CN114374073A - Ka frequency range phased array antenna and terminal - Google Patents
Ka frequency range phased array antenna and terminal Download PDFInfo
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/08—Means for collapsing antennas or parts thereof
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/02—Arrangements for de-icing; Arrangements for drying-out ; Arrangements for cooling; Arrangements for preventing corrosion
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/27—Adaptation for use in or on movable bodies
- H01Q1/32—Adaptation for use in or on road or rail vehicles
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
- H01Q13/08—Radiating ends of two-conductor microwave transmission lines, e.g. of coaxial lines, of microstrip lines
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/28—Combinations of substantially independent non-interacting antenna units or systems
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/26—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
Abstract
The invention provides a Ka frequency band phased array antenna which is a foldable portable satellite communication antenna used in multiple scenes, and comprises: the antenna comprises an antenna array surface layer, a Ka-band phased array antenna wave control system layer, a heat dissipation system layer and a power supply layer which are electrically connected with each other and can be folded or unfolded, the antenna can be folded or unfolded, so that the antenna can be used in a vehicle or carried by a single soldier, and a satellite information acquisition module, a wave control mainboard, a transmitting array surface control plate and a receiving array surface control plate are integrated on the Ka-band phased array antenna wave control system layer, so that the position information, the attitude information, the inertial navigation information and the ephemeris information can be solved in real time to obtain a beam pointing angle, a control instruction of a beam is generated, and the transmitting array surface control plate and the receiving array surface control plate are controlled, so that the rapid satellite search can be realized under different scene conditions of 'static communication' or 'communication in motion', the satellite information can be obtained in real time, the satellite communication is carried out, and the communication efficiency is improved.
Description
Technical Field
The invention relates to the technical field of satellite navigation, in particular to a Ka frequency band phased array antenna and a terminal.
Background
In the prior art, under the condition of disaster, a communication vehicle cannot directly arrive at the scene, and rescue personnel need to carry rescue goods and medical equipment and also need to carry a vehicle-mounted communication terminal and a portable communication terminal. However, the existing vehicle-mounted communication terminal mostly adopts the mechanical rotation of the antenna to scan a certain airspace, and the general mechanical scanning antenna is realized by two-axis or three-axis rotation and occupies a large volume. Meanwhile, as the vehicle-mounted communication terminal and the portable communication terminal cannot be used in a switching manner, rescue workers need to carry the portable communication terminal, and a portable and small satellite antenna and a satellite communication terminal which can be used in multiple scenes are urgently needed.
Disclosure of Invention
The invention aims to provide a Ka frequency band phased array antenna and a terminal so as to realize a portable and small satellite antenna and a satellite communication terminal which can be used in multiple scenes.
In a first aspect, an embodiment provides a Ka band phased array antenna, including: the antenna array comprises an antenna array surface layer, a Ka frequency band phased array antenna wave control system layer, a heat dissipation system layer and a power supply layer, wherein the antenna array surface layer, the Ka frequency band phased array antenna wave control system layer, the heat dissipation system layer and the power supply layer are electrically connected with each other and can be folded or unfolded; the antenna array surface layer comprises a Ka antenna transmitting array surface and a Ka antenna receiving array surface which is separated from the Ka antenna transmitting array surface by a preset distance, and the separation distance can enable the antenna array surface layer to be folded or unfolded; the Ka frequency band phased array antenna wave control system layer comprises a wave control main board, a transmitting array panel, a receiving array panel and a satellite information acquisition module which are electrically connected with each other, wherein, the transmitting array panel and the receiving array panel are coupled with the Ka antenna transmitting array panel and the Ka antenna receiving array panel respectively, the satellite information acquisition module is used for acquiring position information, attitude information, beacon information and ephemeris information, the wave control mainboard is used for processing the position information, the attitude information, the beacon information and the ephemeris information to realize the resolving of the beam pointing angle and generate a control instruction of the beam which is respectively sent to the transmitting array panel and the receiving array panel, so that the transmitting front control board is used for adjusting the amplitude and the phase of the transmitting front of the Ka antenna according to the control command, the receiving array control board is used for adjusting the amplitude and the phase of the receiving array of the Ka antenna according to the control instruction; the radiating system layer comprises two radiating cavities and radiating components, wherein the two radiating cavities can respectively contain the antenna array surface layer and the Ka frequency band phased array antenna wave control system layer; and the power supply layer comprises a plurality of power supply sub-circuits which are used for respectively providing power for the antenna array surface layer, the Ka frequency band phased array antenna wave control system layer and the heat dissipation system layer.
Furthermore, the satellite information acquisition module comprises a navigation system positioning module, an inertial navigation module and a beacon receiver module, wherein the navigation system positioning module is used for acquiring position information, the inertial navigation module is used for acquiring attitude information, and the beacon receiver module is used for acquiring beacon information and ephemeris information containing satellite orbits.
Furthermore, the wave control mainboard comprises a first microprocessor and a second microprocessor which are electrically connected with each other, the first microprocessor is respectively and electrically connected with the navigation system positioning module, the inertial navigation module and the beacon receiver module, and is used for receiving the instruction of the baseband processor, obtaining the beam pointing angle and the correction value instruction of the transmitting antenna array surface or the receiving antenna array surface according to the position information, the attitude information, the beacon information and the ephemeris information, and sending the beam pointing angle and the correction value instruction to the second microprocessor; the second microprocessor is respectively electrically connected with the transmitting array panel and the receiving array panel and is used for calculating the amplitude and the phase value of each sub-array unit corresponding to the transmitting antenna array panel or the receiving antenna array panel and corresponding to the beam pointing angle according to the beam pointing angle and the correction value instruction, and converting the amplitude and the phase value into corresponding control instructions to be distributed to the transmitting array panel or the receiving array panel.
Furthermore, the transmitting array surface control board comprises a third microprocessor, a first frequency conversion module, a power distribution module and a multi-channel transmitting microprocessor which are electrically connected with each other; the third microprocessor is electrically connected with the second microprocessor and is used for receiving the beam pointing angle and the correction value instruction and sending a first radio frequency signal corresponding to the beam pointing angle and the correction value instruction to the first frequency conversion module; the first frequency conversion module is used for carrying out frequency conversion on the first radio frequency signal to obtain a second radio frequency signal and sending the second radio frequency signal to the power distribution module; the power distribution module is used for distributing the equal power of the second radio frequency signal to the multi-channel transmitting microprocessor; the multi-channel transmitting microprocessor is electrically connected with the transmitting antenna array surface and used for transmitting the second radio-frequency signals distributed with equal power to the transmitting antenna array surface to radiate the second radio-frequency signals to the space after signal processing.
Furthermore, the receiving array surface control board comprises a fourth microprocessor, a second frequency conversion module, a power synthesis module and a multi-channel receiving microprocessor which are electrically connected with each other; the multi-channel receiving microprocessor is electrically connected with the receiving antenna array surface and is used for receiving the second radio-frequency signal received by the receiving antenna array surface, processing the second radio-frequency signal and sending the second radio-frequency signal to the power synthesis module; the power synthesis module is used for carrying out power synthesis on the received second radio frequency signal and converting the second radio frequency signal into a radio frequency signal corresponding to a wave beam; the second frequency conversion module is used for carrying out frequency conversion on the radio frequency signals corresponding to the wave beams to obtain fourth radio frequency signals and sending the fourth radio frequency signals to the fourth microprocessor; the fourth microprocessor is electrically connected with the second microprocessor and used for sending the fourth radio frequency signal to the second microprocessor.
Further, the Ka antenna transmitting array comprises a plurality of Ka transmitting array units generating the circularly polarized radiation, and each Ka transmitting array unit is a double-fed microstrip antenna.
Further, the Ka antenna receiving array comprises a plurality of Ka receiving array units for generating circularly polarized radiation, each Ka receiving array unit is a double-fed microstrip antenna, and a 90-degree electric bridge is used as a feed network.
Furthermore, a plurality of low-frequency pin header connectors are arranged among the antenna array surface layer, the Ka frequency band phased array antenna wave control system layer and the power supply layer, and the low-frequency pin header connectors are used for transmitting power supply signals and control signals; and a plurality of radio frequency connectors are also arranged between the antenna array surface layer and the Ka frequency band phased array antenna wave control system layer, and the radio frequency connectors are used for transmitting radio frequency signals.
Furthermore, the Ka-band phased array antenna wave control system layer also comprises a multimode modem module electrically connected with the wave control mainboard, and the multimode modem module is used for adaptively selecting different high-low orbit constellations for communication.
In a second aspect, an embodiment provides a Ka band phased array antenna terminal, including the Ka band phased array antenna according to any one of the foregoing embodiments, further including: the satellite communication terminal placing box comprises a satellite communication terminal placing box body, a portable power supply and a sucker.
According to the specific embodiment provided by the invention, the invention has the following technical effects:
1) the invention provides a Ka frequency band phased array antenna, wherein an antenna array surface layer comprises a Ka antenna transmitting array surface and a Ka antenna receiving array surface which is separated from the Ka antenna transmitting array surface by a preset distance, and the separation distance can enable the antenna array surface layer to be folded or unfolded, so that the size of the antenna array surface layer can be reduced by half, the use space of a user is improved, and the antenna array surface layer is more convenient to carry.
2) Through integrating the satellite information acquisition module at the Ka frequency band phased array antenna wave control system layer, the wave control mainboard, the transmitting array panel and the receiving array panel, the position information, the attitude information, the inertial navigation information and the ephemeris information can be resolved in real time to obtain the beam pointing angle, and a beam instruction is issued to the transmitting array panel and the receiving array panel, the control panel feedback information is read back and checked, namely, the phase array controlled electrical scanning technology can be adopted to realize quick satellite search, the satellite information can be obtained in real time, the satellite communication is carried out, the communication efficiency is improved, the traditional power amplifier BUC, the low noise amplifier LNB, the down conversion amplifier BDC and the paraboloid or horn plane antenna can be replaced, the size and the weight of the antenna can be reduced, the use efficiency of a user is improved, and the carrying is more convenient.
3) In order to realize the wide-angle scanning characteristic, the parasitic patch is inverted on the lower surface of the first medium layer, and the reactance change generated by the first medium layer during scanning is opposite to the reactance change generated by the floor, so that the reactance change caused by scanning can be counteracted, the impedance mismatch degree is reduced, the array can be scanned to a relatively large angle, and meanwhile, a design method of compromise optimization is adopted for units during array assembling, so that the influence of mutual coupling on the scanning capacity of the array is further reduced;
4) a plurality of low-frequency pin header connectors are arranged among the antenna array surface layer, the Ka frequency band phased array antenna wave control system layer and the power supply layer, and the low-frequency pin header connectors are used for transmitting power supply signals and control signals; a plurality of radio frequency connectors are arranged between the antenna array surface layer and the Ka frequency band phased array antenna wave control system layer and used for transmitting radio frequency signals, so that vertical interconnection is achieved, cables, connectors, screws, structural members and the like occupying large space and weight in the traditional antenna are replaced, and the size and the weight of a product are reduced.
5) The Ka frequency band phased array antenna wave control system layer comprises a multimode modem module 25, and the multimode modem module is used for adapting and selecting different high-low orbit constellations for communication.
6) A second aspect of the present invention provides a Ka-band phased array antenna terminal including the Ka-band phased array antenna according to any one of the foregoing embodiments, further including: the satellite communication terminal placing box comprises a satellite communication terminal placing box body, a portable power supply and a sucker. Not only can realize that the individual soldier conveniently carries, as independent satellite communication terminal, realize the intercommunication communication interconnection in quiet, can also adsorb on the vehicle through the sucking disc, realize on-vehicle communication interconnection in moving for can use and light small and exquisite satellite communication terminal in many scenes.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 provides a first schematic diagram of a structure of a Ka-band phased array antenna;
FIG. 2 provides a second schematic structural diagram of a Ka-band phased array antenna;
FIG. 3 provides a third schematic diagram of a structure of a Ka-band phased array antenna;
FIG. 4 provides a fourth schematic diagram of a Ka-band phased array antenna;
FIG. 5 provides a fifth schematic diagram of a Ka-band phased array antenna;
fig. 6 provides a sixth schematic diagram of a Ka-band phased array antenna;
fig. 7 provides a seventh structural diagram of a Ka-band phased array antenna;
fig. 8 provides an eighth schematic structural diagram of a Ka-band phased array antenna;
fig. 9 provides a schematic diagram nine of a Ka band phased array antenna;
fig. 10 provides a schematic diagram of a structure of a Ka-band phased array antenna.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Some embodiments of the invention are described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.
Noun interpretation
The Ka band is a part of the microwave band of the electromagnetic spectrum, the frequency range of which is 26.5-40 GHz. Ka represents the upper K-above (K-above), in other words, the band is directly above the K band. The Ka band, also known as the 30/20GHz band, is commonly used for satellite communications.
Phased array antenna: the directional pattern shape of the antenna is changed by controlling the feeding phase of the radiation elements in the array antenna. The control phase can change the direction of the maximum value of the antenna pattern so as to achieve the purpose of beam scanning.
In the prior art, the area of a Chinese mountain area accounts for 69.1% of the total area of the whole country, vehicles cannot reach many places, particularly when geological disasters occur, roads are damaged, communication vehicles cannot directly reach the site, and people are required to carry communication equipment to walk to rescue. At present, the vehicle-mounted communication terminal and the portable communication terminal are two sets of equipment, the cost is high, the occupied space is large, and the vehicle-mounted communication terminal and the portable communication terminal cannot be mutually converted for use.
Particularly in the medical direction, when medical assistance is performed in a place where the communication equipment is poor, local ground communication is interrupted or the signal is poor. In the places where vehicles can not arrive, the portable terminal is required to be carried for positioning and communication. However, each member of the medical squad needs to carry a large amount of medical equipment, but the conventional vehicle-mounted communication terminal mostly adopts mechanical rotation of an antenna to scan a certain airspace, and a general mechanical scanning antenna is realized by two-axis or three-axis rotation and occupies a large volume. Meanwhile, as the vehicle-mounted communication terminal and the portable communication terminal can not be used in a conversion mode, when the medical squad member walks to a disaster area, the vehicle-mounted communication equipment and the portable communication terminal which need to be carried are large in occupied space and inconvenient to use.
In order to solve the above problems, the present application provides a Ka band phased array antenna, which is configured such that, by spacing a predetermined distance between a transmission front of a Ka antenna and a reception front of the Ka antenna, the spacing distance can enable the antenna array surface layer to be folded or unfolded, and the wave control mainboard, the transmitting array surface control board, the receiving array surface control board and the satellite information acquisition module are integrated through the Ka frequency band phased array antenna wave control system layer, can solve the position information, the attitude information, the inertial navigation information and the ephemeris information in real time to obtain the beam pointing angle, generate a control instruction of the beam, control the transmitting array panel and the receiving array panel, thereby realizing rapid satellite search, real-time acquisition of satellite information, satellite communication, improvement of communication efficiency, and then can reduce size and weight of the aerial, has raised the user's availability factor, it is more portable too.
Example one
Fig. 1 provides a first schematic structural diagram of a Ka-band phased array antenna, where the Ka-band phased array antenna 100 includes: the antenna array comprises an antenna array surface layer 10, a Ka frequency band phased array antenna wave control system layer 20, a heat dissipation system layer 30 and a power supply layer 40 which are electrically connected with each other and can be folded or unfolded.
The antenna array surface layer 10 comprises a Ka antenna transmitting array 11 and a Ka antenna receiving array 12 which is separated from the Ka antenna transmitting array 11 by a preset distance, and the separation distance can enable the antenna array surface layer 10 to be folded or unfolded.
Specifically, the Ka antenna transmitting array 11 and the Ka antenna receiving array 12 are separated by a preset distance, the preset distance is at least 80 mm to 100 mm, so that the antenna array surface layer 10 can be folded or unfolded, and is convenient to carry, and the Ka antenna transmitting array 11 and the Ka antenna receiving array 12 can be folded and connected in a hinge, a screw, and the like, which is not limited specifically.
The preset distance is arranged between the Ka antenna transmitting array 11 and the Ka antenna receiving array 12, so that the size of the antenna array surface layer can be reduced by half, the use space of a user is improved, and the antenna array is more convenient to carry.
The Ka frequency band phased array antenna wave control system layer 20 comprises a wave control main board 21, a transmitting array surface control board 22, a receiving array surface control board 23 and a satellite information acquisition module 24 which are electrically connected with each other, wherein, the transmitting array control board 22 and the receiving array control board 23 are coupled with the Ka antenna transmitting array 11 and the Ka antenna receiving array 12, respectively, the satellite information acquisition module 24 is used for acquiring position information, attitude information, beacon information and ephemeris information, the wave control main board 21 is used for processing the position information, the attitude information, the beacon information and the ephemeris information to realize resolving of the beam pointing angle, and generating control instructions of the beam, which are respectively sent to the transmitting array control board 22 and the receiving array control board 23, so that the transmit front control board 22 is used to adjust the amplitude and phase of the Ka antenna transmit front 11 according to the control command, and a reception front control board 23 for adjusting the amplitude and phase of the Ka antenna reception front 12 according to the control instruction.
Specifically, the Ka-band phased array antenna wave control system layer 20 is an important component of the Ka-band phased array antenna, and in the prior art, the attitude and the geographic position of the vehicle-mounted phased array antenna platform continuously change in the motion process, so that the antenna beams are deviated and rolled, and signals are easily weakened or lost. In order to ensure the stability of the vehicle-mounted phased array, the wave control system layer 20 of the Ka-band phased array antenna comprises a wave control main board 21, a transmitting array surface control board 22, a receiving array surface control board 23 and a satellite information acquisition module 24 which are electrically connected with each other, at least the position information, attitude information, beacon information and ephemeris information can be collected in real time by the satellite information collection module 24, the internal and external temperature information and power information of the antenna can be collected, the wave control mainboard 21 processes the position information, the attitude information, the beacon information and the ephemeris information to realize the resolving of the beam pointing angle, and generates a control command of the beam, which is respectively sent to the transmitting array panel 22 and the receiving array panel 23, so that the transmit front control board 22 is used to adjust the amplitude and phase of the Ka antenna transmit front 22 according to the control command, and the receiving front control board 23 is used for adjusting the amplitude and the phase of the Ka antenna receiving front 23 according to the control command.
Through at Ka frequency channel phased array antenna wave control system layer 20 integrated satellite information acquisition module, the ripples accuse mainboard, launching array face control panel and receiving array face control panel, can solve position information in real time, attitude information, inertial navigation information and ephemeris information obtain the beam directive angle, and send the beam instruction to launching array control panel and receiving array control panel, read back and check control panel passback information, adopt phased array accuse electrical scanning technique can realize searching for the star fast promptly, and then can make and replace traditional power amplifier BUC, low noise amplifier LNB, down conversion amplifier BDC and parabolic or loudspeaker planar antenna, and then can reduce size and weight of antenna, user's availability factor has been improved, also more portable.
The heat dissipation system layer 30 includes two heat dissipation cavities 31 and heat dissipation assemblies 32, which can respectively accommodate the antenna array surface layer 10 and the Ka-band phased-array antenna wave control system layer 20.
Specifically, antenna array surface layer 10 and Ka frequency channel phased array antenna wave control system layer 20 can produce the heat radiation in the course of the work, can carry out heat conduction cooling through setting up cooling system layer 30, this cooling system layer includes two heat dissipation cavity 31, can set up the heat-conducting plate in every heat dissipation cavity 31, radiator unit such as fan, specifically can set up according to actual conditions, distribute around this antenna array surface layer 10 and this Ka frequency channel phased array antenna wave control system layer 20, thereby realize the cooling to antenna array surface layer 10 and Ka frequency channel phased array antenna wave control system layer 20, guarantee satellite communication's reliability and stability.
In one embodiment, the heat dissipation assembly 32 may include a fan, a heat sink, and a temperature-uniforming plate, which are disposed around the heat dissipation chamber 31 by means of screws or welding.
In one embodiment, a heat sink may be disposed in contact with the waved master 21 to conduct heat to the heat sink, and to carry away the heat by strong wave convection.
In one embodiment, the heat radiating fins can be connected to the wave control system layer of the Ka-band phased array antenna in a welding mode, and the temperature equalizing plate and the heat radiating fins are connected with the heat radiating cavity through screws. The specific setting can be according to the actual conditions.
The power layer 40 includes a plurality of power sub-circuits 41 for providing power to the antenna array surface layer 10, the Ka band phased array antenna wave control system layer 20, and the heat dissipation system layer 30, respectively.
Specifically, the power layer 40 includes a plurality of power sub-circuits 41, which respectively provide the antenna array surface layer 10, the Ka-band phased array antenna wave control system layer 20, and the heat dissipation system layer 30, so that the conversion from the external power voltage to the operating voltage of the Ka-band phased array antenna can be realized, the electromagnetic interference can be eliminated, and the individual modules can be independently powered, so that the functions of overheating, overvoltage, overcurrent protection and the like of the individual modules can be realized.
The Ka band phased array antenna provided by the embodiment is a foldable portable satellite communication antenna used in multiple scenes, and comprises: the antenna comprises an antenna array surface layer, a Ka frequency band phased array antenna wave control system layer, a heat dissipation system layer and a power supply layer which are electrically connected with each other and can be folded or unfolded, and the antenna can be folded or unfolded, so that the antenna can be used on a vehicle or carried by a single soldier, the size can be reduced by half, the use space of a user is increased, and the antenna is more convenient to carry. In addition, through the Ka frequency band phased array antenna wave control system layer integrated wave control mainboard, the transmitting array panel, the receiving array panel and the satellite information acquisition module, the resolving of the beam pointing angle is realized by processing the position information, the attitude information, the beacon information and the ephemeris information, the control instruction of the beam is generated and is respectively sent to the transmitting array panel and the receiving array panel, so that the transmitting array panel is used for adjusting the amplitude and the phase of the transmitting array of the Ka antenna according to the control instruction, and the receiving array panel is used for adjusting the amplitude and the phase of the receiving array of the Ka antenna according to the control instruction, thereby the phase array control electrical scanning technology can be adopted to realize the fast star search, replace the traditional power amplifier BUC, low noise amplifier LNB, down conversion amplifier BDC and paraboloid or horn plane antenna, and further reduce the size and the weight of the antenna, the use efficiency of the user is improved, and the carrying is more convenient. The radiating system layer comprises two radiating cavities and radiating components, wherein the two radiating cavities can respectively accommodate the antenna array surface layer and the Ka-band phased-array antenna wave control system layer, so that radiating processing of the Ka-band phased-array antenna in the working process can be realized, and reliability and stability of satellite communication are further ensured. The power layer comprises a plurality of power supply sub-circuits, and can respectively provide power for the antenna array surface layer, the Ka frequency band phased array antenna wave control system layer and the heat dissipation system layer, so that the conversion from external power voltage to the working voltage of the Ka frequency band phased array antenna can be realized, the electromagnetic interference is eliminated, and the functions of overheating, overvoltage, overcurrent protection and the like of each independent module can be realized by respectively supplying power for each module independently.
Further, fig. 2 provides a structural schematic diagram of a Ka-band phased array antenna, where the satellite information collection module 24 includes a navigation system positioning module 241, an inertial navigation module 242, and a beacon receiver module 243, where the navigation system positioning module 241 is configured to collect position information, the inertial navigation module 242 is configured to collect attitude information, and the beacon receiver module 243 is configured to collect beacon information and ephemeris information including satellite orbits.
Specifically, the navigation system positioning module 241 may obtain the position information of the satellite according to any one of the global navigation positioning systems such as GPS, GNSS, and beidou. The inertial navigation module 242 may acquire attitude information of a carrier corresponding to the Ka-band phased array antenna, and the beacon receiver module 243 is configured to acquire beacon information and ephemeris information including satellite orbits, where the beacon information may be a beacon signal sent by a synchronous satellite, and converts the beacon signal into an intermediate-frequency signal by down-conversion, then detects a direct-current voltage proportional to the strength of the beacon signal, provides a signal strength voltage corresponding to the satellite beacon signal at different angular positions relative to the antenna, and sends the signal strength voltage to the Ka-band phased array antenna wave control system layer in the form of the direct-current voltage, thereby completing automatic tracking of the antenna on the satellite. The navigation system positioning module 241 and the inertial navigation module 242 may be combined together, for example, by using a GNSS/INS combined navigation board. In addition, the device can be arranged separately, and the device can be specifically arranged according to actual conditions.
The satellite information acquisition module 24 integrates the navigation system positioning module 241, the inertial navigation module 242 and the beacon receiver module 243, so that satellite data can be collected in real time, automatic tracking of the antenna on a satellite can be completed, and not only 'static communication' of a portable satellite communication terminal can be realized, but also 'communication in motion' of a vehicle-mounted satellite communication terminal can be realized.
Further, fig. 3 provides a structural schematic diagram of a Ka-band phased array antenna, where the wave-controlled motherboard 21 includes a first microprocessor 210 and a second microprocessor 220 that are electrically connected to each other, and the first microprocessor 210 is electrically connected to a navigation system positioning module 241, an inertial navigation module 242, and a beacon receiver module 243, respectively, and is configured to receive a baseband processor instruction, and obtain a beam pointing angle and a correction value instruction of the transmitting antenna array 11 or the receiving antenna array 12 according to the position information, the attitude information, the beacon information, and the ephemeris information, and send the obtained beam pointing angle and correction value instruction to the second microprocessor 220; the second microprocessor 220 is electrically connected to the transmitting array panel 22 and the receiving array panel 23, respectively, and is configured to calculate the amplitude and phase value of each sub-array unit corresponding to the transmitting antenna array 11 or the receiving antenna array 12 corresponding to the beam pointing angle according to the beam pointing angle and the correction value instruction, and convert the amplitude and phase value into corresponding control instructions to be distributed to the transmitting array panel 22 or the receiving array panel 23.
Specifically, as shown in fig. 3, the first microprocessor 210 may be a DSP digital signal processor, and the second microprocessor 220 may be an FPGA field programmable logic gate array processor, where the DSP digital signal processor has a strong data processing capability and a high operation speed, and may integrate circuits such as a communication interface, a power supply circuit, a clock circuit, a signal conditioning circuit, a program memory, and a level conversion circuit. The FPGA is provided with abundant configurable logic modules and I/O modules, and can integrate a control interface, a power supply circuit, a clock circuit, a configuration circuit, a storage circuit, a level conversion circuit, a T/R control interface and the like.
In one embodiment, information communication with the navigation system positioning module 241, the inertial navigation module 242, and the beacon receiver module 243 may be respectively realized through a DSP on-chip peripheral interface UART interface, GNSS/INS position information, attitude information, beacon information, and ephemeris information are acquired, a beam pointing angle and a correction value instruction of the transmitting antenna array 11 or the receiving antenna array 12 are obtained, control and communication with the FPGA are respectively realized through an on-chip SPI interface and an EMIF interface, and control and communication with a channel module may also be realized through an on-chip SPI interface, the channel module mainly realizes up-conversion of an intermediate frequency signal sent by a baseband into a Ka band radio frequency signal of a Ka transmitting antenna array during a transmitting process, and converts the Ka band radio frequency signal of the Ka receiving antenna array into an intermediate frequency signal required by the baseband during a receiving process.
In one embodiment, the control and communication with the transmitting array control board 22 and the receiving array control board 23 can be realized by FPGAs, respectively, for calculating the amplitude and phase values of each sub-array unit corresponding to the transmitting antenna array 11 or the receiving antenna array 12 corresponding to the beam pointing angle according to the beam pointing angle and the correction value instruction, and converting the amplitude and phase values into corresponding control instructions to be distributed to the transmitting array control board 22 or the receiving array control board 23.
The wave control mainboard consists of a first microprocessor and a second microprocessor, receives the instruction of the baseband processor through the first microprocessor, obtains the beam pointing angle and the correction value instruction of the transmitting antenna array surface or the receiving antenna array surface according to the position information, the attitude information, the beacon information and the ephemeris information, and sends the beam pointing angle and the correction value instruction to the second microprocessor, thereby realizing the functions of antenna array surface transceiving control, beam pointing control and the like. The second microprocessor is respectively electrically connected with the transmitting array panel and the receiving array panel, and is used for calculating the amplitude and the phase value of each sub-array unit corresponding to the transmitting antenna array panel or the receiving antenna array panel corresponding to the beam pointing angle according to the beam pointing angle and the correction value instruction, and converting the amplitude and the phase value into corresponding control instructions to be distributed to the transmitting array panel or the receiving array panel. Therefore, the satellite can be tracked and aligned all the time, satellite signals are received, automatic satellite alignment is realized, and multimedia information such as voice, data, dynamic images and the like can be transmitted through the satellite in real time, large capacity and uninterruptedly at any time and any place.
Further, fig. 4 provides a structural schematic diagram of a Ka-band phased array antenna, where the transmit front control board 22 includes a third microprocessor 221, a first frequency conversion module 222, a power distribution module 223, and a multi-channel transmit microprocessor 224, which are electrically connected to each other.
The third microprocessor 221 is electrically connected to the second microprocessor 220, and is configured to receive the beam pointing angle and the modification value instruction, and send a first radio frequency signal corresponding to the beam pointing angle and the modification value instruction to the first frequency conversion module 222.
The first frequency conversion module 222 is configured to perform frequency conversion on the first radio frequency signal to obtain a second radio frequency signal, and send the second radio frequency signal to the power distribution module 223;
a power distribution module 223, configured to distribute the equal power of the second radio frequency signal after frequency conversion to the multi-channel transmitting microprocessor 224;
the multi-channel transmitting microprocessor 224 is electrically connected to the transmitting antenna array 22, and is configured to send the second rf signal with equal power distribution to the transmitting antenna array 22 to be radiated into space after signal processing.
In an embodiment, the third microprocessor may also adopt an FPGA, and may be connected to the second microprocessor 220 through the communication and control interface circuit, and configured to receive the beam pointing angle and the correction value instruction, and send the first radio frequency signal corresponding to the beam pointing angle and the correction value instruction to the first frequency conversion module 222.
In one embodiment, the first frequency conversion module 222 is configured to convert the first rf signal into frequency, and send the frequency converted signal to the power distribution module 223, and the first frequency conversion module may convert the first rf signal with a frequency in a range of 950MHz to 2150MHz into a range of 27.5GHz to 31 GHz.
In one embodiment, the power distribution module 223 may be a transmit sub-array 1 and a 16-array power distribution network, may be integrated on the transmit front control board 22, and may employ a strip-shaped multi-layer board for distributing the equal power of the second rf signal after frequency conversion to the multi-channel transmit microprocessor 224. Optionally, the power divider may have a wider bandwidth, and may be suitable for power dividers of various frequency bands, and in order to ensure that the thickness of the antenna is reduced, the impedance and the wavelength line of the power divider may be appropriately adjusted, and the technical problem that the corresponding wavelength line width is too narrow is avoided.
In one embodiment, the multi-channel transmitting microprocessor 224 is electrically connected to the transmitting antenna array 22, the multi-channel transmitting microprocessor 224 may be a silicon-based multi-channel Tx chip, and is configured to perform signal processing on the second rf signal with equal power distribution, and the specific signal processing process may be to perform phase shifting, attenuation, and power amplification on each channel, output the signal to the transmitting antenna array 22, and radiate the signal to the space through the transmitting antenna array 22.
The transmitting array surface control board of the embodiment comprises a third microprocessor, a first frequency conversion module, a power distribution module and a multi-channel transmitting microprocessor which are electrically connected with each other. First, a first radio frequency signal corresponding to the beam pointing angle and the correction value instruction is sent to a first frequency conversion module by receiving the beam pointing angle and the correction value instruction. Then, the first frequency conversion module performs frequency conversion on the first radio frequency signal to obtain a second radio frequency signal, and the second radio frequency signal is sent to the power distribution module. Then, the power distribution module is used for distributing the equal power of the second radio-frequency signal after the frequency conversion to the multi-channel emission microprocessor; and finally, the multi-channel transmitting microprocessor is used for processing the second radio-frequency signals with equal power distribution and transmitting the second radio-frequency signals to a transmitting antenna array surface to radiate the second radio-frequency signals into space. Therefore, the functions of power distribution, attenuation and phase shift of the radio frequency signal, power amplification, dual-polarization reconfigurable transmission and the like can be realized.
Optionally, fig. 5 provides a schematic structural diagram of a Ka-band phased array antenna, where the receive front control board 23 includes a fourth microprocessor 231, a second frequency conversion module 232, a power synthesis module 233, and a multi-channel receive microprocessor 234, which are electrically connected to each other;
the multi-channel receiving microprocessor 234 is electrically connected to the receiving antenna array 23, and is configured to receive a third radio frequency signal received by the receiving antenna array 23, process the third radio frequency signal, and send the third radio frequency signal to the power combining module 233;
the power synthesis module 233 performs power synthesis on the received third radio frequency signal to obtain a radio frequency signal corresponding to the beam;
the second frequency conversion module 232 is configured to perform frequency conversion on the radio frequency signal corresponding to the beam to obtain a fourth radio frequency signal, and send the fourth radio frequency signal to the fourth microprocessor 231;
the fourth microprocessor 231 is electrically connected to the second microprocessor 220 for transmitting the fourth rf signal to the second microprocessor 220.
In one embodiment, the multi-channel transmitting microprocessor 234 is electrically connected to the receiving antenna array 23, the multi-channel transmitting microprocessor 234 may be a silicon-based multi-channel Rx chip, and is configured to receive a third rf signal received by the receiving antenna array 23, and after the third rf signal is subjected to signal processing, the specific signal processing process may be to perform phase shifting, attenuation, and power amplification on each channel, and then send the phase shifted, attenuated, and power amplified signal to the power combining module 233.
In one embodiment, the power combining module 223 may be two 48-in-1 receiving sub-array power combining networks, may be integrated on the receiving front control board 23, and may adopt a strip-shaped multi-layer board for performing power combining on the third rf signal to obtain the rf signal corresponding to the beam. Optionally, the power divider may have a wider bandwidth, and may be suitable for power dividers of various frequency bands, and in order to ensure that the thickness of the antenna is reduced, the impedance and the wavelength line of the power divider may be appropriately adjusted, and the technical problem that the corresponding wavelength line width is too narrow is avoided.
In an embodiment, the second frequency conversion module 232 is configured to perform frequency conversion on the radio frequency signal corresponding to the beam to obtain a fourth radio frequency signal, and send the fourth radio frequency signal to the fourth microprocessor 231, and the second frequency conversion module may convert the radio frequency signal corresponding to the beam with the frequency in the range of 27.5GHz-31GHz into the fourth radio frequency signal in the range of 950MHz-2150 MHz.
In one embodiment, the fourth microprocessor may also be an FPGA, and may be connected to the second microprocessor 220 through the communication and control interface circuit, so as to send the fourth rf signal to the second microprocessor 220.
The transmitting array surface control board of the embodiment comprises a fourth microprocessor, a second frequency conversion module, a power distribution module and a multi-channel transmitting microprocessor which are electrically connected with each other. Firstly, a third radio frequency signal received by a receiving antenna array surface is sent to a power synthesis module after being processed by a signal processing; then, power synthesis is carried out on the received third radio frequency signal through a power synthesis module to obtain a radio frequency signal corresponding to the wave beam; then, the second frequency conversion module is used for carrying out frequency conversion on the radio frequency signals corresponding to the wave beams to obtain fourth radio frequency signals, and the fourth radio frequency signals are sent to a fourth microprocessor; and finally, the fourth microprocessor is electrically connected with the second microprocessor through the fourth microprocessor and used for sending the fourth radio frequency signal to the second microprocessor. Therefore, the functions of left/right rotation polarization duplex reception of wave beams of radio frequency signals, low noise amplification, phase shift and attenuation, power synthesis in subarrays and the like can be realized.
Further, fig. 6 provides a schematic structural diagram of a Ka-band phased array antenna, where the Ka-band phased array antenna includes a plurality of Ka transmit array units 110 generating circularly polarized radiation, and each Ka transmit array unit is a double-fed microstrip antenna.
Specifically, the Ka transmit array unit 110 may adopt an 8 × 8 sub-array for scalable design, and 16 sub-arrays in total are assembled into a full array unit of 1024 array elements, and in order to achieve better circular polarization and ensure symmetry of scanning, a small sub-array is formed by rotating the unit by 0 °, 90 °, 180 °, and 270 °.
Optionally, the microstrip antenna has the characteristics of simple structure, low profile and easy realization of circular polarization, and the double-fed microstrip antenna can be selected as the array unit. The antenna can also be designed into a dual-polarized antenna, and the left/right hand circular polarization switching is realized by feeding signals with equal amplitude and a phase difference of +/-90 degrees into two feeding ports of the antenna. The antenna form adopts a single-layer microstrip patch antenna, and the feed form adopts double-probe feed realized in the form of a metallized through hole. To achieve good circular polarization characteristics, it is necessary that the two ports have the same radiation characteristics, and thus the feed structure of the antenna may be required to have symmetry.
Further, fig. 7 provides a seventh structural schematic diagram of a Ka-band phased array antenna, where the Ka-antenna receiving array 12 includes a plurality of Ka receiving array units 120 for generating circularly polarized radiation, each Ka receiving array unit is a double-fed microstrip antenna and includes a 90-degree bridge as a feed network.
Specifically, the Ka receiving array unit 120 may adopt an 8 × 8 sub-array for scalable design, and the total of 48 sub-arrays is assembled into 3072 units, and in order to achieve better circular polarization and ensure symmetry of scanning, the small sub-arrays formed by rotating the units by 0 °, 90 °, 180 °, and 270 ° are used as a basis to achieve the 8 × 8 sub-array and the whole array. Alternatively, a double-fed microstrip antenna may be selected as the array element. It is also possible to add a 90 ° bridge to the transmitting antenna unit as a feed network. And realizing left/right circular polarization duplexing. The antenna form can adopt a single-layer microstrip patch antenna, the feed form adopts double-probe feed, and the feed is realized in a metallized through hole form. The bridge feed net is realized by adopting a strip line form, and the whole structure is realized by a 4-layer PCB process.
Fig. 8 provides an eighth schematic structural diagram of a Ka-band phased array antenna, where the Ka-band phased array antenna may be connected between the Ka-antenna transmitting array 11 and the Ka-antenna receiving array 12 through hinges, screws, and the like, and the deployed state of the Ka-antenna transmitting array may be as shown in fig. 8, and the Ka-band phased array antenna may also be folded, so as to reduce the size and increase the use space.
Further, fig. 9 provides a schematic structural diagram nine of a Ka-band phased array antenna, where a plurality of low-frequency pin header connectors 50 are disposed between the antenna array surface layer 10, the Ka-band phased array antenna wave control system layer 20, and the power supply layer 40, and the low-frequency pin header connectors 50 are used for transmitting power supply signals and control signals; a plurality of radio frequency connectors 60 are arranged between the antenna array surface layer 10 and the Ka-band phased array antenna wave control system layer 20, and the radio frequency connectors are used for transmitting radio frequency signals.
Specifically, the antenna array surface layer 10 is connected to the Ka-band phased array antenna wave control system layer 20 and the power supply layer 40 by adopting the low-frequency pin header connector 50, so that vertical interconnection is realized, cables, connectors, screws, structural members and the like occupying large space and weight in the traditional antenna are replaced, and the size and the weight of a product are reduced.
Optionally, the antenna array surface layer 10 may adopt an SMP-J radio frequency connector as a radio frequency output, the SMP-J radio frequency connector is attached to the bottom of the printed board, and the middle of the SMP-J radio frequency connector is connected to the Ka-band phased array antenna wave control system layer 20 through an SMP-kk radio frequency connector and used for transmitting radio frequency signals.
Further, fig. 10 provides a schematic structural diagram of a Ka-band phased array antenna, where the Ka-band phased array antenna wave control system layer 20 includes a multimode modem module 25, and the multimode modem module 25 is configured to adapt to select different high-low orbit constellations for communication.
Specifically, the multimode modem module 25 may perform demodulation adaptation on the radio frequency signals with the same frequency according to different demodulation modes, and may further select different high-low orbit constellations, that is, different constellations may correspond to different modulation and demodulation modes. For example, the constellation may be asian 9 satellite or asian 6 satellite, and the like, and the modulation and demodulation mode may be a trellis-coded modulation and demodulation technique or a non-constant envelope modulation and demodulation technique, and may be set according to the actual situation.
Example two
An embodiment provides a Ka band phased array antenna terminal, including the Ka band phased array antenna described in any of the foregoing embodiments, further including: the satellite communication terminal placing box comprises a satellite communication terminal placing box body, a portable power supply and a sucker.
Specifically, the Ka band phased array antenna terminal includes the Ka band phased array antenna 100 according to any one of the foregoing embodiments, and further includes: satellite communication terminal places the case, and this satellite communication terminal places the case and can satisfy the individual soldier and carry, can the push-and-pull use, and this portable power source can adopt lithium cell and rechargeable battery, the outdoor use of being convenient for. The sucker can be matched with a sucker bayonet arranged at the bottom of a Ka frequency band phased array antenna terminal for use.
The Ka-band phased array antenna terminal provided by the embodiment is applied to a scene of vehicle-mounted communication, the terminal can be installed in a manner of placing a powerful sucker on a vehicle roof, a sucker with a corresponding size needs to be selected according to product form and weight, for example, a sucker with a diameter of 11cm is selected, and a diameter of an internal cavity is about 9 cm. Assuming that the internal pressure is drawn to 1/4 of the external pressure, 96 kilograms of force are required to pull the suction cup apart. The bottom of the terminal product can be provided with a sucker butt joint bayonet, and the sucker can be mounted at any time and is convenient to dismount. When in vehicle-mounted mode, the sucker is added and is directly sucked on the vehicle roof.
The Ka frequency band phased array antenna terminal that this embodiment provided uses under the scene of individual portable use, can get away behind the sucking disc, just portable terminal, and this terminal size is little, and under fold condition, it is little to possess occupation space, light in weight's advantage. Can be carried by a single person to any area accessible to humans.
The Ka band phased array antenna terminal provided in this embodiment two includes the Ka band phased array antenna described in any of the foregoing embodiments, and further includes: the satellite communication terminal placing box comprises a satellite communication terminal placing box body, a portable power supply and a sucker. Not only can realize that the individual soldier conveniently carries, as independent satellite communication terminal, realize the intercommunication communication interconnection in quiet, can also adsorb on the vehicle through the sucking disc, realize on-vehicle communication interconnection in moving for can use and light small and exquisite satellite communication terminal in many scenes.
In the description of the present invention, the terms "first", "second", "third", and the like are used only for distinguishing the description, and are not intended to indicate or imply relative importance.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A Ka band phased array antenna, comprising: the antenna array comprises an antenna array surface layer, a Ka frequency band phased array antenna wave control system layer, a heat dissipation system layer and a power supply layer, wherein the antenna array surface layer, the Ka frequency band phased array antenna wave control system layer, the heat dissipation system layer and the power supply layer are electrically connected with each other and can be folded or unfolded;
the antenna array surface layer comprises a Ka antenna transmitting array surface and a Ka antenna receiving array surface which is separated from the Ka antenna transmitting array surface by a preset distance, and the separation distance can enable the Ka antenna transmitting array surface and the Ka antenna receiving array surface to be folded or unfolded;
the Ka-band phased array antenna wave control system layer comprises a wave control main board, a transmitting array panel, a receiving array panel and a satellite information acquisition module which are electrically connected with each other, wherein the transmitting array panel and the receiving array panel are respectively coupled with the transmitting array of the Ka antenna and the receiving array of the Ka antenna, the satellite information acquisition module is used for acquiring position information, attitude information, beacon information and ephemeris information, the wave control main board is used for processing the position information, the attitude information and the beacon information to realize resolving of a beam pointing angle, generating a control instruction of the beam and respectively sending the control instruction to the transmitting array panel and the receiving array panel so that the transmitting array panel is used for adjusting the amplitude and the phase of the transmitting array of the Ka antenna according to the control instruction, the receiving array surface control board is used for adjusting the amplitude and the phase of the receiving array surface of the Ka antenna according to the control instruction;
the radiating system layer comprises two radiating cavities and radiating components, wherein the two radiating cavities can respectively accommodate the antenna array surface layer and the Ka frequency band phased array antenna wave control system layer;
the power supply layer comprises a plurality of power supply sub-circuits which are used for respectively providing power for the antenna array surface layer, the Ka frequency band phased array antenna wave control system layer and the heat dissipation system layer.
2. The Ka-band phased array antenna according to claim 1, wherein the satellite information collection module comprises at least a navigation system positioning module, an inertial navigation module, and a beacon receiver module, wherein the navigation system positioning module is configured to collect position information, the inertial navigation module is configured to collect attitude information, and the beacon receiver module is configured to collect beacon information and ephemeris information including satellite orbits.
3. The Ka-band phased array antenna according to claim 2, wherein the wave-controlled motherboard comprises a first microprocessor and a second microprocessor electrically connected to each other, the first microprocessor is electrically connected to the navigation system positioning module, the inertial navigation module, and the beacon receiver module, respectively, and is configured to receive a baseband processor instruction, and obtain a beam pointing angle and a correction value instruction of the transmitting antenna array or the receiving antenna array according to the position information, the attitude information, the beacon information, and the ephemeris information, and send the obtained beam pointing angle and correction value instruction to the second microprocessor; the second microprocessor is respectively electrically connected with the transmitting array surface control board and the receiving array surface control board, and is used for calculating the amplitude and the phase value of each sub-array unit corresponding to the transmitting antenna array surface or the receiving antenna array surface corresponding to the beam pointing angle according to the beam pointing angle and the correction value instruction, converting the amplitude and the phase value into corresponding control instructions and distributing the control instructions to the transmitting array surface control board or the receiving array surface control board.
4. The Ka band phased array antenna according to claim 3, wherein the transmit front control board comprises a third microprocessor, a first frequency conversion module, a power distribution module and a multi-channel transmit microprocessor which are electrically connected with each other;
the third microprocessor is electrically connected with the second microprocessor and is used for receiving the beam pointing angle and the correction value instruction and sending a first radio frequency signal corresponding to the beam pointing angle and the correction value instruction to the first frequency conversion module;
the first frequency conversion module is configured to perform frequency conversion on the first radio frequency signal to obtain a second radio frequency signal, and send the second radio frequency signal to the power distribution module;
the power distribution module is used for distributing the second radio frequency signal to the multi-channel transmitting microprocessor in an equal power mode;
and the multi-channel transmitting microprocessor is electrically connected with the transmitting antenna array surface and is used for transmitting the second radio-frequency signals distributed with equal power to the transmitting antenna array surface to radiate the second radio-frequency signals into space after signal processing.
5. The Ka-band phased array antenna according to claim 3, wherein the reception front control board comprises a fourth microprocessor, a second frequency conversion module, a power synthesis module and a multi-channel reception microprocessor which are electrically connected with each other;
the multichannel receiving microprocessor is electrically connected with the receiving antenna array surface and is used for receiving a second radio frequency signal received by the receiving antenna array surface, processing the second radio frequency signal and sending the second radio frequency signal to the power synthesis module;
the power synthesis module is used for performing power synthesis on the received second radio frequency signal and converting the second radio frequency signal into a radio frequency signal corresponding to the wave beam;
the second frequency conversion module is configured to perform frequency conversion on the radio frequency signal corresponding to the beam to obtain a fourth radio frequency signal, and send the fourth radio frequency signal to the fourth microprocessor;
and the fourth microprocessor is electrically connected with the second microprocessor and is used for sending the fourth radio frequency signal to the second microprocessor.
6. The Ka-band phased array antenna of claim 1, wherein the Ka-antenna transmit front comprises a plurality of Ka-transmit array elements that generate circularly polarized radiation, each of the Ka-transmit array elements being a dual-feed microstrip antenna.
7. The Ka-band phased array antenna according to claim 1, wherein the Ka-antenna receiving array comprises a plurality of Ka-receiving array elements for generating circularly polarized radiation, each Ka-receiving array element is a double-fed microstrip antenna and comprises a 90-degree bridge as a feed network.
8. The Ka-band phased array antenna according to claim 1, wherein a plurality of low frequency pin header connectors are arranged between the antenna array surface layer, the Ka-band phased array antenna wave control system layer and the power supply layer, and the low frequency pin header connectors are used for transmitting power supply signals and control signals; and a plurality of radio frequency connectors are also arranged between the antenna array surface layer and the Ka frequency band phased array antenna wave control system layer, and the radio frequency connectors are used for transmitting radio frequency signals.
9. The Ka-band phased array antenna according to claim 1, wherein the Ka-band phased array antenna wave control system layer further comprises a multimode modem module electrically connected to the wave control motherboard, and the multimode modem module is configured to adapt to select different high-low orbit constellations for communication.
10. A Ka-band phased array antenna terminal, comprising the Ka-band phased array antenna according to any one of claims 1 to 9, further comprising: satellite communication terminal places case, portable power and sucking disc.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111275949.9A CN114374073A (en) | 2021-10-29 | 2021-10-29 | Ka frequency range phased array antenna and terminal |
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| CN202111275949.9A CN114374073A (en) | 2021-10-29 | 2021-10-29 | Ka frequency range phased array antenna and terminal |
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| CN114374073A true CN114374073A (en) | 2022-04-19 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115037361A (en) * | 2022-08-11 | 2022-09-09 | 凯睿星通信息科技(南京)股份有限公司 | Ultra-light satellite portable station |
| CN117080745A (en) * | 2023-10-18 | 2023-11-17 | 成都天锐星通科技有限公司 | Integrated phased array antenna system and phased array antenna terminal |
-
2021
- 2021-10-29 CN CN202111275949.9A patent/CN114374073A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115037361A (en) * | 2022-08-11 | 2022-09-09 | 凯睿星通信息科技(南京)股份有限公司 | Ultra-light satellite portable station |
| CN115037361B (en) * | 2022-08-11 | 2022-11-25 | 凯睿星通信息科技(南京)股份有限公司 | Ultra-light satellite portable station |
| CN117080745A (en) * | 2023-10-18 | 2023-11-17 | 成都天锐星通科技有限公司 | Integrated phased array antenna system and phased array antenna terminal |
| CN117080745B (en) * | 2023-10-18 | 2024-01-19 | 成都天锐星通科技有限公司 | Integrated phased array antenna system and phased array antenna terminal |
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