Civil aviation airborne phased array antenna

Abstract

The invention belongs to the technical field of satellite communication antennas, and particularly relates to a civil aviation airborne phased-array antenna. According to the technical scheme, the civil aviation airborne phased-array antenna comprises a main carrier, a distributed lower carrier and a shielding cover plate which are sequentially arranged from top to bottom, a plurality of transmitting upper carrier plates and a plurality of receiving upper carrier plates are installed in the main carrier, and a transmitting lower carrier plate, a controller and a receiving lower carrier plate are installed between the distributed lower carrier and the shielding cover plate. The invention provides a civil aviation airborne phased-array antenna to reduce electromagnetic interference between devices, facilitate heat dissipation of the devices and reduce the vibration magnitude of a printed board.

Description

Technical Field

[0001] The invention belongs to the technical field of satellite communication antennas, and in particular relates to a civil aviation airborne phased array antenna. Background Art

[0002] With the rapid development of technology, satellite communication antennas have evolved from traditional mechanical scanning antennas to low-profile one-dimensional phased scanning antennas, and then to the current two-dimensional active phased array antennas, and their technical performance has been greatly improved. Phased array antennas use solid-state electronic components to achieve beam scanning, and have the advantages of fast scanning speed, low profile, and light weight. However, due to their high prices and complex production processes, they have been mainly used in the military field for many years, which has restricted their promotion and application in the civil aviation field. At present, the satellite communication antennas on civil airliners are still mainly mature mechanical scanning antennas.

[0003] In recent years, many domestic satellite communication companies have emerged and are actively developing low-cost flat-panel phased array antennas. Through high-density integrated flat-panel architecture and low-cost silicon-based chips, they have achieved standardized and scalable sub-arrays, which are easy to produce and process, thereby reducing the cost of the entire machine.

[0004] However, since this architecture integrates antenna arrays, RF chips, digital circuits, and power circuits in a high-density manner through a multi-layer printed circuit board, the following problems exist: First, the devices are densely distributed and easily interfere with each other. Whether it is the digital circuit and the RF channel, or the transmitting / receiving components, there are serious electromagnetic interference problems; second, the antenna power consumption is large, the heating devices are densely arranged, and the ultra-thin flat structure makes heat dissipation difficult; third, the thickness of the printed circuit board is thin, and the vibration level of high-weight devices attached to the printed circuit board is easily amplified. The ultra-thin flat structure of the whole machine will further amplify the vibration level of the printed circuit board, which greatly reduces the reliability of the antenna under vibration conditions, and even causes problems such as device shedding and damage. These problems also make the environmental adaptability of flat-panel phased array antennas more difficult to solve than traditional brick-type and tile-type phased array antennas. At present, preliminary explorations have been carried out mainly in the field of vehicles and drones, and have not yet been applied on a large scale. Summary of the invention

[0005] In order to solve the above problems existing in the prior art, the purpose of the present invention is to provide a civil aviation airborne phased array antenna to reduce electromagnetic interference between devices, facilitate device heat dissipation, and reduce the vibration level of the printed circuit board.

[0006] The technical solution adopted by the present invention is: A civil aviation airborne phased array antenna comprises a main carrier, a distributed download body and a shielding cover plate arranged in sequence from top to bottom, wherein a plurality of transmitting upload boards and a plurality of receiving upload boards are respectively installed in the main carrier, and a transmitting download board, a controller and a receiving download board are respectively installed between the distributed download body and the shielding cover plate.

[0007] The phased array antenna of the present invention adopts the AIP architecture in the physical architecture design, and divides the antenna into a transmitting antenna, a receiving antenna and a controller. This architecture integrates digital, analog and radio frequency circuits with high density, reduces the types and number of circuit boards, facilitates production and processing, and reduces costs. At the same time, the receiving antenna and the transmitting antenna adopt a separate design, which ensures the high isolation of the transmitting and receiving antennas, and can minimize the interference of the transmitting antenna to the receiving antenna when it is working.

[0008] The phased array antenna of the present invention adopts a three-layer design combining a main carrier, a distributed download carrier and a shielding cover plate in terms of structural design, and adopts a laminated structure installation connection form. The main distributed download carrier separates the upper upload board functional area and the download board functional area, and the antenna array surface with concentrated device distribution and high heat consumption is placed in the upper upload board functional area, and the printed circuit board components with digital functions such as power supply and low frequency are placed in the download board functional area, which can ensure good heat dissipation.

[0009] The three-layer structure consisting of the main carrier, distributed carrier and shielding cover can achieve physical isolation between the transmitting upload board and the transmitting download board, and the receiving upload board and the receiving download board, further avoiding signal interference and improving the electromagnetic compatibility of the antenna. The application of the shielding cover further enhances the anti-interference ability, ensures the stable operation of the antenna in a complex electromagnetic environment, and improves the reliability of the system.

[0010] The present invention divides the antenna into a transmitting antenna, a receiving antenna and a controller, and isolates the transmitting upload board and the transmitting download board, the receiving upload board and the receiving download board through a three-layer structure consisting of a main carrier, a distributed download carrier and a shielding cover plate. The area of ​​a single printed circuit board is reduced, and the vibration resistance requirements of the airborne platform can be met.

[0011] The present invention realizes high integration of digital, analog and radio frequency circuits through the AIP architecture, reduces the types of circuit boards, simplifies the production process, and facilitates maintenance and upgrading by modularization, and gives the antenna good scalability.

[0012] The circuit board of the present invention has low profile and light weight characteristics, meeting the strict requirements of the airborne platform on the volume and weight of the equipment. The laminated structure and functional partition design further optimize the space utilization and make the antenna more compact.

[0013] The present invention reduces the production cost of antenna mass production and improves production efficiency by reducing the types of circuit boards. The modular design also makes maintenance and replacement of components more convenient.

[0014] As a preferred solution of the present invention, the distributed download body includes a front metal plate and a rear metal plate, a front metal lower cavity is provided at the lower side of the front metal plate, the transmitting download board is installed in the front metal lower cavity, a rear metal lower cavity is provided at the lower side of the rear metal plate, and the controller and the receiving download board are installed in the rear metal lower cavity.

[0015] As a preferred solution of the present invention, the shielding cover plate includes a front shielding cover plate and a rear shielding cover plate, the front shielding cover plate is provided with a front groove corresponding to the front metal lower cavity, and the rear shielding cover plate is provided with a rear groove corresponding to the rear metal lower cavity.

[0016] As a preferred embodiment of the present invention, the transmitting download board and the receiving download board both include a channel circuit for transmitting radio frequency signals and a control circuit for transmitting digital signals. The channel circuit and the control circuit are arranged at diagonal positions of the transmitting download board or the receiving download board to reduce electromagnetic interference problems such as signal crosstalk caused by devices in the control circuit represented by the crystal oscillator frequency source to the radio frequency part.

[0017] As a preferred solution of the present invention, the channel circuit is covered with a channel cover plate, and the control circuit is covered with a control cover plate. The peripheries of the channel cover plate and the control cover plate are both provided with a plurality of shielding holes to achieve second-level physical shielding.

[0018] As a preferred solution of the present invention, a heat dissipation channel is provided between the main carrier and the distributed lower carrier, and the heat dissipation channel runs through the bow and stern along the sailing direction to achieve efficient forced heat dissipation through the flying airflow.

[0019] As a preferred solution of the present invention, the mating surfaces of the main carrier and the distributed lower carrier are both provided with heat dissipation teeth, and the heat dissipation teeth are located in the heat dissipation channel.

[0020] As a preferred solution of the present invention, the transmitting upload board integrates a driving amplifier circuit, a T component, a radiation array, a three-level beam control circuit and a two-level power supply circuit; the transmitting download board integrates a first-level power supply circuit, a transmitting channel circuit and a two-level beam control circuit.

[0021] As a preferred solution of the present invention, the receiving upload board integrates the radiation array, R component, low noise amplifier circuit, three-level beam control circuit and two-level power supply circuit; the receiving download board integrates the first-level power supply circuit, receiving channel circuit and two-level beam control circuit.

[0022] As a preferred solution of the present invention, the controller integrates a primary power supply circuit and a primary beam control circuit.

[0023] The beneficial effects of the present invention are: 1. The phased array antenna of the present invention is divided into a transmitting antenna, a receiving antenna and a controller in terms of physical architecture design. This architecture integrates digital, analog and radio frequency circuits with high density, reduces the types and number of circuit boards, facilitates production and processing, and reduces costs. At the same time, the receiving antenna and the transmitting antenna are separated, ensuring high isolation between the transmitting and receiving antennas, and the transmitting antenna can minimize interference with the receiving antenna when working.

[0024] The three-layer structure consisting of the main carrier, distributed carrier and shielding cover can achieve physical isolation between the transmitting upload board and the transmitting download board, and the receiving upload board and the receiving download board, further avoiding signal interference and improving the electromagnetic compatibility of the antenna. The application of the shielding cover further enhances the anti-interference ability, ensures the stable operation of the antenna in a complex electromagnetic environment, and improves the reliability of the system.

[0025] 2. The present invention divides the antenna into a transmitting antenna, a receiving antenna and a controller in terms of physical architecture design, and adopts a three-layer design combining a main carrier, a distributed download carrier and a shielding cover plate in terms of structural design, and adopts a laminated structure installation connection form. The main distributed download carrier separates the upper upload board functional area and the download board functional area, and places the antenna array with concentrated device distribution and high heat consumption in the upper upload board functional area, and places the printed circuit board components with digital functions such as power supply and low frequency in the download board functional area, which can ensure good heat dissipation.

[0026] 3. The present invention divides the antenna into a transmitting antenna, a receiving antenna and a controller, and isolates the transmitting upper board and the transmitting lower board, the receiving upper board and the receiving lower board through a three-layer structure consisting of a main carrier, a distributed lower carrier and a shielding cover plate. The area of ​​a single printed circuit board is reduced, which can meet the vibration resistance requirements of the airborne platform. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is an exploded view of the present invention; Figure 2 is a top view of the present invention; Figure 3 It is a left side view of the present invention; Figure 4 It is a schematic diagram of the printed circuit board layout of the transmitting download board or the receiving download board; Figure 5 It is a schematic diagram of the printed circuit board shielding structure of the transmitting download board or the receiving download board; Figure 6 is a schematic diagram of the physical structure of the antenna of the present invention; Figure 7 It is a schematic diagram of the architecture of the launcher board; Figure 8 This is the architecture diagram of the launch download board; Fig. 9It is a schematic diagram of the architecture of the receiving upload board; Fig.10 This is a schematic diagram of the architecture of the receiving download board; Fig.11 This is a schematic diagram of the controller architecture.

[0028] In the figure: 1-main carrier; 2-distributed lower carrier; 3-shielding cover; 4-transmitting upload board; 5-receiving upload board; 6-transmitting download board; 7-controller; 8-receiving download board; 11-air inlet; 21-front metal plate; 22-rear metal plate; 23-front metal lower cavity; 24-rear metal lower cavity; 31-front shielding cover; 32-rear shielding cover; 91-channel cover; 92-control cover; 93-shielding hole. DETAILED DESCRIPTION

[0029] In order to make the purpose, 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 in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.

[0031] like Figure 1 to Figure 3 As shown, the civil aviation airborne phased array antenna of this embodiment includes a main carrier 1, a distributed download body 2 and a shielding cover plate 3 arranged in sequence from top to bottom, a plurality of transmitting upload boards 4 and a plurality of receiving upload boards 5 are respectively installed in the main carrier 1, and a transmitting download board 6, a controller 7 and a receiving download board 8 are respectively installed between the distributed download body 2 and the shielding cover plate 3.

[0032] like Figure 6 As shown, the phased array antenna of the present invention adopts the AIP architecture in the physical architecture design, and the antenna is divided into a transmitting antenna, a receiving antenna and a controller 7. This architecture integrates digital, analog and radio frequency circuits with high density, reduces the types and number of circuit boards, facilitates production and processing, and reduces costs. At the same time, the receiving antenna and the transmitting antenna adopt a separate design, which ensures the high isolation of the transmitting and receiving antennas, and can minimize the interference of the transmitting antenna to the receiving antenna when it is working.

[0033] The phased array antenna of the present invention adopts a three-layer design combining a main carrier 1, a distributed download carrier 2 and a shielding cover plate 3 in terms of structural design, and adopts a laminated structure installation connection form. The main distributed download carrier 2 separates the upper upload board functional area and the download board functional area, and the antenna array surface with concentrated device distribution and high heat consumption is placed in the upper upload board functional area, and the printed circuit board components with digital functions such as power supply and low frequency are placed in the download board functional area, which can ensure good heat dissipation.

[0034] The three-layer structure consisting of the main carrier 1, the distributed carrier 2 and the shielding cover 3 can achieve physical isolation of the transmitting upload board 4 and the transmitting download board 6, and the receiving upload board 5 and the receiving download board 8, further avoiding signal interference and improving the electromagnetic compatibility of the antenna. The application of the shielding cover 3 further enhances the anti-interference ability, ensures the stable operation of the antenna in a complex electromagnetic environment, and improves the reliability of the system.

[0035] The present invention divides the antenna into a transmitting antenna, a receiving antenna and a controller 7, and isolates the transmitting upper board 4 and the transmitting download board 6, the receiving upper board 5 and the receiving download board 8 through a three-layer structure consisting of a main carrier 1, a distributed lower carrier 2 and a shielding cover plate 3. The area of ​​a single printed circuit board is reduced, which can meet the vibration resistance requirements of the airborne platform.

[0036] The present invention realizes high integration of digital, analog and radio frequency circuits through the AIP architecture, reduces the types of circuit boards, simplifies the production process, and facilitates maintenance and upgrading by modularization, and gives the antenna good scalability.

[0037] The circuit board of the present invention has low profile and light weight characteristics, meeting the strict requirements of the airborne platform on the volume and weight of the equipment. The laminated structure and functional partition design further optimize the space utilization and make the antenna more compact.

[0038] The present invention reduces the production cost of antenna mass production and improves production efficiency by reducing the types of circuit boards. The modular design also makes maintenance and replacement of components more convenient.

[0039] As a preferred embodiment of the present invention, the distributed download carrier 2 includes a front metal plate 21 and a rear metal plate 22, a front metal lower cavity 23 is provided at the lower side of the front metal plate 21, a transmitting download board 6 is installed in the front metal lower cavity 23, a rear metal lower cavity 24 is provided at the lower side of the rear metal plate 22, and a controller 7 and a receiving download board 8 are installed in the rear metal lower cavity 24.

[0040] Specifically, the shielding cover plate 3 includes a front shielding cover plate 31 and a rear shielding cover plate 32 . The front shielding cover plate 31 is provided with a front groove corresponding to the front metal lower cavity 23 , and the rear shielding cover plate 32 is provided with a rear groove corresponding to the rear metal lower cavity 24 .

[0041] like Figure 4 and Figure 5 As shown, the transmitting download board 6 and the receiving download board 8 both include a channel circuit for transmitting radio frequency signals and a control circuit for transmitting digital signals. The channel circuit and the control circuit are arranged at diagonal positions of the transmitting download board 6 or the receiving download board 8 to reduce electromagnetic interference problems such as signal crosstalk caused by devices represented by the crystal oscillator frequency source in the control circuit to the radio frequency part.

[0042] The channel circuit is covered with a channel cover plate 91, and the control circuit is covered with a control cover plate 92. The peripheries of the channel cover plate 91 and the control cover plate 92 are both provided with a plurality of shielding holes 93 to achieve the second level of physical shielding.

[0043] Furthermore, a heat dissipation channel is provided between the main carrier 1 and the distributed lower carrier 2, and the heat dissipation channel runs through the bow and stern along the sailing direction, and realizes efficient forced heat dissipation through the flying airflow. Air inlets 11 are provided on both the front and rear sides of the main carrier.

[0044] The mating surfaces of the main carrier 1 and the distributed lower carrier 2 are both provided with heat dissipation teeth, and the heat dissipation teeth are located in the heat dissipation channel.

[0045] Specifically, Figure 7 and Figure 8 As shown, the transmitting upload board 4 integrates a driving amplifier circuit, a T component, a radiation array, a three-level beam control circuit and a two-level power supply circuit; the transmitting download board 6 integrates a first-level power supply circuit, a transmitting channel circuit and a second-level beam control circuit.

[0046] like Fig. 9 and Fig.10 As shown, the receiving upload board 5 integrates the radiation array, R component, low noise amplifier circuit, three-level beam control circuit and two-level power supply circuit; the receiving download board 8 integrates the first-level power supply circuit, receiving channel circuit and two-level beam control circuit.

[0047] like Fig.11 As shown, the controller 7 integrates a primary power supply circuit and a primary beam control circuit.

[0048] Example: 1. Physical architecture design: like Figure 6 As shown, the physical architecture of the antenna of this embodiment adopts the AIP architecture, which integrates digital, analog, and radio frequency circuits and has the advantages of low profile and light weight. Specifically, the architecture of the antenna consists of three parts: a transmitting antenna, a receiving antenna, and a controller 7.

[0049] (1) Transmitting antenna The transmitting antenna is composed of N transmitting upload boards 4 and one transmitting download board 6.

[0050] like Figure 7 As shown, each transmitting upload board 4 integrates the final stage driving amplifier circuit, T component, radiation array, three-stage beam control circuit and two-stage power supply circuit. The main function realized is to perform final stage amplification and phase shift on the RF signal input by the transmitting download board 6, and then radiate it through the antenna array.

[0051] like Figure 8 As shown, the transmitting download board 6 includes a primary power supply circuit, a transmitting channel circuit and a secondary beam control circuit, which mainly provide DC / DC power conversion function, up-conversion and power amplification function from intermediate frequency input to RF output, status reporting and switch control and other functions.

[0052] (2) Receiving antenna The receiving antenna is also composed of N receiving upload boards 5 and one receiving download board 8.

[0053] like Fig. 9 As shown, each receiving upload board 5 is composed of a radiation array, an R component, a low-noise amplifier circuit, a three-level beam control circuit and a two-level power supply circuit. Its function is to perform preliminary amplification processing on the RF signal received by the antenna array, and then transmit it to the receiving download board 8 through the RF connector.

[0054] like Fig.10 As shown, the receiving download board 8 is composed of a primary power supply circuit, a receiving channel circuit and a secondary beam control circuit, and mainly provides DC / DC power conversion function, down-conversion and signal amplification function from RF input to intermediate frequency output, and realizes functions such as status monitoring reporting and switch control.

[0055] (3) Controller like Fig.11 As shown, the controller 7 is mainly composed of a primary power supply circuit and a primary beam control circuit, which mainly realizes the communication between the antenna and the modem. It can realize precise tracking and control of the antenna according to the attitude information provided by the inertial navigation system, complete the control commands of the transmitting and receiving upload and download boards and the issuance of beam pointing commands, and receive the status information of each module in real time.

[0056] This physical architecture has the following advantages through scientific functional partitioning and circuit integration: 1) Efficient layout of multiple functional circuits is achieved on the same carrier board, which reduces the number and types of printed circuit boards, reduces manufacturing costs and product weight, facilitates production and processing, and avoids electromagnetic compatibility issues that may be caused by complex interconnections; 2) The receiving and transmitting antennas adopt a separate design to ensure the isolation of the transmitting and receiving antennas. When the transmitting antenna is working, it can minimize the interference to the receiving antenna. 3) The distributed modular design of the receiving and transmitting antennas gives the antennas good scalability. The functional areas of the upper and lower boards can be flexibly adjusted according to actual needs, such as increasing the number of transmitting or receiving antennas, or increasing or decreasing the sub-array size of the transmitting / receiving antennas, so as to meet the requirements of different performance indicators and application scenarios. This design concept not only improves the adaptability of the system, but also provides convenient conditions for future functional upgrades and performance optimization.

[0057] 2. Structural design: like Figure 1 to Figure 3 As shown, the structure of the antenna adopts a three-layer design combining a main carrier 1, a distributed lower carrier 2 and a shielding cover 3. The main carrier 1 and the distributed lower carrier 2 form the heat dissipation channel of the antenna, and the functional area where the receiving and transmitting upper and lower boards are located is physically isolated, thereby ensuring the electromagnetic compatibility performance of the antenna.

[0058] (1) Main carrier In order to reduce aerodynamic drag during flight, the main carrier 1 has a streamlined design. At the same time, the main carrier 1 is processed and formed using an integrated design, which not only ensures the strength of the structural steel, but also reduces assembly errors and overall processing costs.

[0059] (2) Distributed download The distributed lower carrier 2 mainly includes a front metal plate 21, a front metal lower cavity 23, a rear metal lower cavity 24 and a rear metal plate 22, which respectively bear the installation and fixation and heat dissipation functions of different functional module components of the antenna.

[0060] The distributed carrier 2 isolates the antenna functional area, which reduces the processing difficulty and processing error of the large-area thin plate installation structure, improves the assemblability with the main carrier 1, ensures the installation progress of each component of the antenna, reduces the waste of blank surplus during processing, and further reduces the processing cost. On the other hand, the discrete and modular design makes it easier to disassemble, replace and expand various carriers of the antenna, improving the maintainability and interchangeability of the antenna.

[0061] (3) Shielding design The shielding structure is composed of a front shielding cover plate 31, a rear shielding cover plate 32, and a shielding cover plate 3 of a printed circuit board on a transmitting download board 6 or a receiving download board 8, forming a three-level electromagnetic shielding system for each component of the antenna and the whole from three dimensions of carrier layout, physical shielding of the printed circuit board cover, and physical shielding of structural parts.

[0062] Specifically, if Figure 4As shown, firstly, the digital and RF printed circuit board components are reasonably laid out to realize the first level of digital shielding. The channel circuit part that transmits the RF signal is placed in the upper right corner of the carrier board, and the control circuit part that transmits the digital signal is placed in the lower left corner of the carrier board to reduce electromagnetic interference problems such as signal crosstalk caused by devices represented by the crystal oscillator frequency source in the control circuit to the RF part.

[0063] Secondly, if Figure 5 As shown, a printed circuit board cover is used to cover the digital and radio frequency circuit parts of the corresponding receiving and transmitting uplink and downlink boards, and shielding holes are added on the periphery to achieve the second level of physical shielding.

[0064] Finally, if Figure 1 As shown, the front shielding cover plate 31 and the rear shielding cover plate 32 and the metal lower cavity separate the antenna components and the cable assembly to achieve the third level of physical shielding. Each shielding cover plate 3 structure is provided with a double-layer shielding sealing strip to further enhance the waterproof and electromagnetic shielding performance of each connection part of the antenna.

[0065] (4) Heat dissipation design The heat dissipation channel is the middle part of the main carrier 1 and the distributed lower carrier 2, which runs through the bow and tail along the navigation direction, and realizes efficient forced heat dissipation through the flight airflow. The mating surfaces of the main carrier 1 and the distributed lower carrier 2 are designed with heat dissipation teeth, which are located in the heat dissipation channel.

[0066] The antenna array with higher transmission power is reasonably arranged in the upload board functional area, while the printed circuit board components with digital functions such as power supply and low frequency are concentrated in the download board functional area, which can realize direct heat conduction and improve heat dissipation capacity.

[0067] The high heat consumption components on the printed circuit boards of the upload functional area and the download board functional area are distributed on the side close to the heat dissipation channel, and the heat is dissipated to the metal structural parts of the heat dissipation channel to ensure good heat dissipation of the antenna.

[0068] The three-layer structural design divides the antenna into three parts: the upper board functional area, the main carrier area 1 and the download board functional area, and realizes a compact layout through a stacked installation connection form.

[0069] The heat dissipation channel formed between the main carrier 1 and the distributed lower carrier 2 can effectively achieve heat dissipation management of the upper and lower functional areas. This three-layer structure not only meets the stringent requirements of civil aircraft airborne platforms for environmental adaptability such as heat dissipation and vibration resistance, but also reduces the height and weight of the antenna, further improving the overall performance of the system.

[0070] The present invention is not limited to the above-mentioned optional implementation modes. Anyone can derive other various forms of products under the inspiration of the present invention. However, no matter what changes are made in the shape or structure, all technical solutions that fall within the scope defined by the claims of the present invention fall within the protection scope of the present invention.

Claims

1. A civil aviation airborne phased array antenna, characterized in that: The invention comprises a main carrier (1), a distributed download carrier (2) and a shielding cover plate (3) which are arranged in sequence from top to bottom. A plurality of transmitting upload plates (4) and a plurality of receiving upload plates (5) are respectively installed in the main carrier (1). A transmitting download plate (6), a controller (7) and a receiving download plate (8) are respectively installed between the distributed download carrier (2) and the shielding cover plate (3).

2. The civil aviation airborne phased array antenna according to claim 1, characterized in that: The distributed download carrier (2) comprises a front metal plate (21) and a rear metal plate (22); a front metal lower cavity (23) is provided on the lower side of the front metal plate (21); a transmitting download board (6) is installed in the front metal lower cavity (23); a rear metal lower cavity (24) is provided on the lower side of the rear metal plate (22); and a controller (7) and a receiving download board (8) are installed in the rear metal lower cavity (24).

3. The civil aviation airborne phased array antenna according to claim 2, characterized in that: The shielding cover plate (3) comprises a front shielding cover plate (31) and a rear shielding cover plate (32); the front shielding cover plate (31) is provided with a front groove corresponding to the front metal lower cavity (23); and the rear shielding cover plate (32) is provided with a rear groove corresponding to the rear metal lower cavity (24).

4. The civil aviation airborne phased array antenna according to claim 1, characterized in that: The transmitting download board (6) and the receiving download board (8) both comprise a channel circuit for transmitting radio frequency signals and a control circuit for transmitting digital signals, and the channel circuit and the control circuit are arranged at diagonal positions of the transmitting download board (6) or the receiving download board (8).

5. The civil aviation airborne phased array antenna according to claim 4, characterized in that: The channel circuit is covered with a channel cover plate (91), and the control circuit is covered with a control cover plate (92). The peripheries of the channel cover plate (91) and the control cover plate (92) are both provided with a plurality of shielding holes (93).

6. The civil aviation airborne phased array antenna according to claim 1, characterized in that: A heat dissipation channel is provided between the main carrier (1) and the distributed lower carrier (2), and the heat dissipation channel runs through the bow and stern along the sailing direction.

7. The civil aviation airborne phased array antenna according to claim 6, characterized in that: The mating surfaces of the main carrier (1) and the distributed lower carrier (2) are both provided with heat dissipation teeth, and the heat dissipation teeth are located in the heat dissipation channel.

8. The civil aviation airborne phased array antenna according to claim 1, characterized in that: The transmitting upload board (4) integrates a driving amplifier circuit, a T component, a radiation array, a three-level beam control circuit and a two-level power supply circuit; the transmitting download board (6) integrates a first-level power supply circuit, a transmitting channel circuit and a two-level beam control circuit.

9. The civil aviation airborne phased array antenna according to claim 1, characterized in that: The receiving upload board (5) integrates a radiation array, an R component, a low noise amplifier circuit, a three-level beam control circuit and a two-level power supply circuit; the receiving download board (8) integrates a first-level power supply circuit, a receiving channel circuit and a two-level beam control circuit.

10. The civil aviation airborne phased array antenna according to claim 1, characterized in that: The controller (7) integrates a primary power supply circuit and a primary beam control circuit.

Images