Reflective ground satellite communication portable station

Abstract

The present invention relates to a reflective ground satellite communication portable station, comprising: a housing, one side of which is provided with a component mounting cavity; a heat dissipation cold plate disposed in the component mounting cavity; an antenna control assembly disposed on a side of the heat dissipation cold plate adjacent to the housing; an antenna cover rotatably connected to the heat dissipation cold plate; a polarization cover disposed on a side surface of the antenna cover adjacent to the heat dissipation cold plate; a polarization grid disposed on the polarization cover; an antenna array disposed in the antenna array surface mounting cavity between the antenna cover and the heat dissipation cold plate, comprising a passive antenna array and a phase shifter; a feed assembly comprising a polarizer, a feed rod, and a feed source, the polarizer penetrating the antenna cover and being fixedly connected to the heat dissipation cold plate. The present invention enables switching of antenna polarization modes by rotating the antenna cover and the polarization cover; the antenna array and the phase shifter are integrally integrated on the heat dissipation cold plate within the housing, thereby achieving lightweight and integrated portable station, thereby improving the portability of the communication station.

Description

Technical Field

[0001] The present invention relates to the technical field of satellite communications, and in particular to a reflective ground satellite communication portable station. Background Art

[0002] With the introduction of the 6G network concept, satellite communications are entering a period of rapid development. 6G, the sixth generation of mobile communications technology, promises increased network capacity and transmission rates, significantly outperforming 5G in peak rate, latency, traffic density, and connection density. This promises to spur the development of the Industrial Internet and the Internet of Things. 6G networks usher in a fully connected era, integrating terrestrial wireless communications with satellite communications. The associated low-orbit satellite Internet and the Internet of Things are experiencing rapid and comprehensive development.

[0003] Ground receiving devices are important hardware for low-orbit satellite Internet. Currently, most ground receiving devices use reflector antennas or phased array antennas. Although reflector antennas have the advantages of high directivity and high gain, they also have the disadvantages of being large in size, heavy in weight, and difficult to disassemble or move. Phased array antennas have the disadvantages of high cost and high power consumption. Both of the above antennas also have the disadvantage of a single polarization mode, which makes them inconvenient for mass promotion. Summary of the Invention

[0004] In order to solve the technical problems existing in the above-mentioned prior art, the purpose of the present invention is to provide a reflective ground satellite communication portable station, which has the characteristics of low cost, low power consumption, low profile and easy to carry, and can be widely used in ground satellite communication systems.

[0005] To achieve the above-mentioned object of the invention, the present invention provides a reflective ground satellite communication portable station, comprising:

[0006] A housing, one side of which is provided with a component mounting cavity;

[0007] a heat dissipation cold plate, arranged in the component mounting cavity;

[0008] The antenna control component, including a main control chip, a transceiver RF component and a duplexer, is arranged on a side of the heat dissipation cold plate close to the housing;

[0009] A radome is provided on one side of the housing and is rotatably connected to the heat dissipation cold plate, with an antenna array surface arrangement cavity formed between the radome and the heat dissipation cold plate;

[0010] A polarization cover is provided on the end surface of the antenna cover close to the heat dissipation cold plate; a polarization grid is provided on the polarization cover;

[0011] An antenna array surface is arranged in the antenna array surface arrangement cavity;

[0012] The feed assembly is arranged on a side of the antenna cover away from the antenna array surface, and includes a polarizer, a feed rod and a feed source arranged in sequence in a direction away from the antenna cover. The polarizer passes through the antenna cover and is fixedly connected to the heat dissipation cold plate.

[0013] According to a technical solution of the present invention, a protruding support portion is provided on the end surface of the heat dissipation cold plate away from the shell, and a feed assembly mounting groove is provided on the end surface of the support portion away from the shell;

[0014] A thread is provided on the outer circumferential surface of the support portion. The polarizer is inserted into the feed assembly mounting groove and fixedly connected to the support portion via a locking nut.

[0015] According to a technical solution of the present invention, the antenna cover is provided with a mounting hole adapted to the outer diameter of the support portion, the antenna cover is rotatably set on the support portion through the mounting hole, and the locking nut is set on the side of the antenna cover away from the heat dissipation cold plate.

[0016] According to a technical solution of the present invention, the antenna array includes a passive antenna array and a phase shifter, the polarization mode of the passive antenna array is dual-linear polarization, the phase shifter is a liquid crystal phase shifter, and the passive antenna array is arranged on a side of the liquid crystal phase shifter close to the antenna cover and connected by inter-layer coupling;

[0017] The passive antenna array is a dual-frequency common-aperture antenna composed of multi-layer coupled microstrip antennas, and the passive antenna array is arranged in a triangular array; the passive antenna array is electrically connected to the duplexer;

[0018] The liquid crystal phase shifter is connected to the main control chip via a differential transmission line.

[0019] According to a technical solution of the present invention, the transceiver RF component includes:

[0020] A transmitting radio frequency component, comprising an up-converter power amplifier, an input end of which is electrically connected to the main control chip, and an output end of which is electrically connected to the receiving end of the duplexer, wherein the receiving end of the duplexer is provided with a filter;

[0021] a receiving radio frequency component, comprising a low noise downconverter, the input of which is electrically connected to the output of the duplexer;

[0022] a tracking receiver, the input end of which is electrically connected to the output end of the receiving RF component;

[0023] The operating frequency band of the transmitting channel of the transmitting RF component is the Ka band, and the operating frequency band of the receiving channel of the receiving RF component is the K band.

[0024] According to a technical solution of the present invention, the feed source is a ring-coke feed source.

[0025] According to a technical solution of the present invention, the housing is further provided with:

[0026] A power interface, provided on the housing and electrically connected to the main control chip;

[0027] The network interface is arranged on the housing and is electrically connected to the main control chip via a modem.

[0028] According to a technical solution of the present invention, a star alignment component is further provided in the housing, and the star alignment component at least includes:

[0029] an inclinometer, for obtaining an initial angle of the portable station;

[0030] A positioning antenna, used to obtain positioning information of the portable station;

[0031] The star alignment button is arranged on the outside of the shell and is electrically connected to the main control chip. The main control chip calculates the star alignment angle according to the initial angle and the positioning information, and performs one-button star alignment according to the star alignment angle.

[0032] According to a technical solution of the present invention, a folding bracket is provided on the housing, and the folding bracket is arranged on an end surface of the housing away from the heat dissipation cold plate.

[0033] According to a technical solution of the present invention, a heat dissipation component is also included, including:

[0034] A cooling fan is provided on the cooling plate;

[0035] A heat pipe is arranged inside the heat dissipation cold plate;

[0036] A heat sink is provided on the heat dissipation cold plate, and the heat sink is provided on the outside of the heat conducting pipe;

[0037] The heat dissipation hole is arranged on the shell and penetrates the side wall of the shell.

[0038] According to a technical solution of the present invention, a device installation cavity is formed between the heat dissipation cold plate and the housing, and the device installation cavity is provided with:

[0039] A first device mounting frame is arranged in the middle of the device mounting cavity and is parallel to the end surface of the heat dissipation cold plate, and a plurality of the first device mounting frames are stacked;

[0040] The second device mounting frame is arranged outside the first device mounting frame, is inclined relative to the end surface of the heat dissipation cold plate, and one end of the second device mounting frame is connected to the heat dissipation cold plate.

[0041] Compared with the prior art, the present invention has the following beneficial effects:

[0042] The present invention proposes a portable reflective ground satellite communication station, comprising a housing and a heat dissipation cold plate. An antenna control assembly is disposed on the heat dissipation cold plate. A radome is rotatably connected to the heat dissipation cold plate. A polarization shield is disposed on the radome. A feed assembly comprises a polarizer, a feed rod, and a feed source. By rotating the radome and polarization shield, the polarization mode of the antenna array can be changed, thereby achieving switching between linear and circular polarization. The present invention enables switching of the antenna polarization mode by rotating the radome and polarization shield. The antenna array and phase shifter are integrated into a heat dissipation device within the housing, making the portable station lightweight and integrated, thereby improving the portability of the communication station.

[0043] In the present invention, the antenna array includes a passive antenna array and a phase shifter. The phase shifter adopts a liquid crystal phase shifter. The phase shifter loading voltage is changed by loading a variable capacitor on a differential transmission line to achieve phase shifting, thereby reducing the cost and power consumption of the portable station. Compared with traditional phased array antennas, the cost of the portable station provided by the present invention can be reduced by about 70%, and the power consumption is about half that of traditional phased arrays.

[0044] In the present invention, an initial positioning component is provided in the shell, including an inclinometer, a positioning antenna and a star positioning antenna. The initial angle of the portable station is obtained by the inclinometer, and the positioning information of the portable station is obtained by the positioning antenna. The main control chip calculates the star pointing angle according to the initial angle of the portable station and the positioning information, and performs one-button star pointing.

[0045] In the present invention, the portable station adopts a tile-like flat structure as a whole, with an integrated heat dissipation and structural design, light weight, low profile, and easy to carry and transport; it can be placed on the ground at a 45° angle through a bracket, which can meet the daily use requirements of ground satellite communications and has good application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be derived from these drawings without inventive effort.

[0047] Figure 1 A perspective view schematically showing a reflective ground satellite communication portable station provided in accordance with one embodiment of the present invention;

[0048] Figure 2 A perspective view schematically showing another angle of a reflective ground satellite communication portable station provided in accordance with one embodiment of the present invention;

[0049] Figure 3 A schematic diagram schematically illustrates the installation position of an antenna control assembly provided in accordance with one embodiment of the present invention;

[0050] Figure 4 The figure schematically shows the structural disassembly diagram of a reflective ground satellite communication portable station provided according to one embodiment of the present invention.

[0051] The corresponding relationship between component names and reference numerals is as follows:

[0052] 1. Feed source; 2. Feed rod; 3. Polarizer; 4. Locking nut; 5. Radome; 6. Polarization hood; 7. Folding bracket; 8. Aiming button; 9. Power interface; 10. Network interface; 12. Modem; 14. Duplexer; 15. Receiving RF component; 16. Transmitting RF component; 17. Main control chip; 18. Antenna array; 19. Housing; 20. Heat dissipation cold plate; 21. First device mounting bracket; 22. Heat dissipation hole; 23. Tracking receiver; 24. Heat sink; 25. Second device mounting bracket. DETAILED DESCRIPTION

[0053] The description of the embodiments in this specification should be combined with the corresponding drawings, which should be considered a complete part of this specification. In the drawings, the shapes and thicknesses of the embodiments may be exaggerated and indicated for simplicity or convenience. Furthermore, the various structural components in the drawings will be described separately. It is worth noting that components not shown in the drawings or not described in words are known to those of ordinary skill in the art.

[0054] The description of the embodiments herein and any references to directions and orientations are for ease of description only and are not to be construed as limiting the scope of the present invention. The following description of the preferred embodiments may involve combinations of features, which may exist independently or in combination. The present invention is not specifically limited to the preferred embodiments. The scope of the present invention is defined by the claims.

[0055] like Figure 1 As shown, a reflective ground satellite communication portable station of the present invention includes a shell 19, a heat dissipation cold plate 20, an antenna control component, a radome 5, a polarization cover 6, an antenna array surface 18 and a feed component.

[0056] The housing 19 is rectangular, and a component mounting cavity is provided on one side of the housing 19. The heat sink cold plate 20 is provided in the component mounting cavity. The antenna control assembly includes a main control chip 17, a transceiver RF assembly, and a duplexer 14, which are provided on the side of the heat sink cold plate 20 near the housing 19. The radome 5 is provided on one side of the housing 19 and is rotatably connected to the heat sink cold plate 20. An antenna array surface setting cavity is formed between the radome 5 and the heat sink cold plate 20. The polarization hood 6 is provided on the side surface of the radome 5 near the heat sink cold plate 20 and is fixed to the radome 5 by gluing or other means; the polarization hood 6 is provided with a polarization grid. The antenna array surface 18 is provided in the antenna array surface setting cavity.

[0057] The feed assembly is arranged on the side of the antenna cover 5 away from the antenna array surface 18, and includes a polarizer 3, a feed rod 2 and a feed source 1 arranged in sequence in the direction away from the antenna cover 5. The polarizer 3 passes through the antenna cover 5 and is fixedly connected to the heat dissipation cold plate 20.

[0058] Preferably, a protruding support portion is provided on the end surface of the heat dissipation cold plate 20 away from the housing 19, and a feed assembly mounting groove is provided on the end surface of the support portion away from the housing 19;

[0059] A thread is provided on the outer circumferential surface of the support portion. The polarizer 3 is inserted into the mounting groove of the feed assembly and is fixedly connected to the support portion via a locking nut 4 .

[0060] Preferably, the antenna cover 5 is provided with a mounting hole adapted to the outer diameter of the support portion, the antenna cover 5 is rotatably mounted on the support portion through the mounting hole, and the locking nut 4 is arranged on a side of the antenna cover 5 away from the heat dissipation cold plate 20 .

[0061] Preferably, the antenna array 18 includes a passive antenna array and a phase shifter, the polarization mode of the passive antenna array is dual-linear polarization, the phase shifter is a liquid crystal phase shifter, and the passive antenna array is provided on a side of the liquid crystal phase shifter close to the antenna cover 5 and is connected by inter-layer coupling;

[0062] The passive antenna array is a dual-frequency common-aperture antenna composed of multi-layer coupled microstrip antennas, and the passive antenna array is arranged in a triangular array; the passive antenna array is electrically connected to the duplexer 14;

[0063] The liquid crystal phase shifter is connected to the main control chip 17 via a differential transmission line.

[0064] Preferably, the transceiver RF component includes a transmitting RF component 16, a receiving RF component 15, and a tracking receiver 23. The transmitting RF component 16 includes an up-conversion power amplifier, whose input end is electrically connected to the main control chip 17, and whose output end is electrically connected to the receiving end of the duplexer 14, and a filter is provided on the receiving end of the duplexer 14. The receiving RF component 15 includes a low-noise down-converter, whose input end is electrically connected to the output end of the duplexer. The tracking receiver 23 has an input end electrically connected to the output end of the receiving RF component 15. The operating frequency band of the transmitting channel of the transmitting RF component 16 is the Ka band, and the operating frequency band of the receiving channel of the receiving RF component 15 is the K band.

[0065] Preferably, the feed source 1 is a ring coke feed source.

[0066] Preferably, the housing 19 is further provided with a power interface 9 and a network interface 10. The power interface 9 is provided on the housing 19 and is electrically connected to the main control chip 17 for connecting to an external power source to supply power to the main control chip 17. The network interface 10 is provided on the housing 19 and is electrically connected to the main control chip 17 via the modem 12 for accessing a communication network.

[0067] Preferably, a star alignment assembly is also provided within the housing 19. This assembly includes at least an inclinometer, a positioning antenna, and a star alignment button 8. The inclinometer is used to obtain the initial angle of the portable station; the positioning antenna is used to obtain the portable station's positioning information. The star alignment button 8 is located outside the housing 19 and is electrically connected to the main control chip 17. The main control chip 17 calculates the star alignment angle based on the initial angle and positioning information, allowing for one-touch star alignment based on the star alignment angle.

[0068] Specifically, after one-touch tracking is enabled, the main control chip 17 accesses the inertial navigation system through the positioning antenna to obtain the position information of the reflective ground satellite communication portable station. At the same time, the main control chip 17 accesses the satellite network through the network interface to obtain the satellite position or the satellite information built into the main control chip 17, controls the phase shifter to adjust the beam direction, and performs a conical scan in the area where the satellite is located. After detecting the signal, it locks and continues tracking based on the information refreshed by the inertial navigation system and whether the satellite information is updated. If the lock is lost, the satellite search is restarted.

[0069] Preferably, a folding bracket 7 is provided on the housing 19, and the folding bracket 7 is arranged on the end surface of the housing 19 away from the heat dissipation cold plate 20. The adjustment angle range of the folding bracket 7 is 0-45 degrees.

[0070] The housing also includes a heat dissipation assembly, comprising a cooling fan, a heat pipe, heat sink fins 24, and heat dissipation holes 22. The cooling fan is mounted on the heat dissipation cold plate 20; the heat pipe is mounted within the heat dissipation cold plate 20. The heat dissipation cold plate 20 is provided with a medium outlet and a medium inlet, connected to the heat pipe, for introducing the heat dissipation medium into the heat pipe. Heat sink fins 24 are mounted on the heat dissipation cold plate 20 and are positioned outside the heat pipe. Heat dissipation holes 22 are provided in the housing 19, extending through the sidewalls of the housing 19 to facilitate heat dissipation of electronic components within the component mounting cavity.

[0071] A component mounting cavity is formed between the heat sink cold plate 20 and the housing 19. A first component mounting bracket 21 and a second component mounting bracket 25 are located within the cavity. The first component mounting bracket 21 is positioned in the center of the cavity, parallel to the end face of the heat sink cold plate 20. Several first component mounting brackets 21 are stacked. The second component mounting bracket 25 is positioned outside the first component mounting bracket 21, tilted relative to the end face of the heat sink cold plate 20, and one end of the second component mounting bracket 25 is connected to the heat sink cold plate 20.

[0072] A first device mounting frame 21, positioned in the center of the device mounting cavity, forms a three-dimensional stacked device mounting structure. Second device mounting frames 25 are located outside the first device mounting frame 21, with one end connected to the heat sink cold plate 20, forming a three-dimensional suspended device mounting structure. This device mounting structure allows for optimal allocation of the device mounting space between the heat sink cold plate 20 and the housing 19. The second device mounting frame 25 utilizes the height space created by the stacked first device mounting frames 21 to achieve tilted placement of devices within the device mounting cavity. This improves device heat dissipation while avoiding increasing the height of the device mounting space, thereby achieving a lightweight and thinner portable communication station.

[0073] In the present invention, polarization shield 6 utilizes a multilayer printed circuit board (PCB) and achieves polarization deflection through a polarization grid composed of multiple layers of parallel, bent metal strips. The passive antenna array of antenna array 18 features dual-linear polarization. These dual-linearly polarized electromagnetic waves are deflected into dual circular polarization when passing through polarization shield 6. By rotating the polarization shield 90°, the antenna can switch between transmitting left-hand circular polarization and receiving right-hand circular polarization, or transmitting right-hand circular polarization and receiving left-hand circular polarization.

[0074] The radome 5 protects the polarization shield 6 and antenna array 18. The polarization shield 6 is fixed to the inside of the radome 5 by adhesive or other means. The radome 5 and polarization shield 6 can rotate synchronously to facilitate switching between high and low orbit satellite communications. The antenna array 18 consists of a passive antenna array and liquid crystal phase shifters, which can be used to change the beam direction.

[0075] In the present invention, the passive antenna array uses a shared transceiver unit, employing a multilayer coupled microstrip antenna. The array adopts a triangular array arrangement, and the transceiver channels utilize dual-band communication. The antenna arrays for the two frequency bands are located on different layers to prevent interference between the transceiver channels. The passive antenna array is stacked with a liquid crystal phase shifter, connected via inter-layer coupling. The liquid crystal phase shifter is connected to the main control chip 17 via a differential transmission line, and phase shifting can be achieved by varying the applied voltage by loading a variable capacitor.

[0076] In the present invention, the antenna array 18 is fed by a feed assembly; receiving and transmitting share the same feed assembly. Feed 1 is connected to polarizer 3 via feed rod 2. Polarizer 3 is used to help feed 1 form dual circular polarization. Polarizer 3 is fixedly connected to heat dissipation cold plate 20. Polarizer 3 is electrically connected to duplexer 14.

[0077] The duplexer 14 serves to split the transmit and receive signals. A filtering structure (such as a filter) is provided on the receiving end of the duplexer 14 to increase the isolation of the transmit channel.

[0078] In the present invention, the transmission channel uses a BUC (up-converting power amplifier) to achieve up-conversion and amplification functions. During transmission, the radio frequency signal emitted by the BUC is circularly polarized by the polarizer 3 and conducted to the feed source 1 through the feed rod 2, so that it can be transmitted to the antenna array 18 through the feed source 1. The signal emitted by the feed source 1 is decomposed into a linearly polarized signal by the antenna cover 5 and the polarization cover 6, and then enters the antenna array 18. After phase shifting by the liquid crystal phase shifter, the signal beam is deflected and then transmitted by the antenna array 18. The transmitted signal passes through the polarization cover 6 to achieve circular polarization of the transmitted signal. Through this process, the transmitted signal can achieve dual circular polarization.

[0079] The receiving channel uses an LNB (low-noise downconverter) for downconversion and low-noise amplification. When receiving signals, a liquid crystal phase shifter controls the beam direction. The RF signal passes through the radome 5 and polarization mask 6 and enters the antenna array 18. The antenna array 18 reflects the signal to the feed source 1, and then passes through the duplexer 14 to the LNB and tracking receiver 23.

[0080] The working process of the present invention is as follows:

[0081] Polarizer 3 is mounted within the feed assembly mounting slot and fixed to the support via locknut 4. Radome 5 is mounted on the support through its mounting holes and pivoted between locknut 4 and the heat sink cold plate 20. Polarizer 6 rotates with radome 5 on the support, while polarizer 3, feed 1, and feed rod 2 remain fixed relative to the heat sink cold plate 20.

[0082] The polarization mode of the antenna array 18 is dual linear polarization, and the polarizer 3 is dual circular polarization. A polarization grid is provided on the polarization cover 6. By rotating the polarization cover 6 and changing the angle between the polarization grid and the polarization circuit on the polarizer 3, the antenna polarization mode can be changed.

[0083] For example, the polarization state of the antenna array 18 after adjustment by the polarizer 3 is a right-handed state. When a right-handed circularly polarized wave in space is received, the right-handed circularly polarized wave becomes a linearly polarized wave after passing through the polarization grid on the polarization cover 6. After the linearly polarized wave is received by the antenna array 18, it is reflected from the antenna array 18 after being phase-shifted by the phase shifter, and then enters the feed source 1 after becoming circularly polarized through the polarization grid. After passing through the polarizer 3, it becomes linearly polarized and enters the duplexer 14. After passing through the duplexer 14, it enters the receiving channel and is sent to the tracking receiver 23.

[0084] It should be noted that the above is a preferred embodiment of the present invention. It should be noted that although the preferred embodiment of the present invention has been described, it is clear that those skilled in the art, once they understand the basic inventive concept of the present invention, can make various improvements and modifications without departing from the principles of the present invention. Such improvements and modifications should also be considered as within the scope of protection of the present invention. Therefore, the appended claims are intended to be interpreted as including the preferred embodiment and all changes and modifications that fall within the scope of the embodiments of the present invention.

Claims

1. A reflective ground satellite communication portable station, characterized in that: include: A housing (19) having a component mounting cavity provided on one side thereof; A heat dissipation cold plate (20) is arranged in the component installation cavity; An antenna control component, comprising a main control chip (17), a transceiver radio frequency component and a duplexer (14), is arranged on a side of the heat dissipation cold plate (20) close to the housing (19); A radome (5) is arranged on one side of the housing (19) and is rotatably connected to the heat dissipation cold plate (20), with an antenna array surface arrangement cavity formed between the radome (5) and the heat dissipation cold plate (20); A polarization cover (6) is provided on the end surface of the antenna cover (5) close to the heat dissipation cold plate (20); a polarization grid is provided on the polarization cover (6); An antenna array surface (18) is arranged in the antenna array surface arrangement cavity; A feed assembly is arranged on a side of the antenna cover (5) away from the antenna array surface (18), and includes a polarizer (3), a feed rod (2) and a feed source (1) arranged in sequence in a direction away from the antenna cover (5); the polarizer (3) passes through the antenna cover (5) and is fixedly connected to the heat dissipation cold plate (20).

2. The reflective ground satellite communication portable station according to claim 1, characterized in that: A protruding support portion is provided on the end surface of the heat dissipation cold plate (20) away from the shell (19), and a feed assembly mounting groove is provided on the end surface of the support portion away from the shell (19); The outer circumferential surface of the support portion is provided with a thread, and the polarizer (3) is inserted into the feed assembly mounting groove and fixedly connected to the support portion via a locking nut (4).

3. The reflective ground satellite communication portable station according to claim 2, characterized in that: The antenna cover (5) is provided with a mounting hole adapted to the outer diameter of the support portion, the antenna cover (5) is rotatably mounted on the support portion through the mounting hole, and the locking nut (4) is arranged on a side of the antenna cover (5) away from the heat dissipation cold plate (20).

4. The reflective ground satellite communication portable station according to claim 3, characterized in that: The antenna array (18) includes a passive antenna array and a phase shifter, the polarization mode of the passive antenna array is dual-linear polarization, the phase shifter is a liquid crystal phase shifter, the passive antenna array is arranged on a side of the liquid crystal phase shifter close to the antenna cover (5), and the passive antenna array and the liquid crystal phase shifter are connected by inter-layer coupling; The passive antenna array is a dual-frequency common-aperture antenna composed of multi-layer coupled microstrip antennas, and the passive antenna array is arranged in a triangular array; the passive antenna array is electrically connected to the duplexer (14); The liquid crystal phase shifter is connected to the main control chip (17) via a differential transmission line.

5. The reflective ground satellite communication portable station according to claim 1, characterized in that: The transceiver radio frequency component includes: A transmitting radio frequency component (16) includes an up-conversion power amplifier, an input end of which is electrically connected to the main control chip (17), and an output end of which is electrically connected to the receiving end of the duplexer (14), wherein the receiving end of the duplexer (14) is provided with a filter; a receiving radio frequency component (15), comprising a low noise down converter, the input end of which is electrically connected to the output end of the duplexer; A tracking receiver (23), the input end of which is electrically connected to the output end of the receiving radio frequency component (15); The operating frequency band of the transmitting channel of the transmitting radio frequency component (16) is the Ka frequency band, and the operating frequency band of the receiving channel of the receiving radio frequency component (15) is the K frequency band.

6. The reflective ground satellite communication portable station according to claim 5, characterized in that: The housing (19) is further provided with: A power interface (9) is provided on the housing (19) and is electrically connected to the main control chip (17); A network interface (10) is provided on the housing (19) and is electrically connected to the main control chip (17) via a modem (12).

7. The reflective ground satellite communication portable station according to claim 6, characterized in that: A star alignment component is also provided in the housing (19), and the star alignment component at least comprises: an inclinometer, electrically connected to the main control chip (17), for obtaining an initial angle of the portable station; a positioning antenna electrically connected to the main control chip (17) and used to obtain positioning information of the portable station; A star alignment button (8) is arranged on the outside of the housing (19) and is electrically connected to the main control chip (17). The main control chip (17) calculates the star alignment angle according to the initial angle and the positioning information, and performs one-button star alignment according to the star alignment angle.

8. The reflective ground satellite communication portable station according to claim 4, characterized in that: A folding bracket (7) is provided on the shell (19), and the folding bracket (7) is arranged on the end surface of the shell (19) away from the heat dissipation cold plate (20).

9. The reflective ground satellite communication portable station according to claim 8, characterized in that: Also included are heat dissipation components, including: A heat dissipation fan is arranged on the heat dissipation cold plate (20); A heat conducting pipe is arranged inside the heat dissipation cold plate (20); A heat sink (24) is provided on the heat dissipation cold plate (20), and the heat sink (24) is provided on the outside of the heat pipe; The heat dissipation hole (22) is provided on the housing (19) and penetrates the side wall of the housing (19).

10. The reflective ground satellite communication portable station according to claim 1, characterized in that: A device installation cavity is formed between the heat dissipation cold plate (20) and the housing (19), and the device installation cavity is provided with: A first device mounting frame (21) is arranged in the middle of the device mounting cavity and is parallel to the end surface of the heat dissipation cold plate (20), and a plurality of the first device mounting frames (21) are stacked; A second device mounting frame (25) is arranged outside the first device mounting frame (21), the second device mounting frame (25) is arranged obliquely relative to the end surface of the heat dissipation cold plate (20), and one end of the second device mounting frame (25) is connected to the heat dissipation cold plate (20).

Images