Ka-LNB and antenna surface (210) are all mounted on the antenna feed mounting plate.

5. A shipboard antenna according to claim 1, characterized in that: The polarization motor (24) is mounted on the polarization motor base (23). The output shaft of the polarization motor (24) meshes with the polarization gear (22) through the polarization pinion. The polarization gear (22) is fixed on the inner ring of the polarization bearing in the feedback mounting plate (38) and is installed concentrically with it. The outer ring of the polarization bearing in the feedback mounting plate (38) is installed concentrically with the antenna surface (210).

6. A shipborne antenna according to claim 4, characterized in that: One side of the antenna mounting plate is connected to the Ku power amplifier (21), the polarization motor mount (23), the pitch counterweight and bracket (25), the Ka polarization switching switch (27), the Ka power amplifier (28), and the Ka and LNB (29). The inner ring of the polarization bearing in the feedback mounting plate (38) is connected to the dual-frequency network (211), Ku, LNB (212), the feed support cylinder (213), the feed (214), the secondary support (215), and the secondary surface (216).

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