Cylindrical phased-array antenna

Abstract

The utility model discloses a cylindrical phased-array antenna, which comprises a cylindrical fixing frame, and the circumferential outer wall of the fixing frame is fixedly connected with a plurality of uniformly distributed transmitting waveguide slot antennas. A plurality of receiving waveguide slot antennas are fixedly connected to the position, located below the transmitting waveguide slot antennas, of the circumferential outer wall of the fixing frame, the transmitting waveguide slot antennas and the receiving waveguide slot antennas are distributed in an annular array, and a wave controller is fixedly connected to the top of the fixing frame; and the wave controller is connected with the transmitting waveguide slot antenna and the receiving waveguide slot antenna. Compared with a two-dimensional scanning phased array, the antenna combination not only can meet the requirement of a wave beam coverage range, but also greatly reduces the number of transmitting and receiving assemblies and remarkably reduces the cost, and the whole antenna combination is compact in structure, moderate in size, light in weight and excellent in performance, meets the installation and use requirements of an airborne platform, and is suitable for popularization and application. And the method has very high engineering application value.

Description

Technical Field

[0001] The utility model relates to the technical field of antennas, in particular to a cylindrical phased array antenna. Background Art

[0002] Relay communication technology is a technology used in communication networks to enhance signal transmission capabilities and expand coverage. Relay communication requires a suitable relay platform to forward signals. Commonly used platforms include ground-based wireless relay stations, air-based relay stations, space-based satellite relays, and other platforms. In range tests, it is necessary to transmit the target area broadband data to the ground command center through relay communication. Compared with other platforms, air-based manned aircraft platforms need to study low-cost relay communication antennas suitable for installation on manned aircraft platforms to ensure reliable transmission of "ground-air-ground" relay data, so as to meet the requirements of relay broadband communication during aircraft flight.

[0003] Currently, phased array antennas usually adopt traditional rectangular arrays, using two-dimensional phase scanning in azimuth and elevation. They have many units, narrow beams, and high costs. They are seriously affected by changes in the attitude of the aircraft platform and cannot meet the requirements of aircraft platform in-motion communications. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a cylindrical phased array antenna.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A cylindrical phased array antenna comprises a fixing frame, wherein the fixing frame is cylindrical, a plurality of uniformly distributed transmitting waveguide slot antennas are fixedly connected to the circumferential outer wall of the fixing frame, a plurality of receiving waveguide slot antennas are fixedly connected to the circumferential outer wall of the fixing frame below the transmitting waveguide slot antenna, the plurality of transmitting waveguide slot antennas and the plurality of receiving waveguide slot antennas are distributed in a ring array, a wave controller is fixedly connected to the top of the fixing frame, and the wave controller is connected to the transmitting waveguide slot antenna and the receiving waveguide slot antenna, and a cooling component for cooling the transmitting waveguide slot antenna and the receiving waveguide slot antenna is provided on the top of the fixing frame.

[0007] As a further solution of the utility model, the plurality of transmitting waveguide slot antennas and receiving waveguide slot antennas each include a connecting block, which is fixedly connected to the circumferential outer wall of the fixing frame, and one side of the connecting block is integrally formed with a cavity filter and a waveguide slot antenna body.

[0008] As a further solution of the present utility model, the number of the plurality of transmitting waveguide slot antennas and the number of receiving waveguide slot antennas are both sixty-four.

[0009] As a further solution of the present invention, a plurality of the transmitting waveguide slot antennas and a plurality of the receiving waveguide slot antennas are staggeredly distributed.

[0010] As a further solution of the utility model, the cooling assembly includes a coolant chassis, which is fixedly connected to the top of the fixed frame and fixed to the transmitting waveguide slot antenna, and the wave controller passes through the coolant chassis, and the top of the coolant chassis is fixedly connected to a coolant tank, and the top of the coolant tank is fixedly connected to a liquid inlet pipe and a liquid outlet pipe.

[0011] As a further solution of the utility model, two annular partitions are fixedly connected in the coolant tank, so that the coolant tank is divided into a plurality of cavities.

[0012] As a further solution of the utility model, the circumferential outer walls of the liquid inlet pipe and the liquid outlet pipe are fixedly connected with two symmetrically distributed connecting pipes, and the liquid inlet pipe, the liquid outlet pipe and the two connecting pipes are respectively connected with multiple cavities.

[0013] As a further solution of the utility model, a heat insulation board is fixedly connected to the outer side of the coolant tank, and the liquid inlet pipe, the liquid outlet pipe and the two connecting pipes all pass through the heat insulation board.

[0014] The beneficial effects of the utility model are:

[0015] 1. Through the coordinated use of the transmitting waveguide slot antenna and the receiving waveguide slot antenna distributed in a ring array, a cylindrical array beam switching composite one-dimensional phase scanning method is adopted, which has high array efficiency. While meeting the beam coverage requirements, compared with the two-dimensional scanning phased array, it greatly reduces the number of transceiver components and significantly reduces the cost.

[0016] 2. The antenna in the utility model adopts phase scanning mode, the beam changes instantly and quickly, and the beam pointing speed is fast. A set of antennas can generate 4 receiving and transmitting beams in two directions, which are used to point to the target area and the ground command center respectively, and complete the communication requirements of two ground stations for simultaneous transmission and reception. The entire antenna combination has a compact structure, moderate size, light weight, and excellent performance, which meets the installation and use requirements of the airborne platform and has a high engineering application value. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a right-side three-dimensional structural schematic diagram of a cylindrical phased array antenna proposed by the utility model;

[0018] Figure 2 This is a schematic diagram of a partially enlarged structure of a cylindrical phased array antenna proposed by the utility model;

[0019] Figure 3 The utility model is a schematic diagram of the cross-sectional structure of a coolant tank of a cylindrical phased array antenna.

[0020] In the figure: 1. liquid outlet pipe; 2. wave controller; 3. coolant tank; 4. liquid inlet pipe; 5. coolant chassis; 6. transmitting waveguide slot antenna; 7. receiving waveguide slot antenna; 8. fixing bracket; 9. connecting block; 10. cavity filter; 11. waveguide slot antenna body; 14. connecting pipe; 15. heat insulation board; 16. annular partition. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0022] Reference Figure 1-Figure 3 A cylindrical phased array antenna comprises a fixing frame 8, which is cylindrical, and a plurality of uniformly distributed transmitting waveguide slot antennas 6 are fixed to the circumferential outer wall of the fixing frame 8 by bolts, and a plurality of receiving waveguide slot antennas 7 are fixed to the circumferential outer wall of the fixing frame 8 by bolts at a position below the transmitting waveguide slot antenna 6, and the plurality of transmitting waveguide slot antennas 6 and the plurality of receiving waveguide slot antennas 7 are distributed in a ring array, and a wave controller 2 is fixed to the top of the fixing frame 8 by bolts, and the wave controller 2 is connected to the transmitting waveguide slot antenna 6 and the receiving waveguide slot antenna 7, and the transmitting waveguide slot antenna 6 and the receiving waveguide slot antenna 7 are distributed on the outside of the fixing frame 8 in the form of a ring array, and a cylindrical array beam switching composite one-dimensional phase scanning method is adopted, and the array efficiency is high. While meeting the beam coverage requirements, compared with the two-dimensional scanning phased array, the number of transmitting and receiving components is greatly reduced, and the cost is significantly reduced, and a cooling component for cooling the transmitting waveguide slot antenna 6 and the receiving waveguide slot antenna 7 is provided on the top of the fixing frame 8.

[0023] In the utility model, a plurality of transmitting waveguide slot antennas 6 and a receiving waveguide slot antenna 7 each include a connecting block 9, the connecting block 9 is fixed to the circumferential outer wall of the fixing frame 8 by bolts, a cavity filter 10 and a waveguide slot antenna body 11 are integrally formed on one side of the connecting block 9, the number of the plurality of transmitting waveguide slot antennas 6 and the receiving waveguide slot antenna 7 is sixty-four, the plurality of transmitting waveguide slot antennas 6 and the plurality of receiving waveguide slot antennas 7 are staggered, the transmitting waveguide slot antenna 6 is mainly composed of a limiter, a low noise amplifier, a power divider, a phase shifter, a switch, etc., and has a channel-by-channel opening and closing function, completes the amplification of the received signal, and divides the signal into two streams, performs phase shifting and attenuation respectively, and then outputs the two signals to the synthesis network for synthesis respectively, the receiving waveguide slot antenna 7 is mainly composed of an isolator, a power amplifier, a combiner, a phase shifter, a switch, etc., and has a channel-by-channel opening and closing function, the T component receives the signal sent by the power distribution network, performs phase shifting, filtering and amplification on the transmitting signal, and sends it to the antenna unit;

[0024] The cooling assembly includes a coolant chassis 5, which is fixed to the top of the fixing frame 8 and fixed to the transmitting waveguide slot antenna 6 by bolts, and the wave controller 2 passes through the coolant chassis 5. A coolant tank 3 is fixed to the top of the coolant chassis 5 by bolts. A liquid inlet pipe 4 and a liquid outlet pipe 1 are welded to the top of the coolant tank 3. Two annular partitions 16 are fixed in the coolant tank 3 by bolts, so that the coolant tank 3 is divided into multiple cavities. Two symmetrically distributed connecting pipes 14 are welded to the circumferential outer walls of the liquid inlet pipe 4 and the liquid outlet pipe 1. The liquid inlet pipe 4, the liquid outlet pipe 1 and the two connecting pipes 14 are respectively connected to the multiple cavities. The coolant is added to the coolant tank 3 through the liquid inlet pipe 4. At this time, the coolant will be diverted through the connecting pipe 14, so that the coolant enters the cavity separated by the annular partition 16. The coolant is in The coolant tank 3 is filled with coolant flowing in the coolant tank 3. At this time, the coolant in the coolant tank 3 will perform heat exchange with the heat of the transmitting waveguide slot antenna 6 and the receiving waveguide slot antenna 7 absorbed by the coolant chassis 5. After the coolant fills the coolant tank 3, continue to add coolant into the coolant tank 3 through the liquid inlet pipe 4. At this time, the newly entered coolant will discharge the coolant that absorbs heat through the liquid outlet pipe 1. At the same time, the newly entered coolant will mix with the coolant that absorbs heat, thereby reducing the temperature of the coolant that absorbs heat, thereby cooling the transmitting waveguide slot antenna 6 and the receiving waveguide slot antenna 7. The outer side of the coolant tank 3 is fixed with a heat insulation board 15 by bolts, and the liquid inlet pipe 4, the liquid outlet pipe 1 and the two connecting pipes 14 all pass through the heat insulation board 15. The heat insulation board 15 can prevent the coolant from absorbing external heat.

[0025] Working principle: The transmitting waveguide slot antenna 6 and the receiving waveguide slot antenna 7 are distributed on the outside of the fixed frame 8 in the form of a circular array, and a cylindrical array beam switching composite one-dimensional phase scanning method is adopted. The array efficiency is high. While meeting the beam coverage requirements, compared with the two-dimensional scanning phased array, the number of transmitting and receiving components is greatly reduced, and the cost is significantly reduced. When in use, the coolant is added to the coolant tank 3 through the liquid inlet pipe 4, and the coolant flows in the coolant tank 3 to fill the coolant tank 3. At this time, the coolant in the coolant tank 3 will heat exchange the heat of the transmitting waveguide slot antenna 6 and the receiving waveguide slot antenna 7 absorbed by the coolant chassis 5. After the coolant fills the coolant tank 3, continue to add coolant to the coolant tank 3 through the liquid inlet pipe 4. At this time, the newly entered coolant will discharge the coolant that absorbs heat through the liquid outlet pipe 1, and at the same time, the newly entered coolant will mix with the coolant that absorbs heat, thereby reducing the temperature of the coolant that absorbs heat, thereby cooling the transmitting waveguide slot antenna 6 and the receiving waveguide slot antenna 7.

[0026] In addition, the terms "disposed", "provided with", "connected", "connected", and "socketed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

Claims

1. A cylindrical phased array antenna, comprising a fixing frame (8), characterized in that: The fixing frame (8) is cylindrical, and a plurality of uniformly distributed transmitting waveguide slot antennas (6) are fixedly connected to the circumferential outer wall of the fixing frame (8); a plurality of receiving waveguide slot antennas (7) are fixedly connected to the circumferential outer wall of the fixing frame (8) at a position below the transmitting waveguide slot antenna (6); the plurality of transmitting waveguide slot antennas (6) and the plurality of receiving waveguide slot antennas (7) are distributed in a ring array; a wave controller (2) is fixedly connected to the top of the fixing frame (8), and the wave controller (2) is connected to the transmitting waveguide slot antenna (6) and the receiving waveguide slot antenna (7); and a cooling component for cooling the transmitting waveguide slot antenna (6) and the receiving waveguide slot antenna (7) is provided on the top of the fixing frame (8).

2. The cylindrical phased array antenna according to claim 1, characterized in that: The plurality of transmitting waveguide slot antennas (6) and receiving waveguide slot antennas (7) each comprise a connecting block (9), wherein the connecting block (9) is fixedly connected to the circumferential outer wall of a fixing frame (8), and a cavity filter (10) and a waveguide slot antenna body (11) are integrally formed on one side of the connecting block (9).

3. The cylindrical phased array antenna according to claim 2, characterized in that: The number of the plurality of transmitting waveguide slot antennas (6) and receiving waveguide slot antennas (7) is sixty-four.

4. The cylindrical phased array antenna according to claim 3, characterized in that: The plurality of transmitting waveguide slot antennas (6) and the plurality of receiving waveguide slot antennas (7) are distributed in an alternating manner.

5. The cylindrical phased array antenna according to claim 1, characterized in that: The cooling assembly comprises a coolant chassis (5), the coolant chassis (5) is fixedly connected to the top of a fixing frame (8) and is fixed to a transmitting waveguide slot antenna (6), and the wave controller (2) passes through the coolant chassis (5), the top of the coolant chassis (5) is fixedly connected to a coolant tank (3), and the top of the coolant tank (3) is fixedly connected to a liquid inlet pipe (4) and a liquid outlet pipe (1).

6. The cylindrical phased array antenna according to claim 5, characterized in that: Two annular partitions (16) are fixedly connected inside the coolant tank (3), so that the coolant tank (3) is divided into a plurality of cavities.

7. The cylindrical phased array antenna according to claim 6, characterized in that: The circumferential outer walls of the liquid inlet pipe (4) and the liquid outlet pipe (1) are both fixedly connected to two symmetrically distributed connecting pipes (14); the liquid inlet pipe (4), the liquid outlet pipe (1) and the two connecting pipes (14) are respectively connected to a plurality of cavities.

8. The cylindrical phased array antenna according to claim 6, characterized in that: A heat insulation board (15) is fixedly connected to the outside of the coolant tank (3), and the liquid inlet pipe (4), the liquid outlet pipe (1) and the two connecting pipes (14) all pass through the heat insulation board (15).

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