阅读说明：本技术 一种Ku/Ka频段切换装置 (Ku/Ka frequency band switching device ) 是由 高建海 王颜 武伟良 闻月娇 张硕 崔玉龙 王龙 李聪聪 白海龙 马万垒 李晓普 于 2021-08-31 设计创作，主要内容包括：本发明公开了一种Ku/Ka频段切换装置,属于卫星通信技术领域。其包括Ku/Ka波导转子、爪极组合、磁钢、隔板组合以及壳体；Ku/Ka波导转子体内并列设置有贯穿转子体的Ku频段信号通道和Ka频段信号通道,通过深沟球轴承固定在壳体的中心转轴上；爪极组合与Ku/Ka波导转子进行共轴一体化设计；壳体包括上法兰、筒壁和下法兰；隔板组合安装有两个行程开关,并设计有机械定位的圆弧槽,隔板位于壳体内部的中下位置,将壳体内空间分成上下两个腔体,上面腔体主要安装有Ku/Ka波导转子、爪极组合、以及磁钢,下面腔体主要安装的是行程开关。本发明集成度高、结构紧凑,控制简单,适合应用于小口径卫星通信天线的Ku/Ka双频共用网络中。(The invention discloses a Ku/Ka frequency band switching device, and belongs to the technical field of satellite communication. The magnetic coupling structure comprises a Ku/Ka waveguide rotor, a claw pole combination, magnetic steel, a partition plate combination and a shell; a Ku frequency band signal channel and a Ka frequency band signal channel which penetrate through the rotor body are arranged in parallel in the Ku/Ka waveguide rotor body and are fixed on a central rotating shaft of the shell through a deep groove ball bearing; the claw pole combination and the Ku/Ka waveguide rotor are coaxially and integrally designed; the shell comprises an upper flange, a cylinder wall and a lower flange; the partition board is arranged at the middle-lower position in the shell and divides the space in the shell into an upper cavity and a lower cavity, the upper cavity is mainly provided with a Ku/Ka waveguide rotor, a claw pole combination and magnetic steel, and the lower cavity is mainly provided with the travel switch. The invention has high integration level, compact structure and simple control, and is suitable for being applied to a Ku/Ka dual-frequency shared network of a small-caliber satellite communication antenna.)

1. A Ku/Ka frequency band switching device comprises an outer sleeve and is characterized by also comprising a Ku/Ka waveguide rotor which is positioned in the outer sleeve and rotates around the central axis of the outer sleeve; and the Ku/Ka waveguide rotor is provided with a Ku frequency band signal channel and a Ka frequency band signal channel which penetrate through the Ku/Ka waveguide rotor and are parallel to the central axis of the shell.

2. The Ku/Ka band switching device according to claim 1, wherein a partition plate dividing the outer sleeve into an upper cavity and a lower cavity is arranged in the outer sleeve; a rotating shaft is arranged at the center of the upper surface of the partition plate; the rotating shaft penetrates through the Ku/Ka waveguide rotor to form an eccentric shaft structure.

3. The Ku/Ka frequency band switching device according to claim 2, further comprising a claw pole combination and magnetic steel; the claw pole combination comprises two claw poles with included angles, and each claw pole is wound with a copper coil; the claw pole combination and the Ku/Ka waveguide rotor form an integrated structure and rotate around the rotating shaft; the magnetic steel comprises N-pole magnetic steel and S-pole magnetic steel which are glued on the inner wall of the outer sleeve, the magnetic steel and the claw pole combination are located at the same height, and the magnetic steel and the claw pole combination correspond to each other.

4. The Ku/Ka frequency band switching device according to claim 3, wherein the claw pole assembly further comprises a mechanical limiting column, and the mechanical limiting column is fixed in the middle position of the two claw poles; still be equipped with the arc spacing groove on the baffle, the bottom of machinery spacing post extends to the arc spacing inslot to can be at the free motion of arc spacing inslot.

5. The Ku/Ka frequency band switching device according to claim 4, wherein both ends of the arc-shaped limiting groove are provided with travel switches for triggering limiting position electric signals on the lower surface of the partition plate.

6. The Ku/Ka frequency band switching device according to claim 5, further comprising a control circuit board, wherein a switch is arranged on the control circuit board; the two claw poles are respectively connected with the positive pole and the negative pole of the control circuit board; the travel switch is also connected with the control circuit board.

7. The Ku/Ka band switching device according to claim 1, wherein the Ka band signal channel has two waveguide inlets at the bottom thereof, and the two waveguide inlets correspond to the left-handed signal and the right-handed signal, respectively.

8. The Ku/Ka band switching device of claim 7, wherein an upper flange is mounted at the top of the outer sleeve, and a lower flange is mounted at the bottom of the outer sleeve; the upper flange is provided with a Ku/Ka dual-frequency shared waveguide port corresponding to the Ku frequency band signal channel and the Ka frequency band signal channel, and the lower flange is provided with a Ku frequency band waveguide port and a Ka frequency band waveguide port.

9. The Ku/Ka frequency band switching device according to claim 4, wherein the angle of the arc-shaped limiting groove is 90 degrees; the included angle of the two claw poles is 120 degrees; the Ku frequency band signal channel and the Ka frequency band signal channel form an angle of 90 degrees relative to the rotating shaft.

Technical Field

The invention relates to the technical field of satellite communication, in particular to a Ku/Ka frequency band switching device.

Background

In recent years, with the development of satellite communication industry, C, Ku frequency band satellite resources cannot meet the increasing satellite communication demand, the working frequency of communication satellites is continuously expanded, and the application of Ka frequency band satellites is gradually expanded.

At present, the dual-frequency sharing and multi-frequency sharing technology is an important development direction of satellite communication antennas, the communication capacity can be enlarged, one station can be used for multiple purposes, and the cost is greatly reduced. The Ku frequency band satellite is widely used, and the Ka frequency band satellite gradually enters a practical stage. As satellite antennas are shifted from ground station antennas to vehicle-mounted antennas, ship-mounted antennas, airborne antennas, etc., there is a strong demand in the market for small-bore Ku/Ka dual-band satellite communication antennas. The Ku/Ka dual-frequency shared feed network is an important part of a Ku/Ka dual-frequency satellite communication antenna, and the frequency band switching device in the shared feed network is a core part of the satellite communication antenna for realizing high-precision time-sharing work in a Ku frequency band or a Ka frequency band.

Disclosure of Invention

In view of this, the invention provides a Ku/Ka band switching device, which has the characteristics of compact structure, accurate positioning, simple control and the like, and can enable a Ku/Ka dual-band satellite communication antenna to work in a Ku band or a Ka band in a high-precision time-sharing manner.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows:

a Ku/Ka frequency band switching device comprises an outer sleeve and a Ku/Ka waveguide rotor which is positioned in the outer sleeve and rotates around the central axis of the outer sleeve; and the Ku/Ka waveguide rotor is provided with a Ku frequency band signal channel and a Ka frequency band signal channel which penetrate through the Ku/Ka waveguide rotor and are parallel to the central axis of the shell.

Furthermore, a partition plate for dividing the outer sleeve into an upper cavity and a lower cavity is arranged in the outer sleeve; a rotating shaft is arranged at the center of the upper surface of the partition plate; the Ku/Ka waveguide rotor penetrates through the rotating shaft to form an eccentric shaft structure, and the Ku frequency band signal channel and the Ka frequency band signal channel are located on one side of the rotating shaft.

Furthermore, the device also comprises a claw pole combination and magnetic steel; the claw pole combination comprises two claw poles with included angles, and each claw pole is wound with a copper coil; the claw pole combination and the Ku/Ka waveguide rotor form an integrated structure and rotate around the rotating shaft; the magnetic steel comprises N-pole magnetic steel and S-pole magnetic steel which are glued on the inner wall of the outer sleeve, and the magnetic steel and the claw pole combination are located at the same height.

Furthermore, the claw pole combination also comprises a mechanical limiting column, and the mechanical limiting column is fixed in the middle of the two claw poles; still be equipped with the arc spacing groove on the baffle, the bottom of machinery spacing post extends to the arc spacing inslot to can be at the free motion of arc spacing inslot.

Furthermore, on the lower surface of the partition plate, travel switches used for triggering limit position electric signals are arranged at two ends of the arc-shaped limiting groove.

The device further comprises a control circuit board, wherein a selector switch is also arranged on the control circuit board; the two claw poles are respectively connected with the positive pole and the negative pole of the control circuit board; the travel switch is also connected with the control circuit board.

Furthermore, two waveguide inlets are arranged at the bottom of the Ku frequency band signal channel.

Furthermore, an upper flange is installed at the top of the outer sleeve, and a lower flange is installed at the bottom of the outer sleeve; the upper flange is provided with a Ku/Ka dual-frequency shared waveguide port used for being connected with the Ku/Ka dual-frequency compact feed source horn, and the lower flange is provided with a Ku frequency band waveguide port and a Ka frequency band waveguide port.

Further, the angle of the arc-shaped limiting groove is 90 degrees; the included angle of the two claw poles is 120 degrees; the Ku frequency band signal channel and the Ka frequency band signal channel form an angle of 90 degrees relative to the rotating shaft.

The invention adopts the technical scheme to produce the beneficial effects that:

1. the Ku/Ka waveguide rotor and the claw pole are combined and coaxially integrated by following the design idea of simple structure, accurate positioning and simple control, so that the overall dimension of the whole frequency band switching device is successfully reduced; the electromagnetic field principle is skillfully applied to the frequency band switching device, the attraction force or the repulsion force generated between the N, S pole and the claw pole of the magnetic steel is changed by switching the positive pole and the negative pole of the power supply, the waveguide rotor is driven to rotate, and therefore the electric switching of the Ku frequency band signal and the Ka frequency band signal is realized.

2. According to the invention, the 90-degree positioning arc groove is formed in the partition plate, so that the positioning accuracy of the frequency band switching device can be controlled within 0.05 degrees, and the high-accuracy transmission requirements of Ku frequency band signals and Ka frequency band signals are met; through travel switches at two ends of the arc groove, whether the current frequency band switching device works in a Ku frequency band or a Ka frequency band can be accurately judged. The whole Ku/Ka frequency band switching device has the advantages of high integration level, compact structure and simple control, and is suitable for being applied to a Ku/Ka double-frequency shared network of a small-caliber satellite communication antenna.

Drawings

Fig. 1 is an overall outline structural view of the present invention.

Fig. 2 is an axial view structural view of the present invention.

Fig. 3 is a side sectional view of fig. 1.

Fig. 4 is a side view of the claw-pole assembly of fig. 1.

Fig. 5 is a top view of the claw-pole assembly of fig. 1.

Fig. 6 is a bottom view of the baffle plate assembly of fig. 1.

In the figure: 1. the device comprises an upper flange, 2 parts of a cylinder wall, 3 parts of a lower flange, 4 parts of a deep groove ball bearing, 5 parts of a Ku/Ka waveguide rotor, 6 parts of a claw pole combination, 7 parts of magnetic steel, 8 parts of a partition board combination, 9 parts of a claw pole, 10 parts of a mechanical limiting column, 11 parts of a travel switch and 12 parts of a partition board.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and specific embodiments.

A Ku/Ka frequency band switching device comprises a Ku/Ka waveguide rotor, a claw pole combination, magnetic steel, a partition plate combination and a shell; the shell comprises an upper flange, a cylinder wall and a lower flange; the partition plate is positioned at the middle-lower position in the shell and divides the inner space of the shell into an upper cavity and a lower cavity;

a Ku frequency band signal channel and a Ka frequency band signal channel which penetrate through the rotor body are arranged in parallel in the Ku/Ka waveguide rotor body, the upper surface and the lower surface of the waveguide rotor are respectively provided with a section of rotating shaft, and the rotating shafts are fixed on a central rotating shaft of the shell through deep groove ball bearings; the claw pole combination comprises two claw poles and mechanical limiting columns which are distributed at 120 degrees, the claw poles and the mechanical limiting columns are coaxially integrated with the waveguide rotor, and the claw pole combination is fixed on one side of the Ku/Ka waveguide rotor, which is opposite to the signal channel, through two screws; the upper flange and the lower flange of the shell are fixedly connected with the cylinder wall through screws, and positioning rabbets are arranged to ensure the connection precision; two travel switches are installed on the partition plate combination, and an arc groove for mechanical positioning is designed.

Furthermore, the Ku/Ka waveguide rotor is of an eccentric structure, and the Ku frequency band signal channel and the Ka frequency band signal channel are distributed on one side of the rotating shaft at an angle of 90 degrees relative to the rotating shaft.

Furthermore, two claw poles of the claw pole combination are composed of a cylinder and arc blocks, the material is alloy steel, and a copper coil is wound on the cylinder.

Furthermore, the claw pole combination and the Ku/Ka waveguide rotor are both provided with key grooves, and the claw pole combination and the Ku/Ka waveguide rotor are positioned through flat keys, so that the relative position relation is accurately ensured.

Furthermore, the magnetic steel is two arc magnets which are oppositely glued on the inner side of the cylinder wall to form N, S two poles.

Furthermore, the two claw pole coils generate an electromagnetic field after being electrified, an interaction force is generated between the electromagnetic field and the magnetic steel on the cylinder wall, the Ku/Ka waveguide rotor is driven to rotate around the rotating shaft, the rotor can be controlled to rotate clockwise or anticlockwise by changing the positive and negative of the power supply, and the purpose of switching the Ku frequency band and the Ka frequency band is achieved.

Furthermore, an arc groove for mechanical positioning is machined in the partition plate assembly, the stroke is 90 degrees, the positioning precision is guaranteed to be 0.05 degree through a high-precision machine tool, and the precision requirement of frequency band switching is met; the mechanical limiting column on the claw pole combination is driven by the Ku/Ka waveguide rotor to rotate in the arc groove of the partition plate combination, so that the positioning and limiting purposes are realized; two travel switches are fixed at two ends of the arc groove of the partition plate, when the mechanical limiting column is in place, the travel switches are simultaneously triggered to send out a switching in-place signal and determine that the current position is a Ku frequency band or a Ka frequency band, and meanwhile, the frequency band switching device is powered off and keeps the position by the magnetic attraction of the magnetic steel and the claw poles.

Furthermore, the upper flange is provided with a Ku/Ka dual-frequency shared waveguide port which is connected with a Ku/Ka dual-frequency compact feed source horn; the lower flange is respectively provided with a Ku frequency band waveguide port and a Ka frequency band waveguide port, and the Ku frequency band signal and the Ka frequency band signal are transmitted in a double-frequency common feed source network in a time-sharing mode through switching a waveguide rotor.

The following is a more specific example:

referring to fig. 1 to 6, in the present embodiment, a Ku/Ka waveguide rotor and a claw pole are combined and coaxially integrated, the overall size of the entire frequency band switching device is reduced, the attraction force or the repulsion force generated between the N, S pole and the claw pole of the magnetic steel is changed by switching the positive and negative of the power supply, so as to realize the electric switching between the Ku frequency band signal and the Ka frequency band signal, and the accurate positioning is realized by assembling a 90-degree positioning arc slot on the spacer plate, so as to meet the high-precision transmission requirement of the Ku frequency band signal and the Ka frequency band signal.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows: a Ku/Ka frequency band switching device comprises a Ku/Ka waveguide rotor 5, a claw pole combination 6, magnetic steel 7, a baffle combination 8 and a shell; a Ku frequency range signal channel and a Ka frequency range signal channel which penetrate through the rotor body are arranged in parallel in the Ku/Ka waveguide rotor body and are fixed on a central rotating shaft of the shell through a deep groove ball bearing; the claw pole combination and the Ku/Ka waveguide rotor are coaxially and integrally designed and are fixed on one side of the Ku/Ka waveguide rotor opposite to the signal channel through two screws; the shell comprises an upper flange, a cylinder wall and a lower flange; the partition board is arranged at the middle-lower position inside the shell and divides the space in the shell into an upper cavity and a lower cavity, the upper cavity is mainly provided with a Ku/Ka waveguide rotor, a claw pole combination and magnetic steel, and the lower cavity is mainly provided with the travel switch.

From the appearance, the whole Ku/Ka frequency band switching device is an eccentric structure, the central axis of a main body is a rotating shaft formed by combining a Ku/Ka waveguide rotor and claw poles, a double-frequency shared waveguide port of a flange 1 on a shell is connected with a double-frequency feed source horn, a Ku frequency band waveguide port of a lower flange 3 is connected with a Ku network, the central connecting line of the Ku frequency band waveguide port and the Ku frequency band waveguide port coincides with the electric axis of a satellite-borne antenna when the antenna is installed, and the distance between the rotating shaft and the satellite-borne antenna electric axis needs to be determined through electric simulation according to index requirements.

The Ku/Ka waveguide rotor is of an eccentric structure, a Ku frequency band signal channel and a Ka frequency band signal channel are distributed on one side of a rotating shaft at an angle of 90 degrees relative to the rotating shaft, the upper surface and the lower surface of the rotor are respectively provided with a section of rotating shaft, and the rotating shafts are fixed on a central rotating shaft of a shell through deep groove ball bearings 4; the claw pole combination comprises two claw poles distributed at 120 degrees, a cylindrical mechanical limiting column is installed between the two claw poles 9, the claw pole combination and the waveguide rotor are coaxially integrated, the claw pole combination is fixed on one side, opposite to a signal channel, of a central shaft of the waveguide rotor through two screws, key grooves are formed in the claw pole combination and the waveguide rotor, the claw pole combination and the waveguide rotor are located through flat keys, the relative position relation can be accurately guaranteed, copper coils are wound on the two claw poles of the claw pole combination, and an electromagnetic field can be generated after the claw pole combination is electrified.

The baffle combination is positioned at the middle lower position inside the shell and is fixed on a stud of a lower flange of the shell through a screw, the baffle combination mainly comprises a baffle and two travel switches 11, the baffle 12 adopts special-shaped design, an arc groove for mechanical positioning and limiting is machined, the travel is 90 degrees, the positioning precision is guaranteed to be 0.05 degrees through a high-precision machine tool, a mechanical limiting column on the claw pole combination rotates in the arc groove of the baffle under the drive of a Ku/Ka waveguide rotor, and the positioning and limiting purposes are realized when the mechanical limiting column 10 rotates to two end positions of the arc groove; two travel switches are fixed at two ends of the arc groove of the partition plate, when the mechanical limiting column is in place, the travel switches are simultaneously triggered to send out a switching in-place signal and determine that the current position is a Ku frequency band or a Ka frequency band, and meanwhile, the frequency band switching device is powered off and keeps the position by the magnetic attraction of the magnetic steel and the claw poles.

The shell comprises an upper flange, a lower flange and a cylinder wall, wherein the upper flange and the lower flange are respectively provided with four threaded holes in the radial direction and are fixedly connected with the cylinder wall 2 through screws, and the upper flange and the lower flange are respectively provided with a positioning spigot which can be accurately positioned with the cylinder wall, so that the centers of the upper flange and the lower flange are superposed with a rotating shaft of the waveguide rotor, and the waveguide rotor is ensured to rotate flexibly; the upper flange is provided with a Ku/Ka dual-frequency shared waveguide port which is connected with a Ku/Ka dual-frequency compact feed source horn, the lower flange is provided with a Ku frequency band waveguide port and a Ka frequency band waveguide port respectively, and the Ku frequency band signal and the Ka frequency band signal are transmitted in a dual-frequency shared feed source network in a time-sharing manner by switching a waveguide rotor; the lower flange is also provided with a disc, 4 connecting holes are formed in the disc, and the whole Ku/Ka frequency band switching device can be fixed on a reflector of the satellite-based satellite-satellite communication antenna; the magnetic steel is two arc-shaped magnets which are oppositely adhered to the inner side of the cylinder wall to form N, S poles, when the claw pole coil is electrified, an electromagnetic field is generated to generate an interaction force with the magnetic steel on the cylinder wall to drive the Ku/Ka waveguide rotor to rotate around the rotating shaft, and the rotor can be controlled to rotate clockwise or anticlockwise by changing the positive and negative of the power supply, so that the mutual switching between the Ku frequency band and the Ka frequency band is realized.

The Ku/Ka waveguide rotor and the claw pole are combined and coaxially integrated, so that the overall dimension of the whole frequency band switching device is successfully reduced; an electromagnetic field principle is skillfully applied to the frequency band switching device, the attraction force or the repulsion force generated between the N, S pole and the claw pole of the magnetic steel is changed by switching the positive pole and the negative pole of the power supply, and the waveguide rotor is driven to rotate, so that the electric switching of the Ku frequency band signal and the Ka frequency band signal is realized; the positioning accuracy of the frequency band switching device can be controlled within 0.05 degrees by combining the 90-degree positioning arc grooves on the partition plate, so that the high-accuracy transmission requirements of Ku frequency band signals and Ka frequency band signals are met; two travel switches are fixed at two ends of the arc groove of the partition plate, when the mechanical limiting column is in place, the travel switches are simultaneously triggered to send out a switching in-place signal and determine that the current position is a Ku frequency band or a Ka frequency band, and meanwhile, the frequency band switching device is powered off and keeps the position by the magnetic attraction of the magnetic steel and the claw poles. The whole Ku/Ka frequency band switching device has the advantages of high integration level, compact structure and simple control, and is suitable for being applied to a Ku/Ka double-frequency shared network of a small-caliber satellite communication antenna.

While the principles of the invention have been described in detail in connection with the preferred embodiments thereof, it will be understood by those skilled in the art that the foregoing embodiments are merely illustrative of exemplary implementations of the invention and are not limiting of the scope of the invention. The details of the embodiments are not to be interpreted as limiting the scope of the invention, and any obvious changes, such as equivalent alterations, simple substitutions and the like, based on the technical solution of the invention, can be interpreted without departing from the spirit and scope of the invention.