A broadband high-gain magnetoelectric dipole transmission array antenna unit and transmission array antenna

Abstract

The present invention discloses a broadband high-gain magnetoelectric dipole transmission array antenna unit and a transmission array antenna, wherein the receiving antenna comprises a bottom metal layer, a first dielectric layer, a second metal layer, a first bonding layer, a second dielectric layer and a receiving end metal floor; the transmitting antenna comprises a top metal layer, a third dielectric layer, a fourth metal layer, a second bonding layer, a fourth dielectric layer and a transmitting end metal floor; the receiving antenna and the transmitting antenna both further comprise electric dipoles and magnetic dipoles; the magnetoelectric dipole structure is formed in the form of metal patches and metal through holes, a bent central feed structure is adopted to ensure that the antenna has good matching within the working frequency band, and two sets of central feed structures pointing orthogonally are used to realize independent regulation of two orthogonal linear polarized electromagnetic waves. The present invention can use a 1-bit phase compensation method to realize a broadband transmission array antenna with higher gain within a frequency range covering but not limited to the 5G frequency band, and the maximum gain and maximum efficiency can reach 24.5dBi and 31% respectively.

Description

Technical Field

[0001] The present invention relates to the technical field of wireless communication system antennas, and in particular to a broadband high-gain magneto-electric dipole transmission array antenna unit and a transmission array antenna. Background Art

[0002] Array antenna is a special type of antenna that has at least two antenna elements arranged regularly or randomly and obtains predetermined radiation characteristics through appropriate excitation. The radiated electromagnetic field of the array antenna is the sum (vector sum) of the radiation fields of each element that makes up the antenna array. Since the position of each element and the amplitude and phase of the feed current can be adjusted independently, the array antenna has various functions.

[0003] As a high-gain antenna with the advantages of planar wavefront, no feed source obstruction, and easy processing, the transmission array antenna is widely used in communication fields such as long-distance communication and remote sensing detection.

[0004] However, currently, most units of transmission array antennas are in the form of microstrip antennas or dipole antennas, so that the gain of the final transmission array is restricted by the narrow working bandwidth of the unit. Summary of the invention

[0005] Purpose of the invention: The present invention aims to provide a broadband high-gain magnetoelectric dipole transmission array antenna unit and transmission array antenna. The antenna unit utilizes a magnetoelectric dipole antenna structure composed of a metal patch and a metallized via, which expands the working bandwidth of the antenna, and uses a bent central feeding structure to ensure that the antenna has good matching within the working frequency band. In addition, two sets of orthogonal feeding probes are used to realize the independent control of orthogonal linear polarized electromagnetic waves, and the beam convergence of the transmitted wave is realized by changing the relative directions of the feeding probes at the receiving end and the transmitting end of different units.

[0006] Technical solution:

[0007] The present invention provides a broadband high-gain magneto-electric dipole transmission array antenna unit and a transmission array antenna, wherein the transmission array antenna unit comprises a receiving antenna and a transmitting antenna;

[0008] The receiving antenna comprises, from bottom to top, a bottom metal layer, a first dielectric layer, a second metal layer, a first adhesive layer, a second dielectric layer, and a receiving-end metal floor;

[0009] The transmitting antenna comprises, from top to bottom, a top metal layer, a third dielectric layer, a fourth metal layer, a second adhesive layer, a fourth dielectric layer, and a transmitting end metal floor;

[0010] The receiving antenna and the transmitting antenna both further include an electric dipole and a magnetic dipole. The electric dipoles in the receiving antenna and the transmitting antenna are respectively located in the bottom metal layer and the top metal layer, and are both composed of metal patch groups in the bottom metal layer and the top metal layer; the magnetic dipole is located inside the receiving antenna and the transmitting antenna, and is composed of a plurality of adjacent metallized via groups;

[0011] The receiving antenna and the transmitting antenna are connected via a third adhesive layer.

[0012] Preferably, metal patch groups are provided in the bottom metal layer and the top metal layer, each of the metal patch groups includes four square metal patches of the same size, the four square metal patches are centrally symmetrical about the center point of the metal patch group, and the side length of the square metal patch is one quarter of the waveguide resonance wavelength.

[0013] Preferably, the sum of the thicknesses of the first dielectric layer, the first adhesive layer and the second dielectric layer in the receiving antenna is a quarter of the waveguide resonant wavelength; the sum of the thicknesses of the third dielectric layer, the second adhesive layer and the fourth dielectric layer in the transmitting antenna is a quarter of the waveguide resonant wavelength.

[0014] Preferably, a plurality of the square metal patches are provided with metallized via groups at two relative corners, and a plurality of pairs of the metallized via groups include three first metallized vias, and a plurality of the first metallized vias penetrate from the top metal layer to the bottom metal layer, and the inner walls of the plurality of the first metallized vias are plated with metal, which is connected to the metal at both ends of the vias to achieve current conduction.

[0015] Preferably, a first feeding structure is further provided in the transmission array antenna unit, and the first feeding structure, four square metal patches around it, and a plurality of first metallized vias provided on the four square metal patches constitute a broadband magneto-electric dipole antenna group, and the polarization direction of electromagnetic waves received and transmitted by the broadband magneto-electric dipole antenna group is parallel to that of the first feeding structure.

[0016] Preferably, the first feeding structure includes an upper feeding probe and a lower feeding probe, the upper feeding probe and the lower feeding probe are respectively located in the transmitting antenna and the receiving antenna, and are connected through a second metallized via, and the starting ends of the second metallized via are respectively located in the top metal layer and the bottom metal layer.

[0017] Preferably, the upper feeding probe and the lower feeding probe both include a long metal patch and a short metal patch, one end of the short metal patch is connected to the long metal patch through a metal blind hole, and the other end is rotatably connected to the second metalized via, the two metal blind holes respectively penetrate the third dielectric layer and the first dielectric layer, the two long metal patches are respectively located at the top metal layer and the bottom metal layer, the two short metal patches are respectively located at the fourth metal layer and the second metal layer, and the broadband magneto-electric dipole antenna group receives and transmits electromagnetic waves in a polarization direction parallel to that of the upper feeding probe and the lower feeding probe.

[0018] Preferably, long feeding components are provided at two right angles on one side of the transmission array antenna unit, and short feeding components are provided at two right angles on the other side thereof. When four transmission array antenna units form an array of ×, a second feeding structure is formed at the center position of the × array, and the second feeding structure has the same structure and size as the first feeding structure.

[0019] A broadband high-gain magneto-electric dipole transmission array antenna, wherein the transmission array antenna is composed of a matrix formed by N×N transmission array antenna units, wherein N≥ and is an integer.

[0020] Preferably, any × small arrays in the N×N matrix can form the second feeding structure at the center position of the array.

[0021] Beneficial effects: The present invention discloses a broadband high-gain magnetoelectric dipole transmission array antenna unit and a transmission array antenna, which can realize beam convergence of linear polarized waves in two orthogonal directions within a wider bandwidth, and can obtain a stable radiation pattern within the band. The present invention forms a magnetoelectric dipole structure in the form of metal patches and metal through holes, and adopts a bent central feeding structure to ensure that the antenna has good matching within the working frequency band. The direction of the probe in the feeding structure determines the polarization direction of the electromagnetic wave that it can control. A 1-bit phase compensation method can be achieved by changing the relative direction of the feeding probes in the receiving antenna and the transmitting antenna. The entire structure has a relatively low subwavelength profile, and the antenna is manufactured and processed using a mature and low-cost PCB process. The present invention can use a 1-bit phase compensation method to achieve a high-gain broadband transmission array antenna within a frequency range covering but not limited to the 5G frequency band (25-31.6GHz), and the maximum gain and maximum efficiency can reach 24.5dBi and 31%, respectively. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the antenna unit of the present invention.

[0023] Figure 2 It is a side view of the antenna unit of the present invention.

[0024] Figure 3 It is a top view of the antenna unit of the present invention.

[0025] Figure 4 It is a side view of the first feeding structure of the antenna unit of the present invention.

[0026] Figure 5 It is a schematic diagram of the structure of the first feeding structure of the antenna unit of the present invention and the current flow direction.

[0027] Figure 6 Schematic diagram showing the same extension direction of the feeding probes of the present invention.

[0028] Figure 7 It is a schematic diagram showing that the extending directions of the feeding probes of the present invention are opposite.

[0029] Figure 8 The present invention uses commercial simulation software to simulate the transmission coefficient amplitude and phase of the feeding probe in different relative directions under periodic boundary conditions.

[0030] Fig. 9 It is a schematic diagram of a second feeding structure and antenna unit formed at the center of a 2×2 array in a specific implementation manner of the present invention.

[0031] Fig.10 It is a simulation result of the transmission coefficient of the antenna unit under periodic boundary conditions using commercial simulation software in a specific embodiment of the present invention.

[0032] Fig.11 Schematic diagram of the phase compensation solution of embodiment 1 of the present invention.

[0033] Fig.12 It is a comparative schematic diagram of Example 1 of the present invention.

[0034] Fig.13 This is a physical diagram of Example 1 of the present invention.

[0035] Fig.14 This is the directional diagram simulated and tested at 27 GHz in Example 1 of the present invention when the incident wave is a linearly polarized wave in the x-direction.

[0036] Fig.15 This is the directional diagram simulated and tested at 27 GHz in Example 1 of the present invention when the incident wave is a linearly polarized wave in the y direction.

[0037] Fig.16 These are the test and simulation results of the maximum gain of Example 1 of the present invention in the 23-33 GHz frequency band as a function of the operating frequency.

[0038] Fig.17Schematic diagram of the phase compensation solution of embodiment 2 of the present invention.

[0039] Fig.18 This is a comparative schematic diagram of Example 2 of the present invention.

[0040] Fig.19 This is the directional diagram simulated and tested at 27 GHz for Example 2 of the present invention when the incident wave is a linearly polarized wave in the x-direction.

[0041] Fig. 20 This is the directional diagram simulated and tested at 27 GHz for Example 2 of the present invention when the incident wave is a linearly polarized wave in the y direction.

[0042] Fig.21 Schematic diagram of the phase compensation solution of embodiment 3 of the present invention.

[0043] Fig. 22 This is the directional diagram of the simulation and test of Example 3 of the present invention at 27 GHz.

[0044] Figure numerals: 1, receiving antenna; 2, transmitting antenna; 3, bottom metal layer; 4, first dielectric layer; 5, second metal layer; 6, first bonding layer; 7, second dielectric layer; 8, receiving end metal floor; 9, top metal layer; 10, third dielectric layer; 11, fourth metal layer; 12, second bonding layer; 13, fourth dielectric layer; 14, transmitting end metal floor; 15, third bonding layer; 16, first feeding structure; 17, square metal patch; 18, first metallized via; 19, upper feeding probe; 20, lower feeding probe; 21, long strip metal patch; 22, short strip metal patch; 23, metal blind hole; 27, second metallized via; 28, long feeding component; 28-1, short feeding component; 29, second feeding structure. DETAILED DESCRIPTION

[0045] In order to further illustrate the technical solution disclosed in the present invention, the technical solution of the present invention is further described below in conjunction with specific implementation methods and drawings. The embodiments described below are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0046] A broadband high-gain magneto-electric dipole transmission array antenna unit and a transmission array antenna, wherein the transmission array antenna unit comprises a receiving antenna 1 and a transmitting antenna 2;

[0047] The receiving antenna 1 comprises, from bottom to top, a bottom metal layer 3, a first dielectric layer 4, a second metal layer 5, a first adhesive layer 6, a second dielectric layer 7 and a receiving-end metal floor 8;

[0048] The transmitting antenna 2 comprises, from top to bottom, a top metal layer 9, a third dielectric layer 10, a fourth metal layer 11, a second adhesive layer 12, a fourth dielectric layer 13 and a transmitting end metal floor 14;

[0049] The receiving antenna 1 and the transmitting antenna 2 also include an electric dipole and a magnetic dipole. The electric dipole is located in the bottom metal layer 3 and the top metal layer 9 respectively; the magnetic dipole is located inside the receiving antenna 1 and the transmitting antenna 2 respectively;

[0050] The receiving antenna 1 and the transmitting antenna 2 are connected via a third adhesive layer 15 .

[0051] The first feeding structure 16 in the receiving antenna 1 or the transmitting antenna 2 and the surrounding square metal patches 17 and metallized vias 18 form a broadband magnetoelectric dipole antenna structure, and the polarization direction of the received and transmitted electromagnetic waves is parallel to the direction of the two patch groups.

[0052] The bottom metal layer 3 of the receiving antenna 1 and the top metal layer 9 of the transmitting antenna 2 each have four square metal patches 17 of the same size and mirror-symmetrical positions. The metal patches 17 on the same metal layer are symmetrical about the center of the metal layer and have a certain spacing between each other. The side length of the metal patch 17 is one quarter of the waveguide resonance wavelength.

[0053] The bottom metal layer 3 and the metal patch 17 in the mirror position in the top metal layer 9 are connected by a metallized via 18, and the metallized via 18 runs through the entire antenna from the top metal layer 3 to the bottom metal layer 9. Several metallized vias 18 surrounding the first feeding structure 16 constitute the magnetic dipole part of the antenna.

[0054] The sum of the thicknesses of the first dielectric layer 4, the first adhesive layer 6 and the second dielectric layer 7 in the receiving antenna 1 is a quarter of the waveguide resonant wavelength; correspondingly, the sum of the thicknesses of the third dielectric layer 10, the second adhesive layer 12 and the fourth dielectric layer 13 in the transmitting antenna is a quarter of the waveguide resonant wavelength.

[0055] In all embodiments of the present specification, the first dielectric layer 4 , the second dielectric layer 7 , the third dielectric layer 10 and the fourth dielectric layer 13 are made of Rogers 4350B, and the first adhesive layer 6 , the second adhesive layer 12 and the third adhesive layer 15 are made of Rogers 4450F.

[0056] like Figure 5 As shown, the first feeding structure 16 includes an upper feeding probe 19 and a lower feeding probe 20, which are respectively located in the transmitting antenna 2 and the receiving antenna 1, and are connected through a metallized via 27 that runs through the entire receiving antenna 1 and the transmitting antenna 2.

[0057] like Figure 4 As shown, the upper feeding probe 19 and the lower feeding probe 20 both include a patch group, and the two patch groups both include a long strip metal patch 21 and a short strip metal patch 22. One end of the short strip metal patch 22 is connected to the long strip metal patch 21 through a metal blind hole 23, and the other end thereof and the long strip metal patch 21 are rotatably connected to the second metalized via hole. The two metal blind holes 23 are respectively opened in the third dielectric layer 10 and the first dielectric layer 4. The two long strip metal patches 21 are respectively located at the top metal layer 9 and the bottom metal layer 3. The two short strip metal patches 22 are respectively located at the fourth metal layer 11 and the second metal layer 5. The polarization direction of the broadband magneto-electric dipole antenna group receiving and transmitting electromagnetic waves is parallel to the direction of the upper feeding probe 19 or the lower feeding probe 20.

[0058] like Figure 5 As shown, the upper feeding probe 19 and the lower feeding probe 20 can allow the current to move along the curved path formed by the long metal patch 21, the short metal patch 22 and the metal blind hole 23 (22 to 23 to 21 or the reverse order), so that the antenna has good matching characteristics and expands the bandwidth of the antenna.

[0059] like Figure 6 and 7 As shown, the upper feeding probe 19 and the lower feeding probe 20 in the first feeding structure 16 can rotate around the second metallized via 27. Theoretically, the feeding probe 19 can have multiple rotation conditions. In order to ensure that the antenna can receive and transmit linearly polarized electromagnetic waves in the same direction, the upper feeding probe 19 and the lower feeding probe 20 should always remain parallel and parallel to the polarization direction of the received and transmitted linearly polarized electromagnetic waves. Therefore, in actual use, only the two conditions of the upper and lower feeding probes pointing in the same and opposite directions are used. The corresponding transmission units have two identical transmission coefficient amplitudes, but the phase difference is 180°. Therefore, the transmission array antenna unit described in the present invention can be used to form a transmission array using a 1-bit phase compensation method. By setting the directions of the upper feeding probes 19 and the lower feeding probes 20 of different units in the array, the beam convergence of the transmission wave is achieved.

[0060] like Figure 8 As shown, commercial simulation software is used to simulate two situations in which the upper feeding probe 19 and the lower feeding probe 20 are relatively pointed under periodic boundary conditions. In the frequency band of 24-30 GHz, the transmission coefficients of the two situations differ by 180°, while the amplitudes of the transmission coefficients are the same. Therefore, the transmission array unit shown in the present invention can be applied to the 1-bit phase compensation method.

[0061] like Fig. 9As shown, the first feeding structure 16 is divided into four parts around the center of the metallized via 27 and placed in the four corners of the antenna unit respectively. The effect of this is that when the four antenna units form a 2×2 array, a second feeding structure 29 can be formed at the center of the 2×2 array, and the extension direction of the upper and lower patch groups in the second feeding structure 29 is orthogonal to the extension direction of the upper and lower patch groups in the first feeding structure 16.

[0062] The structure scale of the transmission array antenna may be an N×N array, where N≥2, and the second feeding structure 29 may be formed at the center of any 2×2 small array in the N×N array.

[0063] In the first feeding structure 16 and the second feeding structure 29 in the N×N array, the extension directions of their respective feeding probes are orthogonal. Therefore, according to the first and second feeding probe structures, the N×N array can be functionally divided into two arrays, and the beam convergence of two orthogonal linear polarized waves can be independently realized respectively, wherein the polarization direction of the linear polarized wave is parallel to the extension direction of the upper feeding probe 19 or the lower feeding probe 20. There is a common metal patch 17 between the two antenna arrays, but the two groups of antenna arrays will not affect each other, thereby enabling the entire transmission array antenna to achieve independent control of the two linear polarized waves with orthogonal polarization directions.

[0064] like Fig.10 As shown, in order to further illustrate the influence between the two groups of antenna arrays, in the frequency band of 24-30GHz, the antenna can maintain a low transmission loss for linearly polarized waves whose polarization direction is parallel to the extension direction of its feeding probe (long metal patch 21 and short metal patch 22); and for cross-polarization, that is, linearly polarized waves whose polarization direction is orthogonal to the extension direction of the long metal patch 21 and the short metal patch 22, the transmission coefficient amplitude of the antenna is maintained below -20dB in the frequency band of 24-30GHz, indicating that the two groups of antenna arrays have little influence on each other.

[0065] In order to further verify the feasibility of a broadband high-gain dual-polarized magneto-electric dipole transmission array antenna provided by the present invention, a 16×16 array embodiment of a disclosed broadband high-gain magneto-electric dipole transmission array antenna was simulated and physically processed and tested using commercial simulation software, and the results were compared, wherein the beam convergence direction of the array was perpendicular to the transmission array plane.

[0066] In this embodiment, the directions of the lower feeding probes 20 in the receiving antennas 1 in the transmission array are the same, and only the directions of the upper feeding probes 19 in the transmitting antennas 2 are changed.

[0067] In this embodiment, a horn antenna model XB-GH34 is used as the feed source, and the focal ratio is set to 1.07.

[0068] like Fig.11 and 12 As shown, a phase compensation scheme of a transmission array antenna, wherein if the colors of corresponding positions in the receiving antenna 1 and the transmitting antenna 2 are different, it means that the upper feeding probe 19 and the lower feeding probe 20 at the corresponding positions of the two extend in different directions, and if the colors are the same, it means that the lower feeding probe 20 and the upper feeding probe 19 at the corresponding positions of the two extend in the same direction.

[0069] like Fig.13 As shown, orthogonal linear polarized waves are received and transmitted respectively by two groups of feeding probes with orthogonal extension directions and the magneto-electric dipole transmission array antennas they participate in constituting. Although the two groups of antenna arrays are physically offset in the center of the array, the offset is symmetrical about the center of the array, and both have the same number of units.

[0070] like Fig.14 and Fig.15 As shown, the radiation pattern simulation and test results of this embodiment at a frequency of 27 GHz, in both polarization cases, the side lobes of the main polarization radiation pattern are lower than -15 dB, the cross polarization is lower than -20 dB, and the simulation results of the main polarization are basically consistent with the test results.

[0071] like Fig.16 As shown, the test and simulation results of the maximum gain of this embodiment in the 23-33 GHz frequency band vary with the operating frequency. The maximum gain can reach 24.5 dBi, the maximum efficiency can reach 31%, the 3-dB gain bandwidth can reach 23%, and the frequency band covered is 25-31.6 GHz.

[0072] Example 2

[0073] like Fig.17 and 18 The embodiment shown in the figure changes the phase compensation scheme based on the embodiment 1 to further suppress the cross polarization. In the specific phase compensation scheme, the direction of the down-feed probe 20 in the receiving antenna 1 is no longer the same.

[0074] like Fig.19 and Fig. 20 As shown, the radiation pattern simulation and test results of this embodiment at 27GHz, in both polarization conditions, the side lobes of its main polarization radiation pattern are lower than -15dB, the cross polarization is reduced by 3-5dB compared with Example 1, and is still below -20dB, the cross polarization of the x-polarization direction wave reaches below -25dB, and the simulation results of the main polarization are basically consistent with the test results.

[0075] Example 3

[0076] In order to further verify the feasibility of a broadband high-gain magnetoelectric dipole transmission array antenna provided by the present invention, a 16×16 transmission array composed of the antenna units is simulated and tested using commercial simulation software, and the results are compared.

[0077] like Fig.21 As shown, when designing the phase compensation scheme, the transmission wave beam directions of the x-polarized wave and the y-polarized wave are set to -20° and +20° respectively.

[0078] like Fig. 22 As shown in the figure, the radiation pattern simulation and test results of this embodiment at 27 GHz show that the side lobes of the two polarized waves are below -13 dB, and the simulation and measured results of the main polarization are basically consistent.

[0079] From the simulation and test results of Examples 1-3, the transmission array antenna and its units in the present invention can independently control the linear polarization waves with two orthogonal polarization directions within the frequency range covering 5G millimeter waves (24.25GHz-29.5GHz), and have a wide bandwidth and a stable radiation pattern within the band. In addition, in the present invention, the transmission arrays in the embodiments all adopt a relatively mature PCB process, which is low in cost and is conducive to array expansion and large-scale production.

[0080] The matters not described in detail in the present invention are all known technologies to those skilled in the art.

[0081] The preferred specific embodiments of the present invention are described in detail above. It should be understood that a person skilled in the art can make many modifications and changes based on the concept of the present invention without creative work. Therefore, any technical solution that can be obtained by a person skilled in the art through logical analysis, reasoning or limited experiments based on the concept of the present invention on the basis of the prior art should be within the scope of protection determined by the claims.

Claims

1. A broadband high-gain magneto-electric dipole transmission array antenna unit, characterized in that: The transmission array antenna unit comprises a receiving antenna (1) and a transmitting antenna (2); The receiving antenna (1) comprises, from bottom to top, a bottom metal layer (3), a first dielectric layer (4), a second metal layer (5), a first adhesive layer (6), a second dielectric layer (7), and a receiving-end metal floor (8); The transmitting antenna (2) comprises, from top to bottom, a top metal layer (9), a third dielectric layer (10), a fourth metal layer (11), a second adhesive layer (12), a fourth dielectric layer (13), and a transmitting end metal floor (14); The receiving antenna (1) and the transmitting antenna (2) both further include an electric dipole and a magnetic dipole. The electric dipoles in the receiving antenna (1) and the transmitting antenna (2) are respectively located in the bottom metal layer (3) and the top metal layer (9), and are both composed of metal patch groups in the bottom metal layer (3) and the top metal layer (9); the magnetic dipole is located inside the receiving antenna (1) and the transmitting antenna (2), and is composed of a plurality of adjacent metallized via groups; The receiving antenna (1) and the transmitting antenna (2) are connected via a third adhesive layer (15); A metal patch group is provided in the bottom metal layer (3) and the top metal layer (9), each of the metal patch groups comprises four square metal patches (17) of the same size, the four square metal patches (17) are centrally symmetrical about the center point of the metal patch group, and the side length of the square metal patch (17) is one quarter of the waveguide resonance wavelength; The sum of the thicknesses of the first dielectric layer (4), the first adhesive layer (6) and the second dielectric layer (7) in the receiving antenna (1) is equal to one quarter of the waveguide resonant wavelength; the sum of the thicknesses of the third dielectric layer (10), the second adhesive layer (12) and the fourth dielectric layer (13) in the transmitting antenna (2) is equal to one quarter of the waveguide resonant wavelength; A plurality of the square metal patches (17) are each provided with a metallized via group at two opposite corners, and a plurality of pairs of the metallized via groups each include three first metallized vias (18), and the plurality of the first metallized vias (18) each penetrate from the top metal layer (9) to the bottom metal layer (3), and the inner walls of the plurality of the first metallized vias (18) are each plated with metal and connected to the metal at both ends of the vias to achieve current conduction; A first feeding structure (16) is also provided in the transmission array antenna unit, wherein the first feeding structure (16) and four surrounding square metal patches (17) and a plurality of first metallized vias (18) provided on the four square metal patches (17) form a broadband magneto-electric dipole antenna group, wherein the polarization direction of electromagnetic waves received and transmitted by the broadband magneto-electric dipole antenna group is parallel to that of the first feeding structure (16); The first feeding structures (16) each comprise an upper feeding probe (19) and a lower feeding probe (20), the upper feeding probe (19) and the lower feeding probe (20) being respectively located in the transmitting antenna (2) and the receiving antenna (1), and being connected via a second metallized via (27), the starting ends of the second metallized via (27) being respectively located in the top metal layer (9) and the bottom metal layer (3); The upper feeding probe (19) and the lower feeding probe (20) both comprise a long strip metal patch (21) and a short strip metal patch (22); one end of the short strip metal patch (22) is connected to the long strip metal patch (21) via a metal blind hole (23); the other end of the short strip metal patch (22) is rotatably connected to the second metalized via hole (27); the two metal blind holes (23) respectively penetrate the third dielectric layer (10) and the first dielectric layer (4); the two long strip metal patches (21) are respectively located on the top metal layer (9) and the bottom metal layer (3); the two short strip metal patches (22) are respectively located on the fourth metal layer (11) and the second metal layer (5); and the polarization direction of the electromagnetic waves received and transmitted by the broadband magnetoelectric dipole antenna group is parallel to the direction of the upper feeding probe (19) and the lower feeding probe (20).

2. The broadband high-gain magneto-electric dipole transmission array antenna unit according to claim 1, characterized in that: Long feeding components (28) are provided at two right angles on one side of the transmission array antenna unit, and short feeding components (28-1) are provided at two right angles on the other side. When four transmission array antenna units form a 2×2 array, a second feeding structure (29) is formed at the center of the 2×2 array. The second feeding structure (29) has the same structure and size as the first feeding structure (16).

3. A broadband high-gain magneto-electric dipole transmission array antenna, characterized in that: The transmission array antenna is composed of a matrix formed by N×N transmission array antenna units according to claim 1, wherein N≥2 And it is an integer.

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