A Ku dual-band Cassegrain antenna and antenna system

Abstract

The application provides a Ku dual-frequency Cassegrain antenna and an antenna system, which are applied to the field of electromagnetic communication, and the Ku dual-frequency Cassegrain antenna comprises a reflecting component, an antenna support component, a radiating component and a swinging component, wherein the antenna support component is fixedly connected with the reflecting component and the swinging component respectively, the antenna support component is fixedly installed on the ground, the radiating component is installed at the connecting point of the antenna support component and the reflecting component, the swinging component is connected with the reflecting component and the antenna support component respectively, the reflecting component reflects electromagnetic signals for multiple times to make the electromagnetic signals more concentrated and dispersed, the antenna support places the antenna device on the ground to support, the radiating component is used for transmitting or receiving Ku electromagnetic signals, and the swinging component is used for quickly lifting or lowering the sub-reflector.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of electromagnetic communication, in particular to a Ku dual-frequency Cassegrain antenna and antenna system. BACKGROUND

[0002] The antenna is an intermediate converter of various electromagnetic waves, and the Cassegrain antenna is the most commonly used antenna in microwave communication, which is composed of three parts, i.e. a main reflector, a sub-reflector and a radiation source. Its working principle is that the electromagnetic wave emitted by the radiation source is reflected by the sub-reflector to the main reflector, and then a corresponding directional plane wave beam is obtained after reflection by the main reflector to realize directional emission. The Cassegrain antenna has the characteristics of high communication performance and simple device compared with the traditional parabolic antenna, but with the maturity of communication equipment, the traditional antenna equipment composed of single frequency bands such as C, X and KU cannot meet the needs of people, so there is an urgent need for an efficient multi-frequency band, and the placement position of the sub-reflector is too high relative to the traditional Cassegrain antenna, especially for large antennas, which leads to that the sub-reflector cannot be conveniently repaired in time when a fault occurs. Based on the above problems, a Ku dual-frequency Cassegrain antenna and antenna system are particularly proposed. SUMMARY

[0003] The present application aims to solve the problems that the sub-reflector cannot be conveniently repaired in time when a fault occurs at a higher position and the communication signal of a single frequency band cannot meet the needs, and provides a Ku dual-frequency Cassegrain antenna and antenna system.

[0004] The present application adopts the following technical means to solve the technical problems:

[0005] The present application provides a Ku dual-frequency Cassegrain antenna, which comprises a reflection assembly, an antenna support assembly, a radiation assembly and a swing assembly, wherein the reflection assembly comprises a main reflector and a sub-reflector, the swing assembly comprises a support arm, a swing arm and a swing motor.

[0006] The swing motor is movably connected with the first end of the support arm and the first end of the swing arm, the second end of the swing arm is fixedly connected with the sub-reflector, the second end of the support arm is fixedly connected with the antenna support assembly, and the swing motor provides power for the swing of the swing arm to drive the swing arm to swing in a circular arc with the first end of the swing arm as the center.

[0007] The antenna support assembly is fixedly installed on the ground, the antenna support assembly is connected with the main reflector and the swing arm, and the radiation assembly is installed on the main reflector.

[0008] Further, the reflecting surfaces of the main reflector and the sub reflector are oppositely arranged, and a swing column for assisting the main reflector to rotate with respect to the ground is arranged on the surface of the main reflector which is opposite to the surface of the main reflector facing the sub reflector, and the swing column is movably connected to the end of the antenna support assembly which is away from the ground.

[0009] Further, the antenna support assembly comprises a first support, a second support, an auxiliary support and a ground support, the first support is a cylindrical boss, the first end of the first support is movably connected to one end of the second support through a bearing, the ground support is fixedly connected to the second end of the first support, the auxiliary support is three cylindrical bosses, one end of the auxiliary support is connected to the first end of the first support, the other end of the auxiliary support is connected to the ground support, and the auxiliary support, the ground support and the first support form a triangle.

[0010] The second support is a cylindrical boss with an inner cavity, a bearing is connected to the first end of the second support, and a rotating column which cooperates with the swing column to rotate is mounted on the second end of the second support.

[0011] Further, the radiation assembly comprises a horn-type feed source, a low-frequency magnetron and a high-frequency magnetron, the horn-type feed source is a horn-shaped boss with an opening at one end, a platform is arranged inside the end of the horn-shaped boss which is away from the opening, a plurality of low-frequency magnetrons and high-frequency magnetrons are mixedly and arrayly distributed on the platform to form an array magnetron, the cylindrical boss is fixedly connected to the surface of the main reflector which is opposite to the surface of the main reflector facing the sub reflector, and the horn-type feed source is mounted at the focal axis of the main reflector.

[0012] Further, the mixed array distribution of the array magnetron is that one high-frequency magnetron is arranged between two adjacent low-frequency magnetrons, and one low-frequency magnetron is arranged between two adjacent high-frequency magnetrons.

[0013] Further, a rotating motor for rotating is mounted in the inner part of the second support, the driving end of the rotating motor is fixedly connected to the inner part of the second support, the rotating end of the rotating motor is fixedly connected to the first end of the first support, and the rotation center of the rotating motor coincides with the axis of the first support and the second support.

[0014] Further, a hydraulic column for adjusting the elevation angle is arranged on the second end of the second support, the hydraulic column comprises a hydraulic cylinder and a hydraulic arm, one end of the hydraulic arm is movably connected to the hydraulic cylinder, the other end of the hydraulic arm is fixedly connected to the back of the main reflector, and the one end of the hydraulic arm extends into the hydraulic cylinder, and the hydraulic cylinder is fixedly connected to the second end of the second support.

[0015] The application further provides a Ku dual-frequency Cassegrain antenna system, a translation module, a motor control module and an electromagnetic control module, and a Ku dual-frequency Cassegrain antenna, wherein the Ku dual-frequency Cassegrain antenna comprises a swing motor, a rotation motor and a radiation assembly, the radiation assembly comprises a low-frequency magnetic control device and a high-frequency magnetic control device, the translation module is electrically connected with the electromagnetic control module, the motor control module is electrically connected with the swing motor and the rotation motor respectively, and the electromagnetic control module is electrically connected with the low-frequency magnetic control device and the high-frequency magnetic control device.

[0016] The electromagnetic control module comprises a low-frequency control unit and a high-frequency control unit, the low-frequency control unit is electrically connected with the low-frequency magnetic control device, the high-frequency control unit is electrically connected with the high-frequency magnetic control device, the low-frequency control unit controls the low-frequency magnetic control device to receive or send electromagnetic signals in a frequency band of 13.4-14 GHz, and the high-frequency control unit controls the high-frequency magnetic control device to receive or send electromagnetic signals in a frequency band of 15.7-17.7 GHz.

[0017] Further, the motor control module comprises a swing control unit and a rotation control unit, wherein:

[0018] The swing control unit is electrically connected with the swing motor, and the swing control unit controls the swing motor to rotate forward or reversely;

[0019] The rotation control unit is electrically connected with the rotation motor of the Ku dual-frequency Cassegrain antenna, and the rotation control unit controls the rotation motor to rotate forward or reversely.

[0020] Further, the translation module is used for translating electromagnetic signals received by the low-frequency magnetic control device and the high-frequency magnetic control device, and the translation module recombines and translates the electromagnetic signals transmitted by the low-frequency magnetic control device and the high-frequency magnetic control device into computer-readable electrical signals.

[0021] The application provides a Ku dual-frequency Cassegrain antenna and an antenna system, and has the following beneficial effects:

[0022] (1) The traditional Cassegrain antenna is basically fixed by the sub-reflector directly, but when the antenna device is set higher than people, the sub-reflector is fixed on the main reflector, so it is very inconvenient to repair or detect the sub-reflector, therefore, the device specially proposes a sub-reflector connected by a swing assembly, which can quickly and conveniently lower the swing assembly to facilitate the staff to work.

[0023] (2) The traditional Cassegrain antenna basically adopts single-frequency transmission C, X and KU signals, but with the rapid development of science and technology, the single-frequency C, X and KU electromagnetic signals gradually cannot meet the requirements of the present, therefore, the device specially proposes a radiation assembly, which can receive or emit double-frequency KU electromagnetic signals at the same time, and the double-frequency signals do not affect each other. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is a whole three-dimensional structure schematic view of one embodiment of the Ku double-frequency Cassegrain antenna and antenna system of the application;

[0025] Figure 2 It is a partial three-dimensional structure schematic view of another embodiment of the Ku double-frequency Cassegrain antenna and antenna system of the application;

[0026] Figure 3 It is a partial three-dimensional structure schematic view of another embodiment of the Ku double-frequency Cassegrain antenna and antenna system of the application; Figure 2 It is a partial enlarged view of the Ku double-frequency Cassegrain antenna and antenna system of the application;

[0027] Figure 4 It is a partial three-dimensional structure schematic view of another embodiment of the Ku double-frequency Cassegrain antenna and antenna system of the application;

[0028] Figure 5 It is a partial enlarged view of the Ku double-frequency Cassegrain antenna and antenna system of the application; Figure 4 It is a partial enlarged view of the Ku double-frequency Cassegrain antenna and antenna system of the application;

[0029] Figure 6 It is a structure schematic view of one embodiment of the hydraulic column of the Ku double-frequency Cassegrain antenna and antenna system of the application;

[0030] Figure 7 It is a front view of one embodiment of the radiation assembly of the Ku double-frequency Cassegrain antenna and antenna system of the application;

[0031] Figure 8 It is a partial enlarged view of the Ku double-frequency Cassegrain antenna and antenna system of the application; Figure 7 It is a partial enlarged view of the Ku double-frequency Cassegrain antenna and antenna system of the application;

[0032] In the figure, the correspondence between the component name and the drawing number is as follows:

[0033] 1, reflection assembly; 101, main reflector; 102, sub-reflector; 103, swing column; 2, swing assembly; 201, support arm; 202, swing motor; 203, swing arm; 3, radiation assembly; 301, horn feed; 302, low-frequency magnetron; 303, high-frequency magnetron; 4, antenna support assembly; 401, first support; 402, second support; 403, auxiliary support; 404, ground support; 405, rotating column; 5, rotating motor; 6, hydraulic column; 601 hydraulic cylinder; 602 hydraulic arm;

[0034] The purposes, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0035] It should be understood that the specific embodiments described herein merely exemplify the present application and are not intended to limit the present application.

[0036] The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present application. 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.

[0037] With reference to the accompanying drawings, Figures 1-8 The Ku dual-frequency Cassegrain antenna provided by the present application comprises a reflection assembly 1, an antenna support assembly 4, a radiation assembly 3 and a swing assembly 2. The reflection assembly 1 comprises a main reflector 101 and a sub-reflector 102. The swing assembly 2 comprises a support arm 201, a swing arm 203 and a swing motor 202. The swing motor 202 is movably connected with the first end of the support arm 201 and the first end of the swing arm 203, respectively. The second end of the swing arm 203 is fixedly connected with the sub-reflector 102. The second end of the support arm 201 is fixedly connected with the antenna support assembly 4. The swing motor 202 provides power for the swing of the swing arm 203, so as to drive the swing arm 203 to swing in a circular arc with the first end of the swing arm 203 as the center. The antenna support assembly 4 is fixedly installed on the ground. The antenna support assembly 4 is connected with the main reflector 101 and the swing arm 203, respectively. The radiation assembly 3 is installed on the main reflector 101.

[0038] In the embodiment, when installing the antenna device, the main reflector 101 is installed on the antenna support assembly 4 after the antenna support assembly 4 is installed on the ground, the sub-reflector 102 is fixed on the swing arm 203, the support arm 201 is fixedly connected on the antenna support, and the support arm 201 and the swing arm 203 are connected through the swing motor 202. When the sub-reflector 102 needs to be lifted, the swing motor 202 works to drive the swing arm 203 to rotate in a circle, and the rotation center of the swing arm 203 is coincident with the rotation center of the swing motor 202.

[0039] In one embodiment, the reflecting surfaces of the main reflector 101 and the sub-reflector 102 are oppositely arranged, and the back surface of the main reflector 101 away from the sub-reflector 102 is further provided with a swing column 103 for assisting the main reflector 101 to rotate with the ground at an angle, and the swing column 103 is movably connected with the end of the antenna support assembly 4 away from the ground.

[0040] In the embodiment, the reflecting surfaces of the main reflector 101 and the sub-reflector 102 are used to reflect electromagnetic signals, and the swing column 103 is used to connect with the second support 402 and to rotate with the hydraulic column 6 when the elevation angle needs to be changed.

[0041] In the specific implementation, the main reflector 101 is specifically a reflecting surface of a rotating paraboloid, the sub-reflector 102 is specifically a reflecting surface of a rotating hyperboloid, the focal point of the main reflector is coincident with the focal point of the sub-reflector, and the focal axis of the sub-reflector is coincident with the focal axis of the main reflector. When receiving electromagnetic signals, the electromagnetic signals are directly reflected on the rotating paraboloid, and due to the physical property of the paraboloid, the electromagnetic signals are reflected on the focal point of the paraboloid, i.e. the sub-reflector 102. Since the focal axis of the rotating hyperboloid of the sub-reflector 102 is coincident with the focal axis of the main reflector 101, the sub-reflector 102 receives the electromagnetic signals reflected by the main reflector 101 and then reflects the electromagnetic signals on the low-frequency magnetic controller 302 and the high-frequency magnetic controller 303 on the same focal axis.

[0042] When transmitting electromagnetic signals, the electromagnetic signals are emitted through the low-frequency magnetic controller 302 and the high-frequency magnetic controller 303, and are directly reflected on the sub-reflector 102 on the same focal axis. The sub-reflector 102 reflects the electromagnetic signals on the main reflector 101, and the main reflector 101 reflects the electromagnetic signals reflected by the sub-reflector 102 in various directions.

[0043] In one embodiment, the antenna support assembly 4 comprises a first support 401, a second support 402, an auxiliary support 403 and a ground support 404, the first support 401 is a cylindrical boss, the first end of the first support is movably connected with one end of the second support 402 through a bearing, the ground support 404 is fixedly connected to the second end of the first support 401, the auxiliary support 403 is three cylindrical bosses, one end of the auxiliary support 403 is connected to the first end of the first support 401, the other end of the auxiliary support 403 is connected to the ground support 404, the auxiliary support 403 forms a triangle with the ground support 404 and the first support 401.

[0044] The second support 402 is a cylindrical boss with hollow inside, a bearing is connected to the first end of the second support 402, a rotating column 405 is installed on the second end of the second support 402, which is matched with the swing column 103 to rotate.

[0045] In this embodiment, the first support 401 is used to support the second support 402, the second support 402 is used to support the reflecting assembly 1 and the swing assembly 2, the auxiliary support 403 is used to assist the supporting effect of the first support 401 and stabilize the first support 401, and the ground support 404 is used to install the first support 401 and the auxiliary support 403 on the ground.

[0046] In specific implementation, when installing the antenna device, the ground support 404 is placed on the ground, then the first support 401 is vertically fixedly installed on the ground support 404, the two ends of the auxiliary support 403 are fixedly installed on the first support 401 and the ground support 404 respectively, so that the auxiliary support 403 is an equilateral triangle when viewing the antenna support assembly 4, and a cylindrical boss matched with the swing column 103 is arranged on the second end of the second support 402.

[0047] In one embodiment, the radiation assembly 3 comprises a horn-type feeder 301, a low-frequency magnetron 302 and a high-frequency magnetron 303, the horn-type feeder 301 is a horn-shaped boss with an opening at one end, and a platform is arranged inside the end away from the opening, a plurality of low-frequency magnetrons 302 and high-frequency magnetrons 303 are mixed arrayed on the platform to form an array magnetron, the cylindrical boss is fixedly connected to the main reflector 101 and the back side of the sub-reflector 102 through the reflecting surface of the main reflector 101, and the horn-type feeder 301 is installed at the focal axis of the main reflector 101.

[0048] In the embodiment, the horn-type feeder 301 is used to place the low-frequency magnetron 302 and the high-frequency magnetron 303 and direct the electromagnetic signal when the electromagnetic signal is transmitted, the low-frequency magnetron 302 is used to transmit or receive the electromagnetic signal in the frequency band of 13.4-14GHz, and the high-frequency magnetron 303 is used to transmit or receive the electromagnetic signal in the frequency band of 15.7-17.7GHz.

[0049] In the embodiment, when the electromagnetic signal is received, the sub-reflector 102 directly reflects the dense electromagnetic signal to the array magnetron formed by the low-frequency magnetron 302 and the high-frequency magnetron 303, and the array magnetron directly reads the electromagnetic signal translated into the electric signal; when the electromagnetic signal is transmitted, the array magnetron converts the information emitted into the electric signal, and then converts the electric signal into the electromagnetic signal on the low-frequency magnetron 302 and the high-frequency magnetron 303, and then forms the electromagnetic signal with direction under the action of the horn-type feeder 301 and transmits the electromagnetic signal to the sub-reflector, and then the sub-reflector 102 reflects the electromagnetic signal to the main reflector 101 and then transmits the electromagnetic signal in all directions.

[0050] In the embodiment, the mixed array distribution of the array magnetron is that one high-frequency magnetron 303 is arranged between every two low-frequency magnetrons 302, and one low-frequency magnetron 302 is arranged between every two high-frequency magnetrons 303.

[0051] In the embodiment, the array magnetron is used to receive the electromagnetic signal of different frequency bands at each position.

[0052] In the embodiment, when the electromagnetic signal reflected by the main reflector 101 is reflected to the array magnetron by the sub-reflector 102, the electromagnetic signal of different frequency bands can be read and converted at the same time if the electromagnetic signal can only cover a small part of the array magnetron.

[0053] In the embodiment, a rotating motor 5 is further arranged in the second support 402, the driving end of the rotating motor 5 is fixedly connected to the inside of the second support 402, the rotating end of the rotating motor 5 is fixedly connected to the first end of the first support 401, and the rotation center of the rotating motor 5 coincides with the axis of the first support 401 and the second support 402.

[0054] In the embodiment, the rotating motor 5 is used to rotate the second support 402, and the rotating motor 5 is a stepping motor.

[0055] In the embodiment, when the antenna device needs to rotate, the rotating end of the rotating motor 5 is connected to the first support 401, and the first support 401 is installed on the ground through the ground support 404. Therefore, when the rotating motor 5 works, the rotating motor 5 drives the main second support 402 to rotate, and the rotating motor 5 stops working when the main second support 402 rotates to the required direction.

[0056] In one embodiment, a hydraulic column 6 for adjusting the elevation angle is arranged on the second end of the second support 402. The hydraulic column 6 includes a hydraulic cylinder 601 and a hydraulic arm 602. One end of the hydraulic arm 602 is movably connected to the hydraulic cylinder 601, and the other end of the hydraulic arm 602 is fixedly connected to the back of the main reflector 101. The hydraulic arm 602 extends into the hydraulic cylinder 601, and the hydraulic cylinder 601 is fixedly connected to the second end of the second support 402.

[0057] In the embodiment, the hydraulic cylinder 601 is used to provide power, and the hydraulic arm 602 is used to transmit power.

[0058] In the embodiment, when the elevation angle of the reflecting assembly 1 needs to be increased, the hydraulic cylinder 601 works to provide hydraulic power, and the hydraulic arm 602 transmits the power of the hydraulic cylinder 601. At this time, the hydraulic arm 602 extends out to lift the reflecting assembly 1, and the angle between the reflecting assembly 1 and the ground is increased. When the elevation angle of the reflecting assembly 1 needs to be reduced, the hydraulic cylinder 601 is powered off, and the hydraulic arm 602 gradually extends into the hydraulic cylinder 601. At this time, the reflecting assembly 1 gradually descends, and the angle between the reflecting assembly 1 and the ground is reduced.

[0059] A Ku dual-frequency Cassegrain antenna system includes a translation module, a motor control module, an electromagnetic control module, and a Ku dual-frequency Cassegrain antenna. The Ku dual-frequency Cassegrain antenna includes a swing motor, a rotating motor, and a radiation assembly. The radiation assembly includes a low-frequency magnetic controller and a high-frequency magnetic controller. The translation module is electrically connected to the electromagnetic control module. The motor control module is electrically connected to the swing motor and the rotating motor, respectively. The electromagnetic control module is electrically connected to the low-frequency magnetic controller and the high-frequency magnetic controller.

[0060] In one embodiment, the electromagnetic control module comprises: a low-frequency control unit and a high-frequency control unit, the low-frequency control unit is electrically connected with the low-frequency magnetic controller 302, the high-frequency control unit is electrically connected with the high-frequency magnetic controller 303, the low-frequency control unit controls the low-frequency magnetic controller 302 to receive or send electromagnetic signals in the frequency band of 13.4-14 GHz, the high-frequency control unit controls the high-frequency magnetic controller 303 to receive or send electromagnetic signals in the frequency band of 15.7-17.7 GHz, the translation module is used for translating the electromagnetic signals received by the low-frequency magnetic controller 302 and the high-frequency magnetic controller 303, and the translation module recombines and translates the electromagnetic signals transmitted by the low-frequency magnetic controller 302 and the high-frequency magnetic controller 303 into electrical signals that can be directly read by a computer.

[0061] In specific implementation, when receiving Ku electromagnetic signals from the outside world, the low-frequency control unit and the high-frequency control unit control the low-frequency magnetic controller 302 and the high-frequency magnetic controller 303 to receive the dense 13.4-14 and 15.7-17.7 GHz frequency band electromagnetic signals reflected by the sub-reflector 102, and the low-frequency control unit and the high-frequency control unit convert the received electromagnetic signals into electrical signals that can be directly read by an external computer. When sending Ku electromagnetic signals to the outside world, the low-frequency control unit and the high-frequency control unit convert the information to be sent from electrical signals into 13.4-14 and 15.7-17.7 GHz frequency band electromagnetic signals in the low-frequency magnetic controller 302 and the high-frequency magnetic controller 303, and the electromagnetic signals form directional electromagnetic flow under the action of the horn-type feed device 301 and are sent to the sub-reflector 102.

[0062] In one embodiment, the motor control module comprises: a swing control unit and a rotation control unit, wherein:

[0063] The swing control unit is electrically connected with the swing motor 202, and the swing control unit controls the swing motor 202 to rotate forward or reversely;

[0064] The rotation control unit is electrically connected with the rotation motor 5 of the Ku dual-frequency Cassegrain antenna, and the rotation control unit controls the rotation motor 5 to rotate forward or reversely;

[0065] In the specific implementation: when the swing motor 202 needs to be controlled, the swing control unit controls the swing motor 202 to rotate forward, at this time the swing arm 203 gradually rises under the action of the swing motor 202, when the focal axis of the secondary reflector 102 on the swing arm 203 coincides with the focal axis on the primary reflector, the swing control unit controls the swing motor 202 to stop working, when the secondary reflector 102 needs to be detected, the swing control unit controls the swing motor 202 to rotate reversely, at this time the swing arm 203 gradually descends under the action of the swing motor 202, the secondary reflector 102 fixed on the swing arm 203 also gradually descends, when it descends close to the ground, the swing motor 202 stops working, when the second support 402 needs to be controlled to rotate, the rotation control unit works to control the rotation motor 5 to rotate forward and reversely, at this time the second support 402 rotates forward and reversely under the action of the rotation motor 5, when it rotates to the required direction, the rotation motor 5 stops working, at this time the second support 402 stops rotating.

[0066] In summary, when installing the antenna device, the main reflector 101 is installed on the antenna support assembly 4, one end of the support arm 201 is installed on the second support 402, the other end is movably connected with one end of the swing arm 203 through the swing motor 202, and the sub-reflector 102 is installed on the other end of the swing arm 203. At this time, the sub-reflector 102 is moved up and down by driving the swing arm 203 through the swing motor 202. When the swing control unit controls the swing motor 202 to rotate forward, the swing arm 203 gradually rises under the action of the swing motor 202. When the focal axis of the sub-reflector 102 on the swing arm 203 coincides with the focal axis on the main reflector, the swing control unit controls the swing motor 202 to stop working. When the sub-reflector 102 needs to be detected, the swing control unit controls the swing motor 202 to rotate reversely. At this time, the swing arm 203 gradually descends under the action of the swing motor 202, and the sub-reflector 102 fixed on the swing arm 203 also gradually descends. When the swing motor 202 stops working when descending close to the ground, the ground support 404 is placed on the ground, and then the first support 401 is vertically fixed and installed on the ground support 404. The two ends of the auxiliary support 403 are fixed on the first support 401 and the ground support 404, respectively, so that the auxiliary support 403 is an equilateral triangle when viewed from the antenna support assembly 4. A cylindrical boss cooperating with the swing column 103 is arranged on the second end of the second support 402. When the second support 402 needs to be controlled to rotate, the rotation control unit works to control the rotation motor 5 to rotate forward or reversely. At this time, the second support 402 rotates forward or reversely under the action of the rotation motor 5. When the second support 402 rotates to the required direction, the rotation motor 5 stops working, and the second support 402 stops rotating. When the elevation angle of the reflecting assembly 1 needs to be increased, the hydraulic cylinder 601 works to provide hydraulic power, and the hydraulic arm 602 transmits the power of the hydraulic cylinder 601. At this time, the hydraulic arm 602 extends to lift the reflecting assembly 1. At this time, the angle between the reflecting assembly 1 and the ground is increased. When the elevation angle of the reflecting assembly 1 needs to be reduced, the hydraulic cylinder 601 removes the power. At this time, the hydraulic arm 602 gradually extends into the hydraulic cylinder 601. At this time, the reflecting assembly 1 gradually descends, and the angle between the reflecting assembly 1 and the ground is reduced.

[0067] When receiving Ku electromagnetic signal from outside, the low frequency control unit and the high frequency control unit control the low frequency magnetron 302 and the high frequency magnetron 303 to receive the dense 13.4-14 and 15.7-17.7 GHz frequency band electromagnetic signal reflected from the sub-reflector 102, and the low frequency control unit and the high frequency control unit convert the received electromagnetic signal into electrical signal which can be directly read by the external computer. When sending Ku electromagnetic signal to outside, the low frequency control unit and the high frequency control unit convert the information to be sent from electrical signal into 13.4-14 and 15.7-17.7 GHz frequency band electromagnetic signal in the low frequency magnetron 302 and the high frequency magnetron 303, and the electromagnetic signal forms directional electromagnetic flow under the action of the horn feed 301 and is sent to the sub-reflector 102.

[0068] Although embodiments of the present application have been shown and described, it is to be understood that various modifications, substitutions, alternatives and variations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A Ku-band dual-frequency Cassegrain antenna, characterized in that, It includes a reflective assembly, an antenna support assembly, a radiating assembly, and a swing assembly, wherein the reflective assembly includes a main reflector and a sub-reflector, and the swing assembly includes a support arm, a swing arm, and a swing motor; The swing motor is movably connected to the first end of the support arm and the first end of the swing arm, respectively. The second end of the swing arm is fixedly connected to the sub-reflector. The second end of the support arm is fixedly connected to the antenna bracket assembly. The swing motor provides power for the swing arm to swing, so as to drive the swing arm to drive the sub-reflector to swing in an arc with the first end of the swing arm as the center. The antenna support assembly is fixedly installed on the ground. The antenna support assembly is connected to the main reflector and the swing arm respectively. The radiating assembly is installed on the main reflector. The reflective surfaces of the main reflector and the sub-reflector are placed opposite each other. The side of the main reflector facing away from the sub-reflector is also provided with a swing column to assist the main reflector in rotating with respect to the ground. The swing column is movably connected to the end of the antenna support assembly away from the ground. The antenna support assembly includes: a first support, a second support, an auxiliary support, and a ground support. The first support is specifically a cylindrical boss. The first end of the first support is movably connected to the first end of the second support via a bearing. The ground support is fixedly connected to the second end of the first support. The auxiliary support is specifically three cylindrical bosses. One end of the auxiliary support is connected to the first end of the first support, and the other end of the auxiliary support is connected to the ground support. The auxiliary support, the ground support, and the first support form a triangle. The second bracket is specifically a hollow cylindrical boss. A bearing is connected to the first end of the second bracket, and a rotating column that rotates in conjunction with the swing column is installed on the second end of the second bracket. The radiation assembly includes: a horn-shaped feed, a low-frequency magnetron, and a high-frequency magnetron. The horn-shaped feed is a horn-shaped protrusion with an opening at one end, and a platform is provided inside the horn-shaped protrusion at the end away from the opening. Multiple low-frequency magnetrons and high-frequency magnetrons are distributed in a mixed array on the platform to form an array magnetron. The cylindrical protrusion at the end away from the opening passes through the reflective surface of the main reflector and is fixedly connected to the side of the main reflector facing away from the sub-reflector. The horn-shaped feed is installed at the focal axis of the main reflector. The hybrid array distribution of the array magnetrons is as follows: a high-frequency magnetron is spaced apart between two adjacent low-frequency magnetrons, and a low-frequency magnetron is spaced apart between two adjacent high-frequency magnetrons.

2. The Ku-band dual-frequency Cassegrain antenna according to claim 1, characterized in that, Inside the second bracket, a rotary motor for rotation is also installed. The drive end of the rotary motor is fixedly connected to the inside of the second bracket, and the rotating end of the rotary motor is fixedly connected to the first end of the first bracket. The rotation center of the rotary motor coincides with the axis of the first bracket and the second bracket.

3. The Ku-band dual-frequency Cassegrain antenna according to claim 1, characterized in that, A hydraulic column for adjusting the elevation angle is also provided at the second end of the second bracket. The hydraulic column includes a hydraulic cylinder and a hydraulic arm. One end of the hydraulic arm is movably connected to the hydraulic cylinder, and the other end of the hydraulic arm is fixedly connected to the back of the main reflector. One end of the hydraulic arm extends into the hydraulic cylinder, and the hydraulic cylinder is fixedly connected to the second end of the second bracket.

4. A Ku-band dual-frequency Cassegrain antenna system, characterized in that, The antenna system comprises: a translation module, a motor control module, and an electromagnetic control module, and a Ku-band dual-frequency Cassegrain antenna as described in any one of claims 1-3, wherein the Ku-band dual-frequency Cassegrain antenna includes a swing motor, a rotating motor, and a radiating assembly, the radiating assembly including a low-frequency magnetron and a high-frequency magnetron, the translation module is electrically connected to the electromagnetic control module, the motor control module is electrically connected to the swing motor and the rotating motor respectively, and the electromagnetic control module is electrically connected to the low-frequency magnetron and the high-frequency magnetron, additionally: The electromagnetic control module includes a low-frequency control unit and a high-frequency control unit. The low-frequency control unit is electrically connected to the low-frequency magnetron, and the high-frequency control unit is electrically connected to the high-frequency magnetron. The low-frequency control unit controls the low-frequency magnetron to receive or transmit electromagnetic signals in the 13.4-14 GHz frequency band, and the high-frequency control unit controls the high-frequency magnetron to receive or transmit electromagnetic signals in the 15.7-17.7 GHz frequency band.

5. The Ku-band dual-frequency Cassegrain antenna system according to claim 4, characterized in that, The motor control module includes: a swing control unit and a rotation control unit, wherein: The swing control unit is electrically connected to the swing motor, and the swing control unit controls the swing motor to rotate in the forward or reverse direction. The rotation control unit is electrically connected to the rotating motor of the Ku dual-frequency Cassegrain antenna, and the rotation control unit controls the rotating motor to rotate in the forward or reverse direction.

6. The Ku-band dual-frequency Cassegrain antenna system according to claim 4, characterized in that, The translation module is used to translate the electromagnetic signals received by the low-frequency magnetron and the high-frequency magnetron. The translation module reassembles and translates the electromagnetic signals transmitted by the low-frequency magnetron and the high-frequency magnetron into electrical signals that can be directly read by a computer.

Images