A broadband dual-polarized antenna array

Abstract

The present invention discloses a broadband dual-polarization antenna array, comprising a radiating network and a feeding network. The feeding network is used to convert electromagnetic waves in the form of a TEM mode input thereto into electromagnetic waves in the form of a TE10 mode and transmit them to the radiating network. The radiating network is used to radiate the electromagnetic waves transmitted thereto by the feeding network into free space. The radiating network is realized by arranging a partition structure consisting of four levels of metal steps in a rectangular slot in combination with metal branches arranged above the partition structure. The feeding network is realized based on a full parallel feed network consisting of a ridge waveguide structure, a micro-coaxial structure and a magic T. The advantage is that while having high gain and high efficiency, the bandwidth can cover the Ku band, meeting the requirements of Ku-band satellite communications.

Description

Technical Field

[0001] The present invention relates to an antenna array, in particular to a broadband dual-polarization baffle antenna array. Background Art

[0002] Ku-band satellite communications enable high-throughput data transmission. In Ku-band satellite communication systems, independent orthogonal linear polarizations are typically used to establish stable uplinks and downlinks. However, long-distance applications require high-gain, high-efficiency antenna characteristics. Therefore, wideband, high-gain, and high-efficiency antenna arrays that can cover the entire Ku-band satellite communication spectrum have attracted widespread attention. All-metal antenna arrays using a waveguide model are an effective way to achieve high-gain, high-efficiency dual-polarization. However, most reported all-metal dual-polarization antenna arrays are unable to meet the bandwidth requirements for full Ku-band satellite communication coverage due to factors such as back cavities. For example, the paper (S. -G. Zhou, G. -L. Huang, T. -H. Chio, J. -J. Yang and G. Wei, "Design of a Wideband Dual-Polarization Full-Corporate Waveguide Feed Antenna Array," in IEEE Transactions on Antennas and Propagation, vol. 63, no. 11, pp. 4775-4782, Nov. 2015, doi: 10.1109 / TAP.2015.2479639.) discloses a dual-polarization antenna array. However, this array has a relatively narrow bandwidth and cannot cover the Ku band. Therefore, much work remains to be done to achieve broadband, high-gain, and high-efficiency dual-polarization antenna arrays. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a broadband dual-polarized antenna array which has high gain and high efficiency and a bandwidth that can cover the Ku band and meet the requirements of Ku-band satellite communications.

[0004] The technical solution adopted by the present invention to solve the above technical problems is: a broadband dual-polarization antenna array, including a radiating network and a feeding network, wherein the feeding network is used to convert the electromagnetic waves in the TEM mode input thereto into electromagnetic waves in the TE10 mode and transmit them to the radiating network, and the radiating network is used to radiate the electromagnetic waves transmitted thereto by the feeding network into free space; the radiating network is realized by a partition structure composed of four-level metal steps arranged in a rectangular slot and a metal branch arranged above the partition structure, and the feeding network is realized based on a fully parallel fed network composed of a ridge waveguide structure, a micro-coaxial structure and a magic T.

[0005] The radiation network includes two metal plates and 16 radiation units, the two metal plates are respectively referred to as the first metal plate and the second metal plate, the first metal plate is located above the second metal plate, the first metal plate and the second metal plate are both square plates and have the same size, the first metal plate and the second metal plate are aligned and stacked together, the length direction of the two metal plates is the left-right direction, the width direction is the front-back direction, and the thickness direction is the up-down direction; each of the radiation units includes a metal branch group, a first radiation component and a second radiation component, the metal branch group is located above the first metal plate, the metal branch group includes eight metal branches that are all rectangular, and the eight metal branches are respectively referred to as the first metal branch, the second metal branch, the third metal branch, the fourth metal branch, the fifth metal branch, the sixth metal branch, the seventh metal branch and the eighth metal branch;The first metal branch node, the second metal branch node, the third metal branch node and the fourth metal branch node are exactly the same in size. The first metal branch node, the second metal branch node, the third metal branch node and the fourth metal branch node are evenly spaced in 2 rows and 2 columns, and the row direction is along the front-to-back direction, and the column direction is along the left-to-right direction, wherein the first metal branch node is located in the 1st row and the 1st column, the second metal branch node is located in the 2nd row and the 1st column, the third metal branch node is located in the 1st row and the 2nd column, the fourth metal branch node is located in the 2nd row and the 2nd column, the first metal branch node, the second metal branch node and the third metal branch node are located in the 2nd row and the 2nd column, The left end faces of the third metal branch node and the fourth metal branch node are all parallel to the plane where the left end face of the first metal plate is located, the front end faces of the first metal branch node, the second metal branch node, the third metal branch node and the fourth metal branch node are all parallel to the plane where the front end face of the first metal plate is located, the left end faces of the first metal branch node and the second metal branch node are located in the same plane, the right end faces of the third metal branch node and the fourth metal branch node are located in the same plane, the front end faces of the first metal branch node and the third metal branch node are located in the same plane, the first metal branch node and the third metal branch node are located in the same plane, The rear end faces of the metal branches are located in the same plane, the front end faces of the second metal branch and the fourth metal branch are located in the same plane, the rear end faces of the second metal branch and the fourth metal branch are located in the same plane, the lower end faces of the first metal branch, the second metal branch, the third metal branch and the fourth metal branch are all fixed on the upper end face of the first metal plate and are in a fitted state, the fifth metal branch is exactly the same size as the sixth metal branch, the fifth metal branch is located between the first metal branch and the second metal branch, and the front end face of the fifth metal branch The end face is parallel to the rear end face of the first metal branch node, and there is a distance between the two. The rear end face of the fifth metal branch node is parallel to the front end face of the second metal branch node, and there is a distance between the two. The left end face of the fifth metal branch node and the left end face of the first metal branch node are located in the same plane. The lower end face of the fifth metal branch node is fixed to the upper end face of the first metal plate and is in a bonded state. The height of the fifth metal branch node in the vertical direction is smaller than the height of the first metal branch node in the vertical direction. The length of the fifth metal branch node in the left and right direction is smaller than the length of the first metal branch node in the left and right direction.The sixth metal branch node is located between the third metal branch node and the fourth metal branch node, the front end face of the sixth metal branch node is parallel to the rear end face of the third metal branch node, and there is a distance between the two, the rear end face of the sixth metal branch node is parallel to the front end face of the fourth metal branch node, and there is a distance between the two, the right end face of the sixth metal branch node and the right end face of the third metal branch node are located in the same plane, the lower end face of the sixth metal branch node is fixed on the upper end face of the first metal plate and is in a fitted state, and the sixth metal branch node is in the up and down direction. The height of the seventh metal branch node is smaller than the height of the third metal branch node in the vertical direction, and the length of the sixth metal branch node in the left-right direction is smaller than the length of the third metal branch node in the left-right direction; the seventh metal branch node is located between the first metal branch node and the third metal branch node, the left end face of the seventh metal branch node is parallel to the right end face of the first metal branch node, and there is a distance between the two, the right end face of the seventh metal branch node is parallel to the left end face of the third metal branch node, and there is a distance between the two, and the front end face of the seventh metal branch node is located at the same position as the front end face of the first metal branch node. The lower end face of the seventh metal branch is fixed on the upper end face of the first metal plate and is in a fitted state. The upper end face of the seventh metal branch is in the same plane as the upper end face of the first metal branch. The length of the seventh metal branch along the front-to-back direction is consistent with the length of the first metal branch along the front-to-back direction. The length of the seventh metal branch along the left-to-right direction is smaller than the length of the first metal branch along the left-to-right direction. The eighth metal branch is located between the second metal branch and the fourth metal branch, and the left end face of the eighth metal branch is parallel to the The right end face of the second metal branch node is parallel to the left end face of the fourth metal branch node, and there is a distance between the two. The right end face of the eighth metal branch node is parallel to the left end face of the fourth metal branch node, and there is a distance between the two. The front end face of the eighth metal branch node and the front end face of the second metal branch node are located in the same plane. The lower end face of the eighth metal branch node is fixed to the upper end face of the first metal plate and is in a bonded state. The upper end face of the eighth metal branch node and the upper end face of the first metal branch node are located in the same plane. The rear end face of the eighth metal branch node and the rear end face of the second metal branch node are located in the same plane.The first radiation component includes a first rectangular groove, a four-level metal step, a first three-level metal step, a second three-level metal step, a first rectangular metal block and a second rectangular metal block, the front end face of the first rectangular groove is parallel to the front end face of the first metal plate, the first rectangular groove passes through the first metal plate up and down, the front end face of the first rectangular groove and the rear end face of the first metal branch are in the same plane, the rear end face of the first rectangular groove and the front end face of the second metal branch are in the same plane, and the left end face of the first rectangular groove is located at the left end face of the first metal branch. The right side of the plane where the left end face of the first rectangular groove is located and the left side of the plane where the right end face of the first metal branch is located, and the distance between the left end face of the first rectangular groove and the plane where the left end face of the first metal branch is located is equal to one-quarter of the length of the first metal branch along the left-right direction; the right end face of the first rectangular groove is located to the right side of the plane where the left end face of the third metal branch is located and the left side of the plane where the right end face of the third metal branch is located, and the distance between the right end face of the first rectangular groove and the plane where the right end face of the third metal branch is located is equal to one-quarter of the length of the third metal branch along the left-right direction;The four-level metal ladder is composed of four rectangular metal blocks, namely the third rectangular metal block, the fourth rectangular metal block, the fifth rectangular metal block and the sixth rectangular metal block. The third rectangular metal block, the fourth rectangular metal block, the fifth rectangular metal block and the sixth rectangular metal block are arranged in the first rectangular groove in order from front to back. The front end face of the third rectangular metal block is fixedly connected to the front end face of the first rectangular groove and is in a fitted state. The front end face of the fourth rectangular metal block is fixedly connected to the rear end face of the third rectangular metal block and is in a fitted state. The fifth rectangular metal block is fixedly connected to the rear end face of the third rectangular metal block and is in a fitted state. The front end face of the rectangular metal block and the rear end face of the fourth rectangular metal block are fixedly connected and in a fitted state, the front end face of the sixth rectangular metal block and the rear end face of the fifth rectangular metal block are fixedly connected and in a fitted state, the rear end face of the sixth rectangular metal block is fixedly connected and in a fitted state with the rear end face of the first rectangular groove, the left end faces of the third rectangular metal block, the fourth rectangular metal block, the fifth rectangular metal block and the sixth rectangular metal block are located in the same plane, the left end faces of the third rectangular metal block, the fourth rectangular metal block, the fifth rectangular metal block and the sixth rectangular metal block are located in the same plane, The right end surfaces are located in the same plane, the lower end surfaces of the third rectangular metal block, the fourth rectangular metal block, the fifth rectangular metal block and the sixth rectangular metal block are located in the same plane as the lower end surface of the first rectangular groove, the distance from the right end surface of the third rectangular metal block to the right end surface of the first rectangular groove is equal to the distance from the left end surface of the third rectangular metal block to the left end surface of the first rectangular groove, the upper end surface of the third rectangular metal block and the upper end surface of the first rectangular groove are located in the same plane, the width of the fourth rectangular metal block in the front-to-back direction is smaller than the width of the third rectangular metal block in the front-to-back direction, the height of the fourth rectangular metal block in the up-down direction is smaller than the height of the third rectangular metal block in the up-down direction, the width of the fifth rectangular metal block in the front-to-back direction is larger than the width of the fourth rectangular metal block in the front-to-back direction, the height of the fifth rectangular metal block in the up-down direction is smaller than the height of the fourth rectangular metal block in the up-down direction, the width of the sixth rectangular metal block in the front-to-back direction is smaller than the width of the fifth rectangular metal block in the front-to-back direction, and the height of the fifth rectangular metal block in the up-down direction is smaller than the height of the fourth rectangular metal block in the up-down direction;The first three-level metal ladder includes a seventh rectangular metal block, an eighth rectangular metal block and a ninth rectangular metal block. The seventh rectangular metal block, the eighth rectangular metal block and the ninth rectangular metal block are arranged in order from right to left. The right end face of the seventh rectangular metal block is fixedly connected to the right end face of the first rectangular groove and is in a fitted state. The distance from the front end face of the seventh rectangular metal block to the front end face of the first rectangular groove is equal to the distance from the rear end face of the seventh rectangular metal block to the rear end face of the first rectangular groove. The right end face of the eighth rectangular metal block is fixed to the left end face of the seventh rectangular metal block. The ninth rectangular metal block is connected and in a fitted state, the right end face of the ninth rectangular metal block is fixedly connected and in a fitted state with the left end face of the eighth rectangular metal block, the upper end face of the seventh rectangular metal block is flush with the upper end face of the first rectangular groove, the lower end faces of the seventh rectangular metal block, the eighth rectangular metal block and the ninth rectangular metal block are all flush with the lower end face of the first rectangular groove, the height of the eighth rectangular metal block along the up-down direction is smaller than the height of the seventh rectangular metal block along the up-down direction, the height of the ninth rectangular metal block along the up-down direction is smaller than the height of the eighth rectangular metal block along the up-down direction, and the The width of the eighth rectangular metal block in the left-right direction is greater than the width of the seventh rectangular metal block in the left-right direction, the width of the ninth rectangular metal block in the left-right direction is greater than the width of the eighth rectangular metal block in the left-right direction, the second three-level metal steps and the first three-level metal steps are symmetrical with respect to the symmetry plane of the first rectangular groove in the front-back direction; the first rectangular metal block is located on the right side of the four-level metal steps and on the left side of the first three-level metal steps, the left end face of the first rectangular metal block is fixedly connected to the right end face of the third rectangular metal block and is in a fitted state, the first rectangular The front end face of the rectangular metal block is located in front of the plane where the rear end face of the fourth rectangular metal block is located, and there is a distance between the two. The rear end face of the first rectangular metal block is located in front of the plane where the rear end face of the fifth rectangular metal block is located, and there is a distance between the two. The lower end face of the first rectangular metal block is flush with the lower end face of the third rectangular metal block. The height of the first rectangular metal block in the vertical direction is smaller than the height of the third rectangular metal block in the vertical direction. The second rectangular metal block is symmetrical with the first rectangular metal block relative to the symmetry plane of the first rectangular groove in the front-to-back direction.The second radiation component includes a second rectangular groove, a third rectangular groove, a tenth rectangular metal block and an eleventh rectangular metal block. The second rectangular groove and the third rectangular groove are opened on the second metal plate and pass through the second metal plate from top to bottom. The second rectangular groove and the third rectangular groove are spaced apart from each other. The front end face of the second rectangular groove and the front end face of the third rectangular groove are parallel to the front end face of the first rectangular groove. The front end face of the second rectangular groove is located on the rear side of the plane where the front end face of the first rectangular groove is located, and there is a distance between the two. The front end face of the third rectangular groove is located on the rear side of the plane where the front end face of the first rectangular groove is located, and there is a distance between the two. The rear end face of the second rectangular groove and the rear end face of the third rectangular groove are parallel to the rear end face of the first rectangular groove. The rear end face of the second rectangular groove is located on the rear side of the plane where the front end face of the first rectangular groove is located, and there is a distance between the two. The rear end face of the first rectangular groove is located on the front side of the plane where the rear end face of the first rectangular groove is located, and there is a distance between the two; the rear end face of the third rectangular groove is located on the front side of the plane where the rear end face of the first rectangular groove is located, and there is a distance between the two; the left end face of the second rectangular groove is parallel to the left end face of the first rectangular groove, the left end face of the second rectangular groove is located on the right side of the plane where the left end face of the first rectangular groove is located, and there is a distance between the two; the left end face of the third rectangular groove is located on the right side of the plane where the right end face of the second rectangular groove is located, and there is a distance between the two; the right end face of the second rectangular groove is parallel to the right end face of the first rectangular groove, the right end face of the second rectangular groove is located on the left side of the right end face of the first rectangular groove, and there is a distance between the two; the right end face of the third rectangular groove is located on the right side of the right end face of the second rectangular groove, and there is a distance between the two;The ninth rectangular metal block is located in the second rectangular groove, the upper end face of the ninth rectangular metal block is flush with the upper end face of the second rectangular groove, the lower end face of the tenth rectangular metal block is flush with the lower end face of the second rectangular groove, the left end face of the tenth rectangular metal block is connected to the left end face of the second rectangular groove and is in a fitted state, the tenth rectangular metal block is front-to-back symmetrical with respect to the symmetry plane of the second rectangular groove along the left-right direction, the length of the tenth rectangular metal block along the front-to-back direction is smaller than the length of the second rectangular groove along the front-to-back direction, and the length of the tenth rectangular metal block along the left-to-right direction is smaller than the length of the second rectangular groove along the left-to-right direction. The eleventh rectangular metal block is located in the third rectangular groove, the upper end face of the eleventh rectangular metal block is flush with the upper end face of the third rectangular groove, the lower end face of the eleventh rectangular metal block is flush with the lower end face of the third rectangular groove, the right end face of the eleventh rectangular metal block is connected to the right end face of the third rectangular groove and is in a fitted state, the eleventh rectangular metal block is symmetrical front to back with respect to the symmetry plane of the third rectangular groove along the left and right directions, the length of the eleventh rectangular metal block along the front and back directions is smaller than the length of the third rectangular groove along the front and back directions, and the length of the eleventh rectangular metal block along the left and right directions is longer than the length of the third rectangular groove along the left and right directions The length in the direction is small; the upper end face of the first rectangular slot is the output port of the radiation unit, the lower end face of the second rectangular slot is the first input port of the radiation unit, the lower end face of the third rectangular slot is the second input port of the radiation unit, the first input port of the radiation unit is used to access the electromagnetic wave of the TE10 mode, the second input port of the radiation unit is used to access the electromagnetic wave of the TE10 mode, and the output port of the radiation unit is used to radiate the electromagnetic wave of the TE10 mode to the free space; the 16 radiation units are distributed in 4 rows and 4 columns, and the row direction is along the front-to-back direction, the column direction is along the left-to-right direction, and every two adjacent ones in the same row The spacing between the first rectangular slots of the radiation units is 19 mm, the spacing between the first rectangular slots of two adjacent radiation units in the same column is 19 mm, and for every two adjacent radiation units in the same row, the left end surface of the first metal branch node of the metal branch node group of the radiation units in the latter column completely overlaps with the right end surface of the third metal branch node of the metal branch node group of the radiation units in the previous column, the left end surface of the fifth metal branch node of the metal branch node group of the radiation units in the latter column completely overlaps with the right end surface of the sixth metal branch node of the metal branch node group of the radiation units in the previous column, and the left end surface of the second metal branch node of the metal branch node group of the radiation units in the latter column completely overlaps with the right end surface of the fourth metal branch node of the metal branch node group of the radiation units in the previous column;For every two adjacent radiating elements in the same column, the front face of the first metal branch of the metal branch group of the radiating element in the next row completely overlaps with the rear face of the second metal branch of the metal branch group of the radiating element in the previous row, the front face of the seventh metal branch of the metal branch group of the radiating element in the next row completely overlaps with the rear face of the eighth metal branch of the metal branch group of the radiating element in the previous row, and the front face of the third metal branch of the metal branch group of the radiating element in the next row completely overlaps with the rear face of the fourth metal branch of the metal branch group of the radiating element in the previous row. This radiating network adopts an all-metal structure, eliminating dielectric loss, thereby achieving high gain and high efficiency. At the same time, each radiating element of this radiating network is designed based on a partition structure and metal branches, and metal rectangular blocks are added inside for multi-level matching, thereby achieving a wide bandwidth effect.

[0006] The feed network includes a third metal plate, a first feed assembly and a second feed assembly, wherein the first feed assembly and the second feed assembly are both arranged on the third metal plate; the third metal plate is located below the second metal plate, the third metal plate is a square plate, the third metal plate and the second metal plate have the same size, the front end surface of the third metal plate is aligned vertically with the front end surface of the second metal plate, the rear end surface of the third metal plate is aligned vertically with the rear end surface of the second metal plate, and the left end surface of the third metal plate is aligned vertically with the left end surface of the second metal plate. The right end surface of the third metal plate is aligned vertically with the right end surface of the second metal plate; the first feeding assembly includes a magic T and two adapters; the two adapters are called the first adapter and the second adapter; the magic T is a magic T based on a ridge waveguide structure, including an H-plane to E-plane coaxial to double-ridge structure, a Y-shaped power divider based on a ridge waveguide structure, and an H-plane coaxial to single-ridge structure; the H-plane to E-plane coaxial to double-ridge structure includes three rectangular grooves opened on the third metal plate, a twelfth rectangular metal block, a thirteenth rectangular metal block, a first two-level metal step, and a first coaxial structure;The three rectangular grooves are respectively called the fourth rectangular groove, the fifth rectangular groove and the sixth rectangular groove. The lower end face of the fourth rectangular groove is located above the lower end face of the third metal plate, and there is a distance between the two. The upper end face of the fourth rectangular groove is located below the upper end face of the third metal plate, and there is a distance between the two. The symmetry plane of the fourth rectangular groove along the left-right direction coincides with the symmetry plane of the third metal plate along the left-right direction. The symmetry plane of the fourth rectangular groove along the front-back direction is located on the left side of the symmetry plane of the third metal plate along the front-back direction, and there is a distance between the two. The left end face of the fourth rectangular groove is located on the right side of the left end face of the third metal plate, and there is a distance between the two. The right end face of the rectangular groove is located on the left side of the right end face of the third metal plate, and there is a distance between the two. The fifth rectangular groove is located on the rear side of the fourth rectangular groove. The front end face of the fifth rectangular groove is connected to the rear end face of the fourth rectangular groove and is in a fitted state. The upper end face of the fifth rectangular groove is located below the upper end face of the fourth rectangular groove, and there is a distance between the two. The lower end face of the fifth rectangular groove is flush with the lower end face of the fourth rectangular groove. The left end face of the fifth rectangular groove is flush with the left end face of the fourth rectangular groove. The right end face of the fifth rectangular groove is flush with the right end face of the fourth rectangular groove. The width of the fifth rectangular groove along the front-to-back direction is greater than that of the fourth rectangular groove along the front-to-back direction. The width is large, the sixth rectangular groove is located at the rear side of the fifth rectangular groove, the front end surface of the sixth rectangular groove is in a fit state with the rear end surface of the fifth rectangular groove, the upper end surface of the sixth rectangular groove is flush with the upper end surface of the fifth rectangular groove, the lower end surface of the sixth rectangular groove is flush with the lower end surface of the fifth rectangular groove, the width of the sixth rectangular groove along the front-to-back direction is larger than the width of the fifth rectangular groove along the front-to-back direction, the left end surface of the sixth rectangular groove is located on the left side of the plane where the left end surface of the fifth rectangular groove is located, and there is a distance between the two, the right end surface of the sixth rectangular groove is located on the right side of the plane where the right end surface of the fifth rectangular groove is located, and there is a distance between the two; the twelfth rectangular metal The metal block is located in the fourth rectangular groove, the front end face of the twelfth rectangular metal block is connected to the front end face of the fourth rectangular groove and the two are in a fitted state; the rear end face of the twelfth rectangular metal block is located in front of the rear end face of the fourth rectangular groove, and there is a distance between the two; the left end face of the twelfth rectangular metal block is located to the right of the left end face of the fourth rectangular groove, and there is a distance between the two; the right end face of the twelfth rectangular metal block is located to the left of the right end face of the fourth rectangular groove, and there is a distance between the two; the upper end face of the twelfth rectangular metal block is flush with the upper end face of the fourth rectangular groove; the lower end face of the twelfth rectangular metal block is flush with the lower end face of the fourth rectangular groove;The thirteenth rectangular metal block is located in the fourth rectangular groove, the thirteenth rectangular metal block is located on the rear side of the twelfth rectangular metal block, the rear end face of the thirteenth rectangular metal block is connected to the rear end face of the fourth rectangular groove and the two are in a fitted state; the front end face of the thirteenth rectangular metal block is located on the rear side of the rear end face of the twelfth rectangular metal block, and there is a distance between the two, the left end face of the thirteenth rectangular metal block is flush with the left end face of the twelfth rectangular metal block, and the right end face of the thirteenth rectangular metal block is flush with the right end face of the twelfth rectangular metal block; the upper end face of the thirteenth rectangular metal block is flush with the upper end face of the fourth rectangular groove flat; the lower end face of the thirteenth rectangular metal block is located above the lower end face of the fourth rectangular groove, and there is a distance between the two; the first two-level metal ladder includes a fourteenth rectangular metal block and a fifteenth rectangular metal block, the fourteenth rectangular metal block is located in the fifth rectangular groove, and the upper end face of the fourteenth rectangular metal block is flush with the upper end face of the fifth rectangular groove; the lower end face of the fourteenth rectangular metal block is flush with the lower end face of the thirteenth rectangular metal block; the front end face of the fourteenth rectangular metal block is connected to the rear end face of the thirteenth rectangular metal block and the two are in a fitted state; the left end face of the fourteenth rectangular metal block is located on the left end face of the fifth rectangular groove and there is a distance between them; the right end face of the fourteenth rectangular metal block is located on the left side of the right end face of the fifth rectangular groove, and there is a distance between them; the width of the fourteenth rectangular metal block in the front-to-back direction is smaller than the width of the fifth rectangular groove in the front-to-back direction, and the length of the fourteenth rectangular metal block in the left-to-right direction is smaller than the length of the fifth rectangular groove in the left-to-right direction; the fifteenth rectangular metal block is located in the fifth rectangular groove and the sixth rectangular groove, and the upper end face of the fifteenth rectangular metal block is respectively connected to the upper end face of the fifth rectangular groove and the upper end face of the sixth rectangular groove and is in a fitted state; the lower end face of the fifteenth rectangular metal block The first and second rectangular metal blocks are located above the lower end face of the fifth rectangular groove and the lower end face of the sixth rectangular groove, and the distance between the lower end face of the fifteenth rectangular metal block and the lower end face of the fifth rectangular groove and the lower end face of the sixth rectangular groove is equal; the front end face of the fifteenth rectangular metal block is connected to the rear end face of the fourteenth rectangular metal block and the two are in a bonded state; the left end face of the fifteenth rectangular metal block is flush with the left end face of the fourteenth rectangular metal block; the right end face of the fifteenth rectangular metal block is flush with the right end face of the fourteenth rectangular metal block; the rear end face of the fifteenth rectangular metal block is located between the front end face of the sixth rectangular groove and the rear end face of the sixth rectangular groove;The first coaxial structure includes a first cylindrical groove and a first cylindrical metal block, the first cylindrical groove is opened in the third metal plate, the first cylindrical groove is located below the sixth rectangular groove, the upper end face of the first cylindrical groove and the lower end face of the sixth rectangular groove are located in the same plane, the axis of the first cylindrical groove is located on the rear side of the plane where the front end face of the sixth rectangular groove is located, and there is a distance between the two, the axis of the first cylindrical groove is located on the front side of the plane where the rear end face of the sixth rectangular groove is located, and there is a distance between the two, the axis of the first cylindrical groove is located on the right side of the plane where the left end face of the sixth rectangular groove is located, and there is a distance between the two, the first cylindrical The axis of the rectangular groove is located on the left side of the plane where the right end face of the sixth rectangular groove is located, and there is a distance between the two. The lower end face of the first cylindrical groove is located above the lower end face of the third metal plate, and there is a distance between the two. The first cylindrical metal block is arranged in the first cylindrical groove and the sixth rectangular groove. The first cylindrical metal block is coaxial with the first cylindrical groove. The radius of the first cylindrical metal block is smaller than the radius of the cylindrical groove. The upper end face of the first cylindrical metal block is connected to the lower end face of the fifteenth rectangular metal block and the two are in a fitted state. The lower end face of the first cylindrical metal block is connected to the lower end face of the first cylindrical groove and the two are in a fitted state. The upper end faces of the four rectangular grooves are the output ports of the H-plane to E-plane coaxial to double-ridge structure, and the lower end faces of the cylindrical grooves are the input ports of the H-plane to E-plane coaxial to double-ridge structure; the Y-type power divider has one input port and two output ports, and the Y-type power divider is realized by slotting on the third metal plate; the H-plane coaxial to single-ridge structure includes two rectangular grooves opened on the third metal plate, a sixteenth rectangular metal block, a seventeenth rectangular metal block, an eighteenth rectangular metal block and a second coaxial structure; the two rectangular grooves are respectively called the seventh rectangular groove and the eighth rectangular groove, the lower end face of the seventh rectangular groove and the upper end face of the fourth rectangular groove are located in the same plane, and the right end face of the seventh rectangular groove is located on the fourth rectangular groove The left side of the plane where the left end face of the seventh rectangular groove is located, and there is a distance between the two; the front end face of the seventh rectangular groove is located in front of the plane where the front end face of the fourth rectangular groove is located, and there is a distance between the two; the rear end face of the seventh rectangular groove is located on the rear side of the plane where the rear end face of the fourth rectangular groove is located, and there is a distance between the two; the distance between the front end face of the seventh rectangular groove and the plane where the front end face of the fourth rectangular groove is located is equal to the distance between the rear end face of the seventh rectangular groove and the plane where the rear end face of the fourth rectangular groove is located, the upper end face of the seventh rectangular groove is located below the upper end face of the third metal plate, and the length of the seventh rectangular groove in the left-right direction is greater than the length of the fourth rectangular groove in the left-right direction;The height of the seventh rectangular groove in the up-down direction is smaller than the height of the fourth rectangular groove in the up-down direction; the edge of the left rear side of the seventh rectangular groove is chamfered; the eighth rectangular groove is located on the front side of the seventh rectangular groove, the left end face of the eighth rectangular groove is flush with the left end face of the seventh rectangular groove, the right end face of the eighth rectangular groove is located on the left side of the plane where the right end face of the seventh rectangular groove is located, and there is a distance between the two; the upper end face of the eighth rectangular groove is flush with the upper end face of the seventh rectangular groove, the lower end face of the eighth rectangular groove is flush with the lower end face of the seventh rectangular groove, and the rear end face of the eighth rectangular groove is flush with the front end face of the seventh rectangular groove The end faces are connected and the two are in a fitted state; the width of the eighth rectangular groove along the front-to-back direction is larger than the width of the seventh rectangular groove along the front-to-back direction; the sixteenth rectangular metal block is located in the seventh rectangular groove, the right end face of the sixteenth rectangular metal block is connected to the right end face of the seventh rectangular groove and the two are in a fitted state, the upper end face of the sixteenth rectangular metal block is flush with the upper end face of the seventh rectangular groove, the lower end face of the sixteenth rectangular metal block is located above the lower end face of the seventh rectangular groove, and there is a distance between the two, the front end face of the sixteenth rectangular metal block is located behind the front end face of the seventh rectangular groove, and there is a distance between the two; the The rear end face of the sixteenth rectangular metal block is located in front of the rear end face of the seventh rectangular groove, and there is a distance between the two; the left front edge of the sixteenth rectangular metal block is chamfered, and the left rear edge is chamfered; the seventeenth rectangular metal block is located in the seventh rectangular groove, the seventeenth rectangular metal block is located in the front side of the sixteenth rectangular metal block, the left end face of the seventeenth rectangular metal block is flush with the left end face of the sixteenth rectangular metal block, the rear end face of the seventeenth rectangular metal block is connected to the front end face of the sixteenth rectangular metal block and the two are in a fitted state; the upper end face of the seventeenth rectangular metal block is aligned with the upper end face of the sixteenth rectangular metal block the surfaces of the seventeenth rectangular metal block are flush with each other, the lower end surface of the seventeenth rectangular metal block is flush with the lower end surface of the sixteenth rectangular metal block, the right end surface of the seventeenth rectangular metal block is located on the left side of the plane where the right end surface of the sixteenth rectangular metal block is located, and there is a distance between the two; the width of the seventeenth rectangular metal block in the front-to-back direction is greater than the width of the sixteenth rectangular metal block in the front-to-back direction, the eighteenth rectangular metal block is located in the seventh rectangular groove and the eighth rectangular groove, the eighteenth rectangular metal block is located on the front side of the seventeenth rectangular metal block, the rear end surface of the eighteenth rectangular metal block is connected to the front end surface of the seventeenth rectangular metal block, and the two are in a bonded state;The upper end face of the eighteenth rectangular metal block is flush with the upper end face of the seventeenth rectangular metal block, the lower end face of the eighteenth rectangular metal block is flush with the lower end face of the seventeenth rectangular metal block, the front end face of the eighteenth rectangular metal block is located behind the front end face of the eighth rectangular groove, and there is a distance between the two; the left end face of the eighteenth rectangular metal block is located to the right of the plane where the left end face of the seventeenth rectangular metal block is located, and there is a distance between the two; the right end face of the eighteenth rectangular metal block is located to the left of the plane where the right end face of the seventeenth rectangular metal block is located, and there is a distance between the two; the tenth The width of the eight rectangular metal blocks along the front-to-back direction is greater than the width of the seventeenth rectangular metal block along the front-to-back direction; the second coaxial structure includes a second cylindrical groove and a second cylindrical metal block, the second cylindrical groove is opened in the third metal plate, the second cylindrical groove is located below the eighth rectangular groove, the upper end face of the second cylindrical groove and the lower end face of the eighth rectangular groove are located in the same plane, the axis of the second cylindrical groove is located on the rear side of the plane where the front end face of the eighth rectangular groove is located, and there is a distance between the two, the axis of the second cylindrical groove is located on the front side of the plane where the rear end face of the eighth rectangular groove is located, and the two There is a distance between them, the axis of the second cylindrical groove is located on the right side of the plane where the left end face of the eighth rectangular groove is located, and there is a distance between the two, the axis of the second cylindrical groove is located on the left side of the plane where the right end face of the eighth rectangular groove is located, and there is a distance between the two, the distance between the axis of the second cylindrical groove and the plane where the left end face of the eighth rectangular groove is located is equal to the distance between the axis of the second cylindrical groove and the plane where the right end face of the eighth rectangular groove is located, the lower end face of the second cylindrical groove is located above the lower end face of the third metal plate, and there is a distance between the two; the second cylindrical metal The block is arranged in the second cylindrical groove and the eighth rectangular groove, the second cylindrical metal block is coaxial with the second cylindrical groove, the radius of the second cylindrical metal block is smaller than the radius of the second cylindrical groove, the upper end surface of the second cylindrical metal block is connected to the lower end surface of the eighteenth rectangular metal block and the two are in a fitted state, the lower end surface of the second cylindrical metal block is connected to the lower end surface of the second cylindrical groove and the two are in a fitted state, the front end surface of the seventh rectangular groove is the output port of the coaxial to single ridge structure of the H surface, and the lower surface of the second cylindrical groove is the input port of the coaxial to single ridge structure of the H surface;The input port of the H-plane to E-plane coaxial to double-ridge structure is the first input port of the magic T, the input port of the H-plane coaxial to single-ridge structure is the second input port of the magic T, the output port of the H-plane to E-plane coaxial to double-ridge structure and the output port of the H-plane coaxial to single-ridge structure are both connected to the input port of the Y-type power divider, and the two output ports of the Y-type power divider serve as the two output ports of the magic T. The first adapter and the second adapter respectively have an input port and an output port. The first adapter and the second adapter are used to perform the conversion from a single-ridge waveguide structure to a micro-coaxial structure. The two output ports of the magic T are respectively connected to the input ports of the first adapter and the second adapter. The first input port of the magic T serves as the first input port of the first feeding component, and the second input port of the magic T serves as the first input port of the first feeding component. The port serves as the second input port of the first feeding component, the output port of the first adapter serves as the first output port of the first feeding component, and the output port of the second adapter serves as the second output port of the first feeding component; the second feeding component includes two one-to-sixteen power dividers based on a micro-coaxial structure and two groups of adapters; the two one-to-sixteen power dividers are respectively called the first power divider and the second power divider; the first power divider and the second power divider have one input port and sixteen output ports respectively; the first power divider and the second power divider are respectively realized by slotting the third metal plate, and the two groups of micro adapters are respectively called the first group of adapters and the second group of adapters; the first group of adapters consists of 16 identical third adapters, and the third adapter is used for switching from a micro-coaxial structure to a single-ridge structure, and the third adapter has one input port and one output port. The 16 third adapters are evenly spaced in 4 rows and 4 columns, with the row direction along the front-to-back direction and the column direction along the left-to-right direction. The spacing between each two adjacent third adapters in the same row is 19 mm, and the spacing between each two adjacent third adapters in the same column is 19 mm. The input ports of the 16 third adapters are connected one-to-one with the 16 output ports of the first power divider. The second group of adapters consists of 16 identical fourth adapters, which are used for connecting the micro-coaxial structure to the single-ridge structure. The fourth adapter has one input port and one output port. The 16 fourth adapters are evenly spaced in 4 rows and 4 columns, with the row direction along the front-to-back direction and the column direction along the left-to-right direction. The spacing between each two adjacent fourth adapters in the same row is 19 mm, and the spacing between each two adjacent fourth adapters in the same column is 19 mm.The input ports of the 16 fourth adapters are connected one-to-one with the 16 output ports of the second power divider, the input port of the first power divider is the first input port of the second feeding assembly, the input port of the second power divider is the second input port of the second feeding assembly, the output ports of the 16 third adapters are the first group of output ports of the second feeding assembly, the output ports of the 16 fourth adapters are the second group of output ports of the second feeding assembly, the first output port of the first feeding assembly is connected to the first input port of the second feeding assembly, the second output port of the first feeding assembly is connected to the second input port of the second feeding assembly, the first input port of the first feeding assembly serves as the first input port of the broadband dual-polarized antenna array, the second input port of the first feeding assembly serves as the second input port of the broadband dual-polarized antenna array, the first group of output ports of the second feeding assembly is connected one-to-one with the first input ports of the 16 radiating elements, and the second group of output ports of the second feeding assembly is connected one-to-one with the second input ports of the 16 radiating elements. The feed network adopts an all-metal structure, eliminating dielectric loss and thus achieving high gain and high efficiency. The feed network adopts a micro-coaxial structure to make the whole more compact. At the same time, the presence of the magic T enables the generation of in-phase and out-of-phase electromagnetic waves in a limited space and simple structure, realizing dual-polarization feeding function.

[0007] Compared with the prior art, the advantage of the present invention is that a radiation network is realized by arranging a partition structure composed of four levels of metal steps in a rectangular slot in combination with metal branches arranged above the partition structure, and a feeding network is realized based on a full parallel feed network composed of a ridge waveguide structure, a micro-coaxial structure and a magic T. The feeding network is simultaneously excited by the magic T, so that each radiating unit of the radiation network obtains an equal-amplitude same-direction and equal-amplitude reverse excitation signal. The radiation network realized by the partition with external metal branches converts the signal into the required orthogonal dual-polarization form, eliminates the gain zero point within the bandwidth, and realizes broadband stable dual-polarization radiation. Therefore, the present invention has high gain and high efficiency while the bandwidth can cover the Ku band, meeting the Ku band satellite communication requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 A three-dimensional diagram of a radiation network of a broadband dual-polarized antenna array according to the present invention;

[0009] Figure 2 An exploded diagram of the radiation network of the broadband dual-polarized antenna array of the present invention;

[0010] Figure 3 A three-dimensional diagram of a radiating unit of a radiating network of a broadband dual-polarized antenna array according to the present invention;

[0011] Figure 4 An exploded view of a radiating element of a radiating network of a broadband dual-polarized antenna array according to the present invention;

[0012] Figure 5 Decomposition of the first radiating element of the radiating network of the broadband dual-polarized antenna array of the present invention Figure 1 ;

[0013] Figure 6 Decomposition of the first radiating element of the radiating network of the broadband dual-polarized antenna array of the present invention Figure 2 ;

[0014] Figure 7 A three-dimensional diagram of a feeding network of a radiation network of a broadband dual-polarized antenna array of the present invention;

[0015] Figure 8 An exploded view of a feed network of a radiating network of a broadband dual-polarized antenna array according to the present invention;

[0016] Figure 9 A partially exploded and enlarged diagram of a feed network of a radiation network of a broadband dual-polarized antenna array of the present invention;

[0017] Figure 10 4 is a gain curve simulation diagram of the broadband dual-polarized antenna array of the present invention;

[0018] Figure 11 This is a simulation diagram of the reflection coefficient curve of the broadband dual-polarization antenna array of the present invention. DETAILED DESCRIPTION

[0019] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0020] Example 1: Figure 1 As shown, a broadband dual-polarization antenna array includes a radiating network and a feeding network. The feeding network is used to convert the electromagnetic waves in the TEM mode input thereto into electromagnetic waves in the TE10 mode and transmit them to the radiating network. The radiating network is used to radiate the electromagnetic waves transmitted thereto by the feeding network into free space. The radiating network is realized by a partition structure composed of four metal steps arranged in a rectangular slot and a metal branch arranged above the partition structure. The feeding network is realized based on a full parallel feed network composed of a ridge waveguide structure, a micro-coaxial structure and a magic T29.

[0021] Example 2: This example is basically the same as Example 1, except that: Figures 2 to 6As shown, in this embodiment, the radiation network includes two metal plates and 16 radiation units, the two metal plates are respectively referred to as the first metal plate 1 and the second metal plate 2, the first metal plate 1 is located above the second metal plate 2, the first metal plate 1 and the second metal plate 2 are both square plates, and the two have the same size, the first metal plate 1 and the second metal plate 2 are aligned and stacked together, the length direction of the two metal plates is the left-right direction, the width direction is the front-back direction, and the thickness direction is the up-down direction; each radiation unit includes a metal branch group 3, a first radiation component 4 and a second radiation component 5, the metal branch group 3 is located above the first metal plate 1, and the metal branch group 3 includes eight metal branches, which are all rectangular. The eight metal branches are respectively referred to as the first metal branch 6, the second metal branch 7, the third metal branch 8, the fourth metal branch 9, the fifth metal branch 10, the sixth metal branch 11, the seventh metal branch 12 and the eighth metal branch 13;The first metal branch node 6, the second metal branch node 7, the third metal branch node 8 and the fourth metal branch node 9 are exactly the same in size. The first metal branch node 6, the second metal branch node 7, the third metal branch node 8 and the fourth metal branch node 9 are evenly spaced in 2 rows and 2 columns, and the row direction is along the front-to-back direction, and the column direction is along the left-to-right direction. The first metal branch node 6 is located in the 1st row and the 1st column, the second metal branch node 7 is located in the 2nd row and the 1st column, the third metal branch node 8 is located in the 1st row and the 2nd column, and the fourth metal branch node 9 is located in the 2nd row and the 2nd column. The left end faces of the branch node 8 and the fourth metal branch node 9 are parallel to the plane where the left end face of the first metal plate 1 is located. The front end faces of the first metal branch node 6, the second metal branch node 7, the third metal branch node 8 and the fourth metal branch node 9 are parallel to the plane where the front end face of the first metal plate 1 is located. The left end faces of the first metal branch node 6 and the second metal branch node 7 are located in the same plane. The right end faces of the third metal branch node 8 and the fourth metal branch node 9 are located in the same plane. The front end faces of the first metal branch node 6 and the third metal branch node 8 are located in the same plane. The rear end faces of the first metal branch node 6 and the third metal branch node 8 are located in the same plane. The front end faces of the second metal branch node 7 and the fourth metal branch node 9 are located in the same plane, the rear end faces of the second metal branch node 7 and the fourth metal branch node 9 are located in the same plane, the lower end faces of the first metal branch node 6, the second metal branch node 7, the third metal branch node 8 and the fourth metal branch node 9 are all fixed on the upper end face of the first metal plate 1 and are in a fitted state, the fifth metal branch node 10 and the sixth metal branch node 11 are exactly the same in size, the fifth metal branch node 10 is located between the first metal branch node 6 and the second metal branch node 7, the front end face of the fifth metal branch node 10 is parallel to the rear end face of the first metal branch node 6, and the two The distance between them is 6.5 mm, the rear end face of the fifth metal branch node 10 is parallel to the front end face of the second metal branch node 7, and the distance between the two is 6.5 mm, the left end face of the fifth metal branch node 10 and the left end face of the first metal branch node 6 are located in the same plane, the lower end face of the fifth metal branch node 10 is fixed to the upper end face of the first metal plate 1 and is in a bonded state, the height of the fifth metal branch node 10 in the vertical direction is 2 mm smaller than the height of the first metal branch node 6 in the vertical direction, and the length of the fifth metal branch node 10 in the left and right direction is 0.5 mm smaller than the length of the first metal branch node 6 in the left and right direction;The sixth metal branch node 11 is located between the third metal branch node 8 and the fourth metal branch node 9. The front end face of the sixth metal branch node 11 is parallel to the rear end face of the third metal branch node 8, and the distance between the two is 6.5 mm. The rear end face of the sixth metal branch node 11 is parallel to the front end face of the fourth metal branch node 9, and the distance between the two is 6.5 mm. The right end face of the sixth metal branch node 11 and the right end face of the third metal branch node 8 are located in the same plane. The lower end face of the sixth metal branch node 11 is fixed on the upper end face of the first metal plate 1 and is in a fitted state. The height of the sixth metal branch node 11 in the up and down direction is 1.5mm. The height of the third metal branch node 8 along the vertical direction is 2mm smaller, and the length of the sixth metal branch node 11 along the left-right direction is 0.5mm smaller than the length of the third metal branch node 8 along the left-right direction; the seventh metal branch node 12 is located between the first metal branch node 6 and the third metal branch node 8, the left end face of the seventh metal branch node 12 is parallel to the right end face of the first metal branch node 6, and the distance between the two is 6.75mm, the right end face of the seventh metal branch node 12 is parallel to the left end face of the third metal branch node 8, and the distance between the two is 6.75mm, and the front end face of the seventh metal branch node 12 is parallel to the front end face of the first metal branch node 6. The end faces are located in the same plane, the lower end face of the seventh metal branch node 12 is fixed to the upper end face of the first metal plate 1 and is in a fitted state, the upper end face of the seventh metal branch node 12 is located in the same plane as the upper end face of the first metal branch node 6, and the length of the seventh metal branch node 12 along the front-to-back direction is consistent with the length of the first metal branch node 6 along the front-to-back direction; the length of the seventh metal branch node 12 along the left-to-right direction is 0.5 mm smaller than the length of the first metal branch node 6 along the left-to-right direction; the eighth metal branch node 13 is located between the second metal branch node 7 and the fourth metal branch node 9, and the left end face of the eighth metal branch node 13 is parallel to the second metal branch node 7. The right end face of the eighth metal branch node 13 is parallel to the left end face of the fourth metal branch node 9, and the distance between the two is 6.75 mm. The front end face of the eighth metal branch node 13 is in the same plane as the front end face of the second metal branch node 7. The lower end face of the eighth metal branch node 13 is fixed to the upper end face of the first metal plate 1 and is in a bonded state. The upper end face of the eighth metal branch node 13 is in the same plane as the upper end face of the first metal branch node 6. The rear end face of the eighth metal branch node 13 is in the same plane as the rear end face of the second metal branch node 7.The first radiation component 4 includes a first rectangular slot 14, a four-level metal step, a first three-level metal step, a second three-level metal step, a first rectangular metal block 15 and a second rectangular metal block 16, the front end face of the first rectangular slot 14 is parallel to the front end face of the first metal plate 1, the first rectangular slot 14 passes through the first metal plate 1 up and down, the front end face of the first rectangular slot 14 and the rear end face of the first metal branch 6 are located in the same plane, the rear end face of the first rectangular slot 14 and the front end face of the second metal branch 7 are located in the same plane, and the left end face of the first rectangular slot 14 is located at the first metal branch. 6 and to the left of the plane where the right end face of the first metal branch node 6 is located, and the distance between the left end face of the first rectangular groove 14 and the plane where the left end face of the first metal branch node 6 is located is equal to one-fourth of the length of the first metal branch node 6 along the left-right direction, the right end face of the first rectangular groove 14 is located to the right of the plane where the left end face of the third metal branch node 8 is located and to the left of the plane where the right end face of the third metal branch node 8 is located, and the distance between the right end face of the first rectangular groove 14 and the plane where the right end face of the third metal branch node 8 is located is equal to one-fourth of the length of the third metal branch node 8 along the left-right direction;The four-level metal ladder consists of four rectangular metal blocks, namely the third rectangular metal block 17, the fourth rectangular metal block 18, the fifth rectangular metal block 19 and the sixth rectangular metal block 20. The third rectangular metal block 17, the fourth rectangular metal block 18, the fifth rectangular metal block 19 and the sixth rectangular metal block 20 are arranged in the first rectangular groove 14 in order from front to back. The front end face of the third rectangular metal block 17 is fixedly connected to the front end face of the first rectangular groove 14 and is in a fitted state. The front end face of the fourth rectangular metal block 18 is fixedly connected to the rear end face of the third rectangular metal block 17 and is in a fitted state. The fifth rectangular metal block 20 is fixedly connected to the rear end face of the third rectangular metal block 17 and is in a fitted state. The front end face of the block 19 is fixedly connected to the rear end face of the fourth rectangular metal block 18 and is in a fitted state. The front end face of the sixth rectangular metal block 20 is fixedly connected to the rear end face of the fifth rectangular metal block 19 and is in a fitted state. The rear end face of the sixth rectangular metal block 20 is fixedly connected to the rear end face of the first rectangular groove 14 and is in a fitted state. The left end faces of the third rectangular metal block 17, the fourth rectangular metal block 18, the fifth rectangular metal block 19 and the sixth rectangular metal block 20 are located in the same plane. The right end faces of the third rectangular metal block 17, the fourth rectangular metal block 18, the fifth rectangular metal block 19 and the sixth rectangular metal block 20 are located in the same plane. The lower end faces of the third rectangular metal block 17, the fourth rectangular metal block 18, the fifth rectangular metal block 19 and the sixth rectangular metal block 20 are located in the same plane as the lower end face of the first rectangular groove 14. The distance from the right end face of the third rectangular metal block 17 to the right end face of the first rectangular groove 14 is equal to the distance from the left end face of the third rectangular metal block 17 to the left end face of the first rectangular groove 14. The upper end face of the third rectangular metal block 17 and the upper end face of the first rectangular groove 14 are located in the same plane. The width of the fourth rectangular metal block 18 along the front-to-back direction is 2.6 mm smaller than the width of the third rectangular metal block 17 along the front-to-back direction. The height of the metal block 18 in the vertical direction is 4.05 mm smaller than the height of the third rectangular metal block 17 in the vertical direction. The width of the fifth rectangular metal block 19 in the front-to-back direction is 3 mm larger than the width of the fourth rectangular metal block 18 in the front-to-back direction. The height of the fifth rectangular metal block 19 in the vertical direction is 4.1 mm smaller than the height of the fourth rectangular metal block 18 in the vertical direction. The width of the sixth rectangular metal block 20 in the front-to-back direction is 1.4 mm smaller than the width of the fifth rectangular metal block 19 in the front-to-back direction. The height of the fifth rectangular metal block 19 in the vertical direction is 1.5 mm smaller than the height of the fourth rectangular metal block 18 in the vertical direction.The first three-level metal ladder includes a seventh rectangular metal block 21, an eighth rectangular metal block 22 and a ninth rectangular metal block 23. The seventh rectangular metal block 21, the eighth rectangular metal block 22 and the ninth rectangular metal block 23 are arranged in order from right to left. The right end face of the seventh rectangular metal block 21 is fixedly connected to the right end face of the first rectangular groove 14 and is in a fitted state. The distance from the front end face of the seventh rectangular metal block 21 to the front end face of the first rectangular groove 14 is equal to the distance from the rear end face of the seventh rectangular metal block 21 to the rear end face of the first rectangular groove 14. The right end face of the eighth rectangular metal block 22 is fixedly connected to the left end face of the seventh rectangular metal block 21 and The right end face of the ninth rectangular metal block 23 is fixedly connected to the left end face of the eighth rectangular metal block 22 and is in a fitted state. The upper end face of the seventh rectangular metal block 21 is flush with the upper end face of the first rectangular groove 14. The lower end faces of the seventh rectangular metal block 21, the eighth rectangular metal block 22 and the ninth rectangular metal block 23 are all flush with the lower end face of the first rectangular groove 14. The height of the eighth rectangular metal block 22 along the vertical direction is 5.65 mm smaller than the height of the seventh rectangular metal block 21 along the vertical direction. The height of the ninth rectangular metal block 23 along the vertical direction is 8.2 mm smaller than the height of the eighth rectangular metal block 22 along the vertical direction. The width of the eighth rectangular metal block 22 along the left-right direction is 0.6 mm greater than the width of the seventh rectangular metal block 21 along the left-right direction. The width of the ninth rectangular metal block 23 along the left-right direction is 0.8 mm greater than the width of the eighth rectangular metal block 22 along the left-right direction. The second and third level metal steps are symmetrical with the first and third level metal steps relative to the symmetry plane of the first rectangular groove 14 along the front-back direction. The first rectangular metal block 15 is located on the right side of the fourth level metal step and on the left side of the first and third level metal steps. The left end face of the first rectangular metal block 15 is fixedly connected to the right end face of the third rectangular metal block 17 and is in a fitted state. The first rectangular metal block 15 is The front end face is located in front of the plane where the rear end face of the fourth rectangular metal block 18 is located, and the distance between the two is 1.25 mm. The rear end face of the first rectangular metal block 15 is located in front of the plane where the rear end face of the fifth rectangular metal block 19 is located, and the distance between the two is 2.45 mm. The lower end face of the first rectangular metal block 15 is flush with the lower end face of the third rectangular metal block 17. The height of the first rectangular metal block 15 in the vertical direction is 12.15 mm less than the height of the third rectangular metal block 17 in the vertical direction. The second rectangular metal block 16 is bilaterally symmetrical with the first rectangular metal block 15 relative to the symmetry plane of the first rectangular slot 14 in the front-to-back direction.The second radiation component 5 includes a second rectangular slot 24, a third rectangular slot 25, a tenth rectangular metal block 26 and an eleventh rectangular metal block 27. The second rectangular slot 24 and the third rectangular slot 25 are opened on the second metal plate 2 and pass through the second metal plate 2 up and down. The second rectangular slot 24 and the third rectangular slot 25 are spaced apart from each other. The front end face of the second rectangular slot 24 and the front end face of the third rectangular slot 25 are parallel to the front end face of the first rectangular slot 14. The front end face of the second rectangular slot 24 is located on the rear side of the plane where the front end face of the first rectangular slot 14 is located, and the distance between the two is 3.5 mm; the front end face of the third rectangular slot 25 is located on the rear side of the plane where the front end face of the first rectangular slot 14 is located, and the distance between the two is 3.5 mm; the rear end face of the second rectangular slot 24 and the rear end face of the third rectangular slot 25 are parallel to the rear end face of the first rectangular slot 14, and the rear end face of the second rectangular slot 24 is located on the rear side of the plane where the front end face of the first rectangular slot 14 is located. The rear end face of the groove 14 is located on the front side of the plane where the rear end face of the groove 14 is located, and the distance between the two is 3.5mm; the rear end face of the third rectangular groove 25 is located on the front side of the plane where the rear end face of the first rectangular groove 14 is located, and the distance between the two is 3.5mm; the left end face of the second rectangular groove 24 is parallel to the left end face of the first rectangular groove 14, and the left end face of the second rectangular groove 24 is located to the right side of the plane where the left end face of the first rectangular groove 14 is located, and the distance between the two is 2mm; the left end face of the third rectangular groove 25 is located to the right side of the plane where the right end face of the second rectangular groove 24 is located, and the distance between the two is 6mm; the right end face of the second rectangular groove 24 is parallel to the right end face of the first rectangular groove 14, and the right end face of the second rectangular groove 24 is located to the left of the right end face of the first rectangular groove 14, and the distance between the two is 12mm; the right end face of the third rectangular groove 25 is located to the right side of the right end face of the second rectangular groove 24, and the distance between the two is 10mm;The ninth rectangular metal block 23 is located in the second rectangular groove 24, the upper end face of the ninth rectangular metal block 23 is flush with the upper end face of the second rectangular groove 24, the lower end face of the tenth rectangular metal block 26 is flush with the lower end face of the second rectangular groove 24, the left end face of the tenth rectangular metal block 26 is connected to the left end face of the second rectangular groove 24 and is in a fitted state, the tenth rectangular metal block 26 is front-to-back symmetrical with respect to the symmetry plane of the second rectangular groove 24 along the left-right direction, the length of the tenth rectangular metal block 26 along the front-to-back direction is 6.5 mm smaller than the length of the second rectangular groove 24 along the front-to-back direction, the length of the tenth rectangular metal block 26 along the left-to-right direction is 1 mm smaller than the length of the second rectangular groove 24 along the left-to-right direction, the eleventh rectangular metal block 27 is located in the third rectangular groove 25, the upper end face of the eleventh rectangular metal block 27 is flush with the upper end face of the third rectangular groove 25, and the lower end face of the eleventh rectangular metal block 27 is flush with the lower end face of the third rectangular groove 25. The right end face of the eleventh rectangular metal block 27 is connected to the right end face of the third rectangular slot 25 and is in a fitted state. The eleventh rectangular metal block 27 is front-to-back symmetrical with respect to the symmetry plane of the third rectangular slot 25 along the left-right direction. The length of the eleventh rectangular metal block 27 along the front-to-back direction is 6.5 mm smaller than the length of the third rectangular slot 25 along the front-to-back direction. The length of the eleventh rectangular metal block 27 along the left-to-right direction is 1 mm smaller than the length of the third rectangular slot 25 along the left-to-right direction. The upper end face of the first rectangular slot 14 is the output port of the radiation unit, the lower end face of the second rectangular slot 24 is the first input port of the radiation unit, and the lower end face of the third rectangular slot 25 is the second input port of the radiation unit. The first input port of the radiation unit is used to access electromagnetic waves in TE10 mode, the second input port of the radiation unit is used to access electromagnetic waves in TE10 mode, and the output port of the radiation unit is used to radiate electromagnetic waves in TE10 mode to free space. The 16 radiation units are distributed in 4 rows and 4 columns, and the row direction is along the front-to-back direction, and the column direction is along the left-to-right direction. The spacing between the first rectangular slots 14 of each two adjacent radiation units in the same row is 19 mm, and the spacing between the first rectangular slots 14 of each two adjacent radiation units in the same column is 19 mm. For each two adjacent radiation units in the same row, the left end face of the first metal branch node 6 of the metal branch node group 3 of the radiation unit in the latter column completely overlaps with the right end face of the third metal branch node 8 of the metal branch node group 3 of the radiation unit in the previous column, the left end face of the fifth metal branch node 10 of the metal branch node group 3 of the radiation unit in the latter column completely overlaps with the right end face of the sixth metal branch node 11 of the metal branch node group 3 of the radiation unit in the previous column, and the left end face of the second metal branch node 7 of the metal branch node group 3 of the radiation unit in the latter column completely overlaps with the right end face of the fourth metal branch node 9 of the metal branch node group 3 of the radiation unit in the previous column;For every two adjacent radiating elements in the same column, the front face of the first metal branch 6 of the metal branch group 3 of the radiating element in the following row completely overlaps with the rear face of the second metal branch 7 of the metal branch group 3 of the radiating element in the previous row; the front face of the seventh metal branch 12 of the metal branch group 3 of the radiating element in the following row completely overlaps with the rear face of the eighth metal branch 13 of the metal branch group 3 of the radiating element in the previous row; and the front face of the third metal branch 8 of the metal branch group 3 of the radiating element in the following row completely overlaps with the rear face of the fourth metal branch 9 of the metal branch group 3 of the radiating element in the previous row.

[0022] Example 3: This example is basically the same as Example 2, except that: Figure 7 to Figure 9As shown, in this embodiment, the feeding network includes a third metal plate 28, a first feeding assembly and a second feeding assembly, and the first feeding assembly and the second feeding assembly are both arranged on the third metal plate 28; the third metal plate 28 is located below the second metal plate 2, and the third metal plate 28 is a square plate. The third metal plate 28 and the second metal plate 2 have the same size, the front end surface of the third metal plate 28 is aligned with the front end surface of the second metal plate 2, the rear end surface of the third metal plate 28 is aligned with the rear end surface of the second metal plate 2, and the left end surface of the third metal plate 28 is aligned with the left end surface of the second metal plate 2. The right end surface of the first metal plate 2 is aligned vertically with the right end surface of the second metal plate 2; the first feeding assembly includes a magic T 29 and two adapters; the two adapters are called the first adapter 30 and the second adapter 31. The magic T 29 is a magic T based on a ridge waveguide structure, including an H-plane to E-plane coaxial to double-ridge structure, a Y-type power divider 41 based on a ridge waveguide structure, and an H-plane coaxial to single-ridge structure; the H-plane to E-plane coaxial to double-ridge structure includes three rectangular grooves opened on the third metal plate 28, a twelfth rectangular metal block 32, a thirteenth rectangular metal block 33, a first two-level metal step and a first coaxial structure;The three rectangular grooves are respectively called the fourth rectangular groove 34, the fifth rectangular groove 35 and the sixth rectangular groove 36. The lower end surface of the fourth rectangular groove 34 is located above the lower end surface of the third metal plate 28, and the distance between the two is 4.5 mm. The upper end surface of the fourth rectangular groove 34 is located below the upper end surface of the third metal plate 28, and the distance between the two is 13.8 mm. The symmetry plane of the fourth rectangular groove 34 along the left-right direction coincides with the symmetry plane of the third metal plate 28 along the left-right direction. The symmetry plane of the fourth rectangular groove 34 along the front-back direction is located to the left of the symmetry plane of the third metal plate 28 along the front-back direction, and the distance between the two is 17.625 mm. The left end surface of the fourth rectangular groove 34 is located to the right of the left end surface of the third metal plate 28, and the distance between the two is 17.625 mm. The distance between the fifth and fourth rectangular grooves 35 is 23.55 mm, the right end face of the fourth rectangular groove 34 is located on the left side of the right end face of the third metal plate 28, and the distance between the two is 58.8 mm, the fifth rectangular groove 35 is located on the rear side of the fourth rectangular groove 34, the front end face of the fifth rectangular groove 35 is connected to the rear end face of the fourth rectangular groove 34 and is in a fitted state, the upper end face of the fifth rectangular groove 35 is located below the upper end face of the fourth rectangular groove 34, and the distance between the two is 2.5 mm, the lower end face of the fifth rectangular groove 35 is flush with the lower end face of the fourth rectangular groove 34, the left end face of the fifth rectangular groove 35 is flush with the left end face of the fourth rectangular groove 34, the right end face of the fifth rectangular groove 35 is flush with the right end face of the fourth rectangular groove 34, and the width of the fifth rectangular groove 35 in the front-to-back direction is greater than that of the fifth rectangular groove 35. The width of the fourth rectangular groove 34 along the front-to-back direction is 9.3mm larger, the sixth rectangular groove 36 is located on the rear side of the fifth rectangular groove 35, the front end face of the sixth rectangular groove 36 is in contact with the rear end face of the fifth rectangular groove 35, the upper end face of the sixth rectangular groove 36 is flush with the upper end face of the fifth rectangular groove 35, the lower end face of the sixth rectangular groove 36 is flush with the lower end face of the fifth rectangular groove 35, the width of the sixth rectangular groove 36 along the front-to-back direction is 0.1mm larger than the width of the fifth rectangular groove 35 along the front-to-back direction, the left end face of the sixth rectangular groove 36 is located on the left side of the plane where the left end face of the fifth rectangular groove 35 is located, and the two are 2mm apart, the right end face of the sixth rectangular groove 36 is located on the right side of the plane where the right end face of the fifth rectangular groove 35 is located, and the two are 2m apart. m; the twelfth rectangular metal block 32 is located in the fourth rectangular groove 34, the front end face of the twelfth rectangular metal block 32 is connected to the front end face of the fourth rectangular groove 34 and the two are in a fitted state; the rear end face of the twelfth rectangular metal block 32 is located in front of the rear end face of the fourth rectangular groove 34, and the two are 2.5mm apart; the left end face of the twelfth rectangular metal block 32 is located to the right of the left end face of the fourth rectangular groove 34, and the two are 4mm apart; the right end face of the twelfth rectangular metal block 32 is located to the left of the right end face of the fourth rectangular groove 34, and the two are 4mm apart; the upper end face of the twelfth rectangular metal block 32 is flush with the upper end face of the fourth rectangular groove 34; the lower end face of the twelfth rectangular metal block 32 is flush with the lower end face of the fourth rectangular groove 34;The thirteenth rectangular metal block 33 is located in the fourth rectangular groove 34, the thirteenth rectangular metal block 33 is located on the rear side of the twelfth rectangular metal block 32, the rear end face of the thirteenth rectangular metal block 33 is connected to the rear end face of the fourth rectangular groove 34 and the two are in a fitted state; the front end face of the thirteenth rectangular metal block 33 is located on the rear side of the rear end face of the twelfth rectangular metal block 32, and the distance between the two is 1mm, the left end face of the thirteenth rectangular metal block 33 is flush with the left end face of the twelfth rectangular metal block 32, and the right end face of the thirteenth rectangular metal block 33 is flush with the right end face of the twelfth rectangular metal block 32; the upper end face of the thirteenth rectangular metal block 33 is flush with the upper end face of the fourth rectangular groove 34; the lower end face of the thirteenth rectangular metal block 33 is flush with the upper end face of the fourth rectangular groove 34; The end face is located above the lower end face of the fourth rectangular groove 34, and the distance between the two is 0.7mm; the first two-level metal ladder includes a fourteenth rectangular metal block 37 and a fifteenth rectangular metal block 38, the fourteenth rectangular metal block 37 is located in the fifth rectangular groove 35, and the upper end face of the fourteenth rectangular metal block 37 is flush with the upper end face of the fifth rectangular groove 35; the lower end face of the fourteenth rectangular metal block 37 is flush with the lower end face of the thirteenth rectangular metal block 33; the front end face of the fourteenth rectangular metal block 37 is connected to the rear end face of the thirteenth rectangular metal block 33 and the two are in a fitted state; the left end face of the fourteenth rectangular metal block 37 is located to the right of the left end face of the fifth rectangular groove 35, and the distance between the two is 4mm; the fourteenth rectangular metal block 3 7 is located on the left side of the right end face of the fifth rectangular groove 35, and the distance between the two is 4 mm; the width of the fourteenth rectangular metal block 37 along the front-to-back direction is 7.8 mm smaller than the width of the fifth rectangular groove 35 along the front-to-back direction, and the length of the fourteenth rectangular metal block 37 along the left-to-right direction is 8 mm smaller than the length of the fifth rectangular groove 35 along the left-to-right direction; the fifteenth rectangular metal block 38 is located in the fifth rectangular groove 35 and the sixth rectangular groove 36, and the upper end face of the fifteenth rectangular metal block 38 is respectively connected to the upper end face of the fifth rectangular groove 35 and the upper end face of the sixth rectangular groove 36 and is in a fitted state; the lower end face of the fifteenth rectangular metal block 38 is located above the lower end face of the fifth rectangular groove 35 and the lower end face of the sixth rectangular groove 36, and The distance between the lower end face of the fifteenth rectangular metal block 38 and the lower end faces of the fifth rectangular groove 35 and the lower end faces of the sixth rectangular groove 36 is 0.55 mm. The front end face of the fifteenth rectangular metal block 38 is connected to the rear end face of the fourteenth rectangular metal block 37, and the two are in a bonded state. The left end face of the fifteenth rectangular metal block 38 is flush with the left end face of the fourteenth rectangular metal block 37. The right end face of the fifteenth rectangular metal block 38 is flush with the right end face of the fourteenth rectangular metal block 37. The rear end face of the fifteenth rectangular metal block 38 is located between the front end face of the sixth rectangular groove 36 and the rear end face of the sixth rectangular groove 36, and the distance between the rear end face of the fifteenth rectangular metal block 38 and the rear end face of the sixth rectangular groove 36 is 5 mm.The first coaxial structure includes a first cylindrical groove 39 and a first cylindrical metal block 40. The first cylindrical groove 39 is opened in the third metal plate 28. The first cylindrical groove 39 is located below the sixth rectangular groove 36. The upper end face of the first cylindrical groove 39 and the lower end face of the sixth rectangular groove 36 are located in the same plane. The axis of the first cylindrical groove 39 is located on the rear side of the plane where the front end face of the sixth rectangular groove 36 is located, and the distance between the two is 6.9 mm. The axis of the first cylindrical groove 39 is located on the front side of the plane where the rear end face of the sixth rectangular groove 36 is located, and the distance between the two is 6.5 mm. The axis of the first cylindrical groove 39 is located on the right side of the plane where the left end face of the sixth rectangular groove 36 is located, and the distance between the two is 7.5 mm. The first cylindrical groove 39 The axis is located on the left side of the plane where the right end face of the sixth rectangular groove 36 is located, and the distance between the two is 7.5mm. The lower end face of the first cylindrical groove 39 is located above the lower end face of the third metal plate 28, and the distance between the two is 1.05mm; the first cylindrical metal block 40 is arranged in the first cylindrical groove 39 and the sixth rectangular groove 36. The first cylindrical metal block 40 is coaxial with the first cylindrical groove 39. The radius of the first cylindrical metal block 40 is 0.55mm smaller than the radius of the cylindrical groove. The upper end face of the first cylindrical metal block 40 is connected to the lower end face of the fifteenth rectangular metal block 38 and the two are in a fitted state. The lower end face of the first cylindrical metal block 40 is connected to the lower end face of the first cylindrical groove 39 and the two are in a fitted state. The upper end surface of the cylindrical groove 34 is the output port of the H-plane to E-plane coaxial to double-ridge structure, and the lower end surface of the cylindrical groove is the input port of the H-plane to E-plane coaxial to double-ridge structure; the Y-type power divider 41 has one input port and two output ports, and the Y-type power divider 41 is realized by slotting on the third metal plate 28; the H-plane coaxial to single-ridge structure includes two rectangular grooves opened on the third metal plate 28, a sixteenth rectangular metal block 42, a seventeenth rectangular metal block 43, an eighteenth rectangular metal block 44 and a second coaxial structure; the two rectangular grooves are respectively called the seventh rectangular groove 45 and the eighth rectangular groove 46, the lower end surface of the seventh rectangular groove 45 and the upper end surface of the fourth rectangular groove 34 are located in the same plane, and the right end surface of the seventh rectangular groove 45 is located on the fourth The left end face of the rectangular groove 34 is located on the left side of the plane where the left end face is located, and the two are 0.8mm apart; the front end face of the seventh rectangular groove 45 is located in front of the plane where the front end face of the fourth rectangular groove 34 is located, and the two are 5.5mm apart; the rear end face of the seventh rectangular groove 45 is located on the rear side of the plane where the rear end face of the fourth rectangular groove 34 is located, and the two are 5.5mm apart; the upper end face of the seventh rectangular groove 45 is located below the upper end face of the third metal plate 28, and the length of the seventh rectangular groove 45 in the left-right direction is 10.25mm greater than the length of the fourth rectangular groove 34 in the left-right direction; the height of the seventh rectangular groove 45 in the vertical direction is 2.5mm less than the height of the fourth rectangular groove 34 in the vertical direction; the left rear edge of the seventh rectangular groove 45 is chamfered;The eighth rectangular groove 46 is located on the front side of the seventh rectangular groove 45, the left end face of the eighth rectangular groove 46 is flush with the left end face of the seventh rectangular groove 45, the right end face of the eighth rectangular groove 46 is located on the left side of the plane where the right end face of the seventh rectangular groove 45 is located, and the two are 6.25mm apart; the upper end face of the eighth rectangular groove 46 is flush with the upper end face of the seventh rectangular groove 45, the lower end face of the eighth rectangular groove 46 is flush with the lower end face of the seventh rectangular groove 45, the rear end face of the eighth rectangular groove 46 is connected to the front end face of the seventh rectangular groove 45 and the two are in a fitted state; the width of the eighth rectangular groove 46 along the front-to-back direction is 3mm larger than the width of the seventh rectangular groove 45 along the front-to-back direction; the sixteenth rectangular metal block 42 is located in the seventh rectangular groove 45, the right end face of the sixteenth rectangular metal block 42 The end face is connected to the right end face of the seventh rectangular groove 45 and the two are in a fitted state, the upper end face of the sixteenth rectangular metal block 42 is flush with the upper end face of the seventh rectangular groove 45, the lower end face of the sixteenth rectangular metal block 42 is located above the lower end face of the seventh rectangular groove 45, and the distance is 0.55mm, the front end face of the sixteenth rectangular metal block 42 is located behind the front end face of the seventh rectangular groove 45, and the two are 5.75mm apart; the rear end face of the sixteenth rectangular metal block 42 is located in front of the rear end face of the seventh rectangular groove 45, and the two are 5.75mm apart; the left front edge of the sixteenth rectangular metal block 42 is chamfered, and the left rear edge is chamfered; the seventeenth rectangular metal block 43 is located in the seventh rectangular groove 45, and the seventeenth rectangular metal block 43 is located On the front side of the sixteenth rectangular metal block 42, the left end face of the seventeenth rectangular metal block 43 is flush with the left end face of the sixteenth rectangular metal block 42, the rear end face of the seventeenth rectangular metal block 43 is connected to the front end face of the sixteenth rectangular metal block 42 and the two are in a fitted state; the upper end face of the seventeenth rectangular metal block 43 is flush with the upper end face of the sixteenth rectangular metal block 42, the lower end face of the seventeenth rectangular metal block 43 is flush with the lower end face of the sixteenth rectangular metal block 42, the right end face of the seventeenth rectangular metal block 43 is located on the left side of the plane where the right end face of the sixteenth rectangular metal block 42 is located, and the distance between the two is 12mm; the width of the seventeenth rectangular metal block 43 along the front-to-back direction is 4.25mm larger than the width of the sixteenth rectangular metal block 42 along the front-to-back direction, and the eighteenth rectangular metal block 43 is 4.25mm larger than the width of the sixteenth rectangular metal block 42 along the front-to-back direction. The rectangular metal block 44 is located in the seventh rectangular groove 45 and the eighth rectangular groove 46. The eighteenth rectangular metal block 44 is located in front of the seventeenth rectangular metal block 43. The rear end face of the eighteenth rectangular metal block 44 is connected to the front end face of the seventeenth rectangular metal block 43, and the two are in a bonded state. The upper end face of the eighteenth rectangular metal block 44 is flush with the upper end face of the seventeenth rectangular metal block 43. The lower end face of the eighteenth rectangular metal block 44 is flush with the lower end face of the seventeenth rectangular metal block 43. The front end face of the eighteenth rectangular metal block 44 is located behind the front end face of the eighth rectangular groove 46, and the distance between the two is 5 mm. The left end face of the eighteenth rectangular metal block 44 is located to the right of the plane where the left end face of the seventeenth rectangular metal block 43 is located, and the distance between the two is 0.55 mm.The right end face of the eighteenth rectangular metal block 44 is located on the left side of the plane where the right end face of the seventeenth rectangular metal block 43 is located, and the distance between the two is 0.55mm; the width of the eighteenth rectangular metal block 44 along the front-to-back direction is 10.25mm larger than the width of the seventeenth rectangular metal block 43 along the front-to-back direction; the second coaxial structure includes a second cylindrical groove 47 and a second cylindrical metal block 48, the second cylindrical groove 47 is opened in the third metal plate 28, the second cylindrical groove 47 is located below the eighth rectangular groove 46, the upper end face of the second cylindrical groove 47 and the lower end face of the eighth rectangular groove 46 are located in the same plane, the axis of the second cylindrical groove 47 is located on the rear side of the plane where the front end face of the eighth rectangular groove 46 is located, and the distance is 6.5mm, the second cylindrical groove 4 7 is located in front of the plane where the rear end face of the eighth rectangular groove 46 is located, and the distance is 11.5mm. The axis of the second cylindrical groove 47 is located to the right of the plane where the left end face of the eighth rectangular groove 46 is located, and the distance is 7.5mm. The axis of the second cylindrical groove 47 is located to the left of the plane where the right end face of the eighth rectangular groove 46 is located, and the distance is 7.5mm. The lower end face of the second cylindrical groove 47 is located above the lower end face of the third metal plate 28, and the distance between the two is 6.55mm; the second cylindrical metal block 48 is arranged in the second cylindrical groove 47 and the eighth rectangular groove 46. The second cylindrical metal block 48 is coaxial with the second cylindrical groove 47, and the radius of the second cylindrical metal block 48 is 0.55m smaller than the radius of the second cylindrical groove 47. m, the upper end surface of the second cylindrical metal block 48 is connected to the lower end surface of the eighteenth rectangular metal block 44 and the two are in a fitted state, the lower end surface of the second cylindrical metal block 48 is connected to the lower end surface of the second cylindrical groove 47 and the two are in a fitted state, the front end surface of the seventh rectangular groove 45 is the output port of the H-face coaxial to single-ridge structure, and the lower surface of the second cylindrical groove 47 is the input port of the H-face coaxial to single-ridge structure; the input port of the H-face to E-face coaxial to double-ridge structure is the first input port of the magic T29, the input port of the H-face coaxial to single-ridge structure is the second input port of the magic T29, and the output port of the H-face to E-face coaxial to double-ridge structure and the output port of the H-face coaxial to single-ridge structure are both connected to the input port of the Y-type power divider 41 The two output ports of the Y-type power divider 41 serve as the two output ports of the magic T29. The first adapter 30 and the second adapter 31 each have an input port and an output port. The first adapter 30 and the second adapter 31 are used to perform the conversion from the single-ridge waveguide structure to the micro-coaxial structure. The two output ports of the magic T29 are respectively connected to the input ports of the first adapter 30 and the second adapter 31. The first input port of the magic T29 serves as the first input port of the first feeding component, the second input port of the magic T29 serves as the second input port of the first feeding component, the output port of the first adapter 30 serves as the first output port of the first feeding component, and the output port of the second adapter 31 serves as the second output port of the first feeding component.The second feeding assembly includes two one-to-sixteen power dividers based on a micro-coaxial structure and two groups of adapters; the two one-to-sixteen power dividers are respectively referred to as a first power divider 49 and a second power divider 50; the first power divider 49 and the second power divider 50 respectively have an input port and sixteen output ports; the first power divider 49 and the second power divider 50 are respectively implemented by slotting the third metal plate 28, and the two groups of micro adapters are respectively referred to as a first group of adapters and a second group of adapters; the first group of adapters consists of 16 identical third adapters 51, which are used for switching from a micro-coaxial structure to a single-ridge structure, and the third adapter 51 has an input port and an output port. The 16 third adapters 51 are evenly spaced in 4 rows and 4 columns, and the row direction is along the front-to-back direction, and the column direction is along the left-to-right direction. The spacing between each two adjacent third adapters 51 in the same row is 19 mm, and the spacing between each two adjacent third adapters 51 in the same column is 19 mm; the input ports of the 16 third adapters 51 are connected one-to-one with the sixteen output ports of the first power divider 49, and the second group of adapters consists of 16 identical fourth adapters 52. The fourth adapter 52 is used for connecting the micro-coaxial structure to the single-ridge structure. The fourth adapter 52 has an input port and an output port. The 16 fourth adapters 52 are evenly spaced in 4 rows and 4 columns, and the row direction is along the front-to-back direction, and the column direction is along the left-to-right direction. The spacing between each two adjacent fourth adapters 52 in the same row is 19 mm, and the spacing between each two adjacent fourth adapters 52 in the same column is 19 mm; the input ports of the 16 fourth adapters 52 The first power divider 49 is connected in a one-to-one correspondence with the sixteen output ports of the second power divider 50. The input port of the first power divider 49 serves as the first input port of the second feed assembly. The input port of the second power divider 50 serves as the second input port of the second feed assembly. The sixteen output ports of the third adapters 51 serve as the first group of output ports of the second feed assembly. The sixteen output ports of the fourth adapters 52 serve as the second group of output ports of the second feed assembly. The first output port of the first feed assembly is connected to the first input port of the second feed assembly. The second output port of the first feed assembly is connected to the second input port of the second feed assembly. The first input port of the first feed assembly serves as the first input port of the broadband dual-polarized antenna array. The second input port of the first feed assembly serves as the second input port of the broadband dual-polarized antenna array. The first group of output ports of the second feed assembly is connected in a one-to-one correspondence with the first input ports of the sixteen radiating elements. The second group of output ports of the second feed assembly is connected in a one-to-one correspondence with the second input ports of the sixteen radiating elements.

[0023] The working process of the broadband dual-polarization antenna array in this embodiment is as follows: when a TEM mode electromagnetic wave is input from the first input port of the broadband dual-polarization antenna array, the TEM mode electromagnetic wave enters the H-plane to E-plane coaxial to double-ridge structure, then enters the Y-type power divider 41 and generates two TE10 mode electromagnetic waves with different phases at its two output ports. The two TE10 mode electromagnetic waves with different phases are converted into two TEM mode electromagnetic waves with different phases through the first adapter 30 and the second adapter 31; the two TEM mode electromagnetic waves with different phases are converted into two TEM mode electromagnetic waves with different phases. After the magnetic wave passes through the first power divider 49 and the second power divider 50, the 16 output ports of the first power divider 49 output a first group of 16-channel TEM mode electromagnetic waves, and the 16 output ports of the second one-to-sixteen power divider 50 output a second group of 16-channel TEM mode electromagnetic waves that are out of phase with the first group of 16-channel TEM mode electromagnetic waves; the two groups of 16-channel TEM mode electromagnetic waves are converted into two groups of 16-channel TE10 mode electromagnetic waves with out of phase through two sets of adapters, and the two groups of 16-channel TE10 mode electromagnetic waves are converted into two groups of 16-channel TE10 mode electromagnetic waves with out of phase. Propagates to free space through the radiation network; when the TEM mode enters from the second input port of the broadband dual-polarization antenna array, the TEM mode electromagnetic wave enters the coaxial to dual-ridge structure of the H plane, and then enters the Y-type power divider 41, and generates two TE10 mode electromagnetic waves of the same phase at its two output ports. The two TE10 mode electromagnetic waves of the same phase are converted into two TEM mode electromagnetic waves of the same phase through the first adapter 30 and the second adapter 31; the two TEM mode electromagnetic waves of the same phase are converted into two TEM mode electromagnetic waves of the same phase through the first power divider 49 and After the second power divider 50, a first group of sixteen-channel TEM mode electromagnetic waves are output from the 16 output ports of the first power divider 49, and a second group of sixteen-channel TEM mode electromagnetic waves that are in phase with the first group of sixteen-channel TEM mode electromagnetic waves are output from the 16 output ports of the second one-to-sixteen power divider 50; the two groups of sixteen-channel TEM mode electromagnetic waves are converted into two groups of sixteen-channel TE10 mode electromagnetic waves in phase through two groups of adapters, and the two groups of sixteen-channel TE10 mode electromagnetic waves are propagated into free space through the radiation network.

[0024] To verify the performance of the present invention, HFSS simulation was performed on the present invention. The gain curve simulation diagram of the broadband dual-polarized antenna array of the present invention is shown in FIG. Figure 10 As shown, the reflection coefficient curve simulation diagram of the broadband dual-polarized antenna array of the present invention is shown in FIG. Figure 11 Analysis Figure 10 It can be seen that in the entire Ku band, the reflection coefficient S of the first input port (input port 1) of the antenna is 11 Below -12.7dB, the reflection coefficient S of the second input port (input port 2) of the antenna is 22 Below -11.7dB, the isolation S between input port 1 and input port 2 12Below -20.3dBi. Analysis Figure 11 It can be seen that across the entire Ku-band, the gain of the antenna's first input port (input port 1) is in the range of 18.4-21.6 dBi, and the gain of the antenna's second input port (input port 2) is in the range of 18.7-21.7 dBi. In summary, the present invention achieves high gain and efficiency while also covering the entire Ku-band bandwidth, meeting the requirements for Ku-band satellite communications.

Claims

1. A broadband dual-polarized antenna array, comprising a radiating network and a feeding network, wherein the feeding network is used to convert electromagnetic waves in the form of a TEM mode input thereto into electromagnetic waves in the form of a TE10 mode and transmit them to the radiating network, and the radiating network is used to radiate the electromagnetic waves transmitted thereto by the feeding network into free space; characterized in that The radiation network is realized by arranging a partition structure composed of four metal steps in a rectangular slot and a metal branch arranged above the partition structure. The feeding network is realized based on a full parallel feed network composed of a ridge waveguide structure, a micro-coaxial structure and a magic T. The radiation network includes two metal plates and 16 radiation units. The two metal plates are respectively referred to as a first metal plate and a second metal plate. The first metal plate is located above the second metal plate. Both metal plates are square plates and have the same size. The first metal plate and the second metal plate are aligned and stacked together. The length direction of the two metal plates is the left-right direction, the width direction is the front-back direction, and the thickness direction is the up-down direction. Each of the radiation units includes a metal branch group, a first radiation component and a second radiation component, the metal branch group is located above the first metal plate, the metal branch group includes eight metal branches that are all rectangular, and the eight metal branches are respectively referred to as the first metal branch to the eighth metal branch; the first metal branch to the fourth metal branch are exactly the same in size, and the first metal branch to the fourth metal branch are evenly spaced in 2 rows and 2 columns, and the row direction is along the front-to-back direction, and the column direction is along the left-right direction, wherein the first metal branch is located at In the first row and first column, the second metal branch is located in the second row and first column, the third metal branch is located in the first row and second column, and the fourth metal branch is located in the second row and second column. The left end faces of the first metal branch to the fourth metal branch are parallel to the plane where the left end face of the first metal plate is located. The front end faces of the first metal branch to the fourth metal branch are parallel to the plane where the front end face of the first metal plate is located. The left end faces of the first metal branch and the second metal branch are located in the same plane. The third metal branch and the fourth metal branch are located in the same plane. The right end faces of the branches are located in the same plane, the front end faces and rear end faces of the first metal branch and the third metal branch are respectively located in the same plane, the front end faces and rear end faces of the second metal branch and the fourth metal branch are respectively located in the same plane, the lower end faces of the first metal branch to the fourth metal branch are all fixed on the upper end face of the first metal plate and are in a fitted state, the fifth metal branch is exactly the same size as the sixth metal branch, the fifth metal branch is located between the first metal branch and the second metal branch, the The front end face of the fifth metal branch is parallel to the rear end face of the first metal branch, the rear end face of the fifth metal branch is parallel to the front end face of the second metal branch, the left end face of the fifth metal branch is located in the same plane as the left end face of the first metal branch, the lower end face of the fifth metal branch is fixed to the upper end face of the first metal plate and is in a bonded state, the height of the fifth metal branch in the vertical direction is smaller than the height of the first metal branch in the vertical direction, and the length of the fifth metal branch in the left and right direction is smaller than the length of the first metal branch in the left and right direction;The sixth metal branch node is located between the third metal branch node and the fourth metal branch node, the front end face of the sixth metal branch node is parallel to the rear end face of the third metal branch node, the rear end face of the sixth metal branch node is parallel to the front end face of the fourth metal branch node, the right end face of the sixth metal branch node and the right end face of the third metal branch node are located in the same plane, the lower end face of the sixth metal branch node is fixed on the upper end face of the first metal plate and is in a fitted state, the height of the sixth metal branch node in the up-down direction is smaller than the height of the third metal branch node in the up-down direction, and the length of the sixth metal branch node in the left-right direction is smaller than the length of the third metal branch node in the left-right direction; the seventh metal branch node is located between the first metal branch node and the third metal branch node, the left end face of the seventh metal branch node is parallel to the right end face of the first metal branch node, the right end face of the seventh metal branch node is parallel to the left end face of the third metal branch node, the front end face of the seventh metal branch node and the front end face of the first metal branch node are located in the same plane, and the seventh metal The lower end surface of the seventh metal branch node is fixed to the upper end surface of the first metal plate and is in a bonded state. The upper end surface of the seventh metal branch node is located in the same plane as the upper end surface of the first metal branch node. The length of the seventh metal branch node in the front-to-back direction is consistent with the length of the first metal branch node in the front-to-back direction. The length of the seventh metal branch node in the left-to-right direction is smaller than the length of the first metal branch node in the left-to-right direction. The eighth metal branch node is located between the second metal branch node and the fourth metal branch node. The left end surface of the eighth metal branch node is parallel to the right end surface of the second metal branch node. The right end surface of the eighth metal branch node is parallel to the left end surface of the fourth metal branch node. The front end surface of the eighth metal branch node is located in the same plane as the front end surface of the second metal branch node. The lower end surface of the eighth metal branch node is fixed to the upper end surface of the first metal plate and is in a bonded state. The upper end surface of the eighth metal branch node is located in the same plane as the upper end surface of the first metal branch node. The rear end surface of the eighth metal branch node is located in the same plane as the rear end surface of the second metal branch node.The first radiation component includes a first rectangular groove, a four-level metal step, a first three-level metal step, a second three-level metal step, a first rectangular metal block and a second rectangular metal block, the front end face of the first rectangular groove is parallel to the front end face of the first metal plate, the first rectangular groove passes through the first metal plate up and down, the front end face of the first rectangular groove and the rear end face of the first metal branch are in the same plane, the rear end face of the first rectangular groove and the front end face of the second metal branch are in the same plane, and the left end face of the first rectangular groove is located at the left end face of the first metal branch. The right side of the plane where the left end face of the first rectangular groove is located and the left side of the plane where the right end face of the first metal branch is located, and the distance between the left end face of the first rectangular groove and the plane where the left end face of the first metal branch is located is equal to one-quarter of the length of the first metal branch along the left-right direction; the right end face of the first rectangular groove is located to the right side of the plane where the left end face of the third metal branch is located and the left side of the plane where the right end face of the third metal branch is located, and the distance between the right end face of the first rectangular groove and the plane where the right end face of the third metal branch is located is equal to one-quarter of the length of the third metal branch along the left-right direction;The four-level metal ladder is composed of four rectangular metal blocks, namely the third rectangular metal block, the fourth rectangular metal block, the fifth rectangular metal block and the sixth rectangular metal block, the third to the sixth rectangular metal blocks are arranged in the first rectangular groove in order from front to back, the front end face of the third rectangular metal block is fixedly connected to the front end face of the first rectangular groove and is in a fit state, the front end face of the fourth rectangular metal block is fixedly connected to the rear end face of the third rectangular metal block and is in a fit state, the front end face of the fifth rectangular metal block is fixedly connected to the rear end face of the fourth rectangular metal block and is in a fit state, the front end face of the sixth rectangular metal block is fixedly connected to the rear end face of the fifth rectangular metal block and is in a fit state, the rear end face of the sixth rectangular metal block is fixedly connected to the rear end face of the first rectangular groove and is in a fit state, the left end faces of the third to the sixth rectangular metal blocks are located in the same plane, the right end faces of the third to the sixth rectangular metal blocks are located in the same plane, The lower end face of the sixth rectangular metal block is located in the same plane as the lower end face of the first rectangular groove, the distance from the right end face of the third rectangular metal block to the right end face of the first rectangular groove is equal to the distance from the left end face of the third rectangular metal block to the left end face of the first rectangular groove, the upper end face of the third rectangular metal block is located in the same plane as the upper end face of the first rectangular groove, the width of the fourth rectangular metal block in the front-to-back direction is smaller than the width of the third rectangular metal block in the front-to-back direction, the height of the fourth rectangular metal block in the up-down direction is smaller than the height of the third rectangular metal block in the up-down direction, the width of the fifth rectangular metal block in the front-to-back direction is larger than the width of the fourth rectangular metal block in the front-to-back direction, the height of the fifth rectangular metal block in the up-down direction is smaller than the height of the fourth rectangular metal block in the up-down direction, the width of the sixth rectangular metal block in the front-to-back direction is smaller than the width of the fifth rectangular metal block in the front-to-back direction, and the height of the fifth rectangular metal block in the up-down direction is smaller than the height of the fourth rectangular metal block in the up-down direction;The first three-level metal ladder includes a seventh rectangular metal block, an eighth rectangular metal block and a ninth rectangular metal block. The seventh to ninth rectangular metal blocks are arranged in order from right to left. The right end face of the seventh rectangular metal block is fixedly connected to the right end face of the first rectangular groove and is in a fitted state. The distance from the front end face of the seventh rectangular metal block to the front end face of the first rectangular groove is equal to the distance from the rear end face of the seventh rectangular metal block to the rear end face of the first rectangular groove. The right end face of the eighth rectangular metal block is fixedly connected to the left end face of the seventh rectangular metal block and is in a fitted state. In the closed state, the right end face of the ninth rectangular metal block is fixedly connected to the left end face of the eighth rectangular metal block and is in a fitted state, the upper end face of the seventh rectangular metal block is flush with the upper end face of the first rectangular groove, the lower end faces of the seventh rectangular metal block to the ninth rectangular metal block are all flush with the lower end face of the first rectangular groove, the height of the eighth rectangular metal block in the up-down direction is smaller than the height of the seventh rectangular metal block in the up-down direction, the height of the ninth rectangular metal block in the up-down direction is smaller than the height of the eighth rectangular metal block in the up-down direction, and the eighth rectangular metal block is The width of the second and third level metal steps is larger than the width of the seventh rectangular metal block in the left-right direction, the width of the ninth rectangular metal block in the left-right direction is larger than the width of the eighth rectangular metal block in the left-right direction, and the second and third level metal steps are symmetrical with the first and third level metal steps relative to the symmetry plane of the first rectangular groove in the front-to-back direction; the first rectangular metal block is located on the right side of the fourth level metal step and on the left side of the first and third level metal steps, the left end face of the first rectangular metal block is fixedly connected to the right end face of the third rectangular metal block and is in a fitted state, and the front ... second and third level metal steps is fixedly connected to the right end face of the third rectangular metal block and is in a fitted state, and the front end face of the second and third level metal steps is fixedly The end face is located in front of the plane where the rear end face of the fourth rectangular metal block is located, and there is a distance between the two. The rear end face of the first rectangular metal block is located in front of the plane where the rear end face of the fifth rectangular metal block is located, and there is a distance between the two. The lower end face of the first rectangular metal block is flush with the lower end face of the third rectangular metal block. The height of the first rectangular metal block in the vertical direction is smaller than the height of the third rectangular metal block in the vertical direction. The second rectangular metal block is symmetrical with the first rectangular metal block relative to the symmetry plane of the first rectangular groove in the front-to-back direction.The second radiation component includes a second rectangular groove, a third rectangular groove, a tenth rectangular metal block and an eleventh rectangular metal block. The second rectangular groove and the third rectangular groove are opened on the second metal plate and pass through the second metal plate from top to bottom. The second rectangular groove and the third rectangular groove are spaced apart from each other. The front end face of the second rectangular groove and the front end face of the third rectangular groove are parallel to the front end face of the first rectangular groove. The front end face of the second rectangular groove is located on the rear side of the plane where the front end face of the first rectangular groove is located, and there is a distance between the two. The front end face of the third rectangular groove is located on the rear side of the plane where the front end face of the first rectangular groove is located, and there is a distance between the two. The rear end face of the second rectangular groove and the rear end face of the third rectangular groove are parallel to the rear end face of the first rectangular groove. The rear end face of the second rectangular groove is located on the rear side of the plane where the front end face of the first rectangular groove is located, and there is a distance between the two. The rear end face of the first rectangular groove is located on the front side of the plane where the rear end face of the first rectangular groove is located, and there is a distance between the two; the rear end face of the third rectangular groove is located on the front side of the plane where the rear end face of the first rectangular groove is located, and there is a distance between the two; the left end face of the second rectangular groove is parallel to the left end face of the first rectangular groove, the left end face of the second rectangular groove is located on the right side of the plane where the left end face of the first rectangular groove is located, and there is a distance between the two; the left end face of the third rectangular groove is located on the right side of the plane where the right end face of the second rectangular groove is located, and there is a distance between the two; the right end face of the second rectangular groove is parallel to the right end face of the first rectangular groove, the right end face of the second rectangular groove is located on the left side of the right end face of the first rectangular groove, and there is a distance between the two; the right end face of the third rectangular groove is located on the right side of the right end face of the second rectangular groove, and there is a distance between the two;The ninth rectangular metal block is located in the second rectangular groove, the upper end face of the ninth rectangular metal block is flush with the upper end face of the second rectangular groove, the lower end face of the tenth rectangular metal block is flush with the lower end face of the second rectangular groove, the left end face of the tenth rectangular metal block is connected to the left end face of the second rectangular groove and is in a fitted state, the tenth rectangular metal block is front-to-back symmetrical with respect to the symmetry plane of the second rectangular groove along the left-right direction, the length of the tenth rectangular metal block along the front-to-back direction is smaller than the length of the second rectangular groove along the front-to-back direction, the length of the tenth rectangular metal block along the left-to-right direction is smaller than the length of the second rectangular groove along the left-to-right direction, the eleventh rectangular metal block is located in the third rectangular groove, the upper end face of the eleventh rectangular metal block is flush with the upper end face of the third rectangular groove, the lower end face of the eleventh rectangular metal block is flush with the lower end face of the third rectangular groove, the tenth The right end face of a rectangular metal block is connected to the right end face of the third rectangular slot and is in a fitted state. The eleventh rectangular metal block is front-to-back symmetrical with respect to the symmetry plane of the third rectangular slot along the left-right direction. The length of the eleventh rectangular metal block along the front-to-back direction is smaller than the length of the third rectangular slot along the front-to-back direction. The length of the eleventh rectangular metal block along the left-to-right direction is smaller than the length of the third rectangular slot along the left-to-right direction. The upper end face of the first rectangular slot is the output port of the radiation unit, the lower end face of the second rectangular slot is the first input port of the radiation unit, and the lower end face of the third rectangular slot is the second input port of the radiation unit. The first input port of the radiation unit is used to access electromagnetic waves in TE10 mode, the second input port of the radiation unit is used to access electromagnetic waves in TE10 mode, and the output port of the radiation unit is used to radiate electromagnetic waves in TE10 mode to free space. The 16 radiation units are distributed in 4 rows and 4 columns, and the row direction is along the front-to-back direction, and the column direction is along the left-to-right direction. The spacing between the first rectangular slots of each two adjacent radiation units in the same row is 19 mm, and the spacing between the first rectangular slots of each two adjacent radiation units in the same column is 19 mm. For each two adjacent radiation units in the same row, the left end face of the first metal branch node of the metal branch node group of the radiation unit in the latter column completely overlaps with the right end face of the third metal branch node of the metal branch node group of the radiation unit in the previous column, the left end face of the fifth metal branch node of the metal branch node group of the radiation unit in the latter column completely overlaps with the right end face of the sixth metal branch node of the metal branch node group of the radiation unit in the previous column, and the left end face of the second metal branch node of the metal branch node group of the radiation unit in the latter column completely overlaps with the right end face of the fourth metal branch node of the metal branch node group of the radiation unit in the previous column; For every two adjacent radiation units located in the same column, the front end surface of the first metal branch node of the metal branch node group of the radiation units in the latter row completely overlaps with the rear end surface of the second metal branch node of the metal branch node group of the radiation units in the previous row, the front end surface of the seventh metal branch node of the metal branch node group of the radiation units in the latter row completely overlaps with the rear end surface of the eighth metal branch node of the metal branch node group of the radiation units in the previous row, and the front end surface of the third metal branch node of the metal branch node group of the radiation units in the latter row completely overlaps with the rear end surface of the fourth metal branch node of the metal branch node group of the radiation units in the previous row.

2. A broadband dual-polarized antenna array according to claim 1, characterized in that The feed network includes a third metal plate, a first feed assembly, and a second feed assembly, wherein the first feed assembly and the second feed assembly are both arranged on the third metal plate; the third metal plate is located below the second metal plate, the third metal plate is a square plate, and the third metal plate and the second metal plate have the same size; the front end surface of the third metal plate is aligned vertically with the front end surface of the second metal plate, the rear end surface of the third metal plate is aligned vertically with the rear end surface of the second metal plate, the left end surface of the third metal plate is aligned vertically with the left end surface of the second metal plate, and the right end surface of the third metal plate is aligned vertically with the right end surface of the second metal plate; The first feeding component includes a magic T and two adapters; the two adapters are called the first adapter and the second adapter, the magic T is a magic T based on a ridge waveguide structure, including an H-plane to E-plane coaxial to double-ridge structure, a Y-type power divider based on a ridge waveguide structure, and an H-plane coaxial to single-ridge structure; the H-plane to E-plane coaxial to double-ridge structure includes three rectangular grooves, a twelfth rectangular metal block, a thirteenth rectangular metal block, a first two-level metal step and a first coaxial structure opened on the third metal plate; the three rectangular grooves are respectively called the fourth rectangular groove, the fifth rectangular groove and the sixth rectangular groove, the lower end surface of the fourth rectangular groove is located above the lower end surface of the third metal plate, and there is a A distance, the upper end face of the fourth rectangular groove is located below the upper end face of the third metal plate, and there is a distance between the two, the symmetry plane of the fourth rectangular groove along the left-right direction coincides with the symmetry plane of the third metal plate along the left-right direction, the symmetry plane of the fourth rectangular groove along the front-back direction is located on the left side of the symmetry plane of the third metal plate along the front-back direction, and there is a distance between the two, the left end face of the fourth rectangular groove is located on the right side of the left end face of the third metal plate, and there is a distance between the two, the right end face of the fourth rectangular groove is located on the left side of the right end face of the third metal plate, and there is a distance between the two, the fifth rectangular groove is located on the rear side of the fourth rectangular groove, the The front end face of the fifth rectangular groove is connected to the rear end face of the fourth rectangular groove and is in a fitted state, the upper end face of the fifth rectangular groove is located below the upper end face of the fourth rectangular groove, and there is a distance between the two, the lower end face of the fifth rectangular groove is flush with the lower end face of the fourth rectangular groove, the left end face of the fifth rectangular groove is flush with the left end face of the fourth rectangular groove, the right end face of the fifth rectangular groove is flush with the right end face of the fourth rectangular groove, the width of the fifth rectangular groove along the front-to-back direction is larger than the width of the fourth rectangular groove along the front-to-back direction, the sixth rectangular groove is located on the rear side of the fifth rectangular groove, and the front end face of the sixth rectangular groove is in a fitted state with the rear end face of the fifth rectangular groove. , the upper end face of the sixth rectangular groove is flush with the upper end face of the fifth rectangular groove, the lower end face of the sixth rectangular groove is flush with the lower end face of the fifth rectangular groove, the width of the sixth rectangular groove along the front-to-back direction is greater than the width of the fifth rectangular groove along the front-to-back direction, the left end face of the sixth rectangular groove is located on the left side of the plane where the left end face of the fifth rectangular groove is located, and there is a distance between the two, the right end face of the sixth rectangular groove is located on the right side of the plane where the right end face of the fifth rectangular groove is located, and there is a distance between the two; the twelfth rectangular metal block is located in the fourth rectangular groove, and the front end face of the twelfth rectangular metal block is connected to the front end face of the fourth rectangular groove and the two are in a fitted state;The rear end face of the twelfth rectangular metal block is located in front of the rear end face of the fourth rectangular groove, and there is a distance between the two; the left end face of the twelfth rectangular metal block is located to the right of the left end face of the fourth rectangular groove, and there is a distance between the two; the right end face of the twelfth rectangular metal block is located to the left of the right end face of the fourth rectangular groove, and there is a distance between the two; the upper end face of the twelfth rectangular metal block is flush with the upper end face of the fourth rectangular groove; the lower end face of the twelfth rectangular metal block is flush with the lower end face of the fourth rectangular groove; the thirteenth rectangular metal block is located in the fourth rectangular groove, and the thirteenth rectangular metal block is located behind the twelfth rectangular metal block. On the side, the rear end face of the thirteenth rectangular metal block is connected to the rear end face of the fourth rectangular groove and the two are in a fitted state; the front end face of the thirteenth rectangular metal block is located on the rear side of the rear end face of the twelfth rectangular metal block, and there is a distance between the two, the left end face of the thirteenth rectangular metal block is flush with the left end face of the twelfth rectangular metal block, and the right end face of the thirteenth rectangular metal block is flush with the right end face of the twelfth rectangular metal block; the upper end face of the thirteenth rectangular metal block is flush with the upper end face of the fourth rectangular groove; the lower end face of the thirteenth rectangular metal block is located above the lower end face of the fourth rectangular groove, and there is a distance between the two; the first two-level metal ladder includes the first The fourteenth rectangular metal block and the fifteenth rectangular metal block, the fourteenth rectangular metal block is located in the fifth rectangular groove, the upper end face of the fourteenth rectangular metal block is flush with the upper end face of the fifth rectangular groove; the lower end face of the fourteenth rectangular metal block is flush with the lower end face of the thirteenth rectangular metal block; the front end face of the fourteenth rectangular metal block is connected to the rear end face of the thirteenth rectangular metal block and the two are in a fitted state; the left end face of the fourteenth rectangular metal block is located to the right of the left end face of the fifth rectangular groove, and there is a distance between the two; the right end face of the fourteenth rectangular metal block is located to the left of the right end face of the fifth rectangular groove, and there is a distance between the two; the fourteenth rectangular metal block The width of the metal block in the front-to-back direction is smaller than the width of the fifth rectangular groove in the front-to-back direction, and the length of the fourteenth rectangular metal block in the left-to-right direction is smaller than the length of the fifth rectangular groove in the left-to-right direction; the fifteenth rectangular metal block is located in the fifth rectangular groove and the sixth rectangular groove, and the upper end surface of the fifteenth rectangular metal block is respectively connected to the upper end surface of the fifth rectangular groove and the upper end surface of the sixth rectangular groove and is in a fitted state; the lower end surface of the fifteenth rectangular metal block is located above the lower end surface of the fifth rectangular groove and the lower end surface of the sixth rectangular groove, and the distance between the lower end surface of the fifteenth rectangular metal block and the lower end surface of the fifth rectangular groove and the lower end surface of the sixth rectangular groove is equal;The front end face of the fifteenth rectangular metal block is connected to the rear end face of the fourteenth rectangular metal block and the two are in a fitted state; the left end face of the fifteenth rectangular metal block is flush with the left end face of the fourteenth rectangular metal block; the right end face of the fifteenth rectangular metal block is flush with the right end face of the fourteenth rectangular metal block; the rear end face of the fifteenth rectangular metal block is located between the front end face of the sixth rectangular groove and the rear end face of the sixth rectangular groove; the first coaxial structure includes a first cylindrical groove and a first cylindrical metal block, the first cylindrical groove is opened in the third metal plate, the first cylindrical groove is located below the sixth rectangular groove, and the upper end face of the first cylindrical groove is flush with the The lower end surface of the sixth rectangular groove is located in the same plane, the axis of the first cylindrical groove is located on the rear side of the plane where the front end surface of the sixth rectangular groove is located, and there is a distance between the two, the axis of the first cylindrical groove is located on the front side of the plane where the rear end surface of the sixth rectangular groove is located, and there is a distance between the two, the axis of the first cylindrical groove is located on the right side of the plane where the left end surface of the sixth rectangular groove is located, and there is a distance between the two, the axis of the first cylindrical groove is located on the left side of the plane where the right end surface of the sixth rectangular groove is located, and there is a distance between the two, the lower end surface of the first cylindrical groove is located above the lower end surface of the third metal plate, and there is a distance between the two; The first cylindrical metal block is arranged in the first cylindrical groove and the sixth rectangular groove, the first cylindrical metal block is coaxial with the first cylindrical groove, the radius of the first cylindrical metal block is smaller than the radius of the cylindrical groove, the upper end face of the first cylindrical metal block is connected to the lower end face of the fifteenth rectangular metal block and the two are in a fitted state, the lower end face of the first cylindrical metal block is connected to the lower end face of the first cylindrical groove and the two are in a fitted state, the upper end face of the fourth rectangular groove is the output port of the H-face to E-face coaxial to double-ridge structure, and the lower end face of the cylindrical groove is the input port of the H-face to E-face coaxial to double-ridge structure; the Y-type power divider has one input port and two output ports, the Y-shaped power divider is realized by slotting the third metal plate; the H-plane coaxial to single-ridge structure includes two rectangular slots opened in the third metal plate, a sixteenth rectangular metal block, a seventeenth rectangular metal block, an eighteenth rectangular metal block, and a second coaxial structure; the two rectangular slots are respectively referred to as the seventh rectangular slot and the eighth rectangular slot, the lower end face of the seventh rectangular slot and the upper end face of the fourth rectangular slot are located in the same plane, the right end face of the seventh rectangular slot is located to the left of the plane where the left end face of the fourth rectangular slot is located, and there is a distance between the two; the front end face of the seventh rectangular slot is located in front of the plane where the front end face of the fourth rectangular slot is located, and there is a distance between the two;The rear end face of the seventh rectangular groove is located on the rear side of the plane where the rear end face of the fourth rectangular groove is located, and there is a distance between the two; the distance between the front end face of the seventh rectangular groove and the plane where the front end face of the fourth rectangular groove is located is equal to the distance between the rear end face of the seventh rectangular groove and the plane where the rear end face of the fourth rectangular groove is located, the upper end face of the seventh rectangular groove is located below the upper end face of the third metal plate, the length of the seventh rectangular groove in the left-right direction is greater than the length of the fourth rectangular groove in the left-right direction; the height of the seventh rectangular groove in the up-down direction is smaller than the height of the fourth rectangular groove in the up-down direction; the edge of the left rear side of the seventh rectangular groove is chamfered; the eighth The rectangular groove is located on the front side of the seventh rectangular groove, the left end face of the eighth rectangular groove is flush with the left end face of the seventh rectangular groove, the right end face of the eighth rectangular groove is located on the left side of the plane where the right end face of the seventh rectangular groove is located, and there is a distance between the two; the upper end face of the eighth rectangular groove is flush with the upper end face of the seventh rectangular groove, the lower end face of the eighth rectangular groove is flush with the lower end face of the seventh rectangular groove, the rear end face of the eighth rectangular groove is connected to the front end face of the seventh rectangular groove and the two are in a fitted state; the width of the eighth rectangular groove along the front-to-back direction is larger than the width of the seventh rectangular groove along the front-to-back direction; the sixteenth rectangular metal block is located in the seventh rectangular groove, The right end face of the sixteenth rectangular metal block is connected to the right end face of the seventh rectangular groove and the two are in a fitted state, the upper end face of the sixteenth rectangular metal block is flush with the upper end face of the seventh rectangular groove, the lower end face of the sixteenth rectangular metal block is located above the lower end face of the seventh rectangular groove, and there is a distance between the two, the front end face of the sixteenth rectangular metal block is located behind the front end face of the seventh rectangular groove, and there is a distance between the two; the rear end face of the sixteenth rectangular metal block is located in front of the rear end face of the seventh rectangular groove, and there is a distance between the two; the left front edge of the sixteenth rectangular metal block is chamfered, and the left rear edge is chamfered; The seventh rectangular metal block is located in the seventh rectangular groove, the seventeenth rectangular metal block is located in front of the sixteenth rectangular metal block, the left end face of the seventeenth rectangular metal block is flush with the left end face of the sixteenth rectangular metal block, the rear end face of the seventeenth rectangular metal block is connected to the front end face of the sixteenth rectangular metal block, and the two are in a bonded state; the upper end face of the seventeenth rectangular metal block is flush with the upper end face of the sixteenth rectangular metal block, the lower end face of the seventeenth rectangular metal block is flush with the lower end face of the sixteenth rectangular metal block, and the right end face of the seventeenth rectangular metal block is located to the left of the plane where the right end face of the sixteenth rectangular metal block is located, and there is a distance between the two;The width of the seventeenth rectangular metal block in the front-to-back direction is greater than the width of the sixteenth rectangular metal block in the front-to-back direction; the eighteenth rectangular metal block is located in the seventh rectangular groove and the eighth rectangular groove; the eighteenth rectangular metal block is located in the front side of the seventeenth rectangular metal block; the rear end face of the eighteenth rectangular metal block is connected to the front end face of the seventeenth rectangular metal block and the two are in a fitted state; the upper end face of the eighteenth rectangular metal block is flush with the upper end face of the seventeenth rectangular metal block, and the lower end face of the eighteenth rectangular metal block is flush with the upper end face of the seventeenth rectangular metal block. The lower end faces of the rectangular metal blocks are flush, the front end face of the eighteenth rectangular metal block is located behind the front end face of the eighth rectangular groove, and there is a distance between the two; the left end face of the eighteenth rectangular metal block is located to the right of the plane where the left end face of the seventeenth rectangular metal block is located, and there is a distance between the two; the right end face of the eighteenth rectangular metal block is located to the left of the plane where the right end face of the seventeenth rectangular metal block is located, and there is a distance between the two; the width of the eighteenth rectangular metal block in the front-to-back direction is greater than the width of the seventeenth rectangular metal block in the front-to-back direction Large; the second coaxial structure includes a second cylindrical groove and a second cylindrical metal block, the second cylindrical groove is opened in the third metal plate, the second cylindrical groove is located below the eighth rectangular groove, the upper end face of the second cylindrical groove and the lower end face of the eighth rectangular groove are located in the same plane, the axis of the second cylindrical groove is located on the rear side of the plane where the front end face of the eighth rectangular groove is located, and there is a distance between the two, the axis of the second cylindrical groove is located on the front side of the plane where the rear end face of the eighth rectangular groove is located, and there is a distance between the two, the The axis of the second cylindrical groove is located on the right side of the plane where the left end face of the eighth rectangular groove is located, and there is a distance between the two. The axis of the second cylindrical groove is located on the left side of the plane where the right end face of the eighth rectangular groove is located, and there is a distance between the two. The distance between the axis of the second cylindrical groove and the plane where the left end face of the eighth rectangular groove is located is equal to the distance between the axis of the second cylindrical groove and the plane where the right end face of the eighth rectangular groove is located. The lower end face of the second cylindrical groove is located above the lower end face of the third metal plate, and there is a distance between the two.The second cylindrical metal block is arranged in the second cylindrical groove and the eighth rectangular groove, the second cylindrical metal block is coaxial with the second cylindrical groove, the radius of the second cylindrical metal block is smaller than the radius of the second cylindrical groove, the upper end face of the second cylindrical metal block is connected to the lower end face of the eighteenth rectangular metal block and the two are in a fit state, the lower end face of the second cylindrical metal block is connected to the lower end face of the second cylindrical groove and the two are in a fit state, the front end face of the seventh rectangular groove is the output port of the H-face coaxial to single-ridge structure, and the lower surface of the second cylindrical groove is the input port of the H-face coaxial to single-ridge structure; the input port of the H-face to E-face coaxial to double-ridge structure is the first input port of the magic T, the input port of the H-face coaxial to single-ridge structure is the second input port of the magic T, and the The output port of the ridge structure and the output port of the H-plane coaxial-to-single-ridge structure are both connected to the input port of the Y-type power divider. The two output ports of the Y-type power divider serve as the two output ports of the magic T. The first adapter and the second adapter each have an input port and an output port. The first adapter and the second adapter are used to perform the conversion from a single-ridge waveguide structure to a micro-coaxial structure. The two output ports of the magic T are respectively connected to the input ports of the first adapter and the second adapter. The first input port of the magic T serves as the first input port of the first feeding component, the second input port of the magic T serves as the second input port of the first feeding component, the output port of the first adapter serves as the first output port of the first feeding component, and the output port of the second adapter serves as the second output port of the first feeding component. The second feeding assembly includes two one-to-sixteen power dividers based on a micro-coaxial structure and two groups of adapters; the two one-to-sixteen power dividers are respectively referred to as a first power divider and a second power divider; the first power divider and the second power divider each have an input port and sixteen output ports; the first power divider and the second power divider are respectively implemented by slotting the third metal plate, and the two groups of micro adapters are respectively referred to as a first group of adapters and a second group of adapters; the first group of adapters consists of 16 identical third adapters, which are used for switching from a micro-coaxial structure to a single-ridge structure, and the third adapter has an input port and an output port. The 16 third adapters are evenly spaced in 4 rows and 4 columns, and the row direction is along the front-to-back direction, and the column direction is along the left-to-right direction. The spacing between each two adjacent third adapters in the same row is 19 mm, and the spacing between each two adjacent third adapters in the same column is 19 mm; the input ports of the 16 third adapters are connected one-to-one with the sixteen output ports of the first power divider, and the second group of adapters is composed of 16 identical fourth adapters, which are used for connecting the micro-coaxial structure to the single-ridge structure. The fourth adapter has an input port and an output port. The 16 fourth adapters are evenly spaced in 4 rows and 4 columns, and the row direction is along the front-to-back direction, and the column direction is along the left-to-right direction. The spacing between each two adjacent fourth adapters in the same row is 19 mm, and the spacing between each two adjacent fourth adapters in the same column is 19 mm; the input ports of the 16 fourth adapters are connected one-to-one with the sixteen output ports of the second power divider, and the The input port of the first power divider is the first input port of the second feeding assembly, the input port of the second power divider is the second input port of the second feeding assembly, the output ports of the 16 third adapters are the first group of output ports of the second feeding assembly, the output ports of the 16 fourth adapters are the second group of output ports of the second feeding assembly, the first output port of the first feeding assembly is connected to the first input port of the second feeding assembly, the second output port of the first feeding assembly is connected to the second input port of the second feeding assembly, the first input port of the first feeding assembly serves as the first input port of the broadband dual-polarized antenna array, the second input port of the first feeding assembly serves as the second input port of the broadband dual-polarized antenna array, the first group of output ports of the second feeding assembly is connected to the first input ports of the 16 radiating elements in a one-to-one correspondence, and the second group of output ports of the second feeding assembly is connected to the second input ports of the 16 radiating elements in a one-to-one correspondence.

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