KU-band circularly polarized satellite downconverter

Abstract

This utility model discloses a KU-band circularly polarized satellite downconverter, comprising a waveguide and a waveguide port connected to one end of the waveguide. The end of the waveguide away from the waveguide port has an assembly portion. The waveguide interior has a waveguide cavity, and a polarizing plate is disposed within the waveguide cavity. The polarizing plate is located on the central axis of the waveguide cavity and integrally formed therewith. The assembly portion has a first assembly hole and a second assembly hole symmetrically distributed about the central axis of the waveguide. L-shaped pins are inserted into both the first and second assembly holes. This utility model provides a KU-band circularly polarized satellite downconverter that integrates the polarizing plate with the waveguide, ensuring precise assembly of the relative positions of the polarizing plate and the waveguide cavity within the waveguide. This avoids the problems of assembly errors and instability caused by subsequent assembly in a separate design, which can affect the polarization effect.

Description

Technical Field

[0001] This utility model relates to the field of Ku-band technology, and in particular to a Ku-band circularly polarized satellite down-frequency converter. Background Technology

[0002] LNB stands for Low Noise Block downamping amplifier, which consists of a mixer and a local oscillator. LNBs are generally classified into C-band LNBs, Ku-band LNBs, and K-band LNBs. Because satellite signals are quite weak before reaching the antenna, and signal loss increases with higher frequencies transmitted via coaxial cables, LNBs are needed to amplify the signal while minimizing degradation of the signal-to-noise ratio.

[0003] Currently, the dielectric sheet inside conventional circularly polarized waveguides is set separately. Therefore, during assembly, the dielectric sheet needs to be manually inserted into the waveguide. Due to the manual assembly, its accuracy and stability are greatly affected by the material and human effort, resulting in a generally poor overall polarization effect. To address this, a Ku-band circularly polarized satellite downconverter is proposed. Utility Model Content

[0004] Based on this, it is necessary to provide a KU-band circularly polarized satellite downconverter to address the aforementioned technical problems. This design integrates the polarizer and the waveguide, ensuring precise assembly of the relative positions of the polarizer and the waveguide cavity within the waveguide, thus avoiding errors.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] A KU-band circularly polarized satellite downconverter includes a waveguide and a waveguide port connected to one end of the waveguide. The end of the waveguide away from the waveguide port has an assembly part. The waveguide has a waveguide cavity inside, and a polarizing plate is provided inside the waveguide cavity. The polarizing plate is located on the central axis of the waveguide cavity and is integrally formed with it.

[0007] Furthermore, the assembly part has a first assembly hole and a second assembly hole symmetrically distributed about the central axis of the waveguide, and an L-shaped needle is inserted into each of the first assembly hole and the second assembly hole.

[0008] Furthermore, both the first and second mounting holes are connected to the inside of the waveguide cavity, so that the inner end of the L-shaped needle extends into the waveguide cavity symmetrically about the polarization plate.

[0009] Furthermore, the inner end of the L-shaped needle is perpendicular to the polarization plate.

[0010] Furthermore, the top surface of the assembly part has an embedding groove for assembling the PCB board with its interior.

[0011] Furthermore, the waveguide has an upper end and a lower end at the end away from the assembly part. Furthermore, the polarization plate is a first dielectric polarization plate.

[0012] The polarization plate is a first dielectric polarization plate including a first protrusion. There are multiple first protrusions, which are arranged sequentially from the lower end toward the top of the inner end of the waveguide.

[0013] Furthermore, one side of the top surface of the assembly part has a blind hole.

[0014] Furthermore, the polarization plate is a second dielectric polarization plate;

[0015] The second dielectric polarization plate includes a second protrusion, and there are multiple second protrusions arranged sequentially from the upper end toward the bottom wall of the inner end of the waveguide.

[0016] Furthermore, one side of the top surface of the assembly part has a through hole.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The KU-band circularly polarized satellite downconverter provided by this utility model integrates the polarization plate and the waveguide into one unit. This ensures the precise assembly of the polarization plate relative to the waveguide cavity inside the waveguide, avoiding the problem of assembly errors and instability caused by subsequent assembly due to the separate design, which affects the polarization effect.

[0019] By distributing the L-shaped pins on the assembly part in a corresponding manner to the polarization sheet, the subsequent layout of the PCB board and the embedded slot can be facilitated. Attached Figure Description

[0020] Figure 1 A schematic diagram of the structure of the KU-band circularly polarized satellite downconverter provided by this utility model;

[0021] Figure 2 A top view of the KU-band circularly polarized satellite downconverter provided by this utility model;

[0022] Figure 3 A schematic diagram of the first dielectric polarization plate structure of the KU-band circularly polarized satellite downconverter provided by this utility model;

[0023] Figure 4 A cross-sectional schematic diagram of the first dielectric polarization plate of the KU-band circularly polarized satellite downconverter provided by this utility model;

[0024] Figure 5 A schematic diagram of the through-hole structure of the KU-band circularly polarized satellite downconverter provided by this utility model;

[0025] Figure 6 A schematic diagram of the second dielectric polarization plate structure of the KU-band circularly polarized satellite downconverter provided by this utility model.

[0026] The markings in the diagram are explained as follows:

[0027] 1. Waveguide; 11. Waveguide cavity; 12. Upper end; 13. Lower end;

[0028] 2. Waveguide port; 21. Assembly part; 22. First assembly hole; 23. Second assembly hole; 24. L-shaped pin; 25. Embedded groove; 26. Blind hole; 27. Through hole;

[0029] 240. Inner end;

[0030] 31. First dielectric polarization sheet; 32. Second dielectric polarization sheet;

[0031] 310. First boss;

[0032] 320. Second protrusion. Detailed Implementation

[0033] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0034] As described in the background section, the dielectric sheet inside conventional circularly polarized waveguides is currently set as a separate unit. Therefore, during assembly, the dielectric sheet needs to be manually inserted into the waveguide. Due to the manual assembly, its accuracy and stability are greatly affected by the material and process, resulting in a generally poor overall polarization effect.

[0035] To address this technical problem, this invention provides a Ku-band circularly polarized satellite down-frequency converter, which is applied to the Ku-band.

[0036] For details, please refer to Figures 1-6 The KU-band circularly polarized satellite downconverter specifically includes: a waveguide 1 and a waveguide port 2 connected to one end of the waveguide 1. The end of the waveguide 1 away from the waveguide port 2 has an assembly part 21. The waveguide 1 has a waveguide cavity 11 inside. A polarizing plate is provided inside the waveguide cavity 11. The polarizing plate is located on the central axis of the waveguide cavity 11 and is integrally formed with it.

[0037] The KU-band circularly polarized satellite downconverter provided by this utility model integrates the polarization plate and the waveguide 1 into one unit. This ensures the precise assembly of the relative positions of the polarization plate and the waveguide cavity 11 inside the waveguide 1, avoiding the problem of assembly errors and instability caused by subsequent assembly due to the separate design, which would affect the polarization effect.

[0038] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0039] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0040] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0041] Example 1

[0042] Please refer to Figures 1-6 As shown, a KU-band circularly polarized satellite downconverter includes a waveguide 1 and a waveguide port 2 connected to one end of the waveguide 1. The end of the waveguide 1 away from the waveguide port 2 has an assembly part 21. The waveguide 1 has a waveguide cavity 11 inside, and a polarizing plate is provided inside the waveguide cavity 11. The polarizing plate is located on the central axis of the waveguide cavity 11 and is integrally formed with it.

[0043] Specifically, the polarizer is used to convert circularly polarized signals into linearly polarized signals. That is, after the satellite downlink circularly polarized satellite signal is focused onto the waveguide cavity 11 by the offset antenna, the polarizer converts the circularly polarized signal into a linearly polarized signal. Furthermore, the waveguide cavity 11 has a circular cross-sectional shape; that is, the waveguide cavity 11 is a circular cavity. When a signal is input through the waveguide cavity 11, the circular shape of the waveguide cavity 11 results in low signal transmission loss. After the satellite television downlink signal passes through the waveguide cavity 11, noise outside the effective frequency band can be effectively filtered out, achieving extremely high anti-interference capability.

[0044] Conventional polarizers are designed as separate units, meaning that during subsequent assembly, the polarizer needs to be manually inserted into the waveguide. Because of the manual assembly, its accuracy and stability are greatly affected by the materials and human effort, resulting in a generally poor overall polarization effect.

[0045] Therefore, in this embodiment, the polarization plate and the waveguide cavity 11 are integrally formed, which ensures accurate alignment and stable connection between the waveguide cavity 11 and the polarization plate, and avoids the problem of assembly errors and instability caused by subsequent assembly due to the split design, which affects the polarization effect.

[0046] Example 2

[0047] The KU-band circularly polarized satellite downconverter provided in Example 1 has been further optimized, specifically, as follows: Figure 4 As shown, the assembly part 21 has a first assembly hole 22 and a second assembly hole 23 symmetrically distributed about the central axis of the waveguide 1, and an L-shaped needle 24 is inserted into both the first assembly hole 22 and the second assembly hole 23.

[0048] The first mounting hole 22 and the second mounting hole 23 are both connected to the inside of the waveguide cavity 11, so that the inner end 240 of the L-shaped needle 24 extends into the waveguide cavity 11 symmetrically about the polarization plate.

[0049] In this embodiment, the two L-shaped pins 24 are symmetrically distributed on the assembly part 21 about the polarization plate. This symmetrical arrangement is convenient and beneficial for subsequent PCB layout and assembly.

[0050] The inner end 240 of the L-shaped needle 24 is perpendicular to the polarization plate;

[0051] The top surface of the assembly part 21 has an embedding groove 25, which is used for the assembly of the PCB board and its interior. After the PCB board is snapped into the embedding groove 25, there is still space at the top of the embedding groove 25. This space is used for the assembly of the top cover plate, thereby pressing and fixing the PCB board to achieve a protective effect while improving the overall aesthetic effect.

[0052] The waveguide 1 has an upper end position 12 and a lower end position 13 at the end away from the assembly part 21.

[0053] Example 3

[0054] The KU-band circularly polarized satellite downconverter provided in Embodiment 1 or 2 is further optimized, such as... Figures 1-4 As shown, the polarization plate is a first dielectric polarization plate 31;

[0055] The polarization plate is a first dielectric polarization plate 31, which includes a first protrusion 310. There are multiple first protrusions 310, and the multiple first protrusions 310 are arranged sequentially from the lower end position 13 toward the top of the inner end of the waveguide 1.

[0056] One side of the top surface of the assembly part 21 has a blind hole 26;

[0057] like Figure 4 As shown, in this embodiment, the first protrusion 310 is inclined upward in a progressive manner towards the right side. In this way, multiple first protrusions 310 can be combined to form a first dielectric polarization sheet 31, which is used to convert circular polarization signals into linear polarization signals.

[0058] Example 4

[0059] The KU-band circularly polarized satellite downconverter provided in Example 3 has been further optimized, such as... Figure 5 and Figure 6 As shown, the polarization plate is a second dielectric polarization plate 32;

[0060] The second dielectric polarization plate 32 includes a second protrusion 320, and there are multiple second protrusions 320. The multiple second protrusions 320 are arranged sequentially from the upper end position 12 toward the bottom wall of the inner end of the waveguide 1.

[0061] The top surface of the assembly part 21 has a through hole 27 on one side;

[0062] The difference between this embodiment and Embodiment 3 is that the second dielectric polarization sheet 32 ​​in this embodiment is reversed compared to the first dielectric polarization sheet 31 in the previous embodiment. Specifically, as shown below... Figure 6 As shown, in this embodiment, the multiple second protrusions 320 are progressively arranged with decreasing height towards the lower right side. After being distributed in sequence, the multiple second protrusions 320 can be combined to form a second dielectric polarization sheet 32, which is used to convert circular polarization signals into linear polarization signals.

[0063] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0064] Obviously, the embodiments described above are only some embodiments of this utility model, not all embodiments. The accompanying drawings show preferred embodiments of this utility model, but do not limit the patent scope of this utility model. This utility model can be implemented in many different forms; rather, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this utility model specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the patent protection scope of this utility model.

Claims

1. A Ku-band circularly polarized satellite down-frequency converter, characterized in that, It includes a waveguide (1) and a waveguide port (2) connected to one end of the waveguide (1). The end of the waveguide (1) away from the waveguide port (2) has an assembly part (21). The waveguide (1) has a waveguide cavity (11) inside. A polarizing plate is provided inside the waveguide cavity (11). The polarizing plate is located on the central axis of the waveguide cavity (11) and is integrally formed with it.

2. The KU-band circularly polarized satellite down-frequency converter according to claim 1, characterized in that, The assembly part (21) has a first assembly hole (22) and a second assembly hole (23) symmetrically distributed about the central axis of the waveguide (1). An L-shaped needle (24) is placed in both the first assembly hole (22) and the second assembly hole (23).

3. The KU-band circularly polarized satellite down-frequency converter according to claim 2, characterized in that, The first mounting hole (22) and the second mounting hole (23) are both connected to the inside of the waveguide cavity (11), so that the inner end (240) of the L-shaped needle (24) extends into the waveguide cavity (11) symmetrical about the polarization plate.

4. The KU-band circularly polarized satellite down-frequency converter according to claim 3, characterized in that, The inner end (240) of the L-shaped needle (24) is perpendicular to the polarization plate.

5. The KU-band circularly polarized satellite down-frequency converter according to claim 1, characterized in that, The top surface of the assembly part (21) has an embedding groove (25) for assembling the PCB board with its interior.

6. The KU-band circularly polarized satellite down-frequency converter according to claim 1, characterized in that, The waveguide (1) has an upper end (12) and a lower end (13) at the end away from the assembly part (21).

7. The KU-band circularly polarized satellite down-frequency converter according to claim 6, characterized in that, The polarization plate is a first dielectric polarization plate (31). The polarization plate is a first dielectric polarization plate (31) including a first boss (310). There are multiple first bosses (310), and the multiple first bosses (310) are arranged sequentially from the lower end (13) toward the top of the inner end of the waveguide (1).

8. The KU-band circularly polarized satellite down-frequency converter according to claim 7, characterized in that, The assembly part (21) has a blind hole (26) on one side of its top surface.

9. The KU-band circularly polarized satellite down-frequency converter according to claim 6, characterized in that, The polarization plate is a second dielectric polarization plate (32). The second dielectric polarization plate (32) includes a second protrusion (320), and there are multiple second protrusions (320). The multiple second protrusions (320) are arranged sequentially from the upper end position (12) toward the bottom wall of the inner end of the waveguide (1).

10. The KU-band circularly polarized satellite down-frequency converter according to claim 9, characterized in that, The assembly part (21) has a through hole (27) on one side of its top surface.

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