CN209880772U

CN209880772U - High-power polarization tracker

Info

Publication number: CN209880772U
Application number: CN201920090699.3U
Authority: CN
Inventors: 江小云
Original assignee: Chengdu Sanlian Micro-Communication Technology Co Ltd
Current assignee: Chengdu Sanlian Micro-Communication Technology Co Ltd
Priority date: 2019-01-21
Filing date: 2019-01-21
Publication date: 2019-12-31
Anticipated expiration: 2029-01-21

Abstract

The utility model provides a high-power polarization tracker. The polytetrafluoroethylene waveguide coupling device comprises a circular waveguide, wherein a high-power crochet hook is arranged in the circular waveguide, the high-power crochet hook is connected with a copper needle, the copper needle is positioned in polytetrafluoroethylene, the front section of the polytetrafluoroethylene is fixed on a base, the base penetrates through a ball bearing, the outer diameter of the ball bearing is connected with the circular waveguide, the middle section of the polytetrafluoroethylene penetrates through a rectangular waveguide tube, the waveguide tube is provided with an output flange, the tail end of the polytetrafluoroethylene is connected with a stepping motor through a coupling, and the stepping motor and the rectangular waveguide are fixed into a whole. The utility model designs a powerful crochet hook of a section can promote the power capacity of product greatly, and stable in structure is reliable, and the machine adds conveniently, has better practical prospect in fields such as satellite communication.

Description

High-power polarization tracker

Technical Field

The utility model relates to a satellite communication field especially relates to a high-power crochet hook polarization tracker.

Background

The polarization tracker is an important device widely applied in the fields of satellite communication and the like, and has the function of realizing polarization tracking in a feed source system through rotation of a crochet needle in a circular waveguide. That is, two orthogonal lines in the circular waveguide are polarized, and the polarized wave in any direction generated after synthesis is found out. The high-power crochet needle polarization tracker has the advantages of low loss, large power capacity, compact structure, reliable performance and the like. In recent years, with the rapid development of microwave communication, satellite communication and aerospace technologies, communication systems are used more and more frequently, and communication at any time and any place, whether for military use or civil use, has become a symbolic reference. This puts increasing demands on the performance index of the mobile antenna. Most vehicle-mounted antennas are in irregular operation, especially in a mountain road bumpy state, and at the moment, the time for adjusting the polarization angle by rotating the antenna is slow, and signal instability and even signal interruption can be caused. Therefore, in the design of the planar antenna, polarization tracking is provided to realize the independent tracking polarization tracker. At present, a plurality of structures for realizing the function are provided, and most of the structures are matched with a circular joint through an L-shaped joint or a straight joint to track polarized waves in an orthogonal mode coupler. This type of structure, while simple, occupies space resources. Today with high integration, the volume requirement is higher and higher, and the structure is more and more apparent. Currently, there is a polarization tracker with a crochet hook structure in the existing products. The structure meets the requirement of high integration level, but in the process of use, the hooked needle is often found to fall out, so that the power amplifier is burnt. In addition, at high altitude, the power borne by the structure is extremely low, and the use requirement can not be met completely.

In order to solve the above problem, the utility model provides a high-power crochet hook polarization tracker. The polarization tracker has stable and reliable structure, low loss and small phase fluctuation during rotary work. According to the embodiment of the Ku frequency band, the radio frequency power of more than 200W can be borne through detection, and a large amount of space is saved for a system structure due to high integration. The structure of the product is extremely simple, and machining difficulty is reduced to a great extent. Such an excellent improvement would have a wide prospect in satellite communications.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model discloses a technical scheme is: a novel crochet hook structure is used and sequentially comprises a circular waveguide, a high-power crochet hook, a coaxial converter and a motor from top to bottom.

A high-power polarization tracker is characterized in that a high-power crochet hook is arranged in a circular waveguide, the high-power crochet hook is connected with a copper needle, the copper needle is located in polytetrafluoroethylene, the front section of the polytetrafluoroethylene is fixed on a base, the base penetrates through a ball bearing, the outer diameter of the ball bearing is connected with the circular waveguide, the base and the ball bearing are locked by a gasket, the middle section of the polytetrafluoroethylene penetrates through a rectangular waveguide tube, the rectangular waveguide tube is provided with an output flange, the tail end of the polytetrafluoroethylene is connected with a stepping motor through a coupler, and the stepping motor and the rectangular waveguide are fixed into a whole.

Furthermore, the machining mode of the high-power crochet hook is linear cutting. The thickness of the high-power crochet hook is 2MM, the width of the high-power crochet hook is 2MM, and the high-power crochet hook is made of brass. The top end of the high-power crochet hook is arranged in the middle of the circular waveguide. The bending number of the high-power crochet hook is 2.

Further, the bottom end of the high-power crochet hook is connected with a copper needle; processing on the copper needle lathe, the anterior segment possess the concentric circles, and the middle section has the screw thread, and the end is the copper needle.

Further, the gasket is provided with threads, and the base is provided with threads.

Furthermore, polytetrafluoroethylene penetrates through the whole device, the front section of the polytetrafluoroethylene is connected with the base, and the tail end of the polytetrafluoroethylene is connected with the stepping motor.

The design of the high-power crochet hook is connected with a coaxial converter, the coaxial converter is fixed, and the integral structure is integrated.

The circular waveguide protects the crochet hook and conducts polarized waves in any direction.

The high-power crochet hook adopts an ingenious scheme and an integrated design. To increase the power capacity, the structure of the crochet hook becomes a planar model.

The coaxial converter is used for two times of coaxial switching, and is switched coaxially by a circular waveguide and then is switched coaxially by a rectangular waveguide.

The motor is a numerical control stepping motor.

Preferably, the circular waveguide input port adopts a TE11 orthogonal degenerate mode.

Preferably, the high-power crochet hook guides polarized electric waves, so that radio-frequency signals are guided to the coaxial line.

Preferably, the coaxial conversion guides the radio frequency signal of the circular waveguide to the rectangular waveguide through the coaxial line, i.e. the TE11 mode in the circular waveguide is converted into the TE10 mode to be output.

Preferably, the motor is a numerical control progressive motor and is used for rotating the crochet hook and the coaxial converter.

The existing product crochet hook is formed by adopting phi 1 needles through manual debugging, has the defects of difficult production rejection rate, insufficient power and low reliability, and is integrally formed by linearly cutting a plate with the thickness of 2MM, so that the strength of a single-area electric field can be reduced, and the power capacity is greatly increased. When the conductor generates heat, the design with larger metal area can also radiate the heat in time. The coaxial conversion is that a phi 2.5 copper needle is used as an inner conductor, wherein a part of the length adopts a thread structure, and when part of threads enter a medium, the part without the threads plays a positioning role. The center of the copper needle is provided with a concentric circle, which is an important structure for connecting the crochet hook and the copper needle. The connection between the two is made by soldering. The design of this structure has not only guaranteed the concentricity of crochet hook, still plays reliable and stable effect. And finally, the stepping motor connects the medium and the crochet hook through a coupler.

Drawings

Fig. 1 is a schematic diagram of the design scheme of the high-power crochet needle polarization tracker implemented by the utility model.

Fig. 2 is a schematic diagram of the working principle of the high-power crochet needle polarization tracker.

Fig. 3 the utility model discloses implement the whole model structure chart of high-power crochet hook polarization tracker.

Fig. 4 is a schematic diagram of a crochet needle and copper needle model for implementing the high-power crochet needle polarization tracker of the utility model.

Fig. 5 is a schematic diagram of the hook needle and copper needle structure of the high-power hook needle polarization tracker implemented in the present invention.

Fig. 6 shows the medium structure of the high-power crochet needle polarization tracker of the present invention.

Fig. 7 is a schematic diagram of the overall structure of the high-power crochet needle polarization tracker.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that 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 work belong to the protection scope of the present invention.

A high-power crochet needle polarization tracker. The novel high-power crochet hook polarization tracker comprises a circular waveguide, a high-power crochet hook, a coaxial converter and a stepping motor. The circular waveguide is used for conducting the synthesized linearly polarized wave; the high-power crochet needle is used for tracking linearly polarized waves in the circular waveguide, finding and converting the TE11 mode into a TEM mode; the coaxial converter is used for converting the TEM into a TE10 mode and then outputting the TE10 mode; the stepping motor is used for rotating the high-power crochet needle so as to find out linear polarization waves in the high-power crochet needle.

The high-power crochet needle polarization tracker has the advantages of stable structure, small phase fluctuation in the rotation process, large bearing power, simple structure and small loss.

FIG. 1 is a schematic diagram of the design scheme of the present invention. The device comprises a 101 circular waveguide, 102 high-power crochet needles, 103 coaxial converters and 104 stepping motors. The 101 circular waveguide is used for conducting the synthesized linearly polarized wave and has an important function of protecting internal key components; 102, the high-power crochet needle is used for tracking linearly polarized waves in the circular waveguide, finding and converting the TE11 mode into a TEM mode; 103 coaxial converter, which is used to convert TEM into TE10 mode and then output; 104 the stepping motor is used for rotating the high-power crochet hook;

fig. 2 is a schematic diagram of the working principle of the present invention. 105 is the polarization direction of the linearly polarized wave; the left graph 102 shows the initial state of the high power crochet hook, and the right graph 102 shows the polarization direction vector diagram found for the high power crochet hook. 106 represents horizontal polarized waves and vertical polarized waves with any different amplitudes, and linear polarized waves with unknown directions are formed in the circular waveguide; 107, finding the linearly polarized wave for the high-power crochet hook, and then converting the TE11 mode into a TEM mode; 108 are coaxial converters that convert the TEM mode to the TE10 mode and then output through a rectangular waveguide.

Fig. 3 is a schematic structural diagram of an overall model according to an embodiment of the present invention. The waveguide comprises 101 circular waveguides, 102 high-power crochet needles, 109 copper needles, 113 media and 114 rectangular waveguides.

Fig. 4 is a schematic diagram of a crochet needle and copper needle model according to an embodiment of the invention. The device comprises a 101 circular waveguide, 102 high-power crochet needles and 109 copper needles.

Fig. 5 is a schematic view of a mechanical structure of the crochet hook and the copper needle according to the embodiment of the invention. 102 high-power crochet hook is a key part of the design, adopts an integrated design, has the Wa value of 2MM, is the thickness of the crochet hook, is made of brass, is finished by one-step wiring of a wire cutting machine, and is not critical in both belt precision and form change. The crochet hook is widened and thickened, and the density of the whole electric field is reduced, so that the power capacity is increased; 109 is coaxial line inner conductor, and phi 2.5 copper needle is adopted. The component is a key part of the coaxial converter and transmits the radio frequency signal transmitted by the circular waveguide to the rectangular waveguide for output; 111 is the central circle of the copper needle center, the concentric circle is directly controlled by the lathe, and the control of the whole processing is directly given to the lathe, thereby avoiding any manual operation; 110 is a thread on the copper needle, and when the copper needle enters the medium, the copper needle and the medium are firmly fixed; 112 is a positioning module of the copper needle and the medium, and after the copper needle thread enters the medium, the concentricity of the copper needle and the medium can be ensured.

FIG. 6 is a schematic diagram of a media structure according to an embodiment of the invention. 113 is the medium in coaxial conversion, and plays the role of fixing the copper needle and connecting the stepping motor. In this coaxial line, polytetrafluoroethylene is used as a support; 116 are concentric circles of teflon. So that the copper needle enters concentrically with the medium.

Fig. 7 is a schematic overall structure diagram of the embodiment of the present invention. Generally comprises 104 a stepping motor; 120 connecting the bracket; 119 is BJ120 flange; 115 a coupling; 114 is a BJ120 waveguide port; 113 polytetrafluoroethylene; 109 copper needles; 101 a circular waveguide; 102 high power crochet hook. 117 is a deep groove ball bearing, and 121, 118 and 117 form a rotating system of the high-power crochet hook together.

The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all the equivalent structures or equivalent processes that are used in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A high power polarization tracker comprising a circular waveguide (101), characterized in that, a high-power crochet hook (102) is arranged in the circular waveguide (101), the high-power crochet hook (102) is connected with a copper needle (109), the copper needle (109) is positioned in polytetrafluoroethylene (113), the front section of the polytetrafluoroethylene (113) is fixed on a base (118), the base (118) passes through a ball bearing (117), the outer diameter of the ball bearing (117) is connected with the circular waveguide (101), the base and the ball bearing are locked by a gasket (121), the middle section of the polytetrafluoroethylene (113) passes through a rectangular waveguide tube (114), the rectangular waveguide tube (114) is provided with an output flange (119), the tail end of the polytetrafluoroethylene (113) is connected with the stepping motor (104) through a coupling (115), the stepping motor (104) and the rectangular waveguide tube (114) are fixed into a whole; the machining mode of the high-power crochet hook (102) is linear cutting; the thickness of the high-power crochet hook (102) is 2MM, the width of the high-power crochet hook is 2MM, and the high-power crochet hook is made of brass; the top end of the high-power crochet hook (102) is arranged in the middle of the circular waveguide; the bending number of the high-power crochet hook (102) is 2; the bottom end of the high-power crochet hook (102) is connected with the copper needle; the copper needle (109) is machined on a lathe, the front section of the copper needle is provided with concentric circles, the middle section of the copper needle is provided with threads, and the tail end of the copper needle is provided with the copper needle.

2. High power polarization tracker according to claim 1, characterized in that the washer (121) is threaded and the base (118) is threaded.

3. A high power polarization tracker in accordance with claim 1, wherein the ptfe (113), throughout the device, is attached to a base (118) at the front end and to a stepper motor (104) at the end.