Dual-frequency combined feed polarized adjustment device

Abstract

The utility model discloses a kind of polarization adjustment devices of dual-frequency combined feed source, including Ku adjusting body and polarized motor being installed on feed support, the output end of polarized motor is connected with bevel gear, Ku adjusting body includes the polarization gear wheel meshing with bevel gear, Ku duplexer and Ku feed horn, polarization gear wheel is installed on feed support by connecting bearing, and is fixedly connected with Ku duplexer, the end of Ku duplexer is equipped with Ku gear, and Ku duplexer is equipped with Ku gear and Ku feed horn on the end;Feed support is equipped with Ka gear meshing with Ku gear through bearing seat, Ka feed horn is installed on Ka gear. The utility model discloses a kind of polarization adjustment devices of dual-frequency combined feed source, can provide rotary torque by polarized motor power rotation, drive Ku feed horn to do circular motion around horn mouth face rotation center, simultaneously also realize the linkage of Ka feed horn and Ku feed horn, complete Ka frequency band's left and right spin polarization switching and Ku frequency band's linear polarization adjustment, realize the matching to the polarization direction of incoming wave.

Description

Technical Field

[0001] This utility model relates to the field of satellite communication technology, and more specifically, to a dual-frequency combined feed polarization adjustment device. Background Technology

[0002] In the field of satellite communications, polarization technology is a key means to improve spectrum utilization and ensure the stability of communication links. By controlling the polarization direction of electromagnetic waves, it achieves orthogonal multiplexing of signals at the same frequency, effectively expanding communication capacity. With the iterative evolution of satellite communication technology, the upgrade from the traditional single Ku band to Ku / Ka dual bands has become the core trend of the new generation of satellite communication systems. In particular, the Ka band, with its wider available bandwidth and higher communication rate, can meet the needs of emerging services such as high-definition video transmission and broadband access, becoming the mainstream frequency band supporting the future development of satellite communications.

[0003] In the application of polarization methods, the control requirements for different frequency bands and polarization types vary significantly. In traditional Ku-band communication, linear polarization (including horizontal and vertical polarization) requires a polarization orthogonal converter to switch the horizontal and vertical polarization directions to match the polarization characteristics of the satellite beam; while Ka-band circular polarization, due to the stability of its polarization direction, usually does not require an additional polarization drive mechanism, and its structure is relatively simple.

[0004] However, the new generation of satellite communication systems has placed new demands on the polarization control of the Ka band: to adapt to the polarization characteristics of Ka band satellite beams and the communication needs of various scenarios, it is necessary to have the ability to quickly switch the circular polarization rotation direction (such as left-hand circular polarization and right-hand circular polarization). Existing technologies for Ka band circular polarization rotation direction switching mostly follow the traditional multi-drive system architecture, that is, to realize polarization direction control and rotation direction switching through independent drive mechanisms, or to decompose two sets of polarizers into four ports: a transmit left-hand rotation port, a transmit right-hand rotation port, a receive left-hand rotation port, and a receive right-hand rotation port, and then use two waveguide switches to switch channels. The overall structure is complex, the outline size is large, and the weight is increased.

[0005] The aforementioned defects bring many limitations in practical applications: on the one hand, the larger size and weight increase the risk of overweight and overenvelopment of the entire equipment, especially for airborne or spaceborne products, reducing the platform adaptability of the product; on the other hand, the coordinated control of multiple drive systems increases the difficulty of control, reduces the reliability of the equipment, and also increases energy consumption and cost.

[0006] Therefore, how to simplify the drive system, reduce the structural volume, and lower the weight while satisfying the Ka-band circular polarization rotation switching function has become an urgent technical problem to be solved in the development of a new generation of satellite communication systems that can adapt to multiple platforms. Summary of the Invention

[0007] This invention provides a dual-frequency combined feed polarization adjustment device to solve the problems of complex and large size of existing dual-frequency combined feed polarization drive structures.

[0008] According to one aspect of this utility model, a dual-frequency combined feed polarization adjustment device is provided, comprising a Ku-type adjusting body and a polarization motor mounted on a feed support. The output end of the polarization motor is connected to a bevel gear. The Ku-type adjusting body includes a large polarization gear meshing with the bevel gear, a Ku-type duplexer, and a Ku-type feed horn. The large polarization gear is mounted on the feed support via a connecting bearing and is fixedly connected to the Ku-type duplexer. A Ku-type gear is mounted at the end of the Ku-type duplexer, and the Ku-type gear and the Ku-type feed horn are installed at the end of the Ku-type duplexer. A Ka-type gear meshing with the Ku-type gear is mounted on the feed support via a bearing seat, and a Ka-type feed horn is mounted on the Ka-type gear.

[0009] Based on the above scheme, a preferred embodiment is provided whereby a bearing cover is fitted onto the connecting bearing, and the bearing cover is connected to the polarized large gear via a Ku-type feed adapter plate.

[0010] Based on the above scheme, preferably, the bearing cover is provided with two limiting bosses; the Ku feed adapter plate is equipped with a light shield, and the feed bracket is equipped with a photoelectric switch that senses the light shield; the outer side of the light shield contacts the limiting bosses.

[0011] Based on the above scheme, preferably, the outer circular surface of the Ku duplexer is connected to a Ku-LNB through a Ku bandpass filter.

[0012] This utility model discloses a dual-frequency combined feed polarization adjustment device. By energizing and rotating the polarization motor, a torque is provided to drive the Ku feed horn to rotate around the horn aperture center in a circular motion. Through the meshing of the Ku feed gear and the Ka feed gear, the linkage between the Ka feed horn and the Ku feed horn is realized, completing the left and right rotation polarization switching of the Ka band and the linear polarization adjustment of the Ku band, thereby achieving the matching of the incoming wave polarization direction.

[0013] Compared with the prior art, the dual-frequency combined feed polarization adjustment device of this utility model completes the dual-frequency drive switching with one drive, reducing one drive system, with a compact structure, which reduces the overall volume and weight to a certain extent. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. In the drawings:

[0015] Figure 1 This is a schematic diagram of the dual-frequency combined feed polarization adjustment device of this utility model;

[0016] Figure 2 This is a three-dimensional view of the dual-frequency combined feed polarization adjustment device of this utility model.

[0017] Figure 3 This is a first-state perspective view of the dual-frequency combined feed polarization adjustment device of this utility model.

[0018] Figure 4 This is a perspective view of the second state of the dual-frequency combined feed polarization adjustment device of this utility model.

[0019] Figure 5 This is a schematic diagram of the dual-frequency combined feed polarization adjustment device of this utility model.

[0020] Explanation of icon numbers:

[0021] 10. Feed source bracket;

[0022] 1. Ku-type regulating body; 11. Polarizing gear; 12. Ku-type duplexer; 14. Connecting bearing; 15. Bearing cover; 16. Limiting boss; 17. Light shield; 18. Photoelectric switch; 19. Ku-type feed adapter plate; 22. Ku-LNB; 23. Ku-type gear; 24. Ku-type feed horn; 25. Ka-type gear; 26. Ka-type feed horn;

[0023] 2. Polarized motor; 20. Bevel gear. Detailed Implementation

[0024] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0025] It should be understood that, when used in this specification and the appended claims, the term "comprising" indicates the presence of a descriptive feature, integral, step, operation, element, and / or component, but does not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or sets.

[0026] To keep the drawings concise, each figure only schematically shows the parts relevant to this utility model, and they do not represent the actual structure of the product. Furthermore, for ease of understanding, in some figures, only one of the components with the same structure or function is schematically depicted, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one."

[0027] It should also be further understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0028] In the embodiments shown in the accompanying drawings, the directional indications (such as up, down, left, right, front, and back) used to explain the structure and movement of the various components of this invention are relative rather than absolute. These descriptions are appropriate when these components are in the positions shown in the drawings. If the descriptions of the positions of these components change, these directional indications also change accordingly.

[0029] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0030] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the specific implementation methods of this utility model will be described below with reference to the accompanying drawings. Obviously, the drawings described below are merely some embodiments of this utility model. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without any creative effort.

[0031] Please see Figure 1 and combined Figure 2 and Figure 3 As shown, a dual-frequency combined feed polarization adjustment device of this utility model includes a Ku adjustment body 1 and a polarization motor 2 mounted on a feed bracket 10. The polarization motor 2 is mounted on the feed bracket 10 through a motor mounting base, and the output end of the polarization motor 2 is connected to a bevel gear 20.

[0032] The Ku-adjusting body 1 of this utility model includes a polarization gear 11 meshing with a bevel gear 20, a Ku duplexer 12, and a Ku feed horn 24. The polarization gear 11 is mounted on the feed bracket 10 via a connecting bearing 14. The connecting bearing 14 is fixedly connected to the Ku duplexer 12. A Ku gear 23 is mounted at the end of the Ku duplexer 12, and a Ku feed horn 24 that rotates with the Ku gear 23 is mounted at the end of the Ku duplexer 12. A Ka gear 25 meshing with the Ku gear 23 is mounted on the feed bracket 10 via a bearing seat, and a Ka feed horn 26 is mounted on the Ka gear 25.

[0033] Please continue reading. Figure 4 and Figure 5 As shown, the connecting bearing 14 of this utility model is fitted with a bearing cover 15, and the bearing cover 15 is connected to the polarized large gear 11 through a Ku feed adapter plate 19.

[0034] During operation, the polarization motor 2 provides torque, driving the bevel gear 20 to rotate. This, in turn, drives the large polarization gear 11 to rotate the Ku gear 23. The rotation of the Ku gear 23 drives the Ku feed horn 24 to rotate around the center of rotation of the horn aperture. Simultaneously, the Ku gear 23 meshes with the Ka gear 25, achieving linkage between the Ka feed horn 26 and the Ku feed horn 24. Thus, by rotating the entire Ku feed and LNB, the entire rotation angle range of the Ku feed horn 24 is ≥180°. During the rotation of the Ku feed horn 24, when the Ku-lnb 22 output level reaches its maximum for the first time, the position reached at this point is either the horizontal or vertical polarization position. Rotating another 90° from this position achieves horizontal or vertical polarization matching in the Ku band.

[0035] During the rotation of the Ku-band feed horn 24, the Ka-band feed horn 26 and its connected polarizer are in a linked state, enabling different relative positions between the duplexer feed outlet and the circular polarizer feed inlet of the Ka-band feed horn 26. During the rotation of the circular polarizer, when the Ka-lnb output level reaches its maximum for the first time, the position reached is the first left-hand or right-hand rotation position. Rotating 90° further from this position allows for left-hand or right-hand rotation switching in the Ka band, achieving matching with the incoming wave polarization direction.

[0036] This utility model provides two limiting bosses 16 with a ≥180° angle on the bearing cover 15; a light shield 17 is installed on the Ku feed adapter plate 19, and a photoelectric switch 18 that senses the light shield 17 is installed on the feed bracket 10, with the outer side of the light shield 17 in contact with the limiting bosses 16.

[0037] The light-shielding plate moves relative to the bearing cover 15. Due to the two mechanical limiting bosses 16 on the bearing cover 15, the light-shielding plate moves to a certain angle and contacts the bosses, the movement stops, and the feedback signal reverses the movement, realizing polarized rotational movement within a certain angle range.

[0038] Furthermore, the outer circular surface of the Ku duplexer 12 of this invention is connected to a Ku-LNB22 via a Ku bandpass filter.

[0039] This utility model discloses a dual-frequency combined feed polarization adjustment device. By energizing and rotating the polarization motor 2, a rotational torque is provided to drive the Ku feed horn 24 to rotate around the horn aperture center in a circular motion. At the same time, the linkage between the Ka feed horn 26 and the Ku feed horn 24 is realized, completing the left and right rotation polarization switching of the Ka band and the linear polarization adjustment of the Ku band, and achieving matching of the incoming wave polarization direction.

[0040] Finally, the method in this application is merely a preferred embodiment and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the scope of protection of this utility model. During the rotation of the Ku-band feed horn, linear polarization adjustment of the Ku band is achieved; simultaneously, the Ka-band feed horn and its connected polarizer are in a linked state, realizing different relative positions between the duplexer power output and the circular polarizer power input of the Ka-band feed horn. When rotated 90° apart, left and right rotational polarization switching of the Ka band can be implemented, achieving matching of the incoming wave polarization direction.

[0041] Finally, the method described in this application is merely a preferred embodiment and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A dual-frequency combined feed polarization adjustment device, characterized in that, The device includes a Ku-type regulating body and a polarization motor mounted on a feed support. The output end of the polarization motor is connected to a bevel gear. The Ku-type regulating body includes a large polarization gear meshing with the bevel gear, a Ku-type duplexer, and a Ku-type feed horn. The large polarization gear is mounted on the feed support via a connecting bearing and is fixedly connected to the Ku-type duplexer. A Ku-type gear is mounted at the end of the Ku-type duplexer, and the Ku-type gear and the Ku-type feed horn are also mounted at the end of the Ku-type duplexer. A Ka-type gear meshing with the Ku-type gear is mounted on the feed support via a bearing seat, and a Ka-type feed horn is mounted on the Ka-type gear.

2. The dual-frequency combined feed polarization adjustment device as described in claim 1, characterized in that, The connecting bearing is fitted with a bearing cover, and the bearing cover is connected to the polarized large gear through a Ku feed adapter plate.

3. The dual-frequency combined feed polarization adjustment device as described in claim 2, characterized in that, The bearing cover is provided with two limiting bosses; the Ku feed adapter plate is equipped with a light shield, and the feed bracket is equipped with a photoelectric switch that senses the light shield. The outer side of the light shield contacts the limiting bosses.

4. The dual-frequency combined feed polarization adjustment device as described in claim 1, characterized in that, The outer circular surface of the Ku duplexer is connected to a Ku-LNB via a Ku bandpass filter.

Images