CN218334343U - Reflector antenna and vehicle-mounted tracking device - Google Patents
Reflector antenna and vehicle-mounted tracking device Download PDFInfo
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- CN218334343U CN218334343U CN202222075548.5U CN202222075548U CN218334343U CN 218334343 U CN218334343 U CN 218334343U CN 202222075548 U CN202222075548 U CN 202222075548U CN 218334343 U CN218334343 U CN 218334343U
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Abstract
The application relates to a reflector antenna and vehicle-mounted tracking equipment, wherein the reflector antenna comprises a reflector, a turntable assembly and a feed source moving device, the reflector and the feed source moving device are connected to the turntable assembly, and the reflector and the feed source moving device can move in opposite directions by taking the turntable assembly as a rotating shaft; the feed source mobile device comprises a feed source mobile platform and a feed source system arranged on the feed source mobile platform, wherein the feed source system can move on the feed source mobile platform, and is positioned in a focal plane corresponding to the focal point of the reflecting surface when moving. The device can track the communication satellite tracking the blind area.
Description
Technical Field
The application relates to the technical field of satellite tracking, in particular to a reflector antenna and vehicle-mounted tracking equipment.
Background
With the continuous development of positioning technology, in the process of positioning and tracking a communication satellite, an antenna is required to have high gain, and a reflector antenna is the most widely used high gain antenna.
In the related art, the reflector antenna generally adjusts the azimuth speed by using an azimuth turntable in the two-dimensional turntable, and adjusts the pitch angle by using a pitch turntable in the two-dimensional turntable, so that the two-dimensional turntable tracks the communication satellite by adjusting the azimuth speed and the pitch angle.
However, the reflector antenna of the related art cannot realize communication satellite tracking in a tracking blind area.
Disclosure of Invention
In view of the above, it is necessary to provide a reflector antenna and a vehicle-mounted tracking device capable of tracking a communication satellite in a tracking blind area, in view of the above technical problems.
In a first aspect, the present application provides a reflector antenna comprising: the reflecting surface and the feed source moving device are connected to the rotary table component and can oppositely move by taking the rotary table component as a rotating shaft;
the feed source mobile device comprises a feed source mobile platform and a feed source system arranged on the feed source mobile platform, wherein the feed source system can move on the feed source mobile platform, and is positioned in a focal plane corresponding to the focal point of the reflecting surface when moving.
In one embodiment, the feed source mobile platform comprises a lead screw, a motor and a coupler, wherein the bottom of the feed source system is connected with the lead screw;
the motor is connected with the screw rod through the coupler, the screw rod is driven to rotate through the rotation of the motor, and the feed source system is driven to move on the feed source moving platform through the rotation of the screw rod.
In one embodiment, the feed source moving platform further comprises a nut seat and a switching support, the nut seat is connected with the switching support, and the bottom surface of the feed source system is arranged on the switching support;
the screw rotates to drive the nut seat to rotate on the screw, and the nut seat rotates to drive the feed source system to move on the feed source moving platform.
In one embodiment, the feed source moving platform further comprises linear guide rails, the linear guide rails are arranged on two side edges of the feed source moving platform, the linear guide rails are parallel to the screw rod, and the feed source system is connected with the feed source moving platform through the linear guide rails;
the screw rod rotates to drive the feed source system to move on the feed source moving platform along the linear guide rail.
In one embodiment, the feed mobile device further comprises a feed support frame; the feed source moving platform is connected with the rotary table component through the feed source supporting frame.
In one embodiment, the reflector antenna further comprises a reflector support connected between the reflector and the feed support.
In one embodiment, the feed system comprises a feed network and feed loudspeakers, wherein the feed loudspeakers are arranged on the feed network;
the feed source loudspeaker is used for receiving the electromagnetic wave signals reflected by the reflecting surface or radiating the electromagnetic wave signals to the reflecting surface;
the feed network is used for transmitting electromagnetic wave signals.
In one embodiment, the feed source system further comprises a double-frequency power amplifier, and the double-frequency power amplifier is arranged on the side face, close to the electromagnetic wave signal, of the feed source system;
the dual-frequency power amplifier is used for amplifying electromagnetic wave signals.
In one embodiment, the turntable assembly comprises an azimuth mechanism and a pitching mechanism, wherein the pitching mechanism is fixedly arranged on the azimuth mechanism;
the pitching mechanism is used for driving the reflecting surface and the feed source moving device to perform pitching motion;
the azimuth mechanism is used for driving the reflecting surface and the feed source moving device to perform azimuth motion.
In a second aspect, the present application further provides a vehicle-mounted tracking device, where the reflector antenna in the first aspect is disposed on the vehicle-mounted tracking device through a base, and the vehicle-mounted tracking device includes the reflector antenna in any embodiment of the first aspect.
Above-mentioned plane of reflection antenna includes plane of reflection, revolving stage subassembly and feed mobile device, and plane of reflection and feed mobile device all are connected to the revolving stage subassembly, and plane of reflection and feed mobile device can use the revolving stage subassembly to move in opposite directions as the pivot, and feed mobile device includes feed moving platform and installs the feed system on feed moving platform, and the feed system can move on feed moving platform, and is in the focal plane that the focus of plane of reflection corresponds during the feed system motion. Because the reflecting surface and the feed source mobile device cannot track the communication satellite in a tracking blind area in the process of relative movement by taking the rotary table component as a rotating shaft, the angle of a signal received by the reflecting surface is changed by the movement of the feed source system on the feed source mobile platform in the device, the communication satellite can be tracked in the tracking blind area, and the tracking range of the communication satellite is enlarged.
Drawings
FIG. 1 is a schematic diagram of an offset reflector antenna according to one embodiment;
FIG. 2 is a schematic diagram of a feed mobile device in one embodiment;
FIG. 3 is a schematic diagram of a feed mobile platform in one embodiment;
FIG. 4 is a schematic diagram of a feed mobile device in one embodiment;
FIG. 5 is a schematic diagram of a feed mobile device in one embodiment;
FIG. 6 is a schematic diagram of a feed mobile device in one embodiment;
FIG. 7 is a schematic diagram of an offset reflector antenna in one embodiment;
FIG. 8 is a schematic diagram of an offset reflector antenna in one embodiment;
FIG. 9 is a schematic diagram of the construction of a turntable assembly in one embodiment;
FIG. 10 is a schematic diagram of the configuration of an in-vehicle tracking device in one embodiment;
FIG. 11 is a schematic diagram of a ring focus antenna in one embodiment;
FIG. 12 is a schematic diagram of a ring focus antenna in one embodiment;
fig. 13 is a schematic structural diagram of a mobile feed device in one embodiment.
Description of the reference numerals:
1. an offset reflector antenna; 11. A reflective surface; 12. A turntable assembly;
121. an orientation mechanism; 122. A pitching mechanism; 13. A feed source moving device;
131. a feed source mobile platform; 1311. A lead screw; 1312. A motor;
1313. a coupling; 1314. A nut seat; 1315. A transfer bracket;
1316. a linear guide rail; 132. A feed source system; 1321. A feed source network;
1322. a feed source speaker; 1323. Performing double-frequency power amplification; 133. A feed source support frame;
14. a reflecting surface support frame.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more clearly understood, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
In one embodiment, the reflector antenna may include an offset reflector antenna, a ring-focus antenna, etc., and taking the offset reflector antenna as an example, as shown in fig. 1, fig. 1 shows an offset reflector antenna 1, where the offset reflector antenna 1 includes: reflecting surface 11, revolving stage subassembly 12 and feed mobile device 13, 11 reflecting surface and feed mobile device 13 all are connected to revolving stage subassembly 12, and reflecting surface 11 and feed mobile device 13 can use revolving stage subassembly 12 to move in opposite directions as the pivot. The schematic diagram of the internal structure of the feed source mobile device 13 is shown in fig. 2, the feed source mobile device 13 includes a feed source mobile platform 131 and a feed source system 132 installed on the feed source mobile platform, the feed source system 132 can move on the feed source mobile platform 131, and the feed source system moves 132 and is located in a focal plane corresponding to the focal point of the reflecting surface 11.
Wherein, the biasing plane of reflection antenna includes single biasing plane of reflection antenna and double offset plane of reflection antenna, the utility model discloses a carry out institutional advancement on the basis of single biasing plane of reflection antenna to make single biasing plane of reflection antenna can follow tracks of communication satellite at the tracking blind area. The single-bias reflector antenna selects a part of the symmetrical paraboloid to avoid the shielding of the feed source and the support rod thereof, eliminates the level rise of the side lobe caused by the shielding and improves the input voltage standing wave ratio of the feed source.
The reflecting surface is a conductive curved surface or plane which is used for intensively reflecting the electromagnetic waves emitted by the feed source to a certain direction according to a certain requirement in the planar antenna so as to enhance the emission effect. Optionally, the size of the reflecting surface is set according to actual needs.
The turntable component is a structure for driving the reflecting surface and the feed source moving device to perform azimuth motion and pitching motion. Alternatively, the turret assembly may be a cuboid, cube, cylinder or other irregular shape. The reflecting surface and the feed source moving device can be fixedly arranged on the upper surface of the rotary table component, the reflecting surface and the feed source moving device can also be fixedly arranged on two sides of the rotary table component, and the angle between the reflecting surface and the feed source moving device is within a preset range.
Optionally, the feed source system may be transversely arranged on the feed source mobile platform, or may be vertically arranged on the feed source mobile platform. Correspondingly, the feed source system can move transversely on the feed source mobile platform and can also move vertically on the feed source mobile platform.
The bias reflector antenna comprises a reflector, a rotary table component and a feed source moving device, wherein the reflector and the feed source moving device are connected to the rotary table component, the reflector and the feed source moving device can move in opposite directions by taking the rotary table component as a rotating shaft, the feed source moving device comprises a feed source moving platform and a feed source system installed on the feed source moving platform, the feed source system can move on the feed source moving platform, and the feed source system is located in a focal plane corresponding to a focal point of the reflector during movement. Because the reflecting surface and the feed source mobile device cannot track the communication satellite in a tracking blind area in the process of relative movement by taking the rotary table component as a rotating shaft, the angle of a signal received by the reflecting surface is changed by the movement of the feed source system on the feed source mobile platform in the device, the communication satellite can be tracked in the tracking blind area, and the tracking range of the communication satellite is enlarged.
In one embodiment, as shown in fig. 2, the feed source mobile platform 131 comprises a lead screw 1311, a motor 1312 and a coupling 1313, and the bottom of the feed source system 132 is connected to the lead screw 1311; the motor 1312 is connected with the lead screw 1311 through the coupling 1313, the lead screw 1311 is driven to rotate through the rotation of the motor 1312, and the feed source system 132 is driven to move on the feed source moving platform 131 through the rotation of the lead screw 1311.
The screw rod is used for converting the rotary motion of a motor in the feed source mobile platform into the linear motion of the feed source system. The coupling is a rotating member for connecting the motor and the lead screw, and is also used for preventing the lead screw from bearing overlarge load and playing a role in overload protection on the lead screw.
Optionally, the lead screw may be transversely disposed in the mobile platform of the feed source, or may be vertically disposed in the mobile platform of the feed source. The diameter of the lead screw can be designed according to the size of the mobile platform of the feed source. The motor can set up the arbitrary one end at the lead screw, is connected through the shaft coupling between motor and the lead screw. The motor may be a series excited dc motor, an electromagnetic dc motor, a shunt excited dc motor, or the like. The coupling may be a rigid coupling, a flexible coupling, a safety coupling, a non-mechanical coupling, or the like.
Optionally, a speed reducer may be disposed between the motor and the coupler for reducing the rotation speed of the motor to meet the rotation requirement of the lead screw. The speed reducer is a mechanism that uses a speed converter of a gear to reduce the number of revolutions of a motor to a desired number of revolutions and obtain a large torque. The speed reducer can be a cycloidal speed reducer, a stepless speed changer, a gear speed reducer, a worm and gear speed reducer and the like.
The feed source moving platform in the offset reflector antenna comprises a lead screw, a motor and a coupler, and the bottom of the feed source system is connected with the lead screw; the motor is connected with the lead screw through the coupler, the lead screw is driven to rotate through the rotation of the motor, and the feed source system is driven to move on the feed source moving platform through the rotation of the lead screw. The feed source system is driven to move on the feed source moving platform through the motion of the lead screw in the device, and the stability of the structure of the feed source system is ensured.
In one embodiment, as shown in fig. 3, the feed source moving platform 131 further includes a nut seat 1314 and an adapter support 1315, the nut seat 1314 is connected with the adapter support 1315, and the bottom surface of the feed source system 132 is disposed on the adapter support 1315; the screw 1311 rotates to drive the nut seat 1314 to rotate on the screw 1311, and the nut seat 1314 rotates to drive the feed system 132 to move on the feed moving platform 131.
Optionally, the size of the nut seat may be determined according to the diameter of the lead screw, the nut seat may be a self-locking nut, a locknut, or a four-jaw nut, and the nut seat may be made of carbon steel, stainless steel, or non-ferrous metal.
Optionally, the switching support can be connected with the bottom surface of the feed source system in a fixed connection manner, and the switching support can be arranged at the central position of the bottom surface of the feed source system, so that the feed source system can stably move along the arrangement direction of the lead screw under the rotation of the lead screw. When the lead screw is transversely arranged, the feed source system can transversely move; when the lead screw is arranged longitudinally, the feed source system can move longitudinally.
Fig. 3 is a transverse arrangement of the screw, the feed source system can transversely move in the feed source mobile platform, the initial position of the feed source system is in the central position of the feed source mobile platform, and the extreme position of the feed source system is in the edge position of the feed source mobile platform, which is attached to the screw. The feed source moving system can move transversely to the right and also can move transversely to the left.
The feed source moving platform in the offset reflector antenna further comprises a nut seat and a switching support, the nut seat is connected with the switching support, the bottom surface of the feed source system is arranged on the switching support, the nut seat is driven to rotate on a lead screw through the rotation of the lead screw, and the feed source system is driven to move on the feed source moving platform through the rotation of the nut seat. The device converts the rotary motion of the lead screw into the linear motion of the feed source system through the nut seat and the switching bracket, and improves the motion efficiency of the feed source system and the feed source moving platform.
In one embodiment, as shown in fig. 4, the feed source moving platform 131 further includes linear guide rails 1316, the linear guide rails 1316 are disposed at two side edges of the feed source moving platform 131, the linear guide rails 1316 are parallel to the lead screw 1311, and the feed source system 132 is connected to the feed source moving platform 131 through the linear guide rails 1316; the screw 1311 rotates to move the feed system 132 along the linear guide 1316 on the feed moving platform 131.
The linear guide rail is a groove or ridge made of metal or other materials and used for supporting and guiding the feed source system to do linear reciprocating motion in a direction parallel to the lead screw. The linear guide rail can be divided into a roller linear guide rail, a cylindrical linear guide rail or a ball linear guide rail. The linear guide rail can be connected with the upper surface of the feed source moving platform in a screw, rivet and other connection modes. The length of the two linear guide rails is consistent with that of the screw rod, or the length of the linear guide rails is slightly smaller than that of the screw rod.
The feed source moving platform in the offset reflector antenna also comprises linear guide rails, the linear guide rails are arranged on the edges of two sides of the feed source moving platform, the linear guide rails are parallel to the lead screw, and the feed source system is connected with the feed source moving platform through the linear guide rails; the screw rod rotates to drive the feed source system to move on the feed source moving platform along the linear guide rail. The feed source system in the device moves on the feed source moving platform along the linear guide rail, and the moving direction of the feed source system is limited through the linear guide rail, so that the feed source system can move in a fixed range.
In one embodiment, as shown in fig. 5, the feed mobile device 13 further comprises a feed support frame 133; the feed source mobile platform 131 is connected with the rotary table component 12 through the feed source supporting frame 133.
Optionally, the feed source support frame may be a linear support frame, or a support frame with a certain angle, which may be composed of two linear support frames, and the angle between the two linear support frames may be adjusted. Feed support frame quantity can be one or more, and the plane of reflection support frame can be single pole setting support frame, two pole setting support frames or lattice column crowd support frame etc.. One end of the feed source supporting frame can be connected with the rotary table assembly in a detachable mode, and the other end of the feed source supporting frame can be connected with the feed source mobile device in a fixed connection mode. Wherein, the detachable mode can be threaded connection, plug-in connection and the like.
Optionally, when the feed source support frame is a support frame with a certain angle and composed of two sections of linear support frames, the bottom of the reflecting surface can be arranged above the feed source support frame, that is, the feed source moving device, the feed source support frame and the reflecting surface can be regarded as a whole, and the whole is arranged above the turntable assembly.
The feed source moving device in the offset reflector antenna further comprises a feed source supporting frame, and the feed source moving platform is connected with the rotary table assembly through the feed source supporting frame. The device supports the position that the feed system is in the focus of plane of reflection and corresponds through the feed support frame, the electromagnetic wave signal of the reflection of plane of reception reflection that can be better.
In one embodiment, as shown in fig. 6, the offset reflector antenna 1 further comprises a reflector support 14, and the reflector support 14 is connected between the reflector 11 and the feed support 133.
Optionally, the number of the reflecting surface supporting frames may be one or more, and the reflecting surface supporting frames may be single vertical rod supporting frames, double vertical rod supporting frames or lattice column group supporting frames. One section of plane of reflection support frame is installed in the marginal position of plane of reflection latter half, and the optional position at the feed support frame is installed to the other end of plane of reflection support frame.
The length of the reflecting surface support frames can be determined according to the angle between the reflecting surface and the feed source system, the two reflecting surface support frames are respectively installed on two sides of the reflecting surface, positions of the two sides are located below the focus of the reflecting surface, and the reflecting surface support frames are prevented from influencing the receiving of electromagnetic wave signals by the reflecting surface.
The offset reflector antenna 1 of the above offset reflector antenna further includes a reflector support frame 14, and the reflector support frame 14 is connected between the reflector 11 and the feed support frame 133. The reflecting surface support frame in the device is used for supporting the angle between the reflecting surface and the feed source mobile device to be in a certain range, so that the reflecting surface is not influenced by the feed source mobile device, and the electromagnetic wave signals of the satellite can be better received.
In one embodiment, as shown in fig. 7, the feed system 132 includes a feed network 1321 and feed speakers 1322, the feed speakers 1322 being disposed on the feed network 1321; the feed speaker 1322 is configured to receive an electromagnetic wave signal reflected by the reflection surface 11, or radiate an electromagnetic wave signal to the reflection surface 11; feed network 1322 is used for transmitting electromagnetic wave signals.
Optionally, the feed source loudspeaker is horn-shaped in general, and the feed source loudspeaker can be an H-plane fan-shaped loudspeaker, a pyramid loudspeaker, a cone loudspeaker and the like. The position of the feed source loudspeaker and the position of the focal point of the reflecting surface are positioned on the same plane, so that electromagnetic wave signals reflected by the reflecting surface can be more accurately acquired. The feed source network is used for transmitting electromagnetic wave signals acquired by the feed source loudspeaker.
Optionally, the feed system may further include a feed bin and a feed base plate, the feed bin is disposed at one end of the feed base plate, the other end of the feed base plate is provided with a dual-frequency power amplifier, one part of the feed network is disposed inside the feed bin, and the other part protrudes from an upper surface of the feed bin. The feed horn may be disposed at a central location on an upper surface of the feed network.
The feed source system in the offset reflector antenna comprises a feed source network and a feed source loudspeaker, wherein the feed source loudspeaker is arranged on the feed source network; the feed source loudspeaker is used for receiving the electromagnetic wave signals reflected by the reflecting surface or radiating the electromagnetic wave signals to the reflecting surface; the feed network is used for transmitting electromagnetic wave signals. The feed source loudspeaker and the feed source network in the device are used for processing the electromagnetic wave signals, so that the obtained electromagnetic wave signals are more accurate.
In one embodiment, as shown in fig. 8, the feed system 132 further includes a dual-frequency power amplifier 1323, and the dual-frequency power amplifier 1323 is disposed on a side surface of the feed system 132 close to the electromagnetic wave signal; the dual-band power amplifier 1323 is used to amplify the electromagnetic wave signal.
Optionally, the dual-frequency power amplifier may be disposed on a side surface of the feed source system near the electromagnetic wave signal. The fixed connection mode can be bolt connection, riveting and the like. Optionally, the dual-frequency power amplifier can be close to the side face for transmitting the electromagnetic wave signal through the suspended connection mode feed source system, a support frame is arranged on the bottom face of the feed source system, and the dual-frequency power amplifier is supported by the support frame to be suspended on the side face, close to the side face for transmitting the electromagnetic wave signal, of the feed source system.
The feed source system in the offset reflector antenna further comprises a double-frequency power amplifier, the double-frequency power amplifier is arranged on the side face, close to the side face for transmitting the electromagnetic wave signals, of the feed source system, and the double-frequency power amplifier is used for amplifying the electromagnetic wave signals. The dual-frequency power amplifier in the device is used for amplifying electromagnetic wave signals, so that the output electromagnetic wave signals are more accurate.
In one embodiment, as shown in fig. 9, the turntable assembly 12 includes an azimuth mechanism 121 and a pitch mechanism 122, the pitch mechanism 122 being fixedly disposed on the azimuth mechanism 121; the pitching mechanism 122 is used for driving the reflecting surface 11 and the feed source moving device 13 to perform pitching motion; the azimuth mechanism 121 is used for driving the reflecting surface 11 and the feed source moving device 13 to perform azimuth motion.
Because the reflecting surface and the feed source moving device can simultaneously perform pitching motion and azimuth motion, when the pitching mechanism is arranged below the azimuth mechanism, the range of azimuth rotation can be greatly limited, and therefore, the pitching mechanism needs to be fixedly arranged on the azimuth mechanism.
Alternatively, the pitch mechanism may be fixed to the azimuth mechanism by screws, or the pitch mechanism may be fixed to the azimuth mechanism by rivets, or the pitch mechanism may be welded directly to the azimuth mechanism. The embodiment is not limited to how the pitch mechanism is fixedly arranged on the azimuth mechanism.
Optionally, the orientation mechanism may be a rotating disk, the rotating disk rotates around a center point of the rotating disk, and the rotating disk rotates to drive the reflecting surface and the feed source moving device to move in opposite directions around the rotating disk assembly. The pitching mechanism can be a mechanism consisting of two rotating tables and a transverse shaft, the two pitching rotating tables are respectively arranged at two sides of the rotating table type azimuth mechanism, and the two pitching rotating tables and the central point of the rotating table form the diameter of the rotating table. The pitching mechanism takes the diameter of a turntable formed by two pitching rotary tables and the central point of the turntable as a rotating shaft, and the reflecting surface and the feed source moving device are driven to move oppositely by the rotation of the two pitching rotary tables by taking the turntable assembly as the rotating shaft.
Further, it is understood that the turntable assembly may also include an azimuth motor and a tilt motor, which may be disposed below or to the side of the azimuth mechanism. The azimuth motor can be connected with the azimuth mechanism through a coupler, the pitching motor can be connected with the pitching mechanism through a coupler, the azimuth motor is used for driving the reflecting surface and the feed source mobile device to perform azimuth motion, and the pitching motor is used for driving the reflecting surface and the feed source mobile device to perform pitching motion.
The turntable assembly in the offset reflector antenna comprises an azimuth mechanism and a pitching mechanism, wherein the pitching mechanism is fixedly arranged on the azimuth mechanism; the pitching mechanism is used for driving the reflecting surface and the feed source moving device to perform pitching motion; the azimuth mechanism is used for driving the reflecting surface and the feed source moving device to perform azimuth motion. The azimuth mechanism and the pitching mechanism in the device ensure that the deflection reflector antenna can rotate in a certain range, and the communication satellite can be flexibly tracked.
In one embodiment, as shown in fig. 10, there is provided a vehicle-mounted tracking device, on which an offset reflector antenna is disposed through a base, the vehicle-mounted tracking device comprising the offset reflector antenna in any one of the embodiments of the first aspect.
Optionally, the offset reflector antenna can be arranged at any position of the top of the vehicle-mounted tracking device, the offset reflector antenna can be fixedly arranged on the vehicle-mounted tracking device through a detachable mode through the base, on one hand, the offset reflector antenna is prevented from falling off in the process that the vehicle moves, on the other hand, when the vehicle breaks down, another vehicle can be rapidly replaced through the detachable mode, and a new vehicle-mounted tracking device is formed.
According to the vehicle-mounted tracking equipment, the base of the bias reflector antenna can be arranged on the vehicle-mounted tracking equipment in a fixed connection mode, the vehicle-mounted tracking equipment can track the communication satellite in the moving process, meanwhile, the communication satellite in a tracking blind area can be tracked through the movement of the feed source, and the flexibility of tracking the communication satellite is improved.
Furthermore, it can be understood that the feed source moving device in the offset reflector antenna can also be used in a large-aperture ring focal antenna, and under the condition that the azimuth rotating speed of the ring focal antenna cannot meet the requirement, the angle of a received signal is changed by the movement of the feed source system on a feed source moving platform, the communication satellite is tracked in a tracking blind area, and the tracking range of the communication satellite is expanded.
In one embodiment, fig. 11 shows a schematic structural diagram of a ring focal antenna, and the large-aperture ring focal antenna 2 comprises a reflecting surface 21, a turntable assembly 22 and a feed moving device 23.
Fig. 12 is a schematic structural diagram of a ring-focus antenna, in fig. 12, the reflection surface 21 includes a main reflection surface 211 and an auxiliary reflection surface 212, the main reflection surface 211 includes a left panel 2111, a right panel 2112 and a central panel 2113, for the convenience of transportation, the main reflection surface 211 may be a retracted and expanded structure, and is composed of a left, a middle and a right three-lobe panels, the middle panel is connected with the central body through a back rib, and the left and right panels realize the switching between the expanded and transported states through a turnover mechanism. The left panel and the right panel are connected with the center panel in a positioning way; when in a transportation state, the left panel and the right panel are locked with the central panel by the locking screws. The reflective surface 21 may be composed of a carbon fiber material.
The turntable assembly 21 comprises an azimuth mechanism 221 and a pitching mechanism 222, the internal structure of the turntable assembly 21 is consistent with that of the turntable assembly in the offset reflector antenna shown in fig. 9, the pitching mechanism is fixedly arranged on the azimuth mechanism, and the pitching mechanism is used for driving the reflector and the feed source moving device to perform pitching motion; the azimuth mechanism is used for driving the reflecting surface and the feed source moving device to perform azimuth motion. The azimuth mechanism 221 is made of aviation aluminum and is machined by a numerical control machining center, and the azimuth mechanism and an azimuth shaft are connected by using a crossed roller bearing; the azimuth motor is a servo direct current motor, and the azimuth shaft is driven to rotate within +/-185 degrees through two-stage gear and worm transmission. The pitching axis is arranged above the azimuth axis, is vertical to the azimuth axis, is driven by a servo direct current motor, and can rotate at 0-90 degrees.
Fig. 13 is a schematic structural diagram of a feed source moving device in a ring focus antenna, where the feed source moving device 23 includes a feed source system 231 and a feed source moving platform 232, where the feed source moving platform 232 includes a lead screw, a motor, a coupler, a nut seat, a switching bracket and a linear guide rail, and the connection modes of the feed source moving device 23 in the large-aperture ring focus antenna 2 and the components of the feed source moving device in the offset reflector antenna 1 are consistent. For example, the feed source system moves on the feed source mobile platform, and the bottom of the feed source system is connected with a lead screw; the nut seat is connected with the switching bracket; the bottom surface of the feed source system is arranged on the switching bracket; the linear guide rails are arranged on the edges of the two sides of the feed source moving platform, the linear guide rails are parallel to the lead screw, and the feed source system is connected with the feed source moving platform through the linear guide rails. The motor is connected with the lead screw through the coupler, the lead screw is driven to rotate through the rotation of the motor, and the feed source system is driven to move on the feed source moving platform through the rotation of the lead screw; the screw rotates to drive the nut seat to rotate on the screw, and the nut seat rotates to drive the feed source system to move on the feed source moving platform; the screw rod rotates to drive the feed source system to move on the feed source moving platform along the linear guide rail.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above examples only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present application. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, and these are all within the scope of protection of the present application. Therefore, the protection scope of the present application shall be subject to the appended claims.
Claims (10)
1. A reflector antenna, comprising: the feed source moving device and the reflecting surface are connected to the rotary table component and can oppositely move by taking the rotary table component as a rotating shaft;
the feed source moving device comprises a feed source moving platform and a feed source system installed on the feed source moving platform, wherein the feed source system can move on the feed source moving platform, and the feed source system is located in a focal plane corresponding to the focal point of the reflecting surface when moving.
2. The reflector antenna of claim 1, wherein the feed source moving platform comprises a lead screw, a motor and a coupler, and the bottom of the feed source system is connected with the lead screw;
the motor is connected with the lead screw through the coupler, the lead screw is driven to rotate through the rotation of the motor, and the feed source system is driven to move on the feed source mobile platform through the rotation of the lead screw.
3. The reflector antenna of claim 2, wherein the feed moving platform further comprises a nut seat and an adapter bracket, the nut seat is connected with the adapter bracket, and the bottom surface of the feed system is arranged on the adapter bracket;
the screw rotates to drive the nut seat to rotate on the screw, and the nut seat rotates to drive the feed source system to move on the feed source moving platform.
4. The reflector antenna of claim 2, wherein the feed mobile platform further comprises linear guide rails, the linear guide rails are arranged on two side edges of the feed mobile platform, the linear guide rails are parallel to the lead screw, and the feed system and the feed mobile platform are connected through the linear guide rails;
the feed source system is driven to move on the feed source moving platform along the linear guide rail by the rotation of the lead screw.
5. The reflector antenna of claim 1, wherein the feed mobile device further comprises a feed support; the feed source moving platform is connected with the rotary table assembly through the feed source supporting frame.
6. The reflector antenna of claim 5, further comprising a reflector support frame coupled between the reflector and the feed support frame.
7. The reflector antenna of claim 1, wherein the feed system comprises a feed network and a feed speaker, the feed speaker disposed on the feed network;
the feed source loudspeaker is used for receiving the electromagnetic wave signals reflected by the reflecting surface or radiating the electromagnetic wave signals to the reflecting surface;
the feed source network is used for transmitting electromagnetic wave signals.
8. The reflector antenna of claim 1, wherein the feed system further comprises a dual-frequency power amplifier disposed on a side of the feed system near the side transmitting the electromagnetic wave signal;
the dual-frequency power amplifier is used for amplifying electromagnetic wave signals.
9. The reflector antenna of claim 1, wherein the turntable assembly includes an azimuth mechanism and a tilt mechanism, the tilt mechanism being fixedly disposed on the azimuth mechanism;
the pitching mechanism is used for driving the reflecting surface and the feed source moving device to perform pitching motion;
the azimuth mechanism is used for driving the reflecting surface and the feed source moving device to perform azimuth motion.
10. An on-board tracking device, characterized in that the on-board tracking device comprises a reflector antenna according to any one of claims 1-9, which is arranged on the on-board tracking device by means of a mount.
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| CN202222075548.5U CN218334343U (en) | 2022-08-05 | 2022-08-05 | Reflector antenna and vehicle-mounted tracking device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116192232A (en) * | 2023-02-17 | 2023-05-30 | 陕西兴际通通信有限公司 | Ka, ku automatic portable station conversion feed source communication system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116192232A (en) * | 2023-02-17 | 2023-05-30 | 陕西兴际通通信有限公司 | Ka, ku automatic portable station conversion feed source communication system |
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