CN218569232U - Compact self-tracking linear polarization feed source - Google Patents
Compact self-tracking linear polarization feed source Download PDFInfo
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- CN218569232U CN218569232U CN202223226224.3U CN202223226224U CN218569232U CN 218569232 U CN218569232 U CN 218569232U CN 202223226224 U CN202223226224 U CN 202223226224U CN 218569232 U CN218569232 U CN 218569232U
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Abstract
The utility model relates to a satellite communication equipment technical field, concretely relates to compact self-tracking linear polarization feed, it includes: the shell is of a cylindrical structure; TE 21 Mode trackers, TE 21 The mould tracker is embedded in the shell through a bearing; the loudspeaker passes through the first connecting seat and the TE 21 The mould tracker is coaxially connected and the free end of the horn is provided withA support frame is arranged; an orthogonal device connected with the TE through a second connecting seat 21 The mode tracker is coaxially connected, and two opposite sides of the orthorhombic device are respectively connected with a low-pass filter; the driving gear ring is arranged in a driving gear ring orthogonalizer and is connected with the free ends of the two low-pass filters through the driving gear ring orthogonalizer; the waveguide joint comprises a rotating ring connected with the orthogonal device and a fixed ring in rotating fit with the rotating ring; the rotary core of the encoder is coaxially connected with the rotary ring. The utility model provides a compact self-tracking linearly polarized feed reaches the characteristics of the little volume of feed, little inertia, high reliability and accurate angle output.
Description
Technical Field
The utility model relates to a satellite communication equipment technical field, concretely relates to compact self-tracking linear polarization feed.
Background
The communication in motion is a short for a mobile satellite ground station communication system, and through the communication in motion system, mobile carriers such as vehicles, ships, airplanes and the like can track platforms such as satellites and the like in real time in the motion process, and multimedia information such as voice, data, images and the like can be uninterruptedly transmitted, so that the requirements of various military and civil emergency communication and multimedia communication under mobile conditions can be met. The satellite communication system consists of a satellite self-tracking system and a satellite communication system. The satellite self-tracking system is used for ensuring the accurate pointing of the satellite transmitting antenna to the satellite when the carrier moves.
In a small-caliber communication-in-motion antenna system, if the uplink communication capacity is to be improved, a high-power amplifier must be used, and only a paraboloid-shaped antenna can meet the high-power transmission requirement at present. Satellite frequencies applied to the communication-in-motion system are more of linearly polarized Ku frequency band. In order to ensure high-precision pointing of the satellite transmitting antenna to the satellite, the tracking system adopts TE 21 Single pulse tracking mode of the mode. The small-caliber communication antenna in motion has requirements on the installation size of the feed source under the limitation of the structural space of the carrier. After the Ku frequency band low-noise amplifier with the isolator is installed, a cantilever structure is easy to form, and a large convolution space is required when the antenna polarization is matched. Due to the asymmetric structure, the gravity center of the feed source deviates from a rotating shaft, and when the feed source requires high rotating speed to adapt to the motion of a carrier, a higher-power polarization motor needs to be selected. In order to isolate the influence of the motion process of the carrier on the polarization of the antenna, the follow-up polarization angle needs to be provided by an encoder in real time, the follow-up polarization angle is usually realized by adopting a planetary gear combination, due to the backlash and assembly errors, the accuracy of the encoder return angle information is not high, the high-quality cross polarization isolation is not easy to realize, and the frequency reuse of the antenna is not facilitated.
SUMMERY OF THE UTILITY MODEL
The utility model provides a compact self-tracking linear polarization feed realizes little volume, little inertia, compact structure, high reliability and the accurate angle output of feed.
In order to achieve the above object, the utility model provides a following technical scheme: a compact self-tracking linearly polarized feed, comprising: the shell is of a cylindrical structure, an outer cover is arranged at any one end of the shell, and a fixing flange is arranged on the outer cover; TE 21 Mode tracker of said TE 21 The mold tracker is embedded in the housing through a bearing and freely rotates, and the TE 21 One end of the mold tracker, which is far away from the fixed flange, extends towards the outside of the shell and is provided with a first connecting seat, TE 21 One end of the mould tracker corresponding to the outer cover is provided with a second connecting seat; a loudspeaker passing through the first connecting seat and the TE 21 The mould tracker is coaxially connected, and a support frame is arranged at the free end of the loudspeaker; an orthogonalizer connected to the TE through the second connecting socket 21 The mode tracker is coaxially connected, and two opposite sides of the orthogonalizer are respectively connected with a low-pass filter; the driving gear ring is arranged around the orthogonalizer and is connected with the free ends of the two low-pass filters through the orthogonalizer; the waveguide joint comprises a rotating ring connected with the orthogonal device and a fixed ring in rotating fit with the rotating ring; the encoder shell is fixedly connected with the fixed ring, and the rotating core of the encoder is coaxially connected with the rotating ring.
Preferably, the inner conductor of the waveguide joint is directly connected with the encoder electrode.
Preferably, the orthogonal device is integrally connected with a waveguide coaxial conversion device; and the low-pass filter is formed by combining an S-shaped structure and a pi-shaped elbow.
Preferably, the low-pass filter includes a sum signal filter and a difference signal filter, and the sum signal filter and the difference signal filter are symmetrically disposed at two sides of the quadrature device.
The utility model has the advantages that: all devices are processed by aluminum alloy, and a symmetrical structure design is adopted, and the design of the electric elements follows the whole layout of the structure. The waveguide coaxial conversion and the orthogonal device are integrally designed, the filter adopts an S-shaped structure, the elbow adopts an machined pi-shaped elbow, and the receiving sum signal channel and the difference signal channel are completely consistent in structure, so that the whole feed source has the advantages of small rotational inertia, compact structure, capability of realizing the axial rotation of a power line and a radio frequency line after a low-noise amplifier is installed, and high reliability.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is a schematic view of a partial structure of one end of the encoder of the present invention.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings of the present invention, and obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
According to fig. 1 and 2, a compact self-tracking linearly polarized feed source comprises: the device comprises a shell 1, wherein the shell 1 is of a cylindrical structure, an outer cover 2 is arranged at any one end of the shell 1, and a fixing flange 3 is arranged on the outer cover 2; TE 21 A mode tracker 4, said TE 21 The mold tracker 4 is rotatably fitted in the housing 1 via a bearing 15, and the TE is disposed 21 One end of the mold tracker 4 far away from the fixed flange 3 extends towards the outside of the shell 1 and is provided with a first connecting seat 5, TE 21 A second connecting seat is arranged at one end of the mould tracker 4 corresponding to the outer cover 26; a loudspeaker 7, wherein the loudspeaker 7 is connected with the TE through a first connecting seat 5 21 The mould tracker 4 is coaxially connected, and the free end of the horn 7 is provided with a support frame 8; an orthogonalizer 9, the orthogonalizer 9 is connected with the TE through the second connecting seat 6 21 The mode tracker 4 is coaxially connected, and two opposite sides of the quadrature device 9 are respectively connected with a low-pass filter; the driving gear ring 10 is arranged around the quadrature device 9 and is connected with the free ends of the two low-pass filters through the driving gear ring 10; the waveguide joint 11 comprises a rotating ring connected with the orthorhombic device 9 and a fixed ring in rotating fit with the rotating ring; the encoder 12, the 12 shells of encoder with stationary ring fixed connection, the commentaries on classics core of encoder 12 with change ring coaxial coupling.
The self-tracking linear polarization feed source in the above arrangement adopts an electromechanical integration design, and combines an original independent microwave structure, a transmission structure, an angle sensor and the like together to form a new structural form. The breadth, the support, the loudspeaker 7 and other devices are fixedly installed, and the electrical performance of the antenna is ensured to be kept relatively consistent during polarization matching. TE (TE) 21 The mode tracker 4 is a carrier of the rotating bearing 15 and can realize the extraction of microwave difference signals, so that the diameter of the feed source is reduced. The high-power microwave energy is transmitted by adopting a waveguide, the rotation of the feed source needs the waveguide joint 11 to realize the transmission continuity, the encoder 12 can obtain the rotation angle of the feed source, the inner conductor of the waveguide joint 11 is directly connected with the encoder 12 through a coupling, the number of devices is reduced, the structure size is reduced, and the accurate rotation angle is provided while the continuous output of electric signals is ensured.
Waveguide transmission is broadband transmission, and a receiving channel needs to filter transmitting frequency to ensure isolation between receiving and transmitting. The transmission channel passes through the waveguide joint 11, the straight port of the orthogonalizer 9, TE 21 The mode tracker 4 is transmitted to a horn 7 and radiates to the breadth, the sum signal of the receiving channel reaches a low-noise amplifier from the side port of the orthogonalizer 9 through a low-pass filter and a pi-shaped elbow, and the difference signal of the receiving channel reaches a low-noise amplifier from TE 21 The output of the plane synthesis network of the mode tracker 4 reaches the low noise amplifier through the waveguide coaxial conversion, the filter and the elbow.
In order to reduce the radial dimension and the rotational inertia, all devices are processed by selecting aluminum alloy, a symmetrical structure design is adopted, and the design of the electric elements follows the whole structure layout. The waveguide coaxial conversion and the orthogonal device 9 are integrally designed, the filter adopts an S-shaped structure, the elbow adopts an added pi-shaped elbow, the low-pass filter comprises a sum signal filter 14 and a difference signal filter 13, the sum signal filter 14 and the difference signal filter 13 are symmetrically arranged on two sides of the orthogonal device 9, and the structures of the sum signal filter 14 and the difference signal filter 13 are completely consistent, so that the feed source integrally achieves the effects of small rotational inertia, compact structure, axial rotation of a power line and a radio frequency line after a low-noise amplifier is installed, and high reliability.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (4)
1. A compact self-tracking linearly polarized feed, comprising:
the shell is of a cylindrical structure, an outer cover is arranged at any one end of the shell, and a fixing flange is arranged on the outer cover;
TE 21 mode tracker of said TE 21 The mold tracker is embedded in the housing through a bearing and freely rotates, and the TE 21 One end of the mold tracker, which is far away from the fixed flange, extends towards the outside of the shell and is provided with a first connecting seat, TE 21 One end of the mould tracker corresponding to the outer cover is provided with a second connecting seat;
a loudspeaker passing through the first connecting seat and the TE 21 The mould tracker is coaxially connected, and a support frame is arranged at the free end of the loudspeaker;
an orthogonalizer connected to the TE through the second connecting socket 21 The mode tracker is coaxially connected, and two opposite sides of the orthogonalizer are respectively connected with a low-pass filter;
the driving gear ring is arranged around the orthogonalizer and is connected with the free ends of the two low-pass filters through the orthogonalizer;
the waveguide joint comprises a rotating ring connected with the orthogonal device and a fixed ring in rotating fit with the rotating ring;
the encoder shell is fixedly connected with the fixed ring, and the rotating core of the encoder is coaxially connected with the rotating ring.
2. The compact self-tracking linearly polarized feed source of claim 1, wherein: the inner conductor of the waveguide joint is directly connected with the encoder electrode.
3. The compact self-tracking linearly polarized feed source of claim 1, wherein: the orthogonal device is integrally connected with a waveguide coaxial conversion device; and the low-pass filter is formed by combining an S-shaped structure and a pi-shaped elbow.
4. The compact self-tracking linearly polarized feed source of claim 3, wherein: the low-pass filter comprises a sum signal filter and a difference signal filter, and the sum signal filter and the difference signal filter are symmetrically arranged on two sides of the quadrature device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223226224.3U CN218569232U (en) | 2022-12-02 | 2022-12-02 | Compact self-tracking linear polarization feed source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223226224.3U CN218569232U (en) | 2022-12-02 | 2022-12-02 | Compact self-tracking linear polarization feed source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218569232U true CN218569232U (en) | 2023-03-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223226224.3U Active CN218569232U (en) | 2022-12-02 | 2022-12-02 | Compact self-tracking linear polarization feed source |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218569232U (en) |
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2022
- 2022-12-02 CN CN202223226224.3U patent/CN218569232U/en active Active
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