A full-metal broadband high-gain dual-polarized patch antenna

Abstract

The application discloses a full-metal wideband high-gain dual-polarized panel antenna, which comprises a radiation network and a feed network, the radiation network comprises m first CTS radiation slots, m second CTS radiation slots, m / 2 first one-to-two power dividers, m / 2 second one-to-two power dividers, m / 2 first parallel plate waveguides and m / 2 second parallel plate waveguides, and the feed network comprises a first feed unit, a second feed unit, m 2 / 4 first coaxial-to-double-ridged waveguide adapters, m 2 / 4 second coaxial-to-double-ridged waveguide adapters, m 2 / 4 third coaxial-to-double-ridged waveguide adapters and m 2 / 4 fourth coaxial-to-double-ridged waveguide adapters, and the feed network is used for generating x-polarized direction electromagnetic waves radiated to free space through the m first CTS radiation slots and y-polarized direction electromagnetic waves radiated to free space through the m second CTS radiation slots; the application has the advantages that compatibility of wide bandwidth and high gain can be realized, and the comprehensive performance is relatively high.

Description

Technical Field

[0001] This invention relates to dual-polarized planar antennas, and more particularly to an all-metal broadband high-gain dual-polarized planar antenna. Background Technology

[0002] Compared to using two separate single-polarized antennas, dual-polarized antennas can save cost and space in wireless communication systems. Currently, dual-polarized antennas play an important role in wireless communication systems. All-metal dual-polarized antennas eliminate dielectric loss, thus exhibiting high gain and high efficiency, making them highly sought after in long-range wireless communication scenarios such as high-speed point-to-point wireless communication and satellite communication.

[0003] Parabolic antennas are a common choice for all-metal dual-polarized antenna designs due to their low cost and simple structure. However, parabolic antennas are bulky, making it difficult to achieve a low profile. Chinese invention patent CN106356640B discloses a broadband dual-circularly polarized planar waveguide array antenna. This antenna includes, from top to bottom, a radiating aperture, a resonant cavity, a feeding square waveguide, a circular polarizer, a dual-polarized feeding network, and a standard waveguide transition interface. Its center bandwidth is relatively narrow, only 16%, and its antenna efficiency is approximately 60%, leaving considerable room for improvement. Chinese patent application CN107871935A discloses a dual-polarized transmit / receive shared waveguide array antenna. This antenna, from top to bottom, consists of a radiating waveguide horn, a vertically polarized waveguide feeding network, a horizontally polarized waveguide feeding network, and an orthogonal mode converter. Although this antenna has high overall efficiency, its operating bandwidth is relatively narrow. Therefore, neither of the two types of all-metal dual-polarized antennas, namely the broadband dual-circularly polarized planar waveguide array antenna and the dual-polarized transceiver shared waveguide array antenna, can achieve compatibility between wide bandwidth and high gain, and their overall performance still needs to be improved. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide an all-metal broadband high-gain dual-polarized planar antenna that can achieve compatibility of wide bandwidth and high gain and has high overall performance.

[0005] The technical solution adopted by this invention to solve the above-mentioned technical problems is as follows: an all-metal broadband high-gain dual-polarized planar antenna, comprising a radiating network and a feeding network. The radiating network includes m first CTS radiating slots, m second CTS radiating slots, m / 2 first 1-to-2 power dividers, m / 2 second 1-to-2 power dividers, m / 2 first parallel plate waveguides, and m / 2 second parallel plate waveguides, where m is an even number greater than or equal to 2. The left-right direction is defined as the x-axis polarization direction, and the front-back direction is defined as the y-axis polarization direction. The m first CTS radiating slots are used to radiate electromagnetic waves transmitted to them along the x-axis polarization direction, and the m second CTS radiating slots are used to radiate electromagnetic waves transmitted to them along the x-axis polarization direction. Radiation is directed along the y-axis polarization direction. m / 2 first one-to-two power dividers are used to split the transmitted electromagnetic wave into m corresponding electromagnetic waves, which are then transmitted one-to-one to m first CTS radiating slots. m / 2 second one-to-two power dividers are used to split the transmitted electromagnetic wave into m corresponding electromagnetic waves, which are then transmitted one-to-one to m second CTS radiating slots. m / 2 first parallel plate waveguides are used to transmit the transmitted electromagnetic wave one-to-one to the m / 2 first one-to-two power dividers. m / 2 second parallel plate waveguides are used to transmit the transmitted electromagnetic wave one-to-one to the m / 2 second one-to-two power dividers. The feeding network includes a first feeding unit, a second feeding unit, and m... 2 / 4 First Coaxial Dual Ridge Waveguide Adapters, m 2 / 4 second coaxial to dual-ridge waveguide adapters, m 2 / 4 third coaxial dual-ridge waveguide adapters and m 2 / 4 fourth coaxial to double-ridge waveguide adapters; the first feeding unit is used to divide a single electromagnetic wave transmitted thereto into m 2 / 2 electromagnetic waves, and m of them 2 / 4 electromagnetic waves pass through m 2 / 4 first coaxial to dual-ridge waveguide adapters are transmitted one-to-one to m 2 / 4 at the first parallel plate waveguide, and another m 2 / 4 electromagnetic waves pass through m 2 / 4 second coaxial to dual-ridge waveguide adapters are transmitted one-to-one to m 2 At the four first parallel plate waveguides; the second feeding unit is used to divide the electromagnetic wave transmitted thereto into m... 2 / 2 electromagnetic waves, and m of them 2 / 4 electromagnetic waves pass through m 2 / 4 third coaxial dual-ridge waveguide adapters are transmitted one-to-one to m 2 / 4 at the second parallel plate waveguide, and another m 2 / 4 electromagnetic waves pass through m 2 / 4 fourth coaxial double-ridge waveguide adapters transmit data to m in a one-to-one correspondence. 2 / 4 at the second parallel plate waveguide.

[0006] The all-metal broadband high-gain dual-polarized planar antenna further includes a first metal plate, a second metal plate, a third metal plate, and a fourth metal plate. The first metal plate is stacked on top of the second metal plate, the third metal plate is stacked below the second metal plate, and the fourth metal plate is stacked below the third metal plate. m first CTS radiating slots and m second CTS radiating slots are respectively disposed on the first metal plate. m / 2 first 1-to-2 power dividers, m / 2 second 1-to-2 power dividers, m / 2 first parallel plate waveguides, and m / 2 second parallel plate waveguides are respectively disposed on the second metal plate. The second feed unit, m... 2 / 4 third coaxial dual-ridge waveguide adapters and m 2 Four fourth coaxial to double-ridge waveguide adapters are respectively mounted on the third metal plate, and the first feed unit, m 2 / 4 First coaxial to dual-ridge waveguide adapters and m 2 Four second coaxial double-ridge waveguide adapters are respectively mounted on the fourth metal plate.

[0007] The first, second, third, and fourth metal plates are all rectangular plates. The length direction of the first, second, third, and fourth metal plates is along the x-axis polarization direction, and the width direction is along the y-axis polarization direction. The front and rear faces of the first, second, third, and fourth metal plates are flush with each other. The left and right faces of the first, second, third, and fourth metal plates are flush with each other.

[0008] The m first CTS radiating slots and m second CTS radiating slots have completely identical structural and dimensional parameters. The m first CTS radiating slots are arranged in a row with uniform intervals along the x-axis polarization direction to form the first radiating structure. The center-to-center distance between two adjacent first CTS radiating slots is n, and the value of n is determined by the operating frequency band of the all-metal broadband high-gain dual-polarized planar antenna. Its preferred value is λmin ≤ n ≤ λmax, where λmin = 3 × 10 8 / fH, λmax=3×10 8 / fL, where fH is the highest operating frequency of the all-metal broadband high-gain dual-polarized planar antenna, fL is the lowest operating frequency of the all-metal broadband high-gain dual-polarized planar antenna, λmin is the free space wavelength corresponding to the highest operating frequency fH, and λmax is the free space wavelength corresponding to the lowest operating frequency fL; m second CTS radiating slots are arranged at uniform intervals along a column in the y-axis polarization direction to form a second radiating structure, the center distance between two adjacent second CTS radiating slots is n, the m first CTS radiating slots and the m second CTS radiating slots intersect each other in a crisscross pattern, each second CTS radiating slot intersects with the m first CTS radiating slots, and each first CTS radiating slot intersects with the m second CTS radiating slots. The center of the first radiating structure and the center of the second radiating structure coincide. If the first radiating structure is rotated 90 degrees around its center, it will completely coincide with the second radiating structure.

[0009] The structure and dimensions of the m / 2 first-to-two power dividers and the m / 2 second-to-two power dividers are completely identical. Each first-to-two power divider and each second-to-two power divider has one input port and two output ports, and chokes are provided at the two output ports of each first-to-two power divider and each second-to-two power divider. The m / 2 first-to-two power dividers are arranged in a uniformly spaced column along the x-axis polarization direction to form the first m / 2-to-m power divider structure, with a center-to-center distance of 2n between adjacent first-to-two power dividers. The m / 2 second-to-two power dividers are arranged in a uniformly spaced column along the y-axis polarization direction to form the second m / 2-to-m power divider structure, with a center-to-center distance of 2n between adjacent second-to-two power dividers. Two second one-to-two power dividers are intersected in a crisscross pattern. Each second one-to-two power divider intersects with m / 2 first one-to-two power dividers, and each first one-to-two power divider intersects with m / 2 second one-to-two power dividers. The center of each of the first m / 2 power divider structures coincides with the center of each of the second m / 2 power divider structures. If the first m / 2 power divider structures are rotated 90 degrees around their centers, they will completely coincide with the second m / 2 power divider structures. The two output ports of each of the m / 2 first one-to-two power dividers, totaling m output ports, are connected one-to-one with each of the m first CTS radiating slots. The two output ports of each of the m / 2 second one-to-two power dividers, totaling m output ports, are connected one-to-one with each of the m second CTS radiating slots.

[0010] The structure and dimensions of the m / 2 first parallel plate waveguides and m / 2 second parallel plate waveguides are completely identical; each first parallel plate waveguide and each second parallel plate waveguide has one input port and one output port; the m / 2 first parallel plate waveguides are arranged in a uniformly spaced column along the x-axis polarization direction to form the first parallel plate waveguide structure, with a center-to-center distance of 2n between adjacent first parallel plate waveguides; the m / 2 second parallel plate waveguides are arranged in a uniformly spaced column along the y-axis polarization direction to form the second parallel plate waveguide structure, with a center-to-center distance of 2n between adjacent second parallel plate waveguides; the m / 2 first parallel plate waveguides and m / 2 second parallel plate waveguides are identical in length, width, and height. The waveguides are staggered, with each second parallel plate waveguide intersecting with m / 2 first parallel plate waveguides, and each first parallel plate waveguide intersecting with m / 2 second parallel plate waveguides. The centers of the first and second parallel plate waveguide structures coincide. If the first parallel plate waveguide structure is rotated 90 degrees around its center, it will completely coincide with the second parallel plate waveguide structure. The output ports of the m / 2 first parallel plate waveguides are connected one-to-one with the input ports of the m / 2 first 1-to-2 power dividers, and the output ports of the m / 2 second parallel plate waveguides are connected one-to-one with the input ports of the m / 2 second 1-to-2 power dividers.

[0011] The first power supply unit includes a one-m unit with a coaxial structure. 2 / 2 power divider, dividing this one m 2 The / 2 power divider is called the first one-way divider. 2 The second power divider, comprising a coaxial power divider, includes a single-unit power divider. 2 / 2 power divider, dividing this one m 2 The / 2 power divider is called the second one-way divider. 2 / 2 power divider, the first one-to-m 2 / 2 power divider and the second power divider 2 Each / 2 power divider has one input port and m 2 / 2 output ports, m 2 / 4 First Coaxial Dual Ridge Waveguide Adapters, m 2 / 4 second coaxial to dual-ridge waveguide adapters, m 2 / 4 third coaxial dual-ridge waveguide adapters and m 2 Each of the four fourth coaxial to dual-ridge waveguide adapters has one input port and one output port; 2 Four first coaxial to double-ridged waveguide adapters are arranged in an m / 2 row m / 2 column array structure with uniform spacing along the x-axis and y-axis polarization directions. The center-to-center distance between any two adjacent first coaxial to double-ridged waveguide adapters is 2n, m 2Four second coaxial-to-double-ridge waveguide adapters are arranged in an m / 2 row m / 2 column array structure with uniform spacing along the x-axis and y-axis polarization directions. The center-to-center distance between any two adjacent second coaxial-to-double-ridge waveguide adapters is 2n, m 2 Four third coaxial to double-ridged waveguide adapters are arranged in an m / 2 row m / 2 column array structure with uniform spacing along the x-axis and y-axis polarization directions. The center-to-center distance between any two adjacent third coaxial to double-ridged waveguide adapters is 2n, m 2 Four fourth coaxial to double-ridged waveguide adapters are arranged in an m / 2 row m / 2 column array structure with uniform spacing along the x-axis and y-axis polarization directions. The center-to-center distance between any two adjacent fourth coaxial to double-ridged waveguide adapters is 2n; m 2 / 4 input ports of the first coaxial to dual-ridge waveguide adapter and m 2 / 4 input ports of the second coaxial to dual-ridge waveguide adapter, totaling m 2 / 2 input ports, with the second one-m 2 / 2 power divider m 2 The two output ports are connected one-to-one; m 2 / 4 input ports of the third coaxial to dual-ridge waveguide adapter and m 2 / 4 input ports of the third coaxial to double-ridge waveguide adapter, totaling m 2 / 2 input ports, with the first one divided by m 2 / 2 power divider m 2 The two output ports are connected one-to-one; the m / 2 second parallel plate waveguides are sequentially named from front to back as the 1st to the m / 2nd second parallel plate waveguides. 2 The m / 2 row m / 2 column array structure formed by four first coaxial to dual-ridge waveguide adapters is sequentially named from front to back as the first row to the m / 2nd row of first coaxial to dual-ridge waveguide adapters. Each row of first coaxial to dual-ridge waveguide adapters includes m / 2 first coaxial to dual-ridge waveguide adapters and has m / 2 output ports. 2The m / 2 row m / 2 column array structure formed by four second coaxial to double-ridge waveguide adapters is sequentially named from front to back as the first row to the m / 2nd row of second coaxial to double-ridge waveguide adapters. Each row of second coaxial to double-ridge waveguide adapters includes m / 2 second coaxial to double-ridge waveguide adapters, with m / 2 input ports and m / 2 output ports. The m / 2 output ports of the j-th row of first coaxial to double-ridge waveguide adapters and the m / 2 output ports of the j-th row of second coaxial to double-ridge waveguide adapters are connected to the input port of the j-th second parallel plate waveguide, j = 1, 2, ..., m / 2. The m / 2 first parallel plate waveguides are sequentially named from left to right as the first first parallel plate waveguide to the m / 2nd first parallel plate waveguide. 2 The m / 2 row m / 2 column array structure formed by four third coaxial to dual-ridge waveguide adapters is named from left to right as the first column to the m / 2th column of third coaxial to dual-ridge waveguide adapters. Each column of third coaxial to dual-ridge waveguide adapters includes m / 2 third coaxial to dual-ridge waveguide adapters and has m / 2 output ports. 2 The m / 2 row m / 2 column array structure formed by four fourth coaxial to double-ridge waveguide adapters is named from left to right as the first column to the m / 2th column of fourth coaxial to double-ridge waveguide adapters. Each column of fourth coaxial to double-ridge waveguide adapters includes m / 2 fourth coaxial to double-ridge waveguide adapters, with m / 2 input ports and m / 2 output ports. The m / 2 output ports of the third coaxial to double-ridge waveguide adapter in the kth column and the m / 2 output ports of the second coaxial to double-ridge waveguide adapter in the kth column are connected to the input port of the first parallel plate waveguide, k = 1, 2, ..., m / 2.

[0012] Compared with the prior art, the advantage of the present invention is that it constructs a radiation network using m first CTS radiation slots, m second CTS radiation slots, m / 2 first one-to-two power dividers, m / 2 second one-to-two power dividers, m / 2 first parallel plate waveguides, and m / 2 second parallel plate waveguides, and connects to a first feed unit, a second feed unit, and m... 2 / 4 First Coaxial Dual Ridge Waveguide Adapters, m 2 / 4 second coaxial to dual-ridge waveguide adapters, m 2 / 4 third coaxial dual-ridge waveguide adapters and m 2 Four fourth coaxial double-ridge waveguide adapters form a feeding network. When an electromagnetic wave is fed into the first feeding unit, the first feeding unit distributes the power of the electromagnetic wave fed into it, forming m 2 / 2 electromagnetic waves pass through its m 2 / 2 output ports output to m one by one 2 / 4 third coaxial dual-ridge waveguide adapters and m2 / 4 fourth coaxial to double-ridged waveguide adapters, at this time m 2 / 4 third coaxial dual-ridge waveguide adapters and m 2 Four fourth coaxial to double-ridge waveguide adapters output the electromagnetic waves input to them to the corresponding second parallel plate waveguides. m / 2 second parallel plate waveguides output the electromagnetic waves input to them to m / 2 second one-to-two power dividers. The m / 2 second one-to-two power dividers distribute the power of the input electromagnetic waves, forming m electromagnetic waves, which are then output to m second CTS radiating slots. These m second CTS radiating slots radiate into free space along the y-axis polarization direction. When the second feeding unit receives electromagnetic waves, it distributes the power of the received electromagnetic waves, forming m... 2 / 2 electromagnetic waves pass through its m 2 / 2 output ports output to m one by one 2 / 4 First coaxial to dual-ridge waveguide adapters and m 2 / 4 second coaxial to double-ridged waveguide adapters, at this time m 2 / 4 First coaxial to dual-ridge waveguide adapters and m 2 Four second coaxial to double-ridge waveguide adapters output the electromagnetic waves input to them to the first parallel plate waveguides connected to them. m / 2 first parallel plate waveguides output the electromagnetic waves input to them to m / 2 first one-to-two power dividers. The m / 2 first one-to-two power dividers distribute the power of the electromagnetic waves input to them, forming m electromagnetic waves, which are then output to m first CTS radiating slots. The m first CTS radiating slots radiate into free space along the x-axis polarization direction. This invention has an all-metal structure, which reduces the dielectric loss caused by the addition of dielectric, thereby achieving high gain. Dual-polarization radiation is achieved through CTS radiation technology and all-metal feeding technology. The CTS radiating slots and feeding network used have wide bandwidth characteristics, so the antenna in this design has wide bandwidth characteristics, thus achieving compatibility between wide bandwidth and high gain, and has high overall performance. Attached Figure Description

[0013] Figure 1 A schematic diagram of the overall structure of the all-metal broadband high-gain dual-polarized planar antenna of the present invention when m=2;

[0014] Figure 2 A schematic diagram of the radiation network of the all-metal broadband high-gain dual-polarized planar antenna of the present invention when m=2;

[0015] Figure 3 A top view schematic diagram of the feeding network of the all-metal broadband high-gain dual-polarized planar antenna of the present invention when m=2;

[0016] Figure 4 A slanted view of the feeding network of the all-metal broadband high-gain dual-polarized planar antenna of the present invention when m=2.

[0017] Figure 5 A schematic diagram of the first feeding unit of the all-metal broadband high-gain dual-polarized planar antenna of the present invention when m=2;

[0018] Figure 6 A schematic diagram of the second feed unit of the all-metal broadband high-gain dual-polarized planar antenna of the present invention when m=2;

[0019] Figure 7 A schematic diagram of the overall structure of the all-metal broadband high-gain dual-polarized planar antenna of the present invention when m=8.

[0020] Figure 8 A schematic diagram of the radiation network of the all-metal broadband high-gain dual-polarized planar antenna of the present invention when m=8;

[0021] Figure 9 A schematic diagram of the feeding network of the all-metal broadband high-gain dual-polarized planar antenna of the present invention when m=8;

[0022] Figure 10 Simulation diagram of the reflection coefficient of the all-metal broadband high-gain dual-polarized planar antenna of the present invention when m=8;

[0023] Figure 11 Simulation diagrams of the gain of the all-metal broadband high-gain dual-polarized planar antenna of the present invention in the X-axis polarization direction and y-axis polarization direction when m=8.

[0024] Figure 12 The second segment m of the all-metal broadband high-gain dual-polarized planar antenna of the present invention when m=8. 2 / 2 power divider input port and first one-m 2 / 2 Isolation of the input ports of the power divider. Detailed Implementation

[0025] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0026] Example 1: As Figures 1 to 6As shown, an all-metal broadband high-gain dual-polarized planar antenna includes a radiating network 1 and a feeding network 2. The radiating network 1 includes m first CTS radiating slots 3, m second CTS radiating slots 4, m / 2 first 1-to-2 power dividers 5, m / 2 second 1-to-2 power dividers 6, m / 2 first parallel plate waveguides 7, and m / 2 second parallel plate waveguides 8, where m equals 2. The left-right direction is defined as the x-axis polarization direction, and the front-back direction is defined as the y-axis polarization direction. The m first CTS radiating slots 3 are used to radiate electromagnetic waves transmitted to them along the x-axis polarization direction, and the m second CTS radiating slots 4 are used to radiate electromagnetic waves transmitted to them along the y-axis polarization direction. m / 2 first one-to-two power dividers 5 are used to split the electromagnetic wave transmitted to them into m electromagnetic waves, which are then transmitted one-to-one to m first CTS radiating slots 3. m / 2 second one-to-two power dividers 6 are used to split the electromagnetic wave transmitted to them into m electromagnetic waves, which are then transmitted one-to-one to m second CTS radiating slots 4. m / 2 first parallel plate waveguides 7 are used to transmit the electromagnetic wave transmitted to them one-to-one to m / 2 first one-to-two power dividers 5. m / 2 second parallel plate waveguides 8 are used to transmit the electromagnetic wave transmitted to them one-to-one to m / 2 second one-to-two power dividers 6. The power supply network 2 includes a first power supply unit 9, a second power supply unit 10, and m... 2 / 4 First coaxial to dual-ridge waveguide adapters 11,m 2 / 4 second coaxial to dual-ridge waveguide adapters 12,m 2 / 4 third coaxial dual-ridge waveguide adapters 13 and m 2 / 4 fourth coaxial to double-ridge waveguide adapters 14; the first feed unit 9 is used to divide a single electromagnetic wave transmitted thereto into m 2 / 2 electromagnetic waves, and m of them 2 / 4 electromagnetic waves pass through m 2 / 4 first coaxial to dual-ridge waveguide adapters 11 are transmitted one-to-one to m 2 / 4 first parallel plate waveguides at 7 locations, plus m 2 / 4 electromagnetic waves pass through m 2 / 4 second coaxial to dual-ridge waveguide adapters 12 correspond one-to-one transmission to m 2 / 4 first parallel plate waveguides at 7 locations; the second feed unit 10 is used to divide the electromagnetic wave transmitted to it into m 2 / 2 electromagnetic waves, and m of them 2 / 4 electromagnetic waves pass through m 2 / 4 third coaxial dual-ridge waveguide adapters 13 correspond one-to-one transmission to m 2 / 4 second parallel plate waveguides at 8 locations, plus m 2 / 4 electromagnetic waves pass through m 2 / 4 fourth coaxial to dual-ridge waveguide adapters 14 correspond one-to-one transmission to m2 / 4 second parallel plate waveguides at 8 locations.

[0027] In this embodiment, the all-metal broadband high-gain dual-polarized planar antenna further includes a first metal plate 15, a second metal plate 16, a third metal plate 17, and a fourth metal plate 18. The first metal plate 15 is stacked on top of the second metal plate 16, the third metal plate 17 is stacked below the second metal plate 16, and the fourth metal plate 18 is stacked below the third metal plate 17. m first CTS radiating slots 3 and m second CTS radiating slots 4 are respectively implemented by slotting on the first metal plate 15. m / 2 first one-to-two power dividers 5, m / 2 second one-to-two power dividers 6, m / 2 first parallel plate waveguides 7, and m / 2 second parallel plate waveguides 8 are respectively implemented by slotting on the second metal plate 16. The second feed unit 10, m... 2 / 4 third coaxial dual-ridge waveguide adapters 13 and m 2 The four fourth coaxial to double-ridge waveguide adapters 14 are respectively implemented by slotting on the third metal plate 17, and the first power supply unit 9, m 2 / 4 First coaxial to dual-ridge waveguide adapters 11 and m 2 The four second coaxial double-ridge waveguide adapters 12 are respectively implemented by slotting on the fourth metal plate 18.

[0028] In this embodiment, the first metal plate 15, the second metal plate 16, the third metal plate 17, and the fourth metal plate 18 are all rectangular plates. The length direction of the first metal plate 15, the second metal plate 16, the third metal plate 17, and the fourth metal plate 18 are all along the x-axis polarization direction, and the width direction is all along the y-axis polarization direction. The front end surfaces of the first metal plate 15, the second metal plate 16, the third metal plate 17, and the fourth metal plate 18 are flush with each other. The rear end surfaces of the first metal plate 15, the second metal plate 16, the third metal plate 17, and the fourth metal plate 18 are flush with each other. The left end surfaces of the first metal plate 15, the second metal plate 16, the third metal plate 17, and the fourth metal plate 18 are flush with each other. The right end surfaces of the first metal plate 15, the second metal plate 16, the third metal plate 17, and the fourth metal plate 18 are flush with each other.

[0029] In this embodiment, the structure and size parameters of the m first CTS radiating slots 3 and the m second CTS radiating slots 4 are completely identical. The m first CTS radiating slots 3 are arranged in a row at uniform intervals along the x-axis polarization direction to form the first radiating structure. The center-to-center distance between two adjacent first CTS radiating slots 3 is n, and the value of n is determined by the operating frequency band of the all-metal broadband high-gain dual-polarized planar antenna. Its preferred value is λmin≤n≤λmax, where λmin=3×10 8 / fH, λmax=3×10 8 / fL, where fH is the highest operating frequency of the all-metal broadband high-gain dual-polarized planar antenna, fL is the lowest operating frequency of the all-metal broadband high-gain dual-polarized planar antenna, λmin is the free space wavelength corresponding to the highest operating frequency fH, and λmax is the free space wavelength corresponding to the lowest operating frequency fL; m second CTS radiating slots 4 are arranged at uniform intervals along a column in the y-axis polarization direction to form a second radiating structure. The center distance between two adjacent second CTS radiating slots 4 is n. The m first CTS radiating slots 3 and the m second CTS radiating slots 4 intersect each other in a crisscross pattern. Each second CTS radiating slot 4 intersects with m first CTS radiating slots 3, and each first CTS radiating slot 3 intersects with m second CTS radiating slots 4. The center of the first radiating structure coincides with the center of the second radiating structure. If the first radiating structure is rotated 90 degrees around its center, it will completely coincide with the second radiating structure.

[0030] In this embodiment, the structure and dimensions of the m / 2 first one-to-two power dividers 5 and the m / 2 second one-to-two power dividers 6 are completely identical. Each first one-to-two power divider 5 and each second one-to-two power divider 6 has one input port and two output ports. Chokes stubs 19 are provided at both output ports of each first one-to-two power divider 5 and each second one-to-two power divider 6. The m / 2 first one-to-two power dividers 5 are arranged in a uniformly spaced column along the x-axis polarization direction to form a first m / 2-to-m power divider structure, with a center-to-center distance of 2n between adjacent first one-to-two power dividers 5. The m / 2 second one-to-two power dividers 6 are arranged in a uniformly spaced column along the y-axis polarization direction to form a second m / 2-to-m power divider structure, with a center-to-center distance of 2n between adjacent second one-to-two power dividers 6. The first 1-to-2 power divider 5 and m / 2 second 1-to-2 power dividers 6 are intersected in a crisscross pattern. Each second 1-to-2 power divider 6 intersects with m / 2 first 1-to-2 power dividers 5, and each first 1-to-2 power divider 5 intersects with m / 2 second 1-to-2 power dividers 6. The center of the first m / 2 power divider structure coincides with the center of the second m / 2 power divider structure. If the first m / 2 power divider structure is rotated 90 degrees around its center, it will completely coincide with the second m / 2 power divider structure. The two output ports of the m / 2 first 1-to-2 power dividers 5, totaling m output ports, are connected one-to-one with the m first CTS radiation slots 3. The two output ports of the m / 2 second 1-to-2 power dividers 6, totaling m output ports, are connected one-to-one with the m second CTS radiation slots 4.

[0031] In this embodiment, the structure and dimensional parameters of m / 2 first parallel plate waveguides 7 and m / 2 second parallel plate waveguides 8 are completely identical; each first parallel plate waveguide 7 and each second parallel plate waveguide 8 has an input port and an output port; the m / 2 first parallel plate waveguides 7 are arranged in a uniformly spaced column along the x-axis polarization direction to form the first parallel plate waveguide 7 structure, and the center distance between two adjacent first parallel plate waveguides 7 is 2n; the m / 2 second parallel plate waveguides 8 are arranged in a uniformly spaced column along the y-axis polarization direction to form the second parallel plate waveguide 8 structure, and the center distance between two adjacent second parallel plate waveguides 8 is 2n; the m / 2 first parallel plate waveguides 7 and m / 2 second parallel plate waveguides 8 have completely identical structure and dimensional parameters; each first parallel plate waveguide 7 and each second parallel plate waveguide 8 has an input port and an output port; the m / 2 first parallel plate waveguides 7 and m / 2 second parallel plate waveguides 8 have completely identical structure and dimensional parameters; each first parallel plate waveguide 7 and each second parallel plate waveguide 8 has an input port and an output port; the m / 2 first parallel plate waveguides 7 and m / 2 second parallel plate waveguides 8 have completely identical structure and dimensional parameters; each first parallel plate waveguide 7 and each second parallel plate waveguide 8 has a ... Two parallel plate waveguides 8 intersect each other in a crisscross pattern. Each second parallel plate waveguide 8 intersects with m / 2 first parallel plate waveguides 7, and each first parallel plate waveguide 7 intersects with m / 2 second parallel plate waveguides 8. The center of the first parallel plate waveguide 7 structure coincides with the center of the second parallel plate waveguide 8 structure. If the first parallel plate waveguide 7 structure is rotated 90 degrees around its center, it will completely coincide with the second parallel plate waveguide 8 structure. The output ports of m / 2 first parallel plate waveguides 7 are connected one-to-one with the input ports of m / 2 first one-to-two power dividers 5, and the output ports of m / 2 second parallel plate waveguides 8 are connected one-to-one with the input ports of m / 2 second one-to-two power dividers 6.

[0032] In this embodiment, the first power supply unit 9 includes a single unit with a coaxial structure. 2 / 2 power divider, dividing this one m 2 The / 2 power divider is called the first one-way divider. 2 / 2 power divider, the second feeder unit 10 includes a power divider with a coaxial structure. 2 / 2 power divider, dividing this one m 2 The / 2 power divider is called the second one-way divider. 2 / 2 power divider, first one-to-m 2 / 2 power divider and second-level divider 2 Each / 2 power divider has one input port and m 2 / 2 output ports, m 2 / 4 First coaxial to dual-ridge waveguide adapters 11,m 2 / 4 second coaxial to dual-ridge waveguide adapters 12,m 2 / 4 third coaxial dual-ridge waveguide adapters 13 and m 2 Each of the four fourth coaxial to dual-ridge waveguide adapters 14 has one input port and one output port; 2 Four first coaxial to double-ridged waveguide adapters 11 are arranged in an m / 2 row m / 2 column array structure with uniform spacing along the x-axis and y-axis polarization directions. The center-to-center distance between any two adjacent first coaxial to double-ridged waveguide adapters 11 is 2n, m 2Four second coaxial-to-double-ridge waveguide adapters 12 are arranged in an m / 2 row m / 2 column array structure with uniform spacing along the x-axis and y-axis polarization directions. The center-to-center distance between any two adjacent second coaxial-to-double-ridge waveguide adapters 12 is 2n, m 2 Four third coaxial to double-ridged waveguide adapters 13 are arranged in an m / 2 row m / 2 column array structure with uniform spacing along the x-axis and y-axis polarization directions. The center-to-center distance between any two adjacent third coaxial to double-ridged waveguide adapters 13 is 2n, m 2 Four fourth coaxial to double-ridge waveguide adapters 14 are arranged in an m / 2 row m / 2 column array structure with uniform spacing along the x-axis polarization direction and the y-axis polarization direction, and the center-to-center distance between any two adjacent fourth coaxial to double-ridge waveguide adapters 14 is 2n; m 2 / 4 input ports of the first coaxial to dual-ridge waveguide adapter 11 and m 2 / 4 input ports of the second coaxial to dual-ridge waveguide adapter 12, totaling m 2 / 2 input ports, with the second one-m 2 / 2 power divider m 2 The two output ports are connected one-to-one; m 2 / 4 third coaxial to dual-ridge waveguide adapters 13 input ports and m 2 / 4 input ports of the third coaxial to dual-ridge waveguide adapter 13, totaling m 2 / 2 input ports, with the first one divided by m 2 / 2 power divider m 2 The two output ports are connected one-to-one; the m / 2 second parallel plate waveguides 8 are sequentially named from front to back as the first second parallel plate waveguide 8 to the m / 2th second parallel plate waveguide 8, and m... 2 The m / 2 row m / 2 column array structure formed by four first coaxial to dual-ridge waveguide adapters 11 is sequentially named from front to back as the first row to the m / 2nd row of first coaxial to dual-ridge waveguide adapters 11. Each row of first coaxial to dual-ridge waveguide adapters 11 includes m / 2 first coaxial to dual-ridge waveguide adapters 11 and has m / 2 output ports. 2The m / 2 row m / 2 column array structure formed by four second coaxial to double-ridge waveguide adapters 12 is sequentially named from front to back as the first row to the m / 2 row second coaxial to double-ridge waveguide adapters 12. Each row of second coaxial to double-ridge waveguide adapters 12 includes m / 2 second coaxial to double-ridge waveguide adapters 12, with m / 2 input ports and m / 2 output ports. The m / 2 output ports of the j-th row first coaxial to double-ridge waveguide adapter 11 and the m / 2 output ports of the j-th row second coaxial to double-ridge waveguide adapter 12 are all connected to the input port of the j-th second parallel plate waveguide 8, j = 1, 2, ..., m / 2. The m / 2 first parallel plate waveguides 7 are sequentially named from left to right as the first first parallel plate waveguide 7 to the m / 2 first parallel plate waveguide 7. 2 The m / 2 row m / 2 column array structure formed by four third coaxial to dual-ridge waveguide adapters 13 is sequentially named from left to right as the first column to the m / 2th column of third coaxial to dual-ridge waveguide adapters 13. Each column of third coaxial to dual-ridge waveguide adapters 13 includes m / 2 third coaxial to dual-ridge waveguide adapters 13 and has m / 2 output ports. 2 The m / 2 row m / 2 column array structure formed by the four fourth coaxial to double-ridge waveguide adapters 14 is named from left to right as the first column of fourth coaxial to double-ridge waveguide adapters 14 to the m / 2th column of fourth coaxial to double-ridge waveguide adapters 14. Each column of fourth coaxial to double-ridge waveguide adapters 14 includes m / 2 fourth coaxial to double-ridge waveguide adapters 14, with m / 2 input ports and m / 2 output ports. The m / 2 output ports of the kth column third coaxial to double-ridge waveguide adapter 13 and the m / 2 output ports of the kth column second coaxial to double-ridge waveguide adapter 12 are connected to the input port of the kth first parallel plate waveguide 7, where k = 1, 2, ..., m / 2.

[0033] Example 2: Figures 7 to 9 As shown, this embodiment is basically the same as embodiment one, except that m = 8 in this embodiment.

[0034] The working principle of the all-metal broadband high-gain dual-polarized planar antenna of the present invention is as follows: when the first minute... 2 Electromagnetic waves are fed into the input port of the / 2 power divider, and the first division... 2 The / 2 power divider distributes the power of the electromagnetic waves fed into it, forming m 2 / 2 electromagnetic waves pass through its m 2 / 2 output ports output to m one by one 2 / 4 third coaxial to dual-ridge waveguide adapters 13 input ports and m 2 / 4 input ports of the fourth coaxial to dual-ridge waveguide adapter 14, at this time m2 / 4 third coaxial to dual-ridge waveguide adapters 13 and m 2 The four fourth coaxial to double-ridge waveguide adapters 14 output the electromagnetic waves input thereto to the input ports of the connected second parallel plate waveguides 8. The m / 2 second parallel plate waveguides 8 output the electromagnetic waves input thereto to the input ports of the m / 2 second one-to-two power dividers 6 through their m / 2 output ports. The m / 2 second one-to-two power dividers 6 distribute the power of the input electromagnetic waves, forming m electromagnetic waves, which are then output to the m second CTS radiation slots 4. The waves radiate into free space along the y-axis polarization direction through the m second CTS radiation slots 4. When the second one-to-m... 2 Electromagnetic waves are fed into the input port of the / 2 power divider, and the second division... 2 The / 2 power divider distributes the power of the electromagnetic waves fed into it, forming m 2 / 2 electromagnetic waves pass through its m 2 / 2 output ports output to m one by one 2 / 4 input ports of the first coaxial to dual-ridge waveguide adapter 11 and m 2 / 4 input ports of the second coaxial to dual-ridge waveguide adapter 12, at this time m 2 / 4 First coaxial to dual-ridge waveguide adapters 11 and m 2 The four second coaxial to double-ridge waveguide adapters 12 output the electromagnetic waves input thereto to the input ports of the first parallel plate waveguides 7 connected thereto. The m / 2 first parallel plate waveguides 7 output the electromagnetic waves input thereto to the input ports of the m / 2 first one-to-two power dividers 5 through their m / 2 output ports. The m / 2 first one-to-two power dividers 5 distribute the power of the electromagnetic waves input thereto, forming m electromagnetic waves, which are then output to the m first CTS radiation slots 3. The waves are then radiated into free space along the x-axis polarization direction through the m first CTS radiation slots 3.

[0035] To verify the superiority of the all-metal broadband high-gain dual-polarized planar antenna of the present invention, simulation of the all-metal broadband high-gain dual-polarized planar antenna of the present invention was performed using HFSS simulation software when M equals 8. The simulation diagram of the reflection coefficient of the all-metal broadband high-gain dual-polarized planar antenna of the present invention is shown below. Figure 10 As shown, the simulation diagrams of the gain in the X-axis polarization direction and the Y-axis polarization direction of the all-metal broadband high-gain dual-polarized planar antenna of the present invention are as follows. Figure 11 As shown, the second segment of the all-metal broadband high-gain dual-polarized planar antenna of the present invention... 2 / 2 power divider input port and first one-m 2 The isolation of the input ports of the / 2 power divider is as follows: Figure 12 As shown.

[0036] Figure 10 In the middle, S 11 This indicates the input port of the first power supply unit (i.e., the first sub-unit). 2 The reflection coefficient of the input port of the / 2 power divider, S 22 This indicates the input port of the second power supply unit (i.e., the second sub-unit). 2 The reflection coefficient of the input port of the / 2 power divider is analyzed. Figure 10 It can be seen that the reflection coefficients of both input ports are below -10dB in the frequency application range of 10.5GHz-15GHz (relative bandwidth above 30%), thus indicating that the present invention has a wide bandwidth. Analysis Figure 11 It can be seen that the gains in both the X-axis and Y-axis polarization directions are higher than 24 dBi in the frequency application range of 10.5 GHz to 15 GHz, thus indicating that the present invention has high gain. Analysis Figure 12 It can be seen that the second minute m 2 / 2 power divider input port and first one-m 2 The port isolation of the input ports of the / 2 power divider is below -60dB within the frequency range of 10.5GHz-15GHz, demonstrating the excellent port isolation of this invention. In summary, the all-metal broadband high-gain dual-polarized planar antenna of this invention achieves compatibility between wide bandwidth and high gain, exhibiting high overall performance.

Claims

1. An all-metal broadband high-gain dual-polarized planar antenna, comprising a radiating network and a feeding network, characterized in that... The radiation network includes m first CTS radiating slots, m second CTS radiating slots, m / 2 first 1-to-2 power dividers, m / 2 second 1-to-2 power dividers, m / 2 first parallel plate waveguides, and m / 2 second parallel plate waveguides, where m is an even number greater than or equal to 2. The left-right direction is defined as the x-axis polarization direction, and the front-back direction is defined as the y-axis polarization direction. The m first CTS radiating slots are used to radiate electromagnetic waves transmitted to them along the x-axis polarization direction, the m second CTS radiating slots are used to radiate electromagnetic waves transmitted to them along the y-axis polarization direction, and the m / 2 first 1-to-2 power dividers are used to radiate electromagnetic waves transmitted to them along the y-axis polarization direction. The system divides a single electromagnetic wave transmitted to it into m electromagnetic waves, each corresponding to one of the m first CTS radiating slots. m / 2 second one-to-two power dividers are used to further divide the single electromagnetic wave transmitted to it into m electromagnetic waves, each corresponding to one of the m second CTS radiating slots. m / 2 first parallel plate waveguides are used to further divide the electromagnetic wave transmitted to it into m / 2 first one-to-two power dividers. m / 2 second parallel plate waveguides are used to further divide the electromagnetic wave transmitted to it into m / 2 second one-to-two power dividers. The power supply network includes a first power supply unit, a second power supply unit, and m... 2 / 4 First Coaxial Dual Ridge Waveguide Adapters, m 2 / 4 second coaxial to dual-ridge waveguide adapters, m 2 / 4 third coaxial dual-ridge waveguide adapters and m 2 / 4 fourth coaxial to double-ridge waveguide adapters; the first feeding unit is used to divide a single electromagnetic wave transmitted thereto into m 2 / 2 electromagnetic waves, and m of them 2 / 4 electromagnetic waves pass through m 2 / 4 first coaxial to dual-ridge waveguide adapters are transmitted one-to-one to m 2 / 4 at the first parallel plate waveguide, and another m 2 / 4 electromagnetic waves pass through m 2 / 4 second coaxial to dual-ridge waveguide adapters are transmitted one-to-one to m 2 At the four first parallel plate waveguides; the second feeding unit is used to divide the electromagnetic wave transmitted thereto into m... 2 / 2 electromagnetic waves, and m of them 2 / 4 electromagnetic waves pass through m 2 / 4 third coaxial dual-ridge waveguide adapters are transmitted one-to-one to m 2 / 4 at the second parallel plate waveguide, and another m 2 / 4 electromagnetic waves pass through m 2 / 4 fourth coaxial double-ridge waveguide adapters transmit data to m in a one-to-one correspondence. 2 / 4 at the second parallel plate waveguides; The all-metal broadband high-gain dual-polarized planar antenna further includes a first metal plate, a second metal plate, a third metal plate, and a fourth metal plate. The first metal plate is stacked on top of the second metal plate, the third metal plate is stacked below the second metal plate, and the fourth metal plate is stacked below the third metal plate. m first CTS radiating slots and m second CTS radiating slots are respectively disposed on the first metal plate. m / 2 first 1-to-2 power dividers, m / 2 second 1-to-2 power dividers, m / 2 first parallel plate waveguides, and m / 2 second parallel plate waveguides are respectively disposed on the second metal plate. The second feed unit, m... 2 / 4 third coaxial dual-ridge waveguide adapters and m 2 Four fourth coaxial to double-ridge waveguide adapters are respectively mounted on the third metal plate, and the first feed unit, m 2 / 4 First coaxial to dual-ridge waveguide adapters and m 2 Four second coaxial double-ridge waveguide adapters are respectively mounted on the fourth metal plate.

2. The all-metal broadband high-gain dual-polarized planar antenna according to claim 1, characterized in that... The first, second, third, and fourth metal plates are all rectangular plates. The length direction of the first, second, third, and fourth metal plates is along the x-axis polarization direction, and the width direction is along the y-axis polarization direction. The front and rear faces of the first, second, third, and fourth metal plates are flush with each other. The left and right faces of the first, second, third, and fourth metal plates are flush with each other.

3. The all-metal broadband high-gain dual-polarized planar antenna according to claim 1, characterized in that... The m first CTS radiating slots and m second CTS radiating slots have completely identical structural and dimensional parameters. The m first CTS radiating slots are arranged in a row with uniform intervals along the x-axis polarization direction to form the first radiating structure. The center-to-center distance between two adjacent first CTS radiating slots is n, and the value of n is determined by the operating frequency band of the all-metal broadband high-gain dual-polarized planar antenna. Its value range is λmin ≤ n ≤ λmax, where λmin = 3 × 10 8 / fH, λmax=3×10 8 / fL, where fH is the highest operating frequency of the all-metal broadband high-gain dual-polarized planar antenna, fL is the lowest operating frequency of the all-metal broadband high-gain dual-polarized planar antenna, λmin is the free space wavelength corresponding to the highest operating frequency fH, and λmax is the free space wavelength corresponding to the lowest operating frequency fL; m second CTS radiating slots are arranged at uniform intervals along a column in the y-axis polarization direction to form a second radiating structure, the center distance between two adjacent second CTS radiating slots is n, the m first CTS radiating slots and the m second CTS radiating slots intersect each other in a crisscross pattern, each second CTS radiating slot intersects with the m first CTS radiating slots, and each first CTS radiating slot intersects with the m second CTS radiating slots. The center of the first radiating structure and the center of the second radiating structure coincide. If the first radiating structure is rotated 90 degrees around its center, it will completely coincide with the second radiating structure.

4. The all-metal broadband high-gain dual-polarized planar antenna according to claim 1, characterized in that... The structure and dimensions of the m / 2 first 1-to-2 power dividers and the m / 2 second 1-to-2 power dividers are completely identical. Each first 1-to-2 power divider and each second 1-to-2 power divider has one input port and two output ports. Choke stubs are installed at the two output ports of each first 1-to-2 power divider and each second 1-to-2 power divider. The m / 2 first 1-to-2 power dividers are arranged at uniform intervals along a column in the x-axis polarization direction to form the first m / 2-to-m power divider structure. The center-to-center distance between two adjacent first 1-to-2 power dividers is 2n. m / 2 second one-to-two power dividers are arranged at uniform intervals along a column in the y-axis polarization direction to form a second m / 2-to-m power divider structure. The center-to-center distance between any two adjacent second one-to-two power dividers is 2n. The m / 2 first one-to-two power dividers and the m / 2 second one-to-two power dividers are staggered, with each second one-to-two power divider intersecting with m / 2 first one-to-two power dividers, and each first one-to-two power divider intersecting with m / 2 second one-to-two power dividers. The first m / 2-to-m power divider structure... The center of the first m / 2 power divider structure coincides with the center of the second m / 2 power divider structure. If the first m / 2 power divider structure is rotated 90 degrees around its center, it will completely coincide with the second m / 2 power divider structure. The two output ports of the m / 2 first one-to-two power dividers, totaling m output ports, are connected one-to-one with the m first CTS radiation slots. The two output ports of the m / 2 second one-to-two power dividers, totaling m output ports, are connected one-to-one with the m second CTS radiation slots.

5. The all-metal broadband high-gain dual-polarized planar antenna according to claim 4, characterized in that... The structure and dimensions of m / 2 first parallel plate waveguides and m / 2 second parallel plate waveguides are completely identical; each first parallel plate waveguide and each second parallel plate waveguide has one input port and one output port; the m / 2 first parallel plate waveguides are arranged in a uniformly spaced column along the x-axis polarization direction to form the first parallel plate waveguide structure, with the center-to-center distance between two adjacent first parallel plate waveguides being 2n; the m / 2 second parallel plate waveguides are arranged in a uniformly spaced column along the y-axis polarization direction to form the second parallel plate waveguide structure, with the center-to-center distance between two adjacent first parallel plate waveguides being 2n. The center-to-center spacing of the second parallel plate waveguides is 2n; m / 2 first parallel plate waveguides and m / 2 second parallel plate waveguides intersect each other, with each second parallel plate waveguide intersecting with m / 2 first parallel plate waveguides, and each first parallel plate waveguide intersecting with m / 2 second parallel plate waveguides; the center of the first parallel plate waveguide structure coincides with the center of the second parallel plate waveguide structure, and if the first parallel plate waveguide structure is rotated 90 degrees around its center, it will completely coincide with the second parallel plate waveguide structure; the output ports of m / 2 first parallel plate waveguides are connected one-to-one with the input ports of m / 2 first 1-to-2 power dividers, and the output ports of m / 2 second parallel plate waveguides are connected one-to-one with the input ports of m / 2 second 1-to-2 power dividers.

6. The all-metal broadband high-gain dual-polarized planar antenna according to claim 5, characterized in that... The first power supply unit includes a one-m unit with a coaxial structure. 2 / 2 power divider, dividing this one m 2 The / 2 power divider is called the first one-way divider. 2 The second power divider, comprising a coaxial power divider, includes a single-unit power divider. 2 / 2 power divider, dividing this one m 2 The / 2 power divider is called the second one-way divider. 2 / 2 power divider, the first one-to-m 2 / 2 power divider and the second power divider 2 Each / 2 power divider has one input port and m 2 / 2 output ports, m 2 / 4 First Coaxial Dual Ridge Waveguide Adapters, m 2 / 4 second coaxial to dual-ridge waveguide adapters, m 2 / 4 third coaxial dual-ridge waveguide adapters and m 2 Each of the four fourth coaxial to dual-ridge waveguide adapters has one input port and one output port; 2 Four first coaxial to double-ridged waveguide adapters are arranged in an m / 2 row m / 2 column array structure with uniform spacing along the x-axis and y-axis polarization directions. The center-to-center distance between any two adjacent first coaxial to double-ridged waveguide adapters is 2n. 2 Four second coaxial-to-double-ridged waveguide adapters are arranged in an m / 2 row m / 2 column array structure with uniform spacing along the x-axis and y-axis polarization directions. The center-to-center distance between any two adjacent second coaxial-to-double-ridged waveguide adapters is 2n. 2 Four third coaxial to double-ridged waveguide adapters are arranged in an m / 2 row m / 2 column array structure with uniform spacing along the x-axis and y-axis polarization directions. The center-to-center distance between any two adjacent third coaxial to double-ridged waveguide adapters is 2n. 2 Four fourth coaxial to double-ridged waveguide adapters are arranged in an m / 2 row m / 2 column array structure with uniform spacing along the x-axis and y-axis polarization directions, and the center-to-center distance between any two adjacent fourth coaxial to double-ridged waveguide adapters is 2n; m 2 / 4 input ports of the first coaxial to dual-ridge waveguide adapter and m 2 / 4 input ports of the second coaxial to dual-ridge waveguide adapter, totaling m 2 / 2 input ports, with the second one-m 2 / 2 power divider m 2 The two output ports are connected one-to-one; m 2 / 4 input ports of the third coaxial to dual-ridge waveguide adapter and m 2 / 4 input ports of the third coaxial to double-ridge waveguide adapter, totaling m 2 / 2 input ports, with the first one divided by m 2 / 2 power divider m 2 The two output ports are connected one-to-one; the m / 2 second parallel plate waveguides are sequentially named from front to back as the 1st to the m / 2nd second parallel plate waveguides. 2 The m / 2 row m / 2 column array structure formed by four first coaxial to dual-ridge waveguide adapters is sequentially named from front to back as the first row to the m / 2nd row of first coaxial to dual-ridge waveguide adapters. Each row of first coaxial to dual-ridge waveguide adapters includes m / 2 first coaxial to dual-ridge waveguide adapters and has m / 2 output ports. 2 The m / 2 row m / 2 column array structure formed by four second coaxial to double-ridge waveguide adapters is sequentially named from front to back as the first row to the m / 2nd row of second coaxial to double-ridge waveguide adapters. Each row of second coaxial to double-ridge waveguide adapters includes m / 2 second coaxial to double-ridge waveguide adapters, with m / 2 input ports and m / 2 output ports. The m / 2 output ports of the j-th row of first coaxial to double-ridge waveguide adapters and the m / 2 output ports of the j-th row of second coaxial to double-ridge waveguide adapters are connected to the input port of the j-th second parallel plate waveguide, j=1, 2, ..., m / 2. The m / 2 first parallel plate waveguides are sequentially named from left to right as the first first parallel plate waveguide to the m / 2nd first parallel plate waveguide. 2 The m / 2 row m / 2 column array structure formed by four third coaxial to dual-ridge waveguide adapters is named from left to right as the first column to the m / 2th column of third coaxial to dual-ridge waveguide adapters. Each column of third coaxial to dual-ridge waveguide adapters includes m / 2 third coaxial to dual-ridge waveguide adapters and has m / 2 output ports. 2 The m / 2 row m / 2 column array structure formed by four fourth coaxial to double-ridge waveguide adapters is named from left to right as the first column to the m / 2th column of fourth coaxial to double-ridge waveguide adapters. Each column of fourth coaxial to double-ridge waveguide adapters includes m / 2 fourth coaxial to double-ridge waveguide adapters, with m / 2 input ports and m / 2 output ports. The m / 2 output ports of the third coaxial to double-ridge waveguide adapter in the kth column and the m / 2 output ports of the second coaxial to double-ridge waveguide adapter in the kth column are connected to the input port of the first parallel plate waveguide, k=1, 2, ..., m / 2.

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