Multi-frequency multi-system fused multi-port base station antenna

Abstract

The invention relates to the technical field of wireless communication, in particular to a multi-frequency multi-system fusion multi-port base station antenna which comprises a bottom plate, a low-frequency antenna array, two high-frequency antenna arrays and an ultrahigh-frequency antenna array are arranged on the bottom plate, the bottom plate comprises a left bottom plate and a right bottom plate, the two high-frequency antenna arrays are arranged on the left bottom plate, and the ultrahigh-frequency antenna array is arranged on the right bottom plate. One ultrahigh-frequency antenna array is arranged on the right bottom plate, one low-frequency antenna array is arranged between the two high-frequency antenna arrays and one ultrahigh-frequency array in a penetrating mode, the low-frequency oscillators are arranged on the two sides of the bottom plate in two rows, the two high-frequency antenna arrays are the first high-frequency antenna array and the second high-frequency antenna array respectively, and the two high-frequency antenna arrays are the first high-frequency antenna array and the second high-frequency antenna array respectively. The plurality of first high-frequency oscillators are divided into two rows and are adjacently arranged in the middle of the left bottom plate, and the plurality of second high-frequency oscillators are divided into two rows and are arranged on the two side edges of the left bottom plate. According to the base station antenna, more broadband frequency bands are fused, and the problems that a traditional base station antenna is small in frequency spectrum coverage range and low in communication capacity are solved.

Description

Technical Field

[0001] The present invention relates to the field of wireless communication technology, and in particular to a multi-frequency, multi-standard, fused multi-port base station antenna. Background Art

[0002] With the rapid development of mobile communication technology, from 2G to 5G and even the future 6G, traditional single-band, single-standard antennas can no longer meet the needs of modern communication networks for capacity, coverage and flexibility. Therefore, multi-frequency, multi-standard, fusion and multi-port base station antennas came into being.

[0003] This new antenna technology achieves seamless compatibility and efficient support for different communication networks by integrating support for multiple frequency bands and multiple communication standards. At the same time, the multi-port design enables the antenna to process multiple signal channels simultaneously, further improving the capacity and coverage of the communication network. In addition, the multi-frequency, multi-standard, fused multi-port base station antenna also has excellent flexibility and scalability, and can easily cope with new technologies and communication needs that may emerge in the future.

[0004] In practical applications, multi-frequency, multi-standard, and multi-port base station antenna technology has shown great potential and value. It can not only significantly improve the performance of communication networks and user experience, but also reduce the cost of network construction and operation and maintenance, and promote the popularization and development of wireless communication technology. Therefore, this technology has become a hot topic in the current wireless communication field and a direction for future development. Summary of the invention

[0005] In order to solve the problems of poor fusion, small coverage and low communication capacity of existing base station antennas, the present invention provides a multi-frequency, multi-standard, fused multi-port base station antenna, which not only realizes the fusion of more broadband frequency bands while pursuing miniaturization, greatly improving the spectrum range of the antenna, but also is fully compatible with both TDD-LTE and FDD-LTE communication modes, and can flexibly respond to diverse business needs and application scenarios, providing more diverse antenna selection solutions for 5G base station construction.

[0006] The present invention provides a multi-frequency, multi-standard, integrated multi-port base station antenna, comprising a bottom plate, wherein a low-frequency antenna array, two high-frequency antenna arrays and an ultra-high frequency antenna array are arranged on the bottom plate, the bottom plate comprises a left bottom plate and a right bottom plate, the two high-frequency antenna arrays are arranged on the left bottom plate, an ultra-high frequency antenna array is arranged on the right bottom plate, and a low-frequency antenna array is interspersed between the two high-frequency antenna arrays and the ultra-high frequency array, the low-frequency antenna array comprises a plurality of low-frequency vibrators, the plurality of low-frequency vibrators are arranged in two columns on both sides of the bottom plate, and are non-linearly distributed on the left bottom plate and the right bottom plate, the two high-frequency antenna arrays are respectively a first high-frequency antenna array and a second high-frequency antenna array, the first high-frequency antenna array comprises a plurality of first high-frequency vibrators, the plurality of first high-frequency vibrators are arranged in two columns adjacent to each other in the middle of the left bottom plate, the second high-frequency antenna array comprises a plurality of second high-frequency vibrators, the plurality of second high-frequency vibrators are arranged in two columns on both sides of the left bottom plate, and the ultra-high frequency antenna array comprises a plurality of ultra-high frequency vibrators, the plurality of ultra-high frequency vibrators are arranged in eight columns on the right bottom plate, and the eight columns of ultra-high frequency vibrators are distributed side by side and in parallel on the right bottom plate. It integrates more broadband frequency bands to solve the problems of small spectrum coverage and low communication capacity of traditional base station antennas.

[0007] Furthermore, the left bottom plate and the right bottom plate are coplanar and can be integrally formed or detachably connected. Reflection plates are provided on both sides of the left bottom plate and the right bottom plate. The height of the reflection plates on both sides of the left bottom plate is h1, and the height of the reflection plates on both sides of the right bottom plate is h2, where h1 is greater than h2. Reflection plates of different heights are selected according to different operating frequency bands of the vibrator.

[0008] Furthermore, the two columns of first high-frequency oscillators of the first high-frequency antenna array are distributed on the two inner sides of the central axis of the bottom plate, and are symmetrically distributed on the left bottom plate along the central axis of the bottom plate, and the two columns of second high-frequency oscillators of the second high-frequency antenna array are distributed on the two outer sides of the left bottom plate, and are symmetrically distributed on the left bottom plate along the central axis of the bottom plate. With this arrangement, the overall size of the antenna is more compact.

[0009] Furthermore, the low frequency vibrator, the first high frequency vibrator and the ultra-high frequency vibrator are all PCB vibrators, and the second high frequency vibrator is a die-cast vibrator. The combination of PCB vibrator and die-cast vibrator is conducive to significantly reducing the length of the antenna and realizing antenna miniaturization while ensuring antenna performance.

[0010] Furthermore, the spacing between adjacent first high-frequency vibrators in the same array is equal, which is d1; the spacing between adjacent second high-frequency vibrators in the same array is equal, which is d2; the spacing between adjacent ultra-high-frequency vibrators in the same array is equal, which is d3; the low-frequency vibrators on the left and right bottom plates are arranged at equal intervals, and the spacing is d4; the spacing between the two columns of low-frequency vibrators set on the left bottom plate is d5, and the spacing between the two columns of low-frequency vibrators set on the right bottom plate is d6.

[0011] Furthermore, the operating frequency band of the low-frequency oscillator is 690~960MHz, and its center frequency corresponds to a wavelength of λ1. The operating frequency band of the first high-frequency oscillator is 1427MHz~2690MHz, and its center frequency corresponds to a wavelength of λ2. The operating frequency band of the second high-frequency oscillator is 1695~2200MHz and 2490~2690MHz, and its center frequency corresponds to a wavelength of λ3. The operating frequency band of the ultra-high frequency oscillator is 2300~3800MHz, and its center frequency corresponds to a wavelength of λ4.

[0012] Furthermore, the two rows of low-frequency oscillators are symmetrically distributed along the central axis of the bottom plate, and the spacing d6 between the two rows of low-frequency oscillators on the right bottom plate is smaller than the spacing d5 between the two rows of low-frequency oscillators on the left bottom plate, and the difference between d6 and d5 is 0.35~0.45λ1. Due to the offset of the low-frequency oscillators, the low-frequency horizontal beam width is converged.

[0013] Further, d1 is 0.6-0.8λ1, d2 is 0.7-0.9λ2, d3 is 0.85-0.95λ3, and d4 is 0.7-0.9λ4. Preferably, d1 is twice d2, and d2 is equal to d3.

[0014] Furthermore, each column of the first high-frequency antenna array, the second high-frequency antenna array, and the ultra-high-frequency antenna array has a radiation boundary, and the radiation boundary is an aluminum plate. According to the different operating frequency bands of the vibrators, radiation boundaries of different heights are selected to converge the horizontal beam widths of different frequency points and reduce interference in neighboring areas.

[0015] The beneficial effects of the present invention are: The present invention provides a multi-frequency, multi-standard, integrated multi-port base station antenna. By combining a low-frequency antenna array, a high-frequency antenna array, and an ultra-high-frequency antenna array, the antenna size is effectively reduced while realizing multi-band integration of LTE and expanding the antenna working bandwidth. The antenna is also made compatible with both FDD-LTE and TDD-LTE communication modes, has a high communication capacity, and can be applied to more usage scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the specific implementation of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are some implementations of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work. Figure 1 It is a front view schematic diagram of a base station antenna; Figure 2 is a side view schematic diagram of a base station antenna; Figure 3It is the main polarization pattern of the horizontal and vertical planes of the base station antenna in the 700MHz frequency band; Figure 4 It is the main polarization pattern of the horizontal and vertical planes of the base station antenna in the 900MHz frequency band; Figure 5 It is the main polarization pattern of the horizontal and vertical planes of the base station antenna in the 1800MHz frequency band; Figure 6 It is the main polarization pattern of the horizontal and vertical planes of the base station antenna in the F frequency band; Figure 7 It is the main polarization pattern of the horizontal and vertical planes of the base station antenna in frequency band A; Figure 8 It is the main polarization pattern of the horizontal and vertical planes of the base station antenna in the D-band; Fig. 9 It is the main polarization pattern of the horizontal and vertical planes of the base station antenna in the 3500MHz frequency band; In the figure, 1. bottom plate, 10. reflector, 11. left bottom plate, 12. right bottom plate, 2. low-frequency antenna array, 20. low-frequency vibrator, 3. first high-frequency antenna array, 30. first high-frequency vibrator, 4. second high-frequency antenna array, 40. second high-frequency vibrator, 5. ultra-high-frequency antenna array, 50. ultra-high-frequency vibrator, 6. radiation boundary. DETAILED DESCRIPTION

[0017] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0018] In order to ensure the miniaturization of the antenna and improve the coverage of the antenna spectrum, a multi-frequency, multi-standard, fusion multi-port base station antenna is designed. Figure 1 and 2As shown, it includes a bottom plate 1, on which a low-frequency antenna array 2, two high-frequency antenna arrays and an ultra-high frequency antenna array 5 are arranged, the bottom plate 1 includes a left bottom plate 11 and a right bottom plate 12, the two high-frequency antenna arrays are arranged on the left bottom plate 11, an ultra-high frequency antenna array 5 is arranged on the right bottom plate 12, and a low-frequency antenna array 2 is interspersed between the two high-frequency antenna arrays and the ultra-high frequency antenna array 5; the low-frequency antenna array 2 includes a plurality of low-frequency vibrators 20, and the plurality of low-frequency vibrators 20 are arranged on both sides of the bottom plate 1 in two columns, and are non-linearly distributed on the left bottom plate 11 and the right bottom plate 12; the two The high frequency antenna arrays are respectively a first high frequency antenna array 3 and a second high frequency antenna array 4. The first high frequency antenna array 3 includes a plurality of first high frequency vibrators 30, which are divided into two columns and adjacently arranged in the middle of the left bottom plate 11. The second high frequency antenna array 4 includes a plurality of second high frequency vibrators 40, which are divided into two columns and arranged on both sides of the left bottom plate 11. The ultra-high frequency antenna array 5 includes a plurality of ultra-high frequency vibrators 50, which are divided into eight columns and arranged on the right bottom plate 12. The eight columns of ultra-high frequency vibrators 50 are distributed parallel and side by side on the right bottom plate 12.

[0019] The left bottom plate 11 and the right bottom plate 12 are coplanar and can be integrally formed or detachably connected. Reflection plates 10 are provided on both sides of the left bottom plate 11 and the right bottom plate 12. The height of the reflection plates 10 on both sides of the left bottom plate 11 is h1, and the height of the reflection plates 10 on both sides of the right bottom plate 12 is h2, and h1 is greater than h2.

[0020] The two columns of first high-frequency oscillators 30 of the first high-frequency antenna array 3 are distributed on the two inner sides of the central axis of the bottom plate 1, and are symmetrically distributed on the left bottom plate 11 along the central axis of the bottom plate 1. The two columns of second high-frequency oscillators 40 of the second high-frequency antenna array 4 are distributed on the two outer sides of the left bottom plate 11, and are symmetrically distributed on the left bottom plate 11 along the central axis of the bottom plate 1. With this arrangement, the overall size of the antenna is more compact.

[0021] The low frequency vibrator 20, the first high frequency vibrator 30 and the ultra-high frequency vibrator 50 are all PCB vibrators, and the second high frequency vibrator 40 is a die-cast vibrator. The combination of PCB vibrators and die-cast vibrators is conducive to significantly reducing the antenna length, windward surface size, antenna weight, etc. while ensuring the antenna performance.

[0022] The spacing between adjacent first high-frequency vibrators 30 in the same array is equal, which is d1. The spacing between adjacent second high-frequency vibrators 40 in the same array is equal, which is d2. The spacing between adjacent ultra-high-frequency vibrators 50 in the same array is equal, which is d3. The low-frequency vibrators 20 on the left bottom plate 11 and the right bottom plate 12 are arranged at equal intervals, and the spacing is d4. The spacing between the two columns of low-frequency vibrators 20 arranged on the left bottom plate 11 is d5, and the spacing between the two columns of low-frequency vibrators 20 arranged on the right bottom plate 12 is d6.

[0023] The working frequency band of the low-frequency oscillator 20 is 690~960MHz, and its center frequency corresponds to a wavelength of λ1. The working frequency band of the first high-frequency oscillator 30 is 1427MHz~2690MHz, and its center frequency corresponds to a wavelength of λ2. The working frequency band of the second high-frequency oscillator 40 is 1695~2200MHz and 2490~2690MHz. The frequency division is performed through a combiner, that is, covering the F, A, and D frequency bands, and acting on the FDD-LTE communication mode of the base station antenna. The center frequency of the fusion frequency band corresponds to a wavelength of λ3. The working frequency band of the ultra-high frequency oscillator 50 is 2300~3800MHz, and acting on the TDD-LTE communication mode of the base station antenna. The center frequency corresponds to a wavelength of λ4. By selecting oscillator radiation units working in different frequency bands, the purpose of multi-frequency and multi-standard fusion of base station antennas can be achieved.

[0024] The two rows of low-frequency oscillators 20 are symmetrically distributed along the central axis of the bottom plate 1, and the spacing d6 between the two rows of low-frequency oscillators 20 on the right bottom plate 12 is smaller than the spacing d5 between the two rows of low-frequency oscillators 20 on the left bottom plate 11, and the difference between d6 and d5 is 0.35~0.45λ1. The offset of the low-frequency oscillator 20 is not only to avoid interference with the ultra-high frequency oscillator 50, but also to converge the horizontal beam width of the low-frequency antenna array 2.

[0025] d1 is 0.6~0.8λ1, d2 is 0.7~0.9λ2, d3 is 0.85~0.95λ3, d4 is 0.7~0.9λ4. Preferably, d1 is twice of d2, and d2 is equal to d3.

[0026] Each column of the first high frequency antenna array 3, the second high frequency antenna array 4 and the ultra-high frequency antenna array 5 has a radiation boundary 6, and the radiation boundary 6 is an aluminum plate. According to the different working frequency bands of the vibrators, different heights of the radiation boundaries 6 are selected to converge the horizontal beam widths of different frequency points, improve the front-to-back ratio, reduce the interference of adjacent cells, and optimize the isolation parameters between ports.

[0027] The embodiment of the present invention provides a multi-frequency, multi-standard, fused multi-port base station antenna, which effectively reduces the size of the antenna by combining and arranging multiple antenna arrays, realizes multi-band fusion of LTE, expands the antenna working bandwidth, and obtains ideal horizontal plane radiation pattern indicators in each frequency band, such as Figure 3-9 The base station antenna is compatible with both FDD-LTE and TDD-LTE communication modes. The antenna can be applied to more usage scenarios, providing more diverse antenna selection options for 5G base station construction.

[0028] The above description is only illustrative rather than restrictive of the present invention. Those skilled in the art will understand that many modifications, changes or equivalents may be made without departing from the spirit and scope defined by the appended claims, but all will fall within the scope of protection of the present invention.

Claims

1. A multi-frequency, multi-standard, fused multi-port base station antenna, comprising a base plate (1), characterized in that: The bottom plate (1) is provided with a low-frequency antenna array (2), two high-frequency antenna arrays and an ultra-high-frequency antenna array (5). The bottom plate (1) comprises a left bottom plate (11) and a right bottom plate (12), two high-frequency antenna arrays are arranged on the left bottom plate (11), an ultra-high frequency antenna array (5) is arranged on the right bottom plate (12), and a low-frequency antenna array (2) is interspersed between the two high-frequency antenna arrays and the ultra-high frequency antenna array (5). The low-frequency antenna array (2) comprises a plurality of low-frequency oscillators (20), wherein the plurality of low-frequency oscillators (20) are arranged in two rows on both sides of the bottom plate (1) and are distributed in a non-linear manner on the left bottom plate (11) and the right bottom plate (12). The two high-frequency antenna arrays are respectively a first high-frequency antenna array (3) and a second high-frequency antenna array (4); the first high-frequency antenna array (3) comprises a plurality of first high-frequency oscillators (30); the plurality of first high-frequency oscillators (30) are arranged in two rows adjacent to each other in the middle of the left bottom plate (11); the second high-frequency antenna array (4) comprises a plurality of second high-frequency oscillators (40); the plurality of second high-frequency oscillators (40) are arranged in two rows on both sides of the left bottom plate (11); The ultra-high frequency antenna array (5) comprises a plurality of ultra-high frequency oscillators (50), the plurality of ultra-high frequency oscillators (50) being arranged in eight columns on the right bottom plate (12), and the eight columns of ultra-high frequency oscillators (50) being distributed side by side and in parallel on the right bottom plate (12).

2. The multi-frequency, multi-standard, fusion, multi-port base station antenna according to claim 1, characterized in that: The left bottom plate (11) and the right bottom plate (12) are coplanar and can be integrally formed or detachably connected. Reflection plates (10) are provided on both sides of the left bottom plate (11) and the right bottom plate (12). The height of the reflection plates (10) on both sides of the left bottom plate (11) is h1, and the height of the reflection plates (10) on both sides of the right bottom plate (12) is h2, and h1 is greater than h2.

3. The multi-frequency, multi-standard, fusion, multi-port base station antenna according to claim 1, characterized in that: The two columns of first high-frequency oscillators (30) of the first high-frequency antenna array (3) are distributed on two inner sides of the central axis of the bottom plate (1), and are symmetrically distributed on the left bottom plate (11) along the central axis of the bottom plate (1); the two columns of second high-frequency oscillators (40) of the second high-frequency antenna array (4) are distributed on two outer sides of the left bottom plate (11), and are symmetrically distributed on the left bottom plate (11) along the central axis of the bottom plate (1).

4. The multi-frequency, multi-standard, fusion, multi-port base station antenna according to claim 1, characterized in that: The low-frequency vibrator (20), the first high-frequency vibrator (30) and the ultra-high-frequency vibrator (50) are all PCB vibrators, and the second high-frequency vibrator (40) is a die-cast vibrator.

5. The multi-frequency, multi-standard, fusion, multi-port base station antenna according to claim 1, characterized in that: The spacing between adjacent first high-frequency vibrators (30) in the same array is equal, which is d1; the spacing between adjacent second high-frequency vibrators (40) in the same array is equal, which is d2; the spacing between adjacent ultra-high-frequency vibrators (50) in the same array is equal, which is d3; the low-frequency vibrators (20) on the left bottom plate (11) and the right bottom plate (12) are arranged at equal intervals, and the spacing is d4; the spacing between two columns of low-frequency vibrators (20) arranged on the left bottom plate (11) is d5; and the spacing between two columns of low-frequency vibrators (20) arranged on the right bottom plate (12) is d6.

6. The multi-frequency, multi-standard, fusion, multi-port base station antenna according to claim 5, characterized in that: The working frequency band of the low-frequency oscillator (20) is 690-960 MHz, and the center frequency thereof corresponds to a wavelength of λ1; the working frequency band of the first high-frequency oscillator (30) is 1427 MHz-2690 MHz, and the center frequency thereof corresponds to a wavelength of λ2; the working frequency band of the second high-frequency oscillator (40) is 1695-2200 MHz and 2490-2690 MHz, and the center frequency thereof corresponds to a wavelength of λ3; the working frequency band of the ultra-high frequency oscillator (50) is 2300-3800 MHz, and the center frequency thereof corresponds to a wavelength of λ4.

7. The multi-frequency, multi-standard, fusion, multi-port base station antenna according to claim 6, characterized in that: The two rows of low-frequency vibrators (20) are symmetrically distributed along the central axis of the bottom plate (1), and the spacing d6 between the two rows of low-frequency vibrators (20) on the right bottom plate (12) is smaller than the spacing d5 between the two rows of low-frequency vibrators (20) on the left bottom plate (11), and the difference between d6 and d5 is 0.35-0.45λ1.

8. The multi-frequency, multi-standard, fused multi-port base station antenna according to claim 7, characterized in that: The d1 is 0.6~0.8λ1, the d2 is 0.7~0.9λ2; the d3 is 0.85~0.95λ3, and the d4 is 0.7~0.9λ4.

9. The multi-frequency, multi-standard, fused multi-port base station antenna according to claim 8, characterized in that: The d1 is twice as large as d2, and d2 is equal to d3.

10. The multi-frequency, multi-standard, fusion, multi-port base station antenna according to claim 1, characterized in that: Each column of the oscillators of the first high-frequency antenna array (3), the second high-frequency antenna array (4) and the ultra-high-frequency antenna array (5) has a radiation boundary (6), and the radiation boundary (6) is an aluminum plate.

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