Multi-frequency antenna array

Abstract

The application belongs to the technical field of antennas and provides a multi-frequency antenna array which comprises at least two columns of low-frequency arrays and multiple columns of high-frequency arrays arranged from left to right; the high-frequency array comprises high-frequency dipoles arranged from top to bottom; the low-frequency array comprises low-frequency dipoles arranged from top to bottom, and the low-frequency dipoles are embedded between the two columns of high-frequency arrays; and a filter circuit is arranged on the radiation surface of the low-frequency dipoles. Thus, the application ensures the overall performance of the antenna array on the basis of reducing the overall size of the antenna array.

Description

Technical Field

[0001] The present invention relates to the field of antenna technology, and in particular to a multi-frequency antenna array. Background Art

[0002] 5G networks provide real-time, seamless connectivity for IoT (Internet of Things) and M2M (Machine-to-Machine) communications, making the intelligent interconnection of all things possible. However, the investment in 5G equipment presents multiple challenges for operators and equipment manufacturers, with operating costs and base station architecture being the primary challenges currently faced by manufacturers. Furthermore, in many specialized environments, 5G equipment cannot yet replace existing LTE networks. Therefore, the industry generally believes that 5G equipment and LTE networks will coexist for a long time. This is why the FDD+TDD base station array topology has emerged.

[0003] With the rapid development of mobile communication antenna technology, the proportion of multi-frequency and multi-channel antennas is becoming larger and larger. And based on meeting the user's psychology, construction and installation convenience and reliability and other factors, reducing the size and wind area has become an inevitable trend in the development of the antenna industry. In the realization scheme of multi-frequency and multi-channel antennas with compact layout, the full nesting scheme focuses on using more dipoles in the horizontal dimension to realize the electrical performance, but the technical realization is difficult, the influence between frequency bands is large, and the performance of the antenna is affected. In reality, in the case of small spacing and multi-array assembly, when the low frequency and high frequency are integrally nested and assembled, the mutual coupling influence between them is very large, especially when the array needs to be miniaturized. Because the height of the low frequency is often higher than that of the high frequency, when the high frequency works, part of the electric field will hit the low frequency to form scattering, on the one hand, causing the antenna beam distortion and gain reduction, on the other hand, causing the antenna VSWR (Voltage Standing Wave Ratio) to be poor. Therefore, many researches have been done at home and abroad, which can be divided into three categories: the first category is to load periodic or non-periodic filter circuit on the array element radiation surface or balun and matching circuit to filter out the cross-band interference of other array elements; the second category is to make periodic or non-periodic circuit boundary on the ground plane below or near the array element to absorb part of the electric wave radiated by the array element; the third category is to give the beam of the array by a special topology, so that the total electric field vector pattern of the array composed of the array elements is "0" type, and the gain is adjusted by controlling the beam width. In addition, there are special ways such as using metamaterials, metasurfaces, and acoustic surfaces to solve the cross-band interference problem. For the third category of research, when the array elements are densely distributed, no matter what topology is used, the interference between the array elements will cause the directional pattern of the array antenna to be distorted in various ways, so combining the above research results may become a major direction in the future. However, using the above research results in the array at the same time is easy to cause the cost of the base station to be too high, the component assembly to be complex, and not suitable for mass production. Therefore, for equipment manufacturers, how to design the filter circuit, what kind of frequency selective surface, and how to design the topology, and how to combine them to reduce the cost and simplify the assembly, has become the top priority in research and production.

[0004] In summary, the prior art has obvious inconvenience and defects in actual use, so it is necessary to improve. SUMMARY

[0005] In view of the above defects, the purpose of the present application is to provide a multi-frequency antenna array which not only reduces the overall size of the antenna, but also optimizes the performance of the antenna.

[0006] In order to achieve the above purpose, the present application provides a multi-frequency antenna array, comprising at least two columns of low-frequency arrays and multiple columns of high-frequency arrays arranged from left to right.

[0007] The high-frequency array includes high-frequency vibrators arranged in sequence from top to bottom;

[0008] The low-frequency array includes low-frequency vibrators arranged in sequence from top to bottom, and the low-frequency vibrators are embedded between two columns of the high-frequency arrays;

[0009] A filter circuit is provided on the radiation surface of the low-frequency oscillator.

[0010] According to the multi-frequency antenna array, a director is provided below the low-frequency oscillator and directly above the high-frequency oscillator.

[0011] According to the multi-frequency antenna array, the topmost or bottommost first low-frequency oscillator in the low-frequency array is offset to the left or right relative to the other low-frequency oscillators in the low-frequency array, forming a horizontal misalignment with the other low-frequency oscillators;

[0012] Furthermore, the first low-frequency oscillator and the second low-frequency oscillator adjacent thereto in the low-frequency array are fed using a preset slope power division.

[0013] According to the multi-frequency antenna array, the high-frequency array is provided with six columns, which are the 1st to 6th columns of high-frequency arrays from left to right;

[0014] The low-frequency array is provided with two columns, and the low-frequency oscillators of one column of the low-frequency array are embedded between the first column of the high-frequency array and the second column of the high-frequency array, and the first low-frequency oscillator at the top or bottom of the low-frequency array is offset to the right to be between the second column of the high-frequency array and the third column of the high-frequency array;

[0015] The low-frequency oscillators of another column of the low-frequency array are embedded between the fifth column of the high-frequency array and the sixth column of the high-frequency array, and the first low-frequency oscillator at the top or bottom of the low-frequency array is shifted to the left to between the fourth column of the high-frequency array and the fifth column of the high-frequency array;

[0016] If the top first low frequency vibrator in one column of the low frequency array is shifted to the left or right, the bottom first low frequency vibrator in another column of the low frequency array is shifted to the left or right.

[0017] According to the multi-frequency antenna array, the high-frequency array includes a first high-frequency array and a second high-frequency array, wherein the first high-frequency array is provided with two columns, and the second high-frequency array is provided with four columns, and the two columns of the first high-frequency array are respectively arranged on the left and right outer sides of the four columns of the second high-frequency array;

[0018] The two columns of the low-frequency arrays form an eight-channel low-frequency antenna;

[0019] Two columns of the first high-frequency arrays form a four-channel FDD high-frequency antenna;

[0020] Four columns of the second high-frequency arrays form an eight-channel TDD smart antenna.

[0021] According to the multi-frequency antenna array, the high-frequency oscillators of two adjacent columns of the second high-frequency array are staggered;

[0022] The high-frequency oscillators of the two columns of the first high-frequency array are respectively aligned with the high-frequency oscillators of the adjacent second high-frequency array.

[0023] According to the multi-frequency antenna array, first radiation boundaries are provided on the left and right outer sides of the two columns of the first high-frequency arrays, and the low-frequency array and the first high-frequency array share the first radiation boundary;

[0024] A second radiation boundary is provided between the second high-frequency array and the first high-frequency array, and a corresponding gap is provided on the second radiation boundary corresponding to the position where the low-frequency vibrator is provided.

[0025] According to the multi-frequency antenna array, the operating frequency band of the eight-channel low-frequency antenna is: 690MHz-960MHz; the operating frequency band of the four-channel FDD high-frequency antenna is: 1427-2690MHz; the operating frequency band of the eight-channel TDD smart antenna is: 1885MHz-2675MHz or 2300-3800MHz.

[0026] According to the multi-frequency antenna array, the first low-frequency oscillator and the second low-frequency oscillator are fed using a one-to-two slope power division.

[0027] According to the multi-frequency antenna array, the low-frequency oscillator provided with the filtering circuit is a PCB filtering oscillator in the shape of a field;

[0028] The high-frequency vibrator is a die-cast vibrator.

[0029] The embodiments of the present invention adopt the nested placement of antennas of different frequency bands, that is, the low-frequency oscillator is embedded between the two columns of the high-frequency array in a "flower arrangement" fully nested layout, thereby reducing the overall size of the antenna array. At the same time, in order to reduce the mutual coupling between high and low frequencies and reduce the scattering of the electric field generated by the high-frequency oscillator on the low-frequency oscillator, which leads to the distortion of the antenna beam, gain reduction, standing wave and isolation deterioration, a periodic or non-periodic filtering circuit is installed on the radiation surface and matching circuit of the low-frequency oscillator, thereby filtering out the cross-band interference caused by other array elements. In this way, the present invention achieves the goal of ensuring the overall performance of the antenna array while reducing the overall size of the antenna array. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is a front view of a multi-frequency antenna array according to an embodiment of the present invention;

[0031] Figure 2 is a left side view of a multi-frequency antenna array according to an embodiment of the present invention;

[0032] Figure 3 FIG. 4 is a left side cross-sectional view of a multi-frequency antenna array according to an embodiment of the present invention. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0034] It should be noted that references to "one embodiment," "an embodiment," "an example embodiment," etc., in this specification indicate that the described embodiment may include specific features, structures, or characteristics, but not every embodiment must include these specific features, structures, or characteristics. Furthermore, such references do not necessarily refer to the same embodiment. Furthermore, when specific features, structures, or characteristics are described in conjunction with an embodiment, whether or not explicitly described, it is understood that incorporating such features, structures, or characteristics into other embodiments is within the knowledge of those skilled in the art.

[0035] In addition, certain words are used in the specification and subsequent claims to refer to specific components or parts. It should be understood by those with ordinary knowledge in the relevant field that manufacturers may use different nouns or terms to refer to the same component or part. This specification and subsequent claims do not use differences in names as a way to distinguish components or parts, but rather use differences in the functions of components or parts as the criteria for distinction. The words "including" and "comprising" mentioned throughout the specification and subsequent claims are open-ended terms and should be interpreted as "including but not limited to". In addition, the word "connect" here includes any direct and indirect electrical connection means. Indirect electrical connection means include connection through other devices.

[0036] In addition, the same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "front", "back", etc. indicating directions or positional relationships, they are based on the directions or positional relationships shown in the drawings. This is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting the present invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0037] See also Figures 1 to 3 , shows a multi-frequency antenna array 100 according to a first embodiment of the present invention, the multi-frequency antenna array 100 includes at least two columns of low-frequency arrays 10 and multiple columns of high-frequency arrays arranged sequentially from left to right;

[0038] The high-frequency array includes high-frequency vibrators 23 arranged in sequence from top to bottom;

[0039] The low-frequency array 10 includes low-frequency oscillators 11 arranged sequentially from top to bottom, and the low-frequency oscillators 11 are embedded between two columns of high-frequency arrays;

[0040] A filter circuit is provided on the radiation surface of the low-frequency oscillator 11 .

[0041] In this embodiment, the multi-frequency antenna array 100 includes a low-frequency array 10 and a high-frequency array. To reduce the overall size of the multi-frequency antenna array 100, arrays of different frequency bands are nested, that is, a "flower arrangement" fully nested layout is adopted, with the low-frequency oscillator 11 embedded between two rows of high-frequency arrays. This compact layout avoids the addition of the low-frequency array 10 and increases the overall size of the multi-frequency antenna array 100, greatly saving layout space and providing great convenience for engineering construction and installation. Figure 1 After the low-frequency oscillator 11 is embedded, its projection overlaps with the projection of the area of ​​the two columns of high-frequency arrays. At the same time, since the radiation field of the high-frequency oscillator penetrates the low-frequency oscillator, an induced current will be generated on the low-frequency oscillator. The induced current generates parasitic radiation, and parasitic radiation often deteriorates the high-frequency pattern. In order to weaken the mutual coupling between high and low frequencies and reduce the beam distortion, gain reduction, standing wave and isolation deterioration of the antenna caused by scattering when the high-frequency electric field hits the low-frequency oscillator, a filtering circuit is added to the low-frequency oscillator 11 to curb the generation of high-frequency current, thereby suppressing parasitic radiation. Specifically, a periodic or non-periodic filtering circuit can be installed on the radiation surface and matching circuit of the low-frequency oscillator 11 to filter out cross-band interference caused by other array elements. Since the low-frequency band antenna does not generate strong parasitic radiation to the high-frequency band antenna through spatial filtering of different frequencies, the pattern is kept conformal, ensuring that the electrical performance of the antenna does not deteriorate when the array is fully nested or there is array shielding.

[0042] As an optional embodiment, a director 30 is provided below the low-frequency oscillator 11 and directly above the high-frequency oscillator 23. Specifically, directors 30 of varying diameters can be used as needed, and are not limited to square, circular, crisscross, or diamond shapes. The use of a director effectively maintains good standing wave, gain, and beamwidth performance while significantly reducing the size of the antenna array.

[0043] As an optional embodiment, the topmost or bottommost first low-frequency oscillator 111 in the low-frequency array 10 is offset to the left or right relative to the other low-frequency oscillators 11 in the low-frequency array 10 , forming a horizontal misalignment with the other low-frequency oscillators 11 ;

[0044] Furthermore, the first low-frequency oscillator 111 and the second low-frequency oscillator 112 adjacent thereto in the low-frequency array 10 are fed using a preset slope power division.

[0045] In this embodiment, to improve the overall performance of the multi-frequency antenna array 100, reduce the mutual influence between arrays in different frequency bands, and ensure the achievement of good beamwidth indicators, a local irregular array is adopted in the low-frequency array 10. The first low-frequency oscillator 111 at the top or bottom of the low-frequency array 10 is offset to the left or right relative to the other low-frequency oscillators 11 in the low-frequency array 10, forming a horizontal offset with the other low-frequency oscillators 11. Compared with conventional array layouts, the staggered design between the low-frequency oscillators 11 in the low-frequency array 10 achieves a better beamforming effect and increases the gain of the antenna formed by the low-frequency array 10. In addition, the first low-frequency oscillator 111 and the second low-frequency oscillator 112 adjacent to it in the low-frequency array 10 are fed using a preset slope power splitting. Optionally, the first low-frequency oscillator 111 and the second low-frequency oscillator 112 are fed using a one-to-two slope power splitting. Optionally, the spacing between the first low-frequency oscillator 111 and the second low-frequency oscillator 112 can be set to be different from the spacing between the second low-frequency oscillator 112 and another adjacent low-frequency oscillator 11, which can further improve the beam width and gain of the low-frequency array 10. Thus, while taking into account the structural layout of the low-frequency array 10 and the high-frequency array, in order to improve the beam width and gain of the low-frequency array 10 and achieve a good directivity pattern and S parameters, the low-frequency array 10 not only adopts a local irregular array, but also combines different feeding methods between the low-frequency oscillators 11.

[0046] As an optional embodiment, the high frequency array is provided with six columns, which are the 1st to 6th columns of high frequency arrays from left to right;

[0047] The low-frequency array 10 is provided in two columns, and the low-frequency oscillators 11 of one column of the low-frequency array 10 are embedded between the first column of the high-frequency array and the second column of the high-frequency array. Then, the first low-frequency oscillator 111 at the top or bottom of the low-frequency array 10 is offset to the right to be between the second column of the high-frequency array and the third column of the high-frequency array.

[0048] The low-frequency oscillators 11 of another low-frequency array 10 are embedded between the fifth and sixth high-frequency arrays, and the uppermost or lowermost first low-frequency oscillator 111 in the low-frequency array 10 is shifted to the left to between the fourth and fifth high-frequency arrays.

[0049] If the top first low frequency vibrator 111 in one column of the low frequency array 10 shifts leftward or rightward, the bottom first low frequency vibrator 111 in another column of the low frequency array 10 shifts leftward or rightward.

[0050] In this embodiment, see Figure 1 In the two rows of low-frequency arrays 10, the top first low-frequency oscillator 111 of the left low-frequency array 10 is shifted to the right, and the bottom first low-frequency oscillator 111 of the right low-frequency array 10 is shifted to the left, thereby further improving the beamwidth and gain of the low-frequency array 10. Of course, the above method can also be used to assemble multiple arrays of multi-frequency antennas.

[0051] As an optional embodiment, the high-frequency array includes a first high-frequency array 21 and a second high-frequency array 22, wherein the first high-frequency array 21 is provided with two columns, and the second high-frequency array 22 is provided with four columns, and the two columns of the first high-frequency array 21 are respectively arranged on the left and right outer sides of the four columns of the second high-frequency array 22;

[0052] Two columns of low-frequency arrays 10 form an eight-channel low-frequency antenna;

[0053] The two columns of the first high-frequency array 21 form a four-channel FDD (Frequency Division Duplexing) high-frequency antenna;

[0054] The four columns of the second high-frequency array 22 form an eight-channel TDD (Time Division Duplexing) smart antenna.

[0055] In this embodiment, see Figure 1 , the first column of high-frequency arrays and the sixth column of high-frequency arrays are the first high-frequency array 21. The second to fifth columns of high-frequency arrays are the second high-frequency array 22. The two columns of low-frequency arrays 10 can adopt unit multiplexing technology to achieve frequency division through a combiner, expanding the four-channel to an eight-channel low-frequency antenna. Optionally, the high-frequency arrays all use die-cast vibrators to form a six-column array (12 channels), namely two columns of FDD high-frequency arrays (first high-frequency array) (4 channels) and four columns of TDD smart antenna arrays (second high-frequency array 22) (8 channels). The two columns of FDD high-frequency arrays are respectively distributed on the outside of the two side columns of the TDD smart antenna array. Optionally, the operating frequency band of the eight-channel low-frequency antenna is: 690MHz-960MHz band (Mega Hertz); the operating frequency band of the four-channel FDD high-frequency antenna is: 1427-2690MHz band; the operating frequency band of the eight-channel TDD smart antenna is: 1885MHz-2675MHz or 2300-3800MHz band, thereby the multi-frequency antenna array 100 realizes multi-standard and multi-band functions.

[0056] As an optional embodiment, the high-frequency dipoles 23 of the two adjacent second high-frequency arrays 22 are staggered arranged;

[0057] The high-frequency dipoles 23 of the two first high-frequency arrays 21 are respectively aligned with the high-frequency dipoles 23 of the adjacent second high-frequency arrays 22.

[0058] In this embodiment, referring to Figure 1 , the high-frequency dipoles 23 of the first column of high-frequency arrays (i.e. the high-frequency dipoles 23 of the first high-frequency arrays 21) are aligned with the high-frequency dipoles 23 of the second column of high-frequency arrays (i.e. the high-frequency dipoles 23 of the second high-frequency arrays 22), and similarly, the high-frequency dipoles 23 of the sixth column of high-frequency arrays (i.e. the high-frequency dipoles 23 of the first high-frequency arrays 21) are aligned with the high-frequency dipoles 23 of the fifth column of high-frequency arrays (i.e. the high-frequency dipoles 23 of the second high-frequency arrays 22). In the second to fifth columns of high-frequency arrays (i.e. the four second high-frequency arrays 22), the high-frequency dipoles 23 of the two adjacent columns are staggered arranged. Since the layout of each array is compact and the spacing is small, in order to reduce the mutual coupling effect between each column of high-frequency arrays and achieve good directional pattern and S parameter performance, the high-frequency dipoles 23 of the six columns of high-frequency arrays are staggered arranged in combination with the layout of the low-frequency dipoles 11 of the two columns of low-frequency arrays 10, which can better achieve the beam width, front-to-back ratio, cross-polarization and S parameter of the antenna and other indicators.

[0059] As an optional embodiment, the left and right outer sides of the two first high-frequency arrays 21 are provided with first radiation boundaries 50, and the low-frequency arrays 10 and the first high-frequency arrays 21 share the first radiation boundaries 50;

[0060] The second high-frequency arrays 22 and the first high-frequency arrays 21 are provided with second radiation boundaries 60, and the second radiation boundaries 60 are provided with corresponding notches corresponding to the positions of the low-frequency dipoles 11.

[0061] In this embodiment, the radiation boundaries can be shared between different arrays, or can be designed differently. Referring to Figure 2, shows a schematic structural diagram of the first radiation boundary 50. The first radiation boundary 50 is not limited to a wall shape, a rectangle, a window shape, a trapezoidal shape, etc., and is adjusted according to the performance of the antenna, such as the front-to-back ratio and the beam width. In addition to the boundary feature of the first radiation boundary 50, the two rows of the first high-frequency arrays 21 can also be provided with other radiation boundaries, for example, a radiation boundary is provided between the high-frequency oscillators 23 of the first high-frequency array 21, a radiation boundary is provided on the last high-frequency oscillator 23 of the first high-frequency array 21, and / or a second radiation boundary 60 is provided between the second high-frequency array 22 and the first high-frequency array 21, etc. The radiation boundary is not limited to rectangular, V-shaped, and U-shaped forms, and isolation devices or other devices not limited to window shapes or wall shapes can be attached thereto. The distance between the second radiation boundary 60 and the second high-frequency array 22 can be optimized to adjust and optimize indicators such as beam width and isolation. Among the four rows of second high-frequency arrays 22, a third radiation boundary can be provided between the two middle rows of second high-frequency arrays 22 and the second high-frequency arrays 22 on either side. This third radiation boundary is not limited to L-, V-, or U-shaped shapes, and may have local gaps depending on the position of the low-frequency oscillator 11. A fourth radiation boundary can be provided between the high-frequency oscillators 23 of the two middle rows of second high-frequency arrays 22. This fourth radiation boundary is not limited to L-, V-, or U-shaped shapes, and may have local gaps depending on the position of the low-frequency oscillator 11.

[0062] As an optional embodiment, the low-frequency oscillator 11 is a PCB filter oscillator in the shape of a field;

[0063] The high-frequency oscillator 23 is a die-cast oscillator.

[0064] In this embodiment, the low-frequency oscillator 11 adopts a PCB filter oscillator in the form of a field. The PCB filter oscillator is nested in multiple columns of high-frequency arrays, which can realize the filtering characteristics of the high-frequency array, avoid the distortion of the high-frequency directional pattern beam and the deterioration of the S parameter caused by the obstruction of the high-frequency oscillator 23 by the low-frequency oscillator 11, effectively reduce the mutual coupling between high and low frequencies, and achieve the conformal nature of the directional pattern and good S parameter performance.

[0065] In summary, the present invention provides a TDD+FDD multi-frequency, multi-array, and multi-standard antenna array technology. A multi-antenna coexistence design suitable for FDD+TDD antenna arrays is proposed. Under extremely small array spacing, and while ensuring that electrical performance indicators such as standing wave, gain, and cross-polarization ratio are not deteriorated, the filtering technology of the radiation unit is used to realize the full nested array of high and low frequencies of TDD+FDD multi-frequency and multi-array antennas. It includes at least two columns of low-frequency (LB) arrays and multiple columns of high-frequency (HB) arrays arranged from left to right; they are compactly combined using a special topology design, and then equipped with a corresponding power division network and phase shift circuit to control the transmit and receive frequency bands, and the array elements are organized into two columns, thus forming an FDD (Frequency Division Duplexing) base station antenna array that can be used as a 4G LTE network. By combining TDD frequency band antennas into an N×M massive MIMO (Multiple Input Multiple Output) array, equipping them with a special power division network and phase shift circuit, and connecting them using baseband and active circuits, the uplink and downlink frequencies are made the same, and the transmission and reception time is segmented, thus forming an antenna array that can be used as a TDD (Time Division Duplexing) base station.

[0066] Of course, the present invention may have many other embodiments. Without departing from the spirit and essence of the present invention, those skilled in the art may make various corresponding changes and modifications based on the present invention, but these corresponding changes and modifications should all fall within the scope of protection of the claims attached to the present invention.

Claims

1. A multi-frequency antenna array, characterized in that: It includes at least two columns of low-frequency arrays and multiple columns of high-frequency arrays arranged from left to right; The high-frequency array includes high-frequency vibrators arranged in sequence from top to bottom; The low-frequency array includes low-frequency vibrators arranged in sequence from top to bottom, and the low-frequency vibrators are embedded between two columns of the high-frequency arrays; A filter circuit is provided on the radiation surface of the low-frequency oscillator; The topmost or bottommost first low-frequency vibrator in the low-frequency array is offset to the left or right relative to the other low-frequency vibrators in the low-frequency array, forming a horizontal misalignment with the other low-frequency vibrators; The first low-frequency oscillator and the second low-frequency oscillator adjacent thereto in the low-frequency array are fed by power division with a preset slope; Setting the distance between the first low-frequency vibrator and the second low-frequency vibrator to be different from the distance between the second low-frequency vibrator and another adjacent low-frequency vibrator; The high frequency array is provided with six columns, which are the 1st to 6th columns of high frequency arrays from left to right; The low-frequency array is provided with two columns, and the low-frequency oscillators of one column of the low-frequency array are embedded between the first column of the high-frequency array and the second column of the high-frequency array, and the first low-frequency oscillator at the top or bottom of the low-frequency array is offset to the right to be between the second column of the high-frequency array and the third column of the high-frequency array; The low-frequency oscillators of another column of the low-frequency array are embedded between the fifth column of the high-frequency array and the sixth column of the high-frequency array, and the first low-frequency oscillator at the top or bottom of the low-frequency array is shifted to the left to between the fourth column of the high-frequency array and the fifth column of the high-frequency array; If the top first low-frequency vibrator in one column of the low-frequency array is shifted to the left or right, the bottom first low-frequency vibrator in another column of the low-frequency array is shifted to the left or right. The high-frequency array includes a first high-frequency array and a second high-frequency array, wherein the first high-frequency array is provided with two columns, and the second high-frequency array is provided with four columns, and the two columns of the first high-frequency array are respectively arranged on the left and right outer sides of the four columns of the second high-frequency array; The two columns of the low-frequency arrays form an eight-channel low-frequency antenna; Two columns of the first high-frequency arrays form a four-channel FDD high-frequency antenna; Four columns of the second high frequency array form an eight-channel TDD smart antenna; The high-frequency oscillators of two adjacent columns of the second high-frequency array are staggered; The high-frequency oscillators of the two columns of the first high-frequency array are respectively aligned with the high-frequency oscillators of the adjacent second high-frequency array.

2. The multi-frequency antenna array according to claim 1, wherein: A director is provided below the low-frequency vibrator and directly above the high-frequency vibrator.

3. The multi-frequency antenna array according to claim 1, wherein: First radiation boundaries are provided on left and right outer sides of the two columns of the first high-frequency arrays, and the low-frequency array and the first high-frequency array share the first radiation boundary; A second radiation boundary is provided between the second high-frequency array and the first high-frequency array, and a corresponding gap is provided on the second radiation boundary corresponding to the position where the low-frequency vibrator is provided.

4. The multi-frequency antenna array according to claim 1, wherein: The operating frequency band of the eight-channel low-frequency antenna is 690MHz-960MHz; the operating frequency band of the four-channel FDD high-frequency antenna is 1427-2690MHz; the operating frequency band of the eight-channel TDD smart antenna is 1885MHz-2675MHz or 2300-3800MHz.

5. The multi-frequency antenna array according to claim 1, wherein: The first low-frequency oscillator and the second low-frequency oscillator are fed by a one-to-two slope power division.

6. The multi-frequency antenna array according to claim 1, wherein: The low-frequency oscillator provided with the filter circuit is a PCB filter oscillator in the shape of a field; The high-frequency vibrator is a die-cast vibrator.

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