An S-band monopulse self-tracking feed

Abstract

This application discloses an S-band monopulse self-tracking feed, belonging to the technical field of antennas. It includes a mounting model, an antenna element, a sum and difference device, a circular polarizer, a low-noise amplifier, a cavity filter, a power divider, a tracking modulation module, and a housing. The mounting model includes an inner mounting plate, a mounting cover plate, and an outer mounting plate. The mounting cover plate fixes two first support frames on opposite sides of the low-noise amplifier, and a mounting top plate is fixed between the two first support frames. The power divider is fixed on the mounting top plate. The mounting cover plate fixes two second support frames on opposite sides of the cavity filter, and the tracking modulation module is fixed on the second support frames. The outer mounting plate is fixed to the outside of the inner mounting plate. By mounting the power divider above the low-noise amplifier using the first support frames and the mounting top plate, and by mounting the tracking modulation module above the cavity filter using the second support frames, the space occupancy of the feed is reduced, resulting in a smaller feed size.

Description

Technical Field

[0001] This application relates to the field of antenna technology, and in particular to an S-band monopulse self-tracking feed. Background Technology

[0002] An S-band feed is a device specifically designed for transmitting or receiving S-band electromagnetic waves. The S-band is a portion of the microwave spectrum, typically between 2 and 4 GHz.

[0003] In related technologies, an S-band feed typically includes a mounting plate, an antenna element, a sum / differential converter, a circular polarizer, a low-noise amplifier, a cavity filter, a power divider, a tracking modulation module, and a housing. The antenna element, sum / differential converter, circular polarizer, low-noise amplifier, cavity filter, power divider, and tracking modulation module are uniformly fixed to the mounting plate circumferentially. The housing encloses the antenna element, sum / differential converter, circular polarizer, low-noise amplifier, cavity filter, power divider, and tracking modulation module internally. Signal output terminals are mounted on the housing. The signal received by the antenna element enters the sum / differential converter through the circular polarizer. The signal received by the sum / differential converter enters the cavity filter through the tracking modulation module. The signal filtered by the cavity filter enters the low-noise amplifier for amplification. The signal amplified by the low-noise amplifier is divided into different signals by the power divider and output from different signal output terminals.

[0004] Regarding the aforementioned technologies, the inventors discovered that unreasonable feeder layout leads to excessively large feeder sizes, making feeder installation inconvenient. Utility Model Content

[0005] In order to reduce the size of the feed source, this application provides an S-band monopulse self-tracking feed source.

[0006] The above-mentioned technical objective of this application is achieved through the following technical solution:

[0007] An S-band monopulse self-tracking feed includes a mounting model, an antenna element, a sum / differential converter, a circular polarizer, a low-noise amplifier, a cavity filter, a power divider, a tracking modulation module, and a housing. The mounting model includes an inner mounting plate, a mounting cover plate, and an outer mounting plate. The antenna element is mounted on one side of the inner mounting plate, and the sum / differential converter and circular polarizer are mounted on the other side of the inner mounting plate. The mounting cover plate is fixed to one side of the sum / differential converter. The low-noise amplifier and cavity filter are mounted on the side of the mounting cover plate opposite to the inner mounting plate. The mounting cover plate has two first support frames fixed on opposite sides of the low-noise amplifier, and a mounting top plate is fixed between the two first support frames. The power divider is fixed to the mounting top plate. The mounting cover plate has two second support frames fixed on opposite sides of the cavity filter. The tracking modulation module is fixed to the second support frames. The outer mounting plate is fixed to the outside of the inner mounting plate, and the housing is fixed to the outside of the outer mounting plate.

[0008] By adopting the above scheme, the power divider is installed above the low-noise amplifier through the first support frame and the mounting top plate, and the tracking modulation module is installed above the cavity filter through the second support frame, which reduces the space occupation of the feed source and makes the feed source smaller.

[0009] Optionally, the housing includes a front cover, a rear cover, and a rear cover. The front cover houses the antenna vibrator inside, and a first mounting platform is fixed at the inner edge of the front cover. The outer mounting plate is fixed to the first mounting platform with bolts. The rear cover houses the low-noise amplifier, cavity filter, power divider, and tracking modulation module inside, and a second mounting platform is fixed at the inner edge of the rear cover. The outer mounting plate is fixed to the second mounting platform with bolts. A third mounting platform is also fixed at the inner edge of the rear cover, and the rear cover is fixed to the third mounting platform with bolts.

[0010] By adopting the above solution, the housing can enclose the antenna vibrator, low-noise amplifier, cavity filter, power divider, and tracking modulation module, thereby protecting them and reducing damage from the external environment.

[0011] Optionally, the housing also includes an aviation insert plate. The rear housing has a notch, and a fourth mounting platform is fixed on both sides of the notch. The aviation insert plate is fixed to the fourth mounting platform by bolts, and a signal output interface is fixedly installed on the aviation insert plate.

[0012] By adopting the above solution, the installation of the signal output interface is facilitated.

[0013] Optionally, two low-noise amplifiers are provided, and the two low-noise amplifiers are evenly distributed circumferentially on the side of the mounting cover.

[0014] By adopting the above scheme, the two low-noise amplifiers can amplify the signal simultaneously, thereby improving the processing efficiency of the low-noise amplifiers.

[0015] Optionally, two cavity filters are provided, and the two cavity filters are evenly distributed circumferentially on the side of the mounting cover plate, and the cavity filters are staggered with the low noise amplifier.

[0016] By adopting the above scheme, the two cavity filters can filter the signal simultaneously, improving the processing efficiency of the cavity filters. The cavity filters and low-noise amplifiers are interleaved, making the arrangement of the cavity filters and low-noise amplifiers more reasonable.

[0017] Optionally, two power dividers are provided, and the two power dividers are evenly distributed circumferentially on the side of the mounting cover.

[0018] By adopting the above scheme, the two power dividers can divide the signal simultaneously, thereby improving the processing efficiency of the power dividers.

[0019] Optionally, two tracking modulation modules are provided, and the two tracking modulation modules are evenly distributed along the circumference on the side of the mounting cover plate, and the tracking modulation modules and the power divider are staggered.

[0020] By adopting the above scheme, the two tracking modulation modules can modulate the signal simultaneously, thereby improving the processing efficiency of the tracking modulation modules.

[0021] Optionally, corner plates are fixed at each of the four corners of the tracking modulation module, and the corner plates are fixed to the second support frame by bolts.

[0022] By adopting the above scheme, it is convenient to track the installation or removal of the modulation module.

[0023] Optionally, the circular polarizer is configured as a 3D bridge.

[0024] By adopting the above scheme, the 3D bridge has the advantages of low amplitude imbalance, uniform signal distribution, low insertion loss and high signal transmission efficiency.

[0025] In summary, this application has the following technical effects:

[0026] 1. The power divider is mounted above the low-noise amplifier by the first support frame and the mounting top plate, and the tracking modulation module is mounted above the cavity filter by the second support frame, which reduces the space occupancy of the feed source and makes the feed source smaller.

[0027] 2. The housing can enclose the antenna element, low-noise amplifier, cavity filter, power divider, and tracking modulation module, thus protecting them and reducing damage from the external environment. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure of this application;

[0029] Figure 2 This is an exploded structural diagram of the installation model, summer, and circular polarizer of this application;

[0030] Figure 3 This is a schematic diagram of the structure of this application with the outer casing removed;

[0031] Figure 4 This is a schematic diagram of the structure of the front cover of this application;

[0032] Figure 5 This is a schematic diagram of the structure of the back cover of this application.

[0033] In the diagram, 1. Mounting model; 11. Inner mounting plate; 12. Mounting cover plate; 13. Outer mounting plate; 14. First support frame; 15. Mounting top plate; 16. Second support frame; 2. Antenna vibrator; 3. Sum and difference device; 4. Circular polarizer; 5. Low noise amplifier; 6. Cavity filter; 7. Power divider; 8. Tracking modulation module; 81. Corner plate; 9. Outer shell; 91. Front cover; 911. First mounting platform; 92. Rear shell; 921. Second mounting platform; 922. Third mounting platform; 923. Fourth mounting platform; 93. Rear cover; 94. Aviation insert plate; 95. Signal output interface. Detailed Implementation

[0034] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0035] This application discloses an S-band monopulse self-tracking feed. (Refer to...) Figure 1-3 An S-band monopulse self-tracking feed includes a mounting model 1, an antenna element 2, a sum / differential converter 3, a circular polarizer 4, a low-noise amplifier 5, a cavity filter 6, a power divider 7, a tracking modulation module 8, and a housing 9. The antenna element 2 is connected to the circular polarizer 4. The circular polarizer 4 is connected to the sum / differential converter 3. The sum / differential converter 3 is connected to the tracking modulation module 8. The tracking modulation module 8 is connected to the cavity filter 6. The cavity filter 6 is connected to the low-noise amplifier 5. The low-noise amplifier 5 is connected to the power divider 7. The signal received by the antenna element 2 enters the sum / differential converter 3 through the circular polarizer 4. The signal received by the sum / differential converter 3 enters the cavity filter 6 through the tracking modulation module 8. The signal filtered by the cavity filter 6 enters the low-noise amplifier 5 for amplification. The signal amplified by the low-noise amplifier 5 is then divided by the power divider 7. The power divider 7 facilitates signal output from different signal output interfaces 95.

[0036] Reference Figure 1-3 The mounting model 1 includes an inner mounting plate 11, a mounting cover plate 12, an outer mounting plate 13, a first support frame 14, a mounting top plate 15, and a second support frame 16. The antenna element 2 is fixedly mounted on one side of the inner mounting plate 11. The sum and difference device 3 and the circular polarizer 4 are fixedly mounted on the other side of the inner mounting plate 11. The circular polarizer 4 corresponds to the antenna element 2 in position. The circular polarizer 4 uses a 3D bridge circuit. The 3D bridge circuit has the advantages of low amplitude imbalance, uniform signal distribution, low insertion loss, and high signal transmission efficiency.

[0037] Reference Figure 1-3The mounting cover 12 is bolted to the side facing away from the antenna vibrator 2. The mounting cover 12 has clearance holes for the summator 3 to pass through. The outer mounting plate 13 is bolted to the outside of the inner mounting plate 11. A first support frame 14 is located on the side of the mounting cover 12 facing away from the inner mounting plate 11. Two sets of first support frames 14 are provided, symmetrically arranged on both sides of the mounting cover 12. Each set of first support frames 14 has two frames, which are fixed at intervals on the side of the mounting cover 12. The mounting top plate 15 is bolted to the top surface of the first support frame 14 on both sides. A second support frame 16 is located on the side of the mounting cover 12 facing away from the inner mounting plate 11. Two sets of second support frames 16 are provided, symmetrically arranged on both sides of the mounting cover 12, with the second support frames 16 staggered from the first support frames 14. Each set of second support frames 16 has two frames.

[0038] Reference Figure 1-3 Two low-noise amplifiers 5 are provided. The two low-noise amplifiers 5 are evenly distributed circumferentially on the side of the mounting cover plate 12. The low-noise amplifiers 5 are located below the mounting top plate 15 and are fixed to the side of the mounting cover plate 12 by bolts. Two cavity filters 6 are also provided, evenly distributed circumferentially on the side of the mounting cover plate 12. The cavity filters 6 are staggered with the low-noise amplifiers 5 and are located between the two second support frames 16. The cavity filters 6 are fixed to the side of the mounting cover plate 12 by bolts.

[0039] Reference Figure 1-3 Two power dividers 7 are provided, evenly distributed circumferentially on the side of the mounting cover plate 12. The power dividers 7 are fixed to the top surface of the mounting top plate 15 with bolts. Two tracking modulation modules 8 are also provided, evenly distributed circumferentially on the side of the mounting cover plate 12. The tracking modulation modules 8 and the power dividers 7 are arranged alternately. Corner plates 81 are fixed at each of the four corners of the bottom surface of the tracking modulation modules 8. The corner plates 81 are fixed to the second support frame 16 with bolts.

[0040] Reference Figure 1-3 The power divider 7 is mounted above the low-noise amplifier 5 via the first support frame 14 and the mounting top plate 15, and the tracking modulation module 8 is mounted above the cavity filter 6 via the second support frame 16, which reduces the space occupancy of the feed source and makes the feed source smaller.

[0041] Reference Figure 1 , Figure 3 as well as Figure 4The outer casing 9 includes a front cover 91, a rear cover 92, a rear cover 93, and an aviation insert plate 94. The front cover 91 houses the antenna element 2. A first mounting platform 911 is fixed to the inner edge of the front cover 91. The outer mounting plate 13 is fixed to the first mounting platform 911 by bolts. The front cover 91 can protect the antenna element 2 and reduce damage to the antenna element 2 from the external environment.

[0042] Reference Figure 1 , Figure 3 as well as Figure 5 The rear housing 92 encloses the low-noise amplifier 5, cavity filter 6, power divider 7, and tracking modulation module 8. Multiple second mounting platforms 921 are fixed to the inner edge of the rear housing 92. The outer mounting plate 13 is fixed to the second mounting platforms 921 by screws. Multiple third mounting platforms 922 are also fixed to the inner edge of the rear housing 92, and the third mounting platforms 922 are staggered with the second mounting platforms 921. The rear cover 93 is fixed to the third mounting platforms 922 by bolts. The rear housing 92 and rear cover 93 protect the low-noise amplifier 5, cavity filter 6, power divider 7, and tracking modulation module 8, reducing damage from the external environment to these components.

[0043] Reference Figure 1 , Figure 3 as well as Figure 5 The rear shell 92 has a notch at one end opposite to the outer mounting plate 13. A fourth mounting platform 923 is fixed to both sides of the notch on the rear shell 92. The aviation connector 94 is fixed to the fourth mounting platform 923 with bolts. A signal output interface 95 is fixedly installed on the aviation connector 94. The aviation connector 94 is designed to facilitate the installation of the signal output interface 95.

[0044] This specific embodiment is merely an explanation of this application and is not intended to limit it. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this application.

Claims

1. An S-band monopulse self-tracking feed, characterized by: The system includes a mounting model (1), an antenna vibrator (2), a sum / differential converter (3), a circular polarizer (4), a low-noise amplifier (5), a cavity filter (6), a power divider (7), a tracking modulation module (8), and a housing (9). The mounting model (1) includes an inner mounting plate (11), a mounting cover plate (12), and an outer mounting plate (13). The antenna vibrator (2) is mounted on one side of the inner mounting plate (11), the sum / differential converter (3) and the circular polarizer (4) are mounted on the other side of the inner mounting plate (11), the mounting cover plate (12) is mounted on one side of the sum / differential converter (3), and the low-noise amplifier (5) and the cavity filter (9) are mounted on the other side. 6) Installed on the side of the mounting cover (12) away from the inner mounting plate (11), the mounting cover (12) fixes two first support frames (14) on opposite sides of the low noise amplifier (5), and a mounting top plate (15) is fixed between the two first support frames (14). The power divider (7) is fixed on the mounting top plate (15). The mounting cover (12) fixes two second support frames (16) on opposite sides of the cavity filter (6). The tracking modulation module (8) is fixed on the second support frames (16). The outer mounting plate (13) is fixed on the outside of the inner mounting plate (11). The outer shell (9) is fixed on the outside of the outer mounting plate (13).

2. The S-band monopulse self-tracking feed of claim 1, wherein: The outer casing (9) includes a front cover (91), a rear cover (92), and a rear cover (93). The front cover (91) encloses the antenna vibrator (2) inside. A first mounting platform (911) is fixed at the inner edge of the front cover (91). The outer mounting plate (13) is fixed to the first mounting platform (911) by bolts. The rear cover (92) encloses the low noise amplifier (5), cavity filter (6), power divider (7), and tracking modulation module (8) inside. A second mounting platform (921) is fixed at the inner edge of the rear cover (92). The outer mounting plate (13) is fixed to the second mounting platform (921) by bolts. A third mounting platform (922) is also fixed at the inner edge of the rear cover (92). The rear cover (93) is fixed to the third mounting platform (922) by bolts.

3. The S-band monopulse self-tracking feed according to claim 2, characterized in that: The outer shell (9) also includes an aviation insert plate (94). The rear shell (92) has a notch. The rear shell (92) has a fourth mounting platform (923) fixed on both sides of the notch. The aviation insert plate (94) is fixed to the fourth mounting platform (923) by bolts. A signal output interface (95) is fixedly installed on the aviation insert plate (94).

4. The S-band monopulse self-tracking feed according to claim 1, characterized in that: Two low-noise amplifiers (5) are provided, and the two low-noise amplifiers (5) are evenly distributed circumferentially on the side of the mounting cover plate (12).

5. An S-band monopulse self-tracking feed according to claim 4, characterized in that: Two cavity filters (6) are provided, and the two cavity filters (6) are evenly arranged on the side of the mounting cover plate (12) along the circumference, and the cavity filters (6) and the low noise amplifier (5) are arranged alternately.

6. The S-band monopulse self-tracking feed according to claim 1, characterized in that: Two power dividers (7) are provided, and the two power dividers (7) are evenly distributed circumferentially on the side of the mounting cover plate (12).

7. An S-band monopulse self-tracking feed according to claim 6, characterized in that: There are two tracking modulation modules (8). The two tracking modulation modules (8) are evenly arranged on the side of the mounting cover plate (12) along the circumference, and the tracking modulation modules (8) and the power divider (7) are arranged alternately.

8. An S-band monopulse self-tracking feed according to claim 1, characterized in that: The tracking modulation module (8) has corner plates (81) fixed at each of its four corners, and the corner plates (81) are fixed to the second support frame (16) by bolts.

9. An S-band monopulse self-tracking feed according to claim 1, characterized in that: The circular polarizer (4) is configured as a 3d bridge.

Images