A high unit pattern consistency base station antenna based on parasitic resonance decoupling and edge heterogeneity

Abstract

The application discloses a high-unit-direction-pattern consistency base station antenna based on parasitic resonance decoupling and edge heterostructure, and belongs to the technical field of wireless communication and antennas. The antenna comprises a metal floor, a plurality of dual-polarization antenna units arranged in a periodic array, a parasitic resonance decoupling structure between adjacent units and an edge heterostructure. The dual-polarization antenna unit adopts a miniaturized four-folded dipole structure, the parasitic resonance decoupling structure is a C-shaped metal strip printed on a dielectric substrate, and the edge heterostructure comprises a three-section metal strip at the edge of the edge unit radiator and a C-shaped metal strip with a differential height at the outermost layer of the array. The application can offset the mutual coupling between units, improve port isolation, correct the direction pattern distortion caused by the array edge truncation, realize high consistency of the direction pattern of the whole array unit, has a simple structure and is easy to assemble, does not additionally increase the volume of the antenna, is suitable for large-scale MIMO base station arrays, and can effectively improve the beamforming robustness and system transmission performance.

Description

Technical Field

[0001] This invention relates to the fields of wireless communication technology and antenna technology, and particularly to a high-cell orientation method based on parasitic resonance decoupling and edge heterogeneity. Figure 1 Coherent base station antennas and their design methods. Background Technology

[0002] With the rapid development of 5G and future 6G wireless communication technologies, massive MIMO technology has become a core technology for improving system capacity and spectrum efficiency. The scale of base station antenna arrays is constantly expanding. At the same time, in order to save space resources and reduce deployment costs, the array structure is becoming more compact and the spacing between units is continuously shrinking.

[0003] However, shortening the spacing between array elements leads to a sharp increase in electromagnetic mutual coupling between elements. This effect not only causes antenna impedance mismatch and a decrease in port isolation, but also causes severe distortion of the element radiation pattern, resulting in changes in the directional characteristics of each element in the array. Figure 1 The significant deterioration in radiation consistency directly impacts the signal coverage quality of base station antennas. Simultaneously, the inherent edge effects of large-scale antenna arrays further exacerbate this performance degradation: the electromagnetic environments of edge elements differ significantly from those of the central elements. Edge elements lack the electromagnetic boundary constraints of adjacent elements, resulting in significant deviations in their current distribution, impedance characteristics, and radiation characteristics from those of the central elements. This further amplifies the pattern differences between different elements within the array, severely disrupting the radiation consistency of the entire array. Furthermore, the directional... Figure 1 Inconsistency degradation severely restricts the beamforming performance of large-scale arrays. It not only significantly increases the computational overhead of beamforming precoding, but also reduces the robustness of beamforming, deteriorates the channel matrix condition number, and reduces spatial multiplexing efficiency and system data transmission rate.

[0004] Currently, extensive research has been conducted both domestically and internationally on array antenna decoupling technology. Mainstream solutions include decoupling networks, defective ground structures, frequency selective surfaces, self-isolation decoupling, and array decoupling surfaces. However, most existing research focuses on improving antenna port isolation and impedance matching performance, with few studies considering the antenna element direction as well. Figure 1 While improving isolation, some decoupling schemes introduce additional radiated interference, which in turn exacerbates pattern distortion and further undermines the consistency between elements.

[0005] To address the edge effect problem in large-scale arrays, the industry has developed mainstream solutions such as dummy element loading, electric wall construction, and heterogeneous edge element design. However, most existing edge effect processing technologies only focus on compensating for the impedance characteristics of edge elements, making it difficult to fundamentally correct the radiation pattern distortion of edge elements and thus unable to achieve directional distortion across all array elements. Figure 1While improving the consistency of the array, existing solutions are mostly individual optimization designs for edge effects, failing to achieve synergistic optimization with array decoupling technology. They often require the introduction of complex correction structures around the array, which not only increases the array's profile and occupied space but also introduces new electromagnetic coupling and radiation interference, further deteriorating the array's overall radiation performance.

[0006] In addition, there are a few existing directions mentioned. Figure 1 Research on consistency improvement often focuses on optimizing single scenarios such as mutual coupling suppression or edge effect correction, rarely achieving a synergistic balance between decoupling design and edge effect suppression. Furthermore, it generally lacks quantitative analysis and system verification of consistency improvement effects. Simultaneously, related optimized structures often suffer from design complexity, high fabrication and assembly difficulty, narrow operating bandwidth, and the potential to introduce additional losses that reduce antenna gain and radiation efficiency, making them unsuitable for the engineering application requirements of large-scale base station antenna arrays. Therefore, developing a structure that is simple in structure, easy to fabricate and assemble, and can simultaneously achieve mutual coupling suppression and edge effect correction between array elements, effectively improving port isolation and significantly improving the orientation of the entire array elements, is crucial. Figure 1 The consistent base station antenna technology has significant engineering value and research significance. Summary of the Invention

[0007] The technical problem solved by this invention is: This invention discloses a high-unit orientation based on parasitic resonance decoupling and edge heterogeneity. Figure 1 A consistent base station antenna achieves high isolation between antenna elements and high array directional stability without significantly increasing antenna structural complexity and size. Figure 1 It improves consistency and solves the problems of strong mutual coupling, severe pattern distortion, and poor consistency in existing compact arrays, thus adapting to the application requirements of large-scale MIMO base station antennas.

[0008] The present invention adopts the following technical solution:

[0009] A high-unit orientation based on parasitic resonance decoupling and edge heterogeneous synergy Figure 1A uniform base station antenna includes a metal ground plane, at least two dual-polarized antenna elements, a parasitic resonance decoupling structure, and an edge heterogeneous structure. The dual-polarized antenna elements are fixedly mounted on the metal ground plane, and multiple dual-polarized antenna elements are arranged in a periodic rectangular array on the metal ground plane to form a central radiation region and an edge radiation region. The parasitic resonance decoupling structure is disposed between two adjacent dual-polarized antenna elements. The parasitic resonance decoupling structure includes a dielectric substrate and a C-shaped metal strip printed on the dielectric substrate. The C-shaped metal strip is used to introduce an indirect coupling path with equal amplitude and opposite phase to the original coupling path between adjacent dual-polarized antenna elements to cancel the mutual coupling effect between elements and reduce the mutual coupling interference between elements within the array. The edge heterogeneous structure includes an edge element heterogeneous module and an edge parasitic metal strip heterogeneous module, which is used to correct the edge element pattern distortion caused by the array edge truncation effect and achieve amplitude and phase consistency of the radiation pattern of the entire array elements.

[0010] Furthermore, the dual-polarized antenna element is a miniaturized quadruple folded dipole antenna element, including a radiator, a feeding balun assembly, and a coaxial connector. The radiator is printed on a first dielectric substrate and includes four folded dipoles, four pairs of coplanar striplines, and eight drooping bent arms. The drooping bent arm structure enables miniaturization of the antenna element, increases the propagation attenuation of coupled waves between elements, and provides a basis for improving consistency. The feeding balun assembly includes two sets of orthogonally arranged balun substrates, which respectively feed the radiators in two orthogonal polarization directions. The coaxial connector is embedded on the back of the metal ground plane, with its inner core extending out of the upper surface of the metal ground plane and soldered to the feeding balun assembly to realize the antenna's feeding input.

[0011] Furthermore, the metal floor is provided with positioning slots that match the balun substrate, the drooping bent arm substrate, and the dielectric substrate of the parasitic resonance decoupling structure. The bottoms of the balun substrate, the drooping bent arm substrate, and the dielectric substrate of the parasitic resonance decoupling structure are all inserted into the positioning slots for fixation, which facilitates the positioning and installation of the antenna unit and the decoupling structure, and improves the stability and consistency of the structural assembly.

[0012] Furthermore, enlarged welding pads are provided at the connection points of the drooping bent arm and the folded dipole, and at the connection points of the balun substrate and the radiator. This solves the problem of small solder joints in traditional structures, which makes welding difficult and improves the feasibility of antenna engineering processing.

[0013] Furthermore, the balun substrate of the feed balun component adopts a multi-segment microstrip line structure. By adjusting the linewidth of the microstrip line to optimize impedance matching, the antenna unit has sufficient return loss margin and excellent port isolation performance in the target operating frequency band, which meets the error tolerance requirements of engineering processing.

[0014] Furthermore, by optimizing the linewidth and installation height of the C-shaped metal strip, the amplitude and phase characteristics of the indirect coupled wave can be precisely controlled, achieving efficient cancellation with the original coupled wave. The bottom of the C-shaped metal strip is provided with a downwardly extending plug-in part, which is inserted into the positioning slot of the metal ground plane to achieve the fixation and conformal of the parasitic resonance decoupling structure without the need for additional fixing structures and without increasing the lateral volume of the antenna.

[0015] Furthermore, the heterogeneous structure of the edge unit is a three-segment metal strip loaded on the edge of the radiator of the dual-polarized antenna unit in the edge radiation region of the array. The three-segment metal strip is printed on the first dielectric substrate where the radiator is located, and is set coplanarly with the radiator of the edge unit. Its direction is determined according to the edge direction of the edge unit in the array. By adjusting the length, width and spacing of the three-segment metal strip, the surface current distribution of the edge unit can be precisely controlled to counteract the radiation pattern distortion caused by the array edge truncation effect, correct the beam pointing offset problem of the edge unit, and achieve the matching of the radiation pattern of the edge unit and the center unit.

[0016] Furthermore, the heterogeneous structure of the edge parasitic metal strip is a highly differentiated outermost C-shaped metal strip of the array; the installation height of the outermost C-shaped metal strip is higher than the installation height of the C-shaped metal strips between adjacent units inside the array; by differentiating and increasing the installation height of the outermost parasitic metal strip, the consistency of the radiation pattern of the array units can be further improved without significantly affecting the radiation performance of the units inside the array, while reducing the negative impact of increasing the height of the parasitic strip across the entire domain on the radiation performance of the units.

[0017] Furthermore, multiple dual-polarized antenna elements are arranged in a rectangular array of H×V on a metal floor, where H is the number of horizontal array elements and V is the number of vertical array elements. The spacing between the horizontal and vertical elements is set according to the free space wavelength corresponding to the antenna center operating frequency, which can flexibly adapt to the needs of base station arrays of different sizes.

[0018] Furthermore, the metal ground plane is made of a highly conductive metal material and has threaded mounting holes that match the coaxial connector, so as to achieve stable installation and good grounding of the coaxial connector, while providing structural support and electromagnetic reference ground for the entire antenna.

[0019] The advantages of this invention compared to the prior art are:

[0020] (1) By setting a C-shaped parasitic resonance decoupling structure between adjacent antenna elements, the present invention introduces an indirect coupling path with equal amplitude and opposite phase to the original coupling, which effectively cancels the mutual coupling effect between elements and suppresses the scattering effect caused by the array edge truncation. While improving port isolation, it significantly improves the amplitude and phase consistency of the radiation pattern of each element in the array, and greatly improves the accuracy and robustness of large-scale array beamforming.

[0021] (2) The edge heterogeneous structure of the present invention adopts a two-dimensional heterogeneous design. On the one hand, by loading a three-segment metal strip at the edge of the edge unit radiator, the surface current distribution of the edge unit is precisely controlled to counteract the radiation pattern distortion caused by the edge truncation. On the other hand, by differentially increasing the installation height of the outermost parasitic metal strip of the array, the radiation performance of the entire array is further enhanced without affecting the radiation performance of the internal unit. Figure 1 To the point of being responsive.

[0022] (3) The miniaturized quadruple folded dipole antenna unit adopted in this invention is miniaturized by a drooping bent arm structure. At the same time, the feeding balun, welding pad, ground slot and coaxial feeding structure are optimized. It not only has the characteristics of wide bandwidth, high gain and good matching, but also greatly improves the feasibility of antenna processing and assembly, and solves the problems of high processing difficulty and insufficient matching margin of traditional similar units.

[0023] (4) The parasitic resonance decoupling structure and the edge heterogeneous structure of the present invention are both embedded designs and fixed by the ground slot. They do not increase the physical volume and cross-sectional height of the antenna. The structure is simple, the cost is low, and it is easy to mass-produce and assemble. It can be flexibly adapted to base station antenna arrays of different sizes and has excellent engineering application value.

[0024] (5) This invention improves isolation and orientation Figure 1 While maintaining consistency, it does not degrade the antenna gain and radiation efficiency. The antenna element has stable wide-beam radiation characteristics within the operating frequency band, which can effectively improve the spatial multiplexing efficiency and data transmission rate of large-scale MIMO systems. Attached Figure Description

[0025] Figure 1 In a specific embodiment of the present invention, the H6V24 high-cell direction Figure 1 A schematic diagram of the overall structure of a coherent base station antenna array;

[0026] Figure 2 This is a three-dimensional structural schematic diagram of the dual-polarized quadruple folded dipole antenna element in this invention;

[0027] Figure 3 This is a top view of the antenna element radiator in this invention.

[0028] Figure 4This is a schematic diagram of the antenna element feeding balun in this invention;

[0029] Figure 5 This is a planar schematic diagram of the C-shaped parasitic resonance decoupling structure in this invention;

[0030] Figure 6 This is a schematic diagram of the edge heterogeneous structure in this invention;

[0031] Figure 7 This is a comparison curve of the amplitude consistency of array units before and after loading the parasitic resonance decoupling structure in a specific embodiment of the present invention;

[0032] Figure 8 This is a comparison curve of the phase consistency of the array units before and after loading the parasitic resonance decoupling structure in a specific embodiment of the present invention. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to specific embodiments and the accompanying drawings in the embodiments of the present invention.

[0034] like Figure 1 As shown, the base station antenna in this embodiment includes a metal ground plane 1, 144 dual-polarized antenna elements 2, and multiple sets of parasitic resonance decoupling structures 3. The metal ground plane 1 is made of brass and is 6.8mm thick. It has 1mm deep positioning slots that match the balun substrate, the substrate of the drooping bent arm 213, and the dielectric substrate of the parasitic resonance decoupling structure 3. The bottom of each substrate is inserted into the slot for fixation, achieving precise positioning and stable installation. At the same time, 1mm×1mm solder pads are provided at the connection between the drooping bent arm 213 and the folded dipole 211, and at the connection between the balun substrate and the radiator 21, which greatly reduces the difficulty of soldering. The 144 dual-polarized antenna elements 2 are arranged in a rectangular array of 24 rows and 6 columns on the metal ground plane 1. The center operating frequency is 7.8GHz, the horizontal (H direction) element spacing is 20mm (corresponding to 0.52λ, where λ is the free space wavelength corresponding to the center frequency), and the vertical (V direction) element spacing is 26.15mm (corresponding to 0.68λ). The parasitic resonance decoupling structure 3 is set between two adjacent dual-polarized antenna elements 2 in the horizontal and vertical directions to achieve decoupling and consistency improvement between adjacent elements of the entire array.

[0035] like Figure 2As shown, the dual-polarized antenna element 2 is a miniaturized quadruple folded dipole antenna element, including a radiator 21, a feed balun assembly 22, and an SMP coaxial connector 23. The SMP coaxial connector 23 adopts the SMP-JYD5 model and is embedded on the back of the metal ground plate 1. The metal ground plate 1 has a 10-48UNS-2B internal thread hole at the corresponding position. The external thread of the SMP coaxial connector 23 is fixed by engaging with the internal thread hole. Its inner core extends 1mm out of the upper surface of the metal ground plate 1 and is welded to the feed balun assembly 22 to realize signal feeding.

[0036] like Figure 3 As shown, the radiator 21 is printed on a Rogers 4350 dielectric substrate with a thickness of 0.254 mm and a dielectric constant of 3.66. It includes four folded dipoles 211, four pairs of coplanar striplines 212, and eight drooping bent arms 213. The specific structural parameters are as follows: L1 is 10.5 mm, L2 is 7.22 mm, W1 is 0.17 mm, W2 is 0.38 mm, W3 is 1.09 mm, W4 is 0.84 mm, W5 is 0.18 mm, edge is 0.69 mm, gap is 0.25 mm, AD is 8.01 mm, Abd is 2.72 mm, Abl is 0.84 mm, g1 is 0.42 mm, g2 is 0.34 mm, and gw is 1.68 mm. The drooping bent arms 213 enable miniaturization of the antenna elements, increase the propagation attenuation of coupled waves between elements, and reduce mutual coupling effects.

[0037] like Figure 4 As shown, the power-fed balun module 22 includes two sets of orthogonally arranged balun substrates, corresponding to the +45° and -45° polarization directions respectively. The balun substrates are printed on a Rogers 4350 dielectric substrate with a thickness of 0.508 mm, and adopt a multi-segment microstrip line structure. The specific structural parameters are as follows: for the +45° polarized balun, L10 is 1 mm, W10 is 0.38 mm, L11 is 1.56 mm, W11 is 0.45 mm, L12 is 5.9 mm, W12 is 0.5 mm, and L13 is 0.6 mm and W13 is 0.2 mm. For the -45° polarized balun, L14 is 3.84 mm and W14 is 0.2 mm; L15 is 5.68 mm and W15 is 0.17 mm. For the -45° polarized balun, L20 is 1 mm and W20 is 0.38 mm; L21 is 1.6425 mm and W21 is 0.6 mm; L22 is 6.07 mm and W22 is 0.335 mm; L23 is 0.87 mm and W23 is 0.17 mm; L24 is 3.84 mm and W24 is 0.17 mm; and L25 is 6.49 mm and W25 is 0.17 mm. Impedance matching is optimized by improving the microstrip line width.

[0038] like Figure 5As shown, the parasitic resonance decoupling structure 3 includes a dielectric substrate 31 and a C-shaped metal strip 32 printed on the dielectric substrate 31. The dielectric substrate 31 has a thickness of 0.5 mm, a relative permittivity of 4.4, a length Ldeco of 14.4 mm, and a width Wdeco of 8 mm. The C-shaped metal strip 32 has a side width W1 of 1 mm, a main body width W2 of 0.6 mm, and a 5 mm long insertion part dca at the bottom. The insertion part is inserted into the positioning slot of the metal ground plane 1 for fixation, and the installation height Hc is 6.35 mm. Through precise control of the structural parameters, the introduced indirect coupling wave and the original coupling wave between adjacent units are made to have the same amplitude and opposite phase, achieving mutual coupling cancellation, while suppressing the scattering effect of the array edge and improving the directional... Figure 1 To the point of being responsive.

[0039] like Figure 6 As shown, the edge unit heterogeneous structure 41 consists of a radiator dielectric substrate larger than the central unit and three-segment metal strips. The specific structural parameters are as follows: L1a is 5.41 mm, L1b is 12.82 mm, and W1a is 0.5 mm. By adjusting the shape of the three-segment metal strips, distortion correction of the edge unit radiation pattern is achieved. The edge parasitic metal strip heterogeneous structure 42 has the same structure as the parasitic resonant structure 3, except that the mounting height Hc is increased to 8 mm. By increasing the mounting height of the edge parasitic metal strip, a better consistency improvement effect is achieved, while avoiding the impact on the radiation performance of the array's internal units.

[0040] Figure 7 , Figure 8 The curves showing the amplitude consistency of the array elements before and after applying the parasitic resonance decoupling structure, obtained after processing and testing the base station antenna of this embodiment, show that: after applying the parasitic resonance decoupling structure, the mean amplitude 3σ of the center 16 elements of the array decreased from 2.28dB to 1.7dB, an increase of 0.58dB; the mean phase 3σ decreased from 21.05° to 16.77°, an increase of 4.28°; and the direction... Figure 1 Consistency was significantly improved.

[0041] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above descriptions are merely specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of the present invention.

Claims

1. A base station antenna with high element pattern consistency based on parasitic resonance decoupling and edge heterogeneity, characterized in that, It includes a metal ground plane (1), at least two dual-polarized antenna elements (2), a parasitic resonance decoupling structure (3), and an edge heterogeneous structure (4); The dual-polarized antenna unit (2) is fixedly installed on the metal floor (1), and multiple dual-polarized antenna units (2) are arranged in a periodic array on the metal floor (1) to form an antenna array including a central array element region and an edge array element region; The parasitic resonance decoupling structure (3) is disposed between two adjacent dual-polarized antenna elements (2). The parasitic resonance decoupling structure (3) includes a dielectric substrate (31) and a C-shaped metal strip (32) printed on the dielectric substrate. The C-shaped metal strip is used to introduce an indirect coupling path with equal amplitude and opposite phase to the original coupling path between adjacent dual-polarized antenna elements (2) to cancel the mutual coupling effect between elements, suppress the scattering effect of array edge truncation, and improve the consistency of the radiation pattern of array elements. The edge heterogeneous structure (4) includes an edge element heterogeneous structure (41) and an edge parasitic metal strip heterogeneous structure (42); the edge element heterogeneous structure is disposed on the dual-polarized antenna element (2) in the edge array element region and is used to correct the pattern distortion caused by the array edge truncation effect of the edge array element. The parasitic metal strip heterostructure (42) is located on the parasitic resonance decoupling structure (3) on the outermost layer of the antenna array, and is used to improve the consistency of the radiation pattern of the entire array of units while controlling the influence on the radiation performance of the surrounding units.

2. A high-element pattern consistency base station antenna based on parasitic resonance decoupling and edge heterogeneity according to claim 1, characterized in that, The dual-polarized antenna unit (2) is a miniaturized quadruple folded dipole antenna unit, including a radiator (21), a feed balun assembly (22), and a coaxial connector (23); The radiator is printed on the first dielectric substrate and includes four folded dipoles (211), four pairs of coplanar strip lines (212), and eight drooping bent arms (213). The feeding balun assembly (22) includes two sets of orthogonally arranged balun substrates, which respectively feed radiators in two orthogonally polarized directions; The coaxial connector (23) is embedded on the back of the metal floor (1), with its inner core extending out of the upper surface of the metal floor (1) and electrically connected to the power supply balun assembly.

3. A high-element pattern consistency base station antenna based on parasitic resonance decoupling and edge heterogeneity according to claim 1, characterized in that, The edge element heterogeneous structure (41) is a three-segment metal strip loaded on the edge of the radiator edge of the dual-polarized antenna element (2) in the edge array region; the three-segment metal strip is printed on the dielectric substrate in the same plane as the radiator, and its direction is determined according to the edge direction of the edge element in the array, which is used to compensate for the aperture field amplitude and phase distortion caused by the edge truncation effect of the edge array element and to correct the radiation pattern distortion of the edge element.

4. A high-element pattern consistency base station antenna based on parasitic resonance decoupling and edge heterogeneity according to claim 1, characterized in that, The metal floor (1) is provided with positioning slots that match the substrate of the power supply balun assembly (22), the substrate of the drooping bent arm (213), and the substrate of the parasitic resonance decoupling structure (3). The bottoms of the substrate of the power supply balun assembly (22), the substrate of the drooping bent arm (213), and the substrate of the parasitic resonance decoupling structure (3) are all inserted into the positioning slots for fixation.

5. A high-element pattern consistency base station antenna based on parasitic resonance decoupling and edge heterogeneity according to claim 1, characterized in that, Enlarged-size welding pads are provided at the connection between the drooping bent arm (213) and the folded dipole (211), and at the connection between the substrate of the power feeding balun assembly (22) and the radiator (21) to reduce the difficulty of welding processing.

6. A high-element pattern consistency base station antenna based on parasitic resonance decoupling and edge heterogeneity according to claim 1, characterized in that, The balun substrate of the feed balun component (22) adopts a multi-segment microstrip line structure. By adjusting the linewidth of the microstrip line, the impedance matching performance of the antenna element is optimized, so that the antenna element has good return loss and port isolation in the target operating frequency band.

7. A high-element pattern consistency base station antenna based on parasitic resonance decoupling and edge heterogeneity according to claim 1, characterized in that, The bottom of the parasitic resonance decoupling structure (3) is provided with a downwardly extending plug-in part, which is inserted into the positioning slot of the metal floor (1) to realize the fixation and conformal of the parasitic resonance decoupling structure (3).

8. A high-element pattern consistency base station antenna based on parasitic resonance decoupling and edge heterogeneity according to claim 1, characterized in that, The edge parasitic metal strip heterogeneous structure (42) is: the C-shaped metal strip (32) of the outermost parasitic resonance decoupling structure (3) of the antenna array, whose vertical height is higher than that of the C-shaped metal strip (32) between adjacent units in the central array element region; by only increasing the height of the outermost C-shaped metal strip (32) of the array, the influence on the radiation performance of the internal array elements is reduced, while further suppressing the array edge truncation effect and improving the pattern consistency of the entire array element.

9. A high-element pattern consistency base station antenna based on parasitic resonance decoupling and edge heterogeneity according to claim 1, characterized in that, Multiple dual-polarized antenna elements (2) are arranged in a rectangular array of H×V on a metal ground plane (1), where H is the number of horizontal array elements and V is the number of vertical array elements. The spacing between the horizontal and vertical elements is set according to the free space wavelength corresponding to the working frequency of the antenna center.

10. A high-element pattern consistency base station antenna based on parasitic resonance decoupling and edge heterogeneity according to claim 1, characterized in that, The metal floor (1) is made of conductive metal and has threaded mounting holes that match the coaxial connector (23). The coaxial connector (23) is fixed to the metal floor (1) through the threaded mounting holes.

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