WO2022012021A1 - Antenne multifaisceau - Google Patents

Antenne multifaisceau Download PDF

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Publication number
WO2022012021A1
WO2022012021A1 PCT/CN2021/073889 CN2021073889W WO2022012021A1 WO 2022012021 A1 WO2022012021 A1 WO 2022012021A1 CN 2021073889 W CN2021073889 W CN 2021073889W WO 2022012021 A1 WO2022012021 A1 WO 2022012021A1
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WO
WIPO (PCT)
Prior art keywords
array
sub
arrays
antenna
seed
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2021/073889
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English (en)
Chinese (zh)
Inventor
刘晴宇
曾骏
李�浩
郭亚军
徐存伟
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mobi Antenna Technologies Shenzhen Co Ltd
Mobi Technology Xian Co Ltd
Mobi Antenna Technologies Jian Co Ltd
Mobi Technology Shenzhen Co Ltd
Shenzhen Shengyu Smart Network Technology Co Ltd
Xian Mobi Antenna Technology Engineering Co Ltd
Original Assignee
Mobi Antenna Technologies Shenzhen Co Ltd
Mobi Technology Xian Co Ltd
Mobi Antenna Technologies Jian Co Ltd
Mobi Technology Shenzhen Co Ltd
Shenzhen Shengyu Smart Network Technology Co Ltd
Xian Mobi Antenna Technology Engineering Co Ltd
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Filing date
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Application filed by Mobi Antenna Technologies Shenzhen Co Ltd, Mobi Technology Xian Co Ltd, Mobi Antenna Technologies Jian Co Ltd, Mobi Technology Shenzhen Co Ltd, Shenzhen Shengyu Smart Network Technology Co Ltd, Xian Mobi Antenna Technology Engineering Co Ltd filed Critical Mobi Antenna Technologies Shenzhen Co Ltd
Publication of WO2022012021A1 publication Critical patent/WO2022012021A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/29—Combinations of different interacting antenna units for giving a desired directional characteristic
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
    • H01Q1/521—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas
    • H01Q1/523—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas between antennas of an array
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
    • H01Q19/10—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
    • H01Q21/061—Two dimensional planar arrays

Definitions

  • the present invention relates to the technical field of mobile communication base station antennas, and in particular, to a multi-beam antenna.
  • Multi-beam antennas can improve network coverage and capacity without adding new spectrum and antenna. For example, dual-beam antennas can increase capacity by about 1.7 times, and triple-beam antennas can increase capacity by about 2.2 times. Therefore, multi-beam antennas are more and more popular in the market.
  • FIG. 1 shows a first embodiment of a conventional multi-beam antenna. All sub-arrays of the antenna are the same, evenly arrayed in the horizontal direction, and evenly arrayed in the vertical direction, and there is no dislocation in all directions.
  • the wave troughs coincide with the wave troughs.
  • the pattern corresponding to the sub-array composed of the radiation elements 2-5-1, 2-5-2, 2-5-3, and 2-5-4 is the same as that of the radiation elements 2-5-1.
  • the patterns corresponding to the sub-arrays composed of -6-1, 2-6-2, 2-6-3, and 2-6-4 are roughly the same.
  • the power ratio between the sub-array elements of the antenna is variable, and the phase difference is constant, but since the corresponding pattern of each sub-array is roughly the same, that is, the field distribution in space is roughly the same, the crests coincide with the crests, and the troughs coincide with the troughs.
  • the sub-array radiating elements of the antenna are close to each other, resulting in serious mutual coupling, poor antenna isolation, and difficulty in debugging.
  • the power ratio between the sub-array radiating elements of the antenna is small, the first side lobe on the horizontal plane of 1710MHz is poor, and the horizontal wave width is small; the power between the sub-array radiating elements of the antenna is relatively small.
  • the second side lobe of the 2690MHz horizontal plane is poor, and the horizontal wave width is large; therefore, the contradiction between the two cannot be solved by simply relying on the shaping design, and the horizontal plane wave width is often too divergent. For example 23-43°.
  • FIG. 2 shows a second embodiment of a conventional multi-beam antenna. All the sub-arrays of the antenna are the same, uniform in the horizontal direction, uniform in the vertical direction, and only half the array spacing in the vertical direction.
  • the horizontal plane pattern corresponding to each sub-array is roughly the same, that is, the field distribution in space is roughly the same.
  • the wave crest coincides with the wave crest
  • the wave trough coincides with the wave trough.
  • the patterns corresponding to the sub-arrays consisting of radiating elements 2-6-1, 2-6-2, 2-6-3, 2-6-4 are roughly the same.
  • FIG. 3 shows a third embodiment of a conventional multi-beam antenna. All the sub-arrays of the antenna are the same, only the horizontal direction is dislocated, and the vertical direction is uniform.
  • the horizontal plane pattern corresponding to the sub-array composed of radiation units 2-5-1, 2-5-2, 2-5-3, and 2-5-4 on the reflector 1 is the same as that of the radiation units 2-6-
  • the sub-arrays composed of 1, 2-6-2, 2-6-3, and 2-6-4 have different horizontal plane patterns.
  • the synthesized antenna Due to the different horizontal plane patterns corresponding to the sub-arrays of the antenna, that is, the field distribution in space is different, the wave crest and the wave crest no longer overlap, and the wave trough and the wave trough no longer overlap, so the synthesized antenna The side lobes of the pattern in the horizontal plane are suppressed, thereby reducing the neighbor interference between beams at close range.
  • the horizontal misalignment of the sub-array radiating elements will also cause the spatial phase difference of the three-dimensional patterns of the corresponding radiating elements, which will lead to the deterioration of the vertical tilt angle accuracy and side lobes of the antenna, and the related adjacent area interference and coverage holes will increase.
  • the purpose of the present invention is to provide a multi-beam antenna, which can overcome the defect of the horizontal dislocation of the radiating element, that is, solve the problem that the three-dimensional pattern of the radiating element has a phase difference in space, thereby causing the vertical plane of the antenna to be tilted down.
  • Accuracy and side lobes are degraded, and the related adjacent area interference and coverage holes increase; at the same time, it can have the advantages of horizontal dislocation of the radiating unit, that is, the horizontal side lobes are low to control the adjacent beams within a short range. area interference.
  • the present invention provides a multi-beam antenna, which includes a reflector and an antenna array disposed on the reflector.
  • the antenna array is formed by a hybrid array of multiple sub-arrays, and each of the A plurality of radiation units are uniformly arrayed; the types, numbers and/or spacings of the radiation units in the sub-arrays of different types are different.
  • a plurality of the sub-arrays are mixed and arrayed along the vertical direction of the reflector, and all the sub-arrays are aligned in the center along the horizontal direction of the reflector.
  • the number of the sub-arrays in the antenna array is greater than or equal to five.
  • the number of the radiating elements in each of the sub-arrays is greater than or equal to three.
  • the distance between the adjacent radiating elements in each of the sub-arrays is 0.5-0.6 wavelengths of the center frequency.
  • the distance between the adjacent sub-arrays in the antenna array is 0.6-0.8 wavelengths of the center frequency.
  • the antenna array is formed by a mixed array of a first seed array and a second seed array, and the types of radiation elements in the first seed array and the second seed array, Quantity and/or spacing varies.
  • the number of radiation units in the first sub-array is 4, and the number of radiation units in the second sub-array is 3; the antenna array consists of 9
  • the first seed array and the second seed array are mixed and formed, the first to third subarrays are the first seed array, the fourth to seventh subarrays are the second seed array, and the eighth to ninth subarrays are the second seed array.
  • the number of sub-arrays is the first sub-array.
  • the antenna array is formed by a mixed array of a first sub-array, a second sub-array, a third sub-array and a fourth sub-array, the first sub-array, the third sub-array
  • the types, numbers and/or spacings of radiation elements in the second sub-array, the third sub-array and the fourth sub-array are different.
  • the number of radiation elements in the first sub-array, the second sub-array and the fourth sub-array is 4, and the number of radiation elements in the third sub-array is 4
  • the 1st to 2nd subarrays are the first subarray
  • the 3rd to 4th subarrays are the second subarray
  • the 5th to 10th subarrays are the third subarray
  • the 11th to 12th subarrays are the third subarray.
  • the number of sub-arrays is the fourth sub-array.
  • the multi-beam antenna of the present invention is formed by a plurality of different types of sub-arrays mixed in a certain order on the reflector, and at least one of the three factors of the type, number and/or spacing of the radiation elements of the different types of sub-arrays The factors are different.
  • the three-dimensional patterns of different types of sub-arrays have different spatial orientations, shapes, and zero-point positions and field strengths.
  • the side lobes of the synthesized array beams in the horizontal plane, that is, the side lobes below the horizontal plane, will be significantly reduced.
  • the interference of adjacent cells in the short range is reduced, which has the advantages of horizontal dislocation of the radiating element; the horizontal plane wave width also has a certain degree of convergence, and at the same time, it avoids the horizontal dislocation of the factor array radiating element, which causes the antenna vertical plane downtilt angle accuracy and side lobe change. poor, the related neighbor interference and coverage holes increase, so that the defect of the horizontal dislocation of the radiating element can be overcome.
  • all the sub-arrays are aligned in the center along the horizontal direction of the reflector, which is beneficial to simplify the space layout of the whole machine, and can also reduce the weight of the antenna by reducing the number of radiating elements.
  • 1 is a schematic diagram of a first existing multi-beam antenna
  • FIG. 2 is a schematic diagram of a second existing multi-beam antenna
  • FIG. 3 is a schematic diagram of a third existing multi-beam antenna
  • FIG. 4 is a schematic diagram of a first preferred embodiment of the multi-beam antenna of the present invention.
  • 5 is a sub-array horizontal plane pattern of the first preferred embodiment of the multi-beam antenna of the present invention.
  • FIG. 6 is a schematic diagram of a second preferred embodiment of the multi-beam antenna of the present invention.
  • references in this specification to "one embodiment”, “an embodiment”, “example embodiment”, etc. mean that the described embodiment may include specific features, structures or characteristics, but not every Embodiments must contain these specific features, structures or characteristics. Furthermore, such expressions are not referring to the same embodiment. Further, when a particular feature, structure or characteristic is described in conjunction with an embodiment, whether or not explicitly described, it has been shown that it is within the knowledge of those skilled in the art to incorporate such feature, structure or characteristic into other embodiments .
  • the present invention provides a multi-beam antenna, comprising a reflector and an antenna array arranged on the reflector, wherein the antenna array is formed by a mixed array of multiple sub-arrays.
  • Each sub-array is formed by a uniform array of multiple radiation units; the types, numbers and/or spacings of radiation units in different types of sub-arrays are different.
  • the sub-array types of the multi-beam antenna are N, and N is greater than or equal to 2, for example, the sub-array types are 2 types, 3 types, 4 types, and 5 types. Since the patterns of different types of sub-arrays of multi-beam antennas have different field distributions in space, the positions of the corresponding peaks and troughs are also different, and the horizontal plane patterns are also different.
  • the side lobes of the synthesized antenna pattern in the horizontal plane are suppressed, and the beam The interference between adjacent cells within a short range is reduced accordingly.
  • the wave width range in the horizontal plane of the pattern synthesized by the superposition of all the sub-arrays is reduced, and at the same time, the horizontal misalignment of the radiating elements of the factor array is avoided to cause the down-tilt angle accuracy and side lobes of the antenna vertical plane to deteriorate. The problem.
  • a variety of sub-arrays are mixed and formed along the vertical direction of the reflector, and all the sub-arrays are aligned in the center along the horizontal direction of the reflector, which is conducive to simplifying the spatial layout of the whole machine, and can also be reduced by reducing the number of radiation units.
  • Antenna weight is a variety of sub-arrays mixed and formed along the vertical direction of the reflector, and all the sub-arrays are aligned in the center along the horizontal direction of the reflector, which is conducive to simplifying the spatial layout of the whole machine, and can also be reduced by reducing the number of radiation units. Antenna weight.
  • the number of sub-arrays in the antenna array is greater than or equal to five.
  • the distance between adjacent sub-arrays in the antenna array is 0.6-0.8 wavelengths of the center frequency.
  • the number of radiation units in each sub-array is greater than or equal to three.
  • the distance between adjacent radiation units in each sub-array is 0.5-0.6 wavelengths of the center frequency.
  • the first sub-array It is composed of A1 radiating elements with horizontal spacing H1-1, H1-2...
  • the vertical spacing V1 of the adjacent sub-arrays on the right, V1 is 0.6-0.8 wavelengths of the center frequency, and the numbers of the corresponding radiation units are 2-1-1, 2-1-2, 2-1-3...
  • the second sub-array It is composed of A2 radiating units with horizontal spacing H2-1, H2-2... uniformly arrayed, H2 is 0.5-0.6 wavelengths of the center frequency, A2 is greater than or equal to 3, the second sub-array and the right
  • the vertical spacing V2 of adjacent sub-arrays, V2 is 0.6-0.8 wavelengths of the center frequency, and the numbers of the corresponding radiation units are 2-2-1, 2-2-2, 2-2-3...
  • the antenna array of the present invention is formed by a mixed array of a first sub-array and a second sub-array, and the types, numbers and/or spacings of radiating elements in the first sub-array and the second sub-array are different.
  • FIG. 4 is a schematic diagram of a first preferred embodiment of the multi-beam antenna of the present invention.
  • the number of radiation elements in the first sub-array of the multi-beam antenna is 4, the number of radiation elements in the second sub-array is 3, and the number of radiation elements in the first sub-array is 4.
  • the 2nd, 3rd, 8th, and 9th subarrays are the first subarrays, and the 4th, 5th, 6th, and 7th subarrays are the second subarrays.
  • the patterns of the first and second sub-arrays of the antenna have different field distributions in space, the positions of the corresponding wave crests and valleys are also different, and the horizontal plane patterns are also different.
  • the horizontal plane pattern corresponding to the sub-array composed of 3-2, 2-3-3, 2-3-4 and the sub-array composed of radiating elements 2-5-1, 2-5-2, 2-5-3 The corresponding horizontal plane directions are different. As shown in Figure 5, the side lobes of the synthesized antenna pattern in the horizontal plane are thus suppressed, and the adjacent cell interference within a short range between beams is reduced accordingly.
  • the downtilt angle accuracy and side lobe in the vertical plane of the pattern synthesized by the superposition of all the sub-arrays are comparable to those of conventional antennas.
  • the wave width range of the superposition and synthesis of all sub-arrays becomes smaller in the horizontal plane, for example, it converges to 27-38° in the 1710-2170MHz frequency band, the energy is more concentrated, and the coverage effect is better.
  • the antenna array is formed by a mixed array of a first seed array, a second seed array, a third seed array and a fourth seed array, and the first seed array, the second seed array, the third seed array and the fourth seed array.
  • the type, number and/or spacing of radiating elements in the array varies.
  • FIG. 6 is a schematic diagram of a second preferred embodiment of the multi-beam antenna of the present invention, the number of radiation elements in the first sub-array, the second sub-array and the fourth sub-array is 4, and the number of radiation elements in the third sub-array
  • the 1st to 2nd subarrays are the first seed arrays
  • the 3rd to 4th subarrays are the second seed arrays
  • the 5th to 10th subarrays are the third seed arrays
  • the 11th to 12th subarrays are the fourth seed arrays array.
  • the directional patterns of the first, second, third and fourth sub-arrays of the antenna have different field distributions in space, the positions of the corresponding peaks and troughs are also different, and the horizontal plane patterns are also different.
  • the radiation elements 2-3 -1, 2-3-2, 2-3-3, 2-3-4 composed of sub-arrays corresponding to the horizontal plane pattern and the radiation elements 2-5-1, 2-5-2, 2-5-3
  • the corresponding horizontal plane patterns of the formed sub-arrays are different.
  • the side lobes in the horizontal plane of the pattern synthesized by the superposition of all the sub-arrays are suppressed, and the adjacent area interference between the beams in the short range is reduced accordingly.
  • the downtilt angle accuracy and side lobe in the vertical plane of the pattern synthesized by the superposition of all the sub-arrays are comparable to those of conventional antennas.
  • the wave width range of the superposition and synthesis of all sub-arrays becomes smaller in the horizontal plane, for example, it converges to 25-41° in the 1710-2690MHz frequency band, the energy is more concentrated, and the coverage effect is better.
  • the multi-beam antenna of the present invention is formed by a plurality of different types of sub-arrays mixed in a certain order on the reflector. At least one of the factors is different.
  • the three-dimensional patterns of different types of sub-arrays have different spatial orientations, shapes, and zero-point positions and field strengths.
  • the side lobes of the synthesized array beams in the horizontal plane, that is, the side lobes below the horizontal plane, will be significantly reduced.
  • the interference of adjacent cells in the short range is reduced, so that it has the advantages of horizontal dislocation of the radiation unit; the horizontal plane wave width also has a certain degree of convergence, and at the same time, it avoids the horizontal dislocation of the factor array radiation unit, which causes the antenna vertical plane downtilt angle accuracy and side lobe change. If the difference is poor, the related neighbor interference and coverage holes increase, so that the defect of the horizontal dislocation of the radiating element can be overcome.
  • all the sub-arrays are aligned in the center along the horizontal direction of the reflector, which is beneficial to simplify the space layout of the whole machine, and can also reduce the weight of the antenna by reducing the number of radiating elements.

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  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Aerials With Secondary Devices (AREA)

Abstract

L'invention concerne une antenne multifaisceau, comprenant une plaque de réflexion et un réseau d'antennes disposé sur la plaque de réflexion. Le réseau d'antennes est formé par mélange et mise en réseau de types de sous-réseaux multiples, et chacun des sous-réseaux est formé par l'agencement uniforme d'unités de rayonnement multiples ; les types, le nombre et/ou des espaces des unités de rayonnement dans les différents types de sous-réseaux sont différents. À cet égard, la présente invention permet de surmonter le défaut selon lequel les unités de rayonnement sont disloquées horizontalement, à savoir les problèmes liés au fait que, comme un diagramme directionnel tridimensionnel de l'unité de rayonnement présente une différence de phase dans l'espace, la précision de l'angle d'inclinaison vers le bas du plan vertical et le lobe latéral d'une antenne sont faibles, et que les interférences associées de cellules voisines et le trou de couverture sont augmentés ; en outre, l'invention présente l'avantage d'une dislocation dans le sens horizontal de l'unité de rayonnement, le lobe latéral du plan horizontal étant plus bas pour commander les interférences de cellules voisines entre les faisceaux dans la plage de distance proche.
PCT/CN2021/073889 2020-07-15 2021-01-27 Antenne multifaisceau Ceased WO2022012021A1 (fr)

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CN202010682472.5A CN111682323B (zh) 2020-07-15 2020-07-15 多波束天线
CN202010682472.5 2020-07-15

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Cited By (1)

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CN114361769A (zh) * 2022-01-04 2022-04-15 上海航天电子通讯设备研究所 一种非周期排布阵列天线

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CN111682323B (zh) * 2020-07-15 2025-10-31 摩比天线技术（深圳）有限公司 多波束天线
CN114447585B (zh) * 2022-01-29 2024-03-19 京东方科技集团股份有限公司 多波束天线及其制备方法、通信装置

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CN108232466A (zh) * 2018-01-09 2018-06-29 广东博纬通信科技有限公司 一种混合多波束天线
WO2020028370A1 (fr) * 2018-08-03 2020-02-06 Quintel Cayman Limited Éléments parasites pour isoler des trajets de signaux orthogonaux et générer une résonance supplémentaire dans une antenne à double polarisation
CN109509995A (zh) * 2018-12-28 2019-03-22 广东博纬通信科技有限公司 一种混合多波束天线
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CN114361769A (zh) * 2022-01-04 2022-04-15 上海航天电子通讯设备研究所 一种非周期排布阵列天线

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