A phased array radar system

Abstract

The present invention discloses a phased array radar system, and relates to the field of radar technology. The system includes a servo system, a radar body and an antenna system, wherein the antenna system includes a plurality of antenna units, each antenna unit including a first layer of copper skin, a first substrate, a second layer of copper skin, a second substrate and a third layer of copper skin; a first through hole penetrating the first substrate is provided around the first layer of copper skin; a first groove is provided around the center of the first layer of copper skin, so that a first copper block is formed at the center of the first layer of copper skin; a second groove is provided on the diagonal line of the first layer of copper skin, and a second copper block is formed at the center of the second groove; the diagonals of the first layer of copper skin, the first groove, the first copper block, the second groove and the second copper block all have cut angles; a second through hole penetrating the first substrate is provided around the first copper block; a first feeding point is provided on the second copper block. The antenna unit of the present invention can work in the C band and the X band at the same time, and circular polarization is achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of radars, and in particular relates to a phased array radar system. Background Art

[0002] With the development of social economy, people have higher and higher requirements for the accuracy and timeliness of weather forecasts, especially the urgent need for monitoring and early warning of disastrous weather. Traditional weather radars are difficult to meet the monitoring needs of rapidly changing small and medium-scale weather systems. Phased array weather radars, due to their fast scanning and high temporal and spatial resolution, can better capture the details and evolution of disastrous weather such as typhoons, thunderstorms, tornadoes, etc., and provide more powerful support for weather forecasting and disaster prevention and mitigation.

[0003] Currently, phased array weather radars are developing from passive to active, requiring higher reliability and efficiency; from analog beamforming to digital beamforming, requiring anti-interference, multi-mode, and fast scanning speed; from narrowband to broadband, and from single frequency to multi-frequency, requiring high resolution and high target recognition rate.

[0004] As one of the core components of the phased array weather radar system, the importance of the antenna is mainly reflected in the following aspects: fast scanning capability, flexible beam pointing, beam shape control, efficient signal transmission, high-sensitivity signal reception, improved spatial resolution, enhanced anti-interference capability, etc. At present, phased array weather radars are mainly concentrated in C-band, X-band, etc. With the rapid development of wireless technology, miniaturization and multi-band have become research hotspots. According to the traditional method, radar superposition of C and X-band systems will cause the RF front end and antenna size to be too large. Circularly polarized antennas have significant advantages in suppressing multipath effects and reducing channel polarization mismatch, but most of the research on circularly polarized antennas is concentrated on single-frequency antennas, while dual-frequency antennas are mainly concentrated in the fields of WIFI dual-frequency, millimeter waves, etc., and are mainly linearly polarized. Summary of the invention

[0005] The object of the present invention is to provide a phased array radar system to solve the problem that the radio frequency front end and the antenna are too large in size due to the direct superposition of C-band and X-band antennas in conventional phased array radars.

[0006] The present invention solves the above technical problems through the following technical solutions: a phased array radar system, comprising a servo system, a radar body and an antenna system, wherein the servo system is used to perform motion control on the entire radar system, the radar body is used to generate electromagnetic wave signals, sample, process and analyze received radar echo signals, and the antenna system is used to radiate the electromagnetic wave signals and receive radar echo signals;

[0007] The antenna system includes M×N antenna units and M feeding networks, the M antenna units correspond to one feeding network, and each of the antenna units includes a first layer of copper skin, a first substrate, a second layer of copper skin, a second substrate and a third layer of copper skin stacked from top to bottom;

[0008] A plurality of first through holes are provided around the first layer of copper sheet, and the first through holes penetrate the first substrate; a first groove is provided around the center of the first layer of copper sheet, so that a first copper block is formed in the center of the first layer of copper sheet; a second groove is provided on the diagonal of the first layer of copper sheet, and a second copper block is formed in the center of the second groove; the first pair of diagonals of the first layer of copper sheet, the first pair of diagonals of the first groove, the first pair of diagonals of the first copper block, the first pair of diagonals of the second groove, and the first pair of diagonals of the second copper block all have cut angles, and the cut angle of the first groove is located on the same diagonal line as the cut angle of the first copper block, and the cut angle of the second groove is located on the same diagonal line as the cut angle of the second copper block; a second through hole is provided around the first copper block, and the second through hole penetrates the first substrate; a first feeding point is provided on the second copper block;

[0009] The first pair of diagonals of the second layer of copper sheet has a cut angle; a second feeding point is provided on the second layer of copper sheet, and the second feeding point is located in a cavity surrounded by the first through hole; two third through holes are provided on the diagonal line of the second layer of copper sheet, and both of the third through holes penetrate the second substrate and the third layer of copper sheet, wherein the position of one of the third through holes corresponds to the position of the first feeding point and is used to nest the first probe;

[0010] A fourth through hole is provided on the third copper sheet, the position of the fourth through hole corresponds to the position of the second feeding point and is used to nest the second probe; anti-pads are provided at the entrances of the first probe and the second probe on the third copper sheet.

[0011] For each antenna unit, a C-band dielectric integrated waveguide slot antenna is formed by combining the first slot, the first layer of copper skin, the first copper block, the first substrate, the first through hole and the second through hole, and the first slot is used as an independent and main C-band antenna radiator; an X-band antenna is formed by combining the second slot, the second copper block, the first layer of copper skin and the first substrate, and the second copper block separated by the second slot is used as an independent X-band antenna radiator; the present invention realizes circular polarization through angle cutting, the size of the whole antenna unit is similar to that of the traditional patch C-band antenna, and can work in the C-band and X-band at the same time; by changing the angle cutting position of the first layer of copper skin, the right-hand circular polarization or left-hand circular polarization of the antenna can be flexibly adjusted, the circular polarization principle is simple, it has a high aperture reuse rate and a compact structure.

[0012] Furthermore, the radar body includes a polarization switch component, a TR component, an AD sampling component, a signal processing component, a wave control component, an intermediate frequency transceiver component, a power division component and a frequency synthesis component; the polarization switch component, TR component, AD sampling component and signal processing component are connected in sequence, the wave control component, the intermediate frequency transceiver component and the power division component are connected in sequence, the power division component is connected to the TR component, the frequency synthesis component is connected to the wave control component, the intermediate frequency transceiver component, the power division component and the signal processing component, and the polarization switch component is connected to the antenna system.

[0013] Furthermore, two fifth through holes are opened on the central axis of the first copper layer, and two sixth through holes are opened on the diagonal line of the first copper layer, and both the fifth through hole and the sixth through hole penetrate the first substrate.

[0014] Furthermore, the two sixth through holes and the second copper block and the second groove are respectively located on different diagonal lines.

[0015] Furthermore, the cut angles of the first copper sheet layer, the first groove, the first copper block, the second groove and the second copper block are all located on the same diagonal line.

[0016] Furthermore, two seventh through holes are opened on the diagonal line of the second copper sheet layer, and both of the two seventh through holes penetrate the second substrate and the third copper sheet layer, and the two seventh through holes and the two third through holes are located on different diagonals.

[0017] Furthermore, the second feeding point is located on the central axis of the second layer of copper skin.

[0018] Furthermore, insulating rings are sleeved on the first probe and the second probe.

[0019] Furthermore, the insulating ring is made of polytetrafluoroethylene material.

[0020] Furthermore, the first layer of copper skin has the same size as the second layer of copper skin, and the third layer of copper skin has the same size as the first substrate and the second substrate.

[0021] Beneficial Effects

[0022] Compared with the prior art, the advantages of the present invention are:

[0023] Each antenna unit of the phased array radar system provided by the present invention can work in the C band and the X band at the same time, and circular polarization is realized by angle cutting. The circular polarization principle is simple, and the right-hand circular polarization or left-hand circular polarization of the antenna can be flexibly adjusted by changing the angle cutting position of the first layer of copper foil, thereby improving the flexibility of circular polarization. The C band antenna and the X band antenna are highly integrated, and part of the reference ground and the short-circuit through hole are shared, without additionally increasing the size, having a high aperture reuse rate and a compact structure, and effectively solving the problem that the radar radio frequency front end and the antenna system are too large in size due to the direct superposition of the C and X band antennas in the traditional radar. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solution of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only one embodiment of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 is a structural block diagram of a phased array radar system in an embodiment of the present invention;

[0026] Figure 2 is an exploded view of an antenna unit in an embodiment of the present invention;

[0027] Figure 3 Schematic diagram of the first layer of copper skin in an embodiment of the present invention;

[0028] Figure 4 Schematic diagram of the second layer of copper skin in an embodiment of the present invention;

[0029] Figure 5 Schematic diagram of the third layer of copper skin in an embodiment of the present invention;

[0030] Figure 6 are S11 parameter and S21 parameter curves of the antenna unit in the embodiment of the present invention;

[0031] Figure 7 1 and 2 are S12 parameter and S22 parameter curves of the antenna unit in the embodiment of the present invention.

[0032] Explanation of the figure marks: 1-first layer of copper sheet, 10-first groove, 101-cut corner of the first groove, 11-first copper block, 111-cut corner of the first copper block, 112-second through hole, 12-second groove, 121-cut corner of the second groove, 13-second copper block, 131-cut corner of the second copper block, 132-first feeding point, 14-first through hole, 15-cut corner of the first layer of copper sheet, 16-fifth through hole, 17-sixth through hole, 2-first substrate, 3-second layer of copper sheet, 31-seventh through hole, 32-second feeding point, 33-third through hole, 34-first probe, 35-cut corner of the second layer of copper sheet, 4-second substrate, 5-third layer of copper sheet, 51-fourth through hole, 52-insulating ring, 53-second probe, 54-anti-pad. DETAILED DESCRIPTION

[0033] The following is a clear and complete description of the technical solution in the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] The technical solution of the present application is described in detail with specific embodiments below. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described in detail in some embodiments.

[0035] like Figure 1 As shown, the phased array radar system provided by the embodiment of the present invention includes a servo system, a radar body and an antenna system. The servo system is used to control the motion of the entire radar system, such as rotation and other movements; the radar body is used to generate electromagnetic wave signals, sample, process and analyze received radar echo signals; the antenna system is used to radiate the electromagnetic wave signals generated by the radar body and receive radar echo signals.

[0036] like Figure 1 As shown, the radar body includes a polarization switch component, a TR component (i.e., a transceiver component), an AD sampling component (i.e., an analog-to-digital sampling component), a signal processing component, a wave control component, an intermediate frequency transceiver component, a power division component, and a frequency synthesis component; the polarization switch component, the TR component, the AD sampling component, and the signal processing component are connected in sequence, the wave control component, the intermediate frequency transceiver component, and the power division component are connected in sequence, the power division component is connected to the TR component, the frequency synthesis component is connected to the wave control component, the intermediate frequency transceiver component, the power division component, and the signal processing component, and the polarization switch component is connected to the antenna system.

[0037] The polarization switch component is used to select the horizontal and vertical channels (V / H); the TR component is used to amplify and filter the RF signal; the AD sampling component is used to convert the analog signal output by the TR component into a digital signal; the signal processing component is used to process and analyze the digital signal output by the AD sampling component; the wave control component is used to generate the intermediate frequency signal; the intermediate frequency transceiver component is used to amplify and filter the intermediate frequency transmission signal and the intermediate frequency reception signal; the power division component is used to divide the signal output by the intermediate frequency transceiver component; the frequency synthesis component is used to convert and amplify the intermediate frequency signal to generate a specific RF signal and local oscillator signal. The radar body also includes a power supply component, which provides power to the entire radar body.

[0038] The phased array radar system includes multiple radar bodies and a server component, which is connected to the signal processing component of each radar body. The server component is used to compress and process the data generated by all radar bodies and interact with terminal users.

[0039] The antenna system includes M×N antenna units and M feeding networks, the M antenna units correspond to one feeding network, and the M antenna units are connected to the corresponding one feeding network. Figure 2 As shown, each antenna unit includes a first copper layer 1, a first substrate 2, a second copper layer 3, a second substrate 4, and a third copper layer 5 stacked from top to bottom, the dielectric constant of the first substrate 2 and the second substrate 4 is between 2 and 4, the thickness of the first copper layer 1, the second copper layer 3, and the third copper layer 5 is 18um, the first copper layer 1 is an antenna radiator and is used to radiate electromagnetic waves into space, the first substrate 2 and the second substrate 4 are used as electromagnetic wave transmission carriers, and the second copper layer 3 and the third copper layer 5 are used as reference ground planes and are used for feeding network design. In this embodiment, the first copper layer 1, the first substrate 2, the second copper layer 3, the second substrate 4, and the third copper layer 5 are all rectangular.

[0040] like Figure 3As shown, a plurality of first through holes 14 are opened around the first copper sheet 1, and the first through holes 14 penetrate the first substrate 2; a first groove 10 is opened around the center of the first copper sheet 1, so that a first copper block 11 is formed in the center of the first copper sheet 1; a second groove 12 is opened on the diagonal line of the first copper sheet 1, and a second copper block 13 is formed in the center of the second groove 12; the first pair of diagonals of the first copper sheet 1 (i.e., the upper left corner and the lower right corner), the first pair of diagonals of the first groove 10 (i.e., the upper left corner and the lower right corner), the first pair of diagonals of the first copper block 11 (i.e., the upper left corner and the lower right corner), the first pair of diagonals of the second groove 12 (i.e., the upper left corner and the right corner) The first copper block 11 is provided with a first feeding point 132 (i.e., the feeding point of the X-band antenna), and the first feeding point 132 passes through the first substrate 2, the second copper sheet 3, the second substrate 4 and the third copper sheet 5 in sequence, and is fed on the back side of the third copper sheet 5.

[0041] The first through hole 14 is used to connect the first layer of copper skin 1 and the second layer of copper skin 3, and the current of the first layer of copper skin 1 can directly reach the second layer of copper skin 3 through the first through hole 14. The first layer of copper skin 1 is cut to achieve circular polarization. After the cut, two degenerate modes with equal amplitude and orthogonal polarization can be generated to work simultaneously, one of which has a phase lead of 45° and the other has a phase lag of 45° to achieve circular polarization radiation. Circular polarization is divided into left-handed and right-handed. In the direction of propagation, the left-handed spiral rule is called left-handed circular polarization, and the right-handed spiral rule is called right-handed circular polarization. In this embodiment, when the cut corners of the first layer of copper skin 1 are located at the upper left corner and the lower right corner, the antenna unit is left-handed circular polarization; when the cut corners of the first layer of copper skin 1 are located at the upper right corner and the lower left corner, the antenna unit is right-handed circular polarization.

[0042] The first copper sheet 1, the first groove 10 and the first copper block 11, the second groove 12 and the second copper block 13 are independent of each other, so the cut corner 15 of the first copper sheet, the cut corners 101 / 111 of the first groove and the first copper block, and the cut corners 121 / 131 of the second groove and the second copper block can be located on the same diagonal line or on different diagonals. In this embodiment, the second groove 12 and the second copper block 13 are located at the lower right corner of the first groove 10 and the first copper block 11, and the second groove 12 and the second copper block 13 can also be located at the upper left corner, upper right corner or lower left corner of the first groove 10 and the first copper block 11.

[0043] The first slot 10 separates the first copper sheet 1 from the first copper block 11, so that the first copper sheet 1, the first slot 10, the first copper block 11, etc. form an independent C-band antenna radiator; the second slot 12 separates the first copper sheet 1 from the second copper block 13, so that the second copper block 13 forms an independent X-band antenna radiator. The first slot 10, the first copper sheet 1, the first copper block 11, the first substrate 2, the first through hole 14 and the second through hole 112 are combined to form a C-band dielectric integrated waveguide slot antenna, with the first slot 10 as the main C-band antenna radiator, and electromagnetic waves are radiated into space through the first slot 10; the second slot 12, the second copper block 13, the first copper sheet 1 and the first substrate 2 are combined to form an X-band antenna, with the second copper block 13 as the X-band antenna radiator, and electromagnetic waves are radiated into space through the second copper block 13, and the second slot 12 plays an isolation role. The present invention integrates a C-band antenna and an X-band antenna, reduces the size of the antenna unit, and isolates the C-band antenna from the X-band antenna.

[0044] like Figure 4 As shown, the first pair of diagonals of the second copper sheet 3 has a cut angle 35; a second feeding point 32 (i.e., the feeding point of the C-band antenna) is provided on the second copper sheet 3, and the second feeding point 32 is located in a cavity surrounded by the first through hole 14; two third through holes 33 are provided on the diagonal line of the second copper sheet 3, and both of the two third through holes 33 penetrate the second substrate 4 and the third copper sheet 5, wherein the position of one of the third through holes 33 corresponds to the position of the first feeding point 132 and is used to nest the first probe 34. In this embodiment, the second feeding point 32 is located on the central axis of the second copper sheet 3, which improves the impedance matching of the antenna unit.

[0045] The second copper layer 3 is a reference ground plane, and the third through hole 33 is used to connect the second copper layer 3 and the third copper layer 5, and a first probe 34 (i.e., the probe of the X-band antenna) is nested in one of the third through holes 33, so the third through hole 33 indirectly plays a shielding role, thereby increasing the isolation between the C-band and X-band antennas.

[0046] like Figure 5 As shown, a fourth through hole 51 is provided on the third copper sheet 5, and the position of the fourth through hole 51 corresponds to the position of the second feeding point 32 and is used to embed the second probe 53. In order to prevent a short circuit between the probe and the third copper sheet 5, a certain amount of copper sheet cutting is performed at the entrance of the first probe 34 and the second probe 53 at the third copper sheet 5 to form an anti-pad 54.

[0047] In a specific embodiment of the present invention, Figure 3 As shown, two fifth through holes 16 are opened on the central axis of the first copper sheet 1 , and two sixth through holes 17 are opened on the diagonal line of the first copper sheet 1 . Both the fifth through hole 16 and the sixth through hole 17 penetrate the first substrate 2 .

[0048] A pair of through holes (i.e., the fifth through hole 16 and the sixth through hole 17) are introduced on the central axis and the diagonal line, respectively. These two through holes are disturbance through holes, and impedance matching can be adjusted by changing the positions of the disturbance through holes. The two fifth through holes 16 are arranged on the central axis of the first layer of copper sheet 1, and the two sixth through holes 17 are arranged on the diagonal line of the first layer of copper sheet 1, which improves the impedance matching of the antenna unit.

[0049] In this embodiment, the two sixth through holes 17 and the second copper block 13 and the second groove 12 are located on different diagonal lines respectively.

[0050] In a specific embodiment of the present invention, Figure 4 As shown, two seventh through holes 31 are provided on the diagonal line of the second copper sheet 3, and both seventh through holes 31 penetrate the second substrate 4 and the third copper sheet 5, and the two seventh through holes 31 and the two third through holes 33 are located on different diagonals. The seventh through holes 31 are used to connect the second copper sheet 3 and the third copper sheet 5.

[0051] In a specific embodiment of the present invention, Figure 5 As shown, an insulating ring 52 is sleeved on the first probe 34 and the second probe 53 to play an insulating role. In this embodiment, the insulating ring 52 is made of polytetrafluoroethylene material.

[0052] In a specific embodiment of the present invention, Figure 2 As shown, the first copper layer 1 has the same size as the second copper layer 3 , and the third copper layer 5 has the same size as the first substrate 2 and the second substrate 4 .

[0053] Compared with the traditional patch C-band antenna, the antenna unit of the present invention has a comparable size and can work in the C-band and X-band at the same time, and can flexibly adjust the antenna to right-hand circular polarization or left-hand circular polarization, and the circular polarization principle is simple; the C-band antenna and the X-band antenna are highly integrated, sharing some reference grounds and short-circuit through holes, without adding extra size, having a high aperture reuse rate and a compact structure, and effectively solving the problem of the traditional radar directly superimposing the C-band and X-band antennas, resulting in the radar RF front end and antenna system being too large in size.

[0054] In order to illustrate that the C-band antenna and the X-band antenna of the antenna unit of the present invention have good isolation, the antenna unit of the present invention is simulated to obtain the S parameter curve of the antenna unit of the present invention, as shown in FIG. Figure 6 and Figure 7As shown. S parameters (i.e. scattering parameters) are used to describe the input and output characteristics of microwave networks. For a two-port network (i.e., there are two ports, usually marked as port 1 and port 2), S parameters include S11, S12, S21 and S22. S11 represents the reflection coefficient of port 1, which is the ratio of the signal reflected back to port 1 from the signal input from port 1 to the input signal; S21 represents the forward transmission coefficient, which is the ratio of the signal transmitted from the signal input from port 1 to the input signal; S22 represents the reflection coefficient of port 2, which is the ratio of the signal reflected back to port 2 from the signal input from port 2 to the input signal; S12 represents the reverse transmission coefficient, which is the ratio of the signal transmitted from the signal input from port 2 to port 1 to the input signal.

[0055] Figure 6 and Figure 7 In the example, port 1 is the C-band antenna port, and port 2 is the X-band antenna port. Figure 6 It can be seen that at 5.4~5.6GHz, S11 is all below -10dB, indicating that in this frequency band, more than 90% of the energy of the antenna is radiated, and the energy reflected back is less than 10%, indicating that the antenna unit of the present invention is well matched; in this frequency band, S21 is all below -20dB, indicating that less than 10% of the C-band antenna energy reaches the X-band antenna, indicating that the C-band antenna and the X-band antenna of the present invention have good isolation and have no effect on each other.

[0056] according to Figure 7 It can be seen that at 9.3~10GHz, S22 is all below -10dB, indicating that in this frequency band, more than 90% of the energy of the antenna is radiated, and the energy reflected back is less than 10%, indicating that the antenna unit of the present invention is well matched; in this frequency band, S12 is all below -20dB, indicating that less than 10% of the X-band antenna energy reaches the C-band antenna, indicating that the C-band antenna and the X-band antenna of the present invention have good isolation and have no effect on each other.

[0057] What is disclosed above is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or modifications within the technical scope disclosed in the present invention, which should be covered within the protection scope of the present invention.

Claims

1. A phased array radar system, characterized in that: The radar system includes a servo system, a radar body and an antenna system, wherein the servo system is used to control the motion of the entire radar system, the radar body is used to generate electromagnetic wave signals, sample, process and analyze received radar echo signals, and the antenna system is used to radiate the electromagnetic wave signals and receive radar echo signals; The antenna system includes M×N antenna units and M feeding networks, the M antenna units correspond to one feeding network, and each of the antenna units includes a first layer of copper skin, a first substrate, a second layer of copper skin, a second substrate and a third layer of copper skin stacked from top to bottom; A plurality of first through holes are provided around the first layer of copper sheet, and the first through holes penetrate the first substrate; a first groove is provided around the center of the first layer of copper sheet, so that a first copper block is formed in the center of the first layer of copper sheet; a second groove is provided on the diagonal of the first layer of copper sheet, and a second copper block is formed in the center of the second groove; the first pair of diagonals of the first layer of copper sheet, the first pair of diagonals of the first groove, the first pair of diagonals of the first copper block, the first pair of diagonals of the second groove, and the first pair of diagonals of the second copper block all have cut angles, and the cut angle of the first groove is located on the same diagonal line as the cut angle of the first copper block, and the cut angle of the second groove is located on the same diagonal line as the cut angle of the second copper block; a second through hole is provided around the first copper block, and the second through hole penetrates the first substrate; a first feeding point is provided on the second copper block; The first pair of diagonals of the second layer of copper sheet has a cut angle; a second feeding point is provided on the second layer of copper sheet, and the second feeding point is located in a cavity surrounded by the first through hole; two third through holes are provided on the diagonal line of the second layer of copper sheet, and both of the third through holes penetrate the second substrate and the third layer of copper sheet, wherein the position of one of the third through holes corresponds to the position of the first feeding point and is used to nest the first probe; A fourth through hole is provided on the third copper sheet, the position of the fourth through hole corresponds to the position of the second feeding point and is used to nest the second probe; anti-pads are provided at the entrances of the first probe and the second probe on the third copper sheet.

2. The phased array radar system according to claim 1, characterized in that: The radar body includes a polarization switch component, a TR component, an AD sampling component, a signal processing component, a wave control component, an intermediate frequency transceiver component, a power division component and a frequency synthesis component; the polarization switch component, the TR component, the AD sampling component and the signal processing component are connected in sequence, the wave control component, the intermediate frequency transceiver component and the power division component are connected in sequence, the power division component is connected to the TR component, the frequency synthesis component is connected to the wave control component, the intermediate frequency transceiver component, the power division component and the signal processing component, and the polarization switch component is connected to the antenna system.

3. The phased array radar system according to claim 1, characterized in that: Two fifth through holes are formed on the central axis of the first copper layer, and two sixth through holes are formed on the diagonal lines of the first copper layer. Both the fifth through hole and the sixth through hole penetrate the first substrate.

4. The phased array radar system according to claim 3, characterized in that: The two sixth through holes and the second copper block and the second groove are respectively located on different diagonal lines.

5. The phased array radar system according to claim 1, characterized in that: The cut angles of the first copper sheet, the first groove, the first copper block, the second groove and the second copper block are all located on the same diagonal line.

6. The phased array radar system according to claim 1, characterized in that: Two seventh through holes are opened on the diagonal line of the second copper layer, and both of the seven through holes penetrate the second substrate and the third copper layer. The two seventh through holes and the two third through holes are located on different diagonals.

7. The phased array radar system according to claim 1, characterized in that: The second feeding point is located on the central axis of the second copper sheet.

8. The phased array radar system according to claim 1, characterized in that: An insulating ring is sleeved on the first probe and the second probe.

9. The phased array radar system according to claim 8, characterized in that: The insulating ring is made of polytetrafluoroethylene material.

10. The phased array radar system according to any one of claims 1 to 9, characterized in that: The first copper layer has the same size as the second copper layer, and the third copper layer has the same size as the first substrate and the second substrate.

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