VICTS satellite communication antenna

Abstract

The application relates to the technical field of satellite communication, in particular to a VICTS satellite communication antenna, which comprises a position rotation structure, an antenna feed panel and an antenna radiation panel arranged in sequence; a telescopic structure is arranged between the antenna feed panel and the antenna radiation panel; the telescopic structure is telescopically adjusted according to a direction positioning instruction to adjust the relative rotation angle between the antenna feed panel and the antenna radiation panel, so that the direction of an antenna output beam is a primary adjustment rotation direction; the position rotation structure drives the antenna feed panel and the antenna radiation panel to jointly rotate according to the direction positioning instruction to adjust the direction of the antenna output beam from the primary adjustment rotation direction to a target output direction; the antenna feed panel converts a high-frequency electromagnetic signal fed in to a linear feed source signal, and radiates the linear feed source signal to an external space through the antenna radiation panel according to the target output direction. The relative rotation angle and the joint rotation angle of the feed panel and the radiation panel are separately controlled, so that the beam control mode of the antenna is simplified.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of satellite communication, and particularly relates to a VICTS satellite communication antenna. BACKGROUND

[0002] Satellite communication antennas usually have the ability of beam adjustment, adjusting the beam in the azimuth plane and the elevation plane, for aligning high-orbit or low-orbit satellites to realize communication connection. Common forms of satellite communication antennas include parabolic antennas, plate-shaped antennas, phased array antennas and variable inclination continuous transverse slot (VICTS) antennas. Among them, the parabolic antennas and the plate-shaped antennas usually do not have the beam scanning ability by themselves, and rely on the azimuth plane and the elevation plane servo motor structure outside the antenna to realize the beam adjustment, causing the antenna profile height to be high and the wind resistance to be large, which is not conducive to carrier installation. The phased array antenna usually uses a large number of antenna units to form an array, and the overall integrated design is complex, the cost of various chips and devices is high, and the power consumption is large.

[0003] The VICTS antenna is a mechanical beam scanning antenna, each layer of disc body in the antenna is driven by a separate motor, and the relative rotation or common rotation between the layers of disc bodies in the antenna is realized by the mutual cooperation between the motors. Each motor cannot independently control the relative rotation or common rotation angle, which makes the beam control algorithm of the VICTS antenna very complex.

[0004] The above content is only used to assist in understanding the technical solutions of the present application, and does not represent the acknowledgement of the above content as prior art. SUMMARY

[0005] The main purpose of the present application is to provide a VICTS satellite communication antenna, which aims to solve the technical problem of complex beam control algorithm of the VICTS antenna in the prior art.

[0006] To achieve the above purpose, the present application provides a VICTS satellite communication antenna, which comprises: an azimuth rotation structure, an antenna feed disc and an antenna radiation disc which are sequentially arranged from bottom to top.

[0007] A telescopic structure is arranged between the antenna feed disc and the antenna radiation disc.

[0008] The telescopic structure is used for receiving an input direction positioning instruction, and performing telescoping according to the direction positioning instruction to adjust the relative rotation angle between the antenna feed disc and the antenna radiation disc, so that the direction of the antenna output beam is the initial adjustment rotation direction.

[0009] The azimuth rotation structure is configured to receive the direction positioning instruction, and drive the antenna feed plate and the antenna radiation plate to rotate together according to the direction positioning instruction, so as to adjust the direction of the antenna output beam from the initial rotation direction to a target output direction.

[0010] The antenna feed plate is configured to convert the high-frequency electromagnetic signal fed in to a linear feed source signal, and radiate the linear feed source signal to the external space through the antenna radiation plate according to the target output direction.

[0011] Optionally, the antenna feed plate comprises a linear source conversion structure and a feed plate main body structure.

[0012] The linear source conversion structure is arranged on one side close to the azimuth rotation structure, and the feed plate main body structure is arranged on one side close to the antenna radiation plate.

[0013] The linear source conversion structure is configured to convert the high-frequency electromagnetic signal fed in through the waveguide port into a linear feed source signal, and transmit the linear feed source signal to the feed plate main body structure.

[0014] The feed plate main body structure is configured to receive the linear feed source signal into an internal cavity, and radiate the linear feed source signal in the internal cavity to the external space through the antenna radiation plate.

[0015] Optionally, a circular through hole is arranged in the middle part of the azimuth rotation structure, and the linear source conversion structure further comprises a waveguide rotation joint.

[0016] The waveguide rotation joint accesses the waveguide port of the linear source conversion structure through the circular through hole, and feeds the high-frequency electromagnetic signal into the linear source conversion structure.

[0017] Optionally, the antenna radiation plate comprises a first slot structure, a second slot structure and a third slot structure arranged in sequence from bottom to top.

[0018] The width of the slot in the first slot structure is narrower than the width of the slot in the second slot structure.

[0019] The number of slots in the third slot structure is twice the number of slots in the first slot structure.

[0020] Optionally, the VICTS satellite communication antenna further comprises a first ball layer.

[0021] The first ball layer is arranged between the antenna feed plate and the antenna radiation plate.

[0022] Optionally, the telescopic structure is a first arc-shaped electrically-controlled telescopic rod; the telescopic structure further comprises a first pin structure and a second pin structure arranged at two ends of the first arc-shaped electrically-controlled telescopic rod.

[0023] The first arc-shaped electrically-controlled telescopic rod is connected with the antenna feed plate through the first pin structure, and connected with the antenna radiation plate through the second pin structure.

[0024] Optionally, the VICTS satellite communication antenna further comprises a polarization matching plate and a polarization adjusting structure.

[0025] The polarization matching plate is arranged on a side of the antenna radiation plate away from the antenna feed plate.

[0026] The polarization adjusting structure is arranged between the antenna radiation plate and the polarization matching plate.

[0027] The polarization adjusting structure is configured to receive an input polarization positioning instruction and adjust a polarization direction between the antenna radiation plate and a communication satellite according to the polarization positioning instruction.

[0028] Optionally, the polarization adjusting structure is a second arc-shaped electrically-controlled telescopic rod; the polarization adjusting structure further comprises a third pin structure and a fourth pin structure arranged at two ends of the second arc-shaped electrically-controlled telescopic rod.

[0029] The second arc-shaped electrically-controlled telescopic rod is connected with the antenna radiation plate through the third pin structure, and connected with the polarization matching plate through the fourth pin structure.

[0030] Optionally, the VICTS satellite communication antenna further comprises a second ball layer.

[0031] The second ball layer is arranged between the antenna radiation plate and the polarization matching plate.

[0032] In addition, in order to achieve the above-mentioned purpose, the application further provides a satellite communication system, which comprises the VICTS satellite communication antenna as described above.

[0033] The application provides a VICTS satellite communication antenna, which comprises a horizontal rotation structure, an antenna feed panel and an antenna radiation panel arranged in sequence from bottom to top, and a telescopic structure arranged between the antenna feed panel and the antenna radiation panel; the telescopic structure is used for receiving an input direction positioning instruction, and telescoping according to the direction positioning instruction to adjust the relative rotation angle between the antenna feed panel and the antenna radiation panel, so that the direction of an antenna output beam is an initial adjustment rotation direction; the horizontal rotation structure is used for receiving the direction positioning instruction, and driving the antenna feed panel and the antenna radiation panel to rotate together according to the direction positioning instruction to adjust the direction of the antenna output beam from the initial adjustment rotation direction to a target output direction; the antenna feed panel is used for converting a high-frequency electromagnetic signal fed in to a linear feed source signal, and radiating the linear feed source signal to an external space through the antenna radiation panel according to the target output direction. The telescopic driving structure can control the relative rotation angle change of the feed panel and the radiation panel, and the beam of the antenna can be scanned in a large angle in the elevation plane; and the horizontal rotation structure can control the whole antenna feed panel and the antenna radiation panel to rotate together in 360 degrees in the horizontal plane, so as to adjust the horizontal angle of the antenna beam. The relative rotation angle and the common rotation angle of the antenna feed panel and the antenna radiation panel are controlled separately, the beam control mode of the antenna is greatly simplified, and the beam control precision and the stability of the beam pointing are improved. BRIEF DESCRIPTION OF DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only show some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained according to the structures shown in the drawings without any creative effort.

[0035] Figure 1 It is a structural schematic diagram of the first embodiment of the VICTS satellite communication antenna of the present application.

[0036] Figure 2 It is a curve schematic diagram of the corresponding relationship between the elevation angle and the horizontal angle of the beam pointing in different rotation angles in the first embodiment of the VICTS satellite communication antenna of the present application.

[0037] Figure 3 It is a structural schematic diagram of a beam adjustment state in the first embodiment of the VICTS satellite communication antenna of the present application.

[0038] Figure 4 It is an exploded structural schematic diagram of the second embodiment of the VICTS satellite communication antenna of the present application.

[0039] Figure 5 Fig. 2 is a structural profile schematic view of a second embodiment of the VICTS satellite communication antenna of the present application;

[0040] Figure 6 Fig. 3 is a structural schematic view of a third embodiment of the VICTS satellite communication antenna of the present application.

[0041] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0042] It should be understood that the specific embodiments described herein merely exemplify the application and do not limit the application.

[0043] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0044] It should be noted that all the directionality indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative position relationship, movement condition, etc. between the components in a certain specific posture (as shown in the drawings). If the specific posture changes, the directionality indications also change accordingly.

[0045] In addition, the description of "first", "second" and the like in the present application is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the technical features or implicitly indicating the number of the technical features. Therefore, the features with "first", "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of the ordinary skilled in the art. When the combination of technical solutions contradicts each other or cannot be realized, it should be considered that the combination of technical solutions does not exist, and is not within the scope of protection required by the present application.

[0046] The main solution of the embodiment of the present application is: the VICTS satellite communication antenna comprises: an azimuth rotating structure 1, an antenna feed panel 2 and an antenna radiation panel 3 arranged in sequence from bottom to top; a telescopic structure 4 is arranged between the antenna feed panel 2 and the antenna radiation panel 3. The telescopic structure 4 can be used to receive an input direction positioning instruction, and is telescoped according to the direction positioning instruction to adjust the relative rotation angle between the antenna feed panel 2 and the antenna radiation panel 3, so that the direction of the antenna output beam is an initial adjustment rotation direction; the azimuth rotating structure 1 is used to receive the direction positioning instruction, and drives the antenna feed panel 2 and the antenna radiation panel 3 to rotate together according to the direction positioning instruction to adjust the direction of the antenna output beam from the initial adjustment rotation direction to a target output direction; the antenna feed panel 2 is used to convert the input high-frequency electromagnetic signal into a linear feed source signal, and radiate the linear feed source signal to the external space through the antenna radiation panel 3 according to the target output direction.

[0047] Satellite communication antennas usually have the ability to adjust the beam, adjust the beam in the azimuth plane and the elevation plane, and are used to align high-orbit or low-orbit satellites to achieve communication connection. Common forms of satellite communication antennas include parabolic antennas, plate-shaped antennas, phased array antennas, and VICTS antennas. Among them, parabolic antennas and plate-shaped antennas usually do not have beam scanning capability by themselves, rely on the azimuth plane and the elevation plane servo motor structure outside the antenna to realize beam adjustment, resulting in high antenna profile height, large wind resistance, and being not conducive to carrier installation. Phased array antennas usually use a large number of antenna elements to form an array, and adjust the amplitude and phase information of the antenna elements through electronic phase shifter chips, so as to realize the beam scanning of the antenna array without rotating the antenna surface. The phased array antenna has low profile and fast beam scanning speed, but the overall integrated design is complex, the cost of various chips and devices is high, and the power consumption is large. The VICTS antenna is a mechanical beam scanning antenna, which is usually composed of a feed plate, a radiation plate, a polarization plate and the like stacked together. The adjustment of the beam in the azimuth plane and the elevation plane relies on the rotation of each layer of the plate in the horizontal plane, and does not need to rotate the antenna disc body in the elevation plane, so that the overall low profile design can be realized. In the rotation of each layer of the VICTS antenna disc body, the relative rotation angle of the feed plate and the radiation plate is crucial to changing the beam elevation angle. The relationship between the relative rotation angle of the feed plate and the radiation plate and the beam azimuth angle and the elevation angle is nonlinear. If at a certain moment, the beam needs to be pointed to a specific elevation angle A and azimuth angle B, the corresponding relative rotation angle C of the elevation angle A needs to be found according to the corresponding relationship between the relative rotation angle of the feed plate and the radiation plate, the elevation angle and the azimuth angle, and then the feed plate and the radiation plate are controlled to reach this relative rotation angle C. At this time, the corresponding azimuth angle of the beam is B', which is not equal to the required azimuth angle B in most cases. At this time, the feed plate and the radiation plate are rotated together (the common rotation only changes the azimuth angle and does not affect the beam elevation angle A), so that the beam is from the azimuth angle B' to the azimuth angle B, thereby completing the beam pointing adjustment. Each layer of the disc body of the antenna is driven by a separate motor, and the relative rotation or common rotation between the disc bodies of the antenna relies on the mutual cooperation between the motors to be realized, and each motor cannot independently control the relative rotation or common rotation angle, which makes the beam control algorithm of the VICTS antenna very complex. In order to achieve high-precision pointing of the antenna beam, the tolerance of the corresponding servo structure of each disc and the synchronization of the motors are required to be high.

[0048] Reference Figure 1 , Figure 1 is a structural schematic diagram of the first embodiment of the VICTS satellite communication antenna of the application, like Figure 1As shown, in the present embodiment, the telescopic structure can control the relative rotation angle between the feed plate and the radiation plate by elongation and shortening, and adjust the angle of the antenna beam in the elevation plane according to the received directional positioning instruction, wherein the directional positioning instruction can be a control instruction for driving the antenna to point to the satellite according to the ephemeris data of the satellite and the GPS coordinates of the ground. For a VICTS antenna, the corresponding relationship curve between the angle of the feed plate rotation and the pointing direction of the beam formed by the space thereof can be obtained through modeling simulation or actual measurement. Referring to Figure 2 , Figure 2 FIG. 1 is a schematic diagram of the corresponding relationship curve between the elevation angle and the azimuth angle of the beam pointing of the VICTS satellite communication antenna in the first embodiment of the present application at different rotation angles. Wherein (θ, φ), (θ cal ,φ cal ) and (θ closeed ,φ closeded ) respectively represent the elevation angle (the angle deviating from the normal line of the array plane) and the azimuth angle of the beam pointing obtained by using full-wave simulation, theoretical model in dynamic coordinate system and theoretical model in fixed reference coordinate system.

[0049] Due to the change of the relative rotation angle, the azimuth angle of the antenna will also change while the elevation angle changes. After the telescopic adjustment of the telescopic structure, the direction of the antenna output beam is the initial adjustment rotation direction, and the azimuth angle is not the required azimuth angle. Therefore, the azimuth rotation structure is controlled to rotate the antenna as a whole, and the azimuth angle of the beam is adjusted to the target angle, so that the direction of the antenna output beam is changed from the initial adjustment rotation direction to the target output direction, thereby completing the adjustment of the beam pointing. Wherein the initial adjustment rotation direction can be the pointing direction of the antenna after the first adjustment of the telescopic structure to determine the elevation angle and the relative rotation angle according to the directional positioning instruction. The target output direction can be the pointing direction of the antenna after the second adjustment of the azimuth rotation structure to determine the azimuth angle corresponding to the relative rotation angle according to the directional positioning instruction. For example: if the satellite is at the position of 40 degrees in the elevation angle and 50 degrees in the azimuth angle of the antenna at this time, the antenna needs to adjust the beam pointing to the satellite. First, according to the corresponding relationship curve, the relative rotation angle between the feed plate and the radiation plate corresponding to the elevation angle of 40 degrees is 30 degrees, so the telescopic structure is adjusted to meet the relative rotation angle. After rotation, it can be known from the corresponding relationship curve that the azimuth angle of the antenna is 80 degrees, which does not meet the target azimuth angle required by the satellite. Therefore, the feed plate and the radiation plate are rotated simultaneously through the azimuth rotation structure, so as to adjust the azimuth angle from 80 degrees to 50 degrees (since the feed plate and the radiation plate rotate together, the elevation angle does not change at this time), and the whole beam adjustment process is completed, so as to achieve the purpose of beam pointing to satellite communication. Referring to Figure 3 , Figure 3 FIG. 2 is a structural schematic diagram of a kind of beam adjustment state in the first embodiment of the VICTS satellite communication antenna of the present application.

[0050] It should be understood that the beam formed in space is formed by the interference of electromagnetic waves radiated by multiple antennas in space, and the direction of radiation of a single antenna does not change. That is, by changing the phase distribution state of the signal transmitted to each antenna, the direction of the beam formed by the antenna array in space can be changed.

[0051] It should be noted that the telescopic structure can accurately control the telescopic distance (angle) according to instructions, and can use a linear electric telescopic rod or an arc electric telescopic rod. In actual application, the arc electric telescopic rod may be customized and developed, but it is more suitable for the shape of the VICTS layers. The linear electric telescopic rod is widely used in various electric telescopic control scenes, and is relatively easy to obtain but increases the overall horizontal structure area. The telescopic structure can also be provided as a motor controlling two upper and lower pull rods. The motor is connected to the upper and lower pull rods through a gear, and the two ends of the two pull rods are connected to the antenna feed plate and the radiation plate, respectively. When the motor rotates clockwise, the two pull rods are elongated to the two ends, and the relative rotation angle of the feed plate and the radiation plate increases. When the motor rotates counterclockwise, the two pull rods are shortened to the two ends, and the relative rotation angle of the feed plate and the radiation plate decreases. By controlling the forward and reverse rotation of the motor, the purpose of controlling the antenna beam can also be achieved. In this scheme, the arc electric telescopic rod is used to illustrate the distance, and there are many specific schemes for realizing the performance of the telescopic structure, which are not limited in detail.

[0052] In this embodiment, the VICTS satellite communication antenna comprises: a azimuth rotation structure, an antenna feed plate and an antenna radiation plate arranged in sequence from bottom to top; a telescopic structure is arranged between the antenna feed plate and the antenna radiation plate; the telescopic structure is used for receiving an input direction positioning instruction, and performing telescoping according to the direction positioning instruction to adjust the relative rotation angle between the antenna feed plate and the antenna radiation plate, so that the direction of the antenna output beam is the initial adjustment rotation direction; the azimuth rotation structure is used for receiving the direction positioning instruction, and driving the antenna feed plate and the antenna radiation plate to rotate together according to the direction positioning instruction to adjust the direction of the antenna output beam from the initial adjustment rotation direction to a target output direction; the antenna feed plate is used for converting a high-frequency electromagnetic signal fed in to a linear feed source signal, and radiating the linear feed source signal to an external space through the antenna radiation plate according to the target output direction. The telescopic driving structure can control the relative rotation angle change of the feed plate and the radiation plate, and the beam of the antenna can be scanned in the elevation plane by a large angle. The azimuth rotation structure can control the whole antenna feed plate and the antenna radiation plate to rotate together in the azimuth plane within 360 degrees, so as to adjust the azimuth angle of the antenna beam. The relative rotation angle and the common rotation angle of the antenna feed plate and the antenna radiation plate are controlled separately, which greatly simplifies the beam control mode of the antenna, improves the beam control precision and the stability of the beam pointing.

[0053] Referring to Figure 4 , Figure 4 Figure 2 is an exploded schematic view of a second embodiment of the VICTS satellite communication antenna of the present application, as shown in Figure 2, in this embodiment, the same or similar content as the above-mentioned first embodiment, can be referred to the above description, the following will not be described again. The VICTS satellite communication antenna comprises: line source conversion structure 21 and feed panel main structure 22; the line source conversion structure 21 is arranged on the side close to the azimuth rotation structure 1, and the feed panel main structure 22 is arranged on the side close to the antenna radiation panel 3. Figure 4 It should be noted that the line source conversion structure 21 can be used to convert the high-frequency electromagnetic signal fed into the waveguide port into a linear feed source signal, and transmit the linear feed source signal to the feed panel main structure 22; the feed panel main structure 22 can be used to receive the linear feed source signal into the internal cavity, and radiate the linear feed source signal in the internal cavity to the external space through the antenna radiation panel 3.

[0054] Further, a first ball layer 23 is arranged between the antenna feed panel 2 and the antenna radiation panel 3, and the first ball layer 23 contains a plurality of circular balls, which facilitates the relative rotation between the antenna feed panel 2 and the antenna radiation panel 3.

[0055] In a possible implementation, the telescopic structure 4 is an arc-shaped electric control telescopic rod; the telescopic structure 4 further comprises: a first pin structure 41 and a second pin structure 42 arranged at both ends of the arc-shaped electric control telescopic rod; the arc-shaped electric control telescopic rod is connected with the antenna feed panel 2 through the first pin structure 41, and the arc-shaped electric control telescopic rod is connected with the antenna radiation panel 3 through the second pin structure 42. The telescopic structure 4 also plays a role in fixing the relative position of the antenna feed panel 2 and the antenna radiation panel 3.

[0056] It should be understood that a plurality of arc-shaped electric control telescopic rods can also be arranged in the telescopic structure 4 to jointly control the relative motion between the antenna feed panel 2 and the antenna radiation panel 3. For example, in a horizontal rotation range of 360 degrees, three sets of telescopic rods are used to control the relative rotation between the two panel bodies, and the three sets of structures are spaced apart by 120 degrees. This design can make the two panel bodies more stable.

[0057] Referring to

[0058] , Figure 5 Figure 5 ​It is a structure profile schematic view of the second embodiment of the VICTS satellite communication antenna of the present application. A circular through hole is arranged in the middle part of the azimuth rotating structure 1 to facilitate the installation of the waveguide rotating joint. The linear source conversion structure 21 further comprises a waveguide rotating joint 21a. The waveguide rotating joint 21a is connected to the waveguide port of the linear source conversion structure 21 through the circular through hole, so that the high-frequency electromagnetic signal can be stably fed into the linear source conversion structure 21 during the azimuth rotation of the antenna.

[0059] It should be understood that the high-frequency electromagnetic signal enters from the waveguide rotating joint 21a of the linear source conversion structure 21, passes through the 1-to-N cavity type power division network, and forms an approximately equal-amplitude and in-phase high-frequency electromagnetic field (i.e. the linear feed source signal) to reach the coupling position 21b. A coupling slot 22a of a suitable size is opened on the corresponding position of the feed plate main body structure 22 and the coupling position 21b of the linear source conversion structure. The inside of the feed plate main body structure is a circular cavity 22b. The high-frequency electromagnetic field propagating to the coupling position 21b of the linear source conversion structure enters the cavity 22b through the coupling slot 22a for propagation.

[0060] Further, the antenna radiation plate 3 comprises a first slot structure 31, a second slot structure 32 and a third slot structure 33 arranged in sequence from bottom to top, and the three-layer structure can be fixed together by a plurality of screws 34. The width of the slot in the first slot structure 31 is narrower than the width of the slot in the second slot structure 32. The number of slots in the third slot structure 33 is twice the number of slots in the first slot structure 31, and a plurality of radiation pairs are formed. Each layer of the antenna radiation plate can be processed separately, and the structure is simple, which can be processed by laser cutting and punching. Finally, the 3 layers are combined to realize the design of the radiation plate, which has small processing difficulty and low cost.

[0061] In a possible implementation, electromagnetic energy enters from the slot 35a of the first slot structure 31 of the feed plate, passes through the wider slot of the second slot structure 32, and is transmitted to the two slots 35b and 35c at the corresponding position of the third slot structure 33, and is radiated to the external free space. 35a, 35b and 35c form a 1-to-2 radiation pair. A plurality of such radiation pairs in the antenna radiation plate 3 can efficiently radiate the energy of the high-frequency electromagnetic field propagating in the cavity 22b of the antenna feed plate 2, forming a high-gain antenna beam.

[0062] It should be noted that when the radiating slot 35a of the antenna radiating disc 3 is parallel to the coupling slot 22a of the antenna feed disc 2, the amplitude and phase of the high-frequency signal radiated by the feed disc slot is a distribution state, forming a directional beam. When the radiating disc rotates a certain angle relative to the feed disc, the radiating slot 35a of the antenna radiating disc 3 is no longer parallel to the coupling slot 22a of the antenna feed disc 2, but has a certain angle, at this time the amplitude and phase of the high-frequency signal radiated by the feed disc slot is another distribution state, forming another directional beam. Since the beam formed in space is the interference of multiple antenna radiated electromagnetic waves in space, not the change of the radiation direction of a single antenna. That is, by changing the phase distribution state of the signal transmitted to each antenna, the direction of the beam formed by the antenna array in space can be changed. Each slot on the antenna radiating disc in the VICTS antenna is an antenna unit, and the change of the phase state between multiple slots is realized by rotating the feed disc. Rotating the feed disc by an angle corresponds to a distribution state of the signal phase radiated by each slot, which corresponds to a direction of the high-gain interference beam formed by the electromagnetic waves emitted by multiple slots in space. Therefore, by controlling the relative rotation angle of the feed disc and the radiating disc to change the signal phase of each radiating slot of the feed disc, the direction of the antenna beam can be controlled.

[0063] Referring to Figure 6 , Figure 6 FIG. 3 is a structural schematic diagram of a third embodiment of the VICTS satellite communication antenna according to the present application, which is based on the above embodiments. As shown in the figure, in this embodiment, the same or similar contents as in the above first and second embodiments can be referred to the above description, and will not be described in detail hereinafter. Figure 3

[0064] In satellite communication, the polarization direction of the satellite signal is usually fixed, generally including linear polarization (vertical / horizontal polarization) and circular polarization (left-handed / right-handed). The polarization of the VICTS antenna mainly depends on the direction of the radiating slot of the antenna radiating disc. In the process of adjusting the beam, the antenna radiating disc will be arbitrarily rotated, causing the linear polarization direction to change. In this case, if the received satellite signal is circularly polarized, it has little effect, because the linearly polarized antenna can receive circularly polarized signals. If the received satellite signal is also linearly polarized, the receiving effect is best when the polarization is aligned. If the satellite signal polarization and the antenna polarization direction are perpendicular to each other, the signal receiving effect will be greatly reduced.

[0065] ​To solve the above problems, the VICTS satellite communication antenna can further comprise a polarization matching disc 5 and a polarization adjusting structure 6; the polarization matching disc 5 is arranged on the side of the antenna radiation disc 3 away from the antenna feed disc 2; the polarization adjusting structure 6 is arranged between the antenna radiation disc 3 and the polarization matching disc 5; the polarization adjusting structure 6 is used to receive an input polarization positioning instruction and adjust the polarization direction between the antenna radiation disc 3 and a communication satellite according to the polarization positioning instruction.

[0066] In a possible implementation, the polarization adjusting structure 6 is an arc-shaped electrically controlled telescopic rod; the polarization adjusting structure 6 further comprises a third pin structure 61 and a fourth pin structure 62 arranged at two ends of the arc-shaped electrically controlled telescopic rod; the arc-shaped electrically controlled telescopic rod is connected with the antenna radiation disc 3 through the third pin structure 61, and the arc-shaped electrically controlled telescopic rod is connected with the polarization matching disc 5 through the fourth pin structure 62. Similar to the telescopic structure described above, the polarization adjusting structure 6 can also adopt a plurality of different schemes capable of realizing the performance of the telescopic structure, and is not limited in detail. A second ball layer can also be arranged between the antenna radiation disc 3 and the polarization matching disc 5, and the second ball layer contains a plurality of circular balls, so as to facilitate the relative rotation between the antenna radiation disc 3 and the polarization matching disc 5.

[0067] It should be noted that after the antenna radiation disc rotates, the polarization matching disc 5 can be adjusted to rotate through the polarization positioning instruction, so that the polarization direction of the VICTS antenna matches the polarization direction of the satellite signal.

[0068] In some designs, the polarization matching disc can be divided into an upper polarization layer and a lower polarization layer (not shown in the figure) to realize more complex polarization adjusting functions. The present embodiment only demonstrates the application of one polarization layer.

[0069] In addition, to achieve the above-mentioned purposes, the embodiment of the present application also proposes a satellite communication system. Since the satellite communication system comprises the VICTS satellite communication antenna described above, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here.

[0070] The above is only the preferred embodiment of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent flow transformation obtained by utilizing the content of the specification and drawings of the present application, or direct or indirect application in other related technical fields, is also included in the patent protection scope of the present application.

[0071] Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0072] It should be noted that all directional indications, such as up, down, left, right, front, back, etc., are merely used for convenience of description and are not intended to limit the application to any particular orientation.

[0073] In addition, the terms "first", "second", and the like, in the description and in the claims, are used for distinguishing between similar elements and not necessarily for describing a sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the descriptive terms "first", "second", etc., are to be interpreted, by those skilled in the art, as a structural or positional description and not by a chronological or serial order, unless and except when the explicit context clearly dictates otherwise. By way of another example, it is to be understood that the terms "first", "second", etc., are merely used to distinguish one element from another and are not to be construed as describing a sequential or chronological order among the elements unless explicitly stated otherwise.

Claims

1. A VICTS satellite communication antenna, characterized in that: The VICTS satellite communication antenna comprises: an azimuth rotation structure, an antenna feed dish and an antenna radiation dish arranged in sequence from bottom to top; A telescopic structure is provided between the antenna feeding plate and the antenna radiating plate; The telescopic structure is configured to receive an input direction positioning instruction and to telescope according to the direction positioning instruction to adjust the relative rotation angle between the antenna feed dish and the antenna radiation dish so that the direction of the antenna output beam is the initial adjustment rotation direction; The azimuth rotation structure is used to receive the direction positioning instruction and drive the antenna feed dish and the antenna radiation dish to rotate together according to the direction positioning instruction to adjust the direction of the antenna output beam from the initial adjustment rotation direction to the target output direction; The antenna feeding disk is used to convert the fed high-frequency electromagnetic signal into a linear feed signal, and radiate the linear feed signal to the external space through the antenna radiation disk according to the target output direction; Wherein, the telescopic structure is a first arc-shaped electrically controlled telescopic rod; the telescopic structure further comprises: a first pin structure and a second pin structure provided at both ends of the first arc-shaped electrically controlled telescopic rod; The first arc-shaped electrically controlled telescopic rod is connected to the antenna feeding plate through the first pin structure, and the first arc-shaped electrically controlled telescopic rod is connected to the antenna radiation plate through the second pin structure.

2. The VICTS satellite communication antenna according to claim 1, wherein: The antenna feed plate comprises: a line source conversion structure and a feed plate main structure; The line source conversion structure is arranged on a side close to the azimuth rotation structure, and the feeding disk main structure is arranged on a side close to the antenna radiation disk; The line source conversion structure is used to convert the high-frequency electromagnetic signal fed into the waveguide port into a linear feed signal, and transmit the linear feed signal to the feed disk main structure; The feeding disk main body structure is used to receive the linear feed source signal into the internal cavity, and radiate the linear feed source signal in the internal cavity to the external space through the antenna radiation disk.

3. The VICTS satellite communication antenna according to claim 2, wherein: A circular through hole is provided in the middle portion of the azimuth rotation structure, and the line source conversion structure further comprises: a waveguide rotation joint; The waveguide rotating joint is connected to the waveguide port of the line source conversion structure through the circular through hole to feed the high-frequency electromagnetic signal into the line source conversion structure.

4. The VICTS satellite communication antenna according to claim 3, wherein: The antenna radiation plate includes: a first slot structure, a second slot structure and a third slot structure arranged in sequence from bottom to top; The width of the slits in the first slit structure is narrower than the width of the slits in the second slit structure; The number of slots in the third slot structure is twice the number of slots in the first slot structure.

5. The VICTS satellite communication antenna according to claim 1, wherein: The VICTS satellite communication antenna further comprises: a first ball bearing layer; The first ball bearing layer is arranged between the antenna feeding plate and the antenna radiation plate.

6. The VICTS satellite communication antenna according to claim 1, wherein: The VICTS satellite communication antenna further comprises: a polarization matching dish and a polarization adjustment structure; The polarization matching disk is arranged on a side of the antenna radiation disk away from the antenna feeding disk; The polarization adjustment structure is arranged between the antenna radiation plate and the polarization matching plate; The polarization adjustment structure is used to receive an input polarization positioning instruction and adjust the polarization direction between the antenna radiation dish and the communication satellite according to the polarization positioning instruction.

7. The VICTS satellite communication antenna according to claim 6, wherein: The polarization adjustment structure is a second arc-shaped electrically controlled telescopic rod; the polarization adjustment structure further comprises: a third pin structure and a fourth pin structure provided at both ends of the second arc-shaped electrically controlled telescopic rod; The second arc-shaped electrically controlled telescopic rod is connected to the antenna radiation plate through the third pin structure, and the second arc-shaped electrically controlled telescopic rod is connected to the polarization matching plate through the fourth pin structure.

8. The VICTS satellite communication antenna according to claim 7, wherein: The VICTS satellite communication antenna further comprises: a second ball bearing layer; The second rolling ball layer is arranged between the antenna radiation disk and the polarization matching disk.

9. A communication system, characterized in that: The communication system comprises the VICTS satellite communication antenna according to any one of claims 1 to 8.

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