WO2020094219A1 - Antenne et station de base - Google Patents

Antenne et station de base Download PDF

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Publication number
WO2020094219A1
WO2020094219A1 PCT/EP2018/080398 EP2018080398W WO2020094219A1 WO 2020094219 A1 WO2020094219 A1 WO 2020094219A1 EP 2018080398 W EP2018080398 W EP 2018080398W WO 2020094219 A1 WO2020094219 A1 WO 2020094219A1
Authority
WO
WIPO (PCT)
Prior art keywords
radiating elements
antenna
separator
column
gaps
Prior art date
Application number
PCT/EP2018/080398
Other languages
English (en)
Inventor
Juan Segador Alvarez
Dingjiu DAOJIAN
Bruno BISCONTINI
Original Assignee
Huawei Technologies Co., Ltd.
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Huawei Technologies Co., Ltd. filed Critical Huawei Technologies Co., Ltd.
Priority to PCT/EP2018/080398 priority Critical patent/WO2020094219A1/fr
Publication of WO2020094219A1 publication Critical patent/WO2020094219A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
    • H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
    • H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
    • H01Q1/246—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for base stations
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
    • H01Q15/14—Reflecting surfaces; Equivalent structures
    • H01Q15/18—Reflecting surfaces; Equivalent structures comprising plurality of mutually inclined plane surfaces, e.g. corner reflector
    • 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
    • H01Q19/106—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 using two or more intersecting plane surfaces, e.g. corner reflector antennas
    • 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
    • H01Q19/108—Combination of a dipole with a plane reflecting surface
    • 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
    • H01Q21/062—Two dimensional planar arrays using dipole aerials
    • 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
    • H01Q21/08—Arrays of individually energised antenna units similarly polarised and spaced apart the units being spaced along or adjacent to a rectilinear path
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/24—Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction
    • H01Q21/26—Turnstile or like antennas comprising arrangements of three or more elongated elements disposed radially and symmetrically in a horizontal plane about a common centre

Definitions

  • the present invention relates to an antenna for mobile communications, for instance to a multi-band antenna.
  • the antenna is particularly a compact antenna with a controlled horizontal beam width (HBW), for instance with a 65° Horizontal 3dB beam width.
  • the antenna has a plurality of radiating elements, which are arranged in at least two parallel columns.
  • the new architectures must support 4x4 and 8x8 MIMO (which is necessary in higher frequency bands, but is also wished for in lower frequency bands, so as to be ready for future deployments). This means that the number of ports/antenna arrays needs to be duplicated at least in the higher frequency bands.
  • new techniques are required that allow controlling the HBW, e.g., to keep it stable around 65° HBW over a wide frequency band in a very limited aperture, while having very tightly coupled columns/arrays of radiating elements side-by-side.
  • a conventional approach combines radiating elements from different columns with the target of achieving a HBW reduction.
  • This approach relies on having displaced radiating elements in the horizontal antenna direction.
  • this approach does not increase the gain of the antenna, because the arrangement also generates unwanted sidelobes in non principal planes that limit the maximum gain that can be reached.
  • these unwanted sidelobes in non-principal planes create interference with other cells, thus degrading system performance.
  • this approach works to reshape the pattern in the horizontal plane, it introduces other problems that can have an impact on the system performance, and can only be identified when looking at the antenna 3D pattern (not only at the principal planes, horizontal and vertical).
  • An objective is to provide an antenna for which the HBW is controlled, particularly in multi-column and/or tightly coupled arrays of radiating elements.
  • the HBW of the antenna should specifically be kept stable, e.g., around 65° over a wide frequency band, for a case where several antenna arrays or columns of radiating elements are strongly coupled to each other and placed in a narrow antenna aperture.
  • embodiments of the invention base on the arrangement of at least one electrically conductive separator (e.g., an electrical wall) with a certain shape between radiating elements in at least two columns.
  • the radiating elements are arranged with a vertical shift between the at least two columns, which allow reusing free gaps for introducing the separator.
  • the separator may have a determined, particularly meandering shape, between neighboring columns. Further, a shape and position of a resonating slot in the separator is proposed, which does not degrade the antenna front- to-back ratio and/or the column-to-column coupling.
  • a first aspect of the invention provides an antenna, comprising: a plurality of first radiating elements arranged in a first column, a plurality of second radiating elements arranged in a second column parallel to the first column, and an electrically conductive separator extending between the first radiating elements and the second radiating elements, wherein the separator is located: partly in one or more first gaps formed between at least some of the first radiating elements, each of the first gaps being located next to one of the second radiating elements, and partly in one or more second gaps formed between at least some of the second radiating elements, each of the second gaps being located next to one of the first radiating elements.
  • the separator may be an electrically conductive wall or fence.
  • the outline of the separator may go around the radiating elements, thereby extending along the free gaps between the first and second radiating elements (in column direction).
  • the aperture of the at least two columns in horizontal direction is increased, and the HBW is reduced.
  • the separator helps to control the HBW in the multicolumn tightly coupled antenna.
  • the at least two columns may form or be part of one array or different arrays of the antenna. In a typical implementation, each column of the at least two columns forms one array of the antenna.
  • the separator is a meandering wall or fence.
  • the meandering shape of the separator provides a good increase of the horizontal antenna aperture, particularly of each column. Accordingly, an efficient control of the HBW is achieved.
  • the separator partially surrounds each of the first and second radiating elements.
  • the separator comprises one or more U-shaped or V-shaped or rounded segments, wherein each of the segments is located at least partly in one of the first gaps or in one of the second gaps.
  • the separator is discontinuous.
  • the separator may comprise a plurality of separator parts.
  • each of the separator parts may separate a first radiating element and two closest second radiating elements. Material cost and weight can thus be saved.
  • the separator is continuous. The separator can thus be manufactured using simple methods, and a good isolating effect can be achieved.
  • the separator is not limited to a specific shape or continuity.
  • any two adjacent first radiating elements and any two adjacent second radiating elements are separated by a same spacing, and the first column is displaced with respect to the second column by an offset which is less than said spacing.
  • the first gaps are formed between adjacent first radiating elements.
  • the second gaps are formed between adjacent second radiating elements.
  • the separator can be placed located partly in the first and second gaps, respectively, in order to control the HBW of the antenna.
  • the offset is in the range of 0.4*S to 0.6*S, wherein S is said spacing.
  • the offset may notably be 0.5*S.
  • the separator comprises one or more slots.
  • the slot is in particular a resonating slot and further improves the HBW.
  • slot can reduce the HBW.
  • each slot is placed on a part of the separator located in a first gap or in a second gap.
  • each slot improves, particularly reduces, the HBW, while it creates no problems with a front-to-back ratio of the antenna.
  • each slot is placed such that the center of the slot does not cross any imaginary straight line connecting a first radiating element and a closest one of the second radiating elements.
  • the slot does not have a negative impact on the column-to-column coupling and front- to-back ratio.
  • a length of a slot is between 0.4 and 0.6 times the wavelength corresponding to a working frequency of the first and/or second radiating elements.
  • the antenna further comprises: a plurality of third radiating elements arranged in a third column parallel to the second column, a further electrically conductive separator extending between the second radiating elements and the third radiating elements, wherein the further separator is located: partly in one or more third gaps formed between at least some of the third radiating elements, each of the third gaps being located next to one of the second radiating elements, and partly in one or more of the second gaps formed between at least some of the second radiating elements.
  • the first and second radiating elements are configured to radiate in a first frequency band and in a second frequency band, respectively, wherein the first frequency band and the second frequency band are identical or overlapping.
  • the first and second radiating elements in the at least two columns may form or be part of the same array or a different array of the antenna.
  • the antenna further comprises: one or more further radiating elements configured to work in a different frequency band than the first and/or second radiating elements. Accordingly, the antenna have further antenna arrays.
  • the solution of the invention is compatible also with complex antenna architectures, particularly multiband antenna architectures.
  • a second aspect of the invention provides a base station comprising an antenna according to the first aspect or any one of the implementation forms of the first aspect, and a radio transmitter connected to the antenna
  • the base station of the second aspect enjoys all advantages and effects of the antenna of the first aspect.
  • the application of the antenna is, however, not limited to a base station.
  • a base station may also be referred to in the art as a network access node, a radio client device, an access client device, an access point, e.g., a Radio Base Station (RBS), which in some networks may be referred to as transmitter,“gNB”,“gNodeB”,“eNB”,“eNodeB”, “NodeB” or“B node”, depending on the technology and terminology used.
  • RBS Radio Base Station
  • the radio client devices may be of different classes such as macro eNodeB, home eNodeB or pico base station, based on transmission power and thereby also cell size.
  • the radio client device can, for example, be a Station (STA), which is any device that contains an IEEE 802.11- conformant Media Access Control (MAC) and Physical Layer (PHY) interface to the Wireless Medium (WM).
  • STA Station
  • MAC Media Access Control
  • PHY Physical Layer
  • the radio client device may also be a base station corresponding to the fifth generation (5G) wireless systems.
  • 5G fifth generation
  • FIG. 1 shows an antenna according to an embodiment of the invention.
  • FIG. 2 shows an antenna according to an embodiment of the invention.
  • FIG. 3 shows an antenna according to an embodiment of the invention.
  • FIG. 4 shows an antenna according to an embodiment of the invention.
  • FIG. 5 shows an exemplary antenna
  • FIG. 6 shows an antenna according to an embodiment of the invention.
  • FIG. 7 shows an exemplary antenna
  • FIG. 8 shows an antenna according to an embodiment of the invention.
  • FIG. 9 shows an antenna according to an embodiment of the invention.
  • FIG. 10 shows an antenna according to an embodiment of the invention.
  • FIG. 11 shows an antenna according to an embodiment of the invention.
  • FIG. 12 shows an antenna according to an embodiment of the invention.
  • FIG. 1 shows an antenna 100 according to an embodiment of the invention.
  • the antenna 100 includes, as an example, radiating elements arranged in two columns.
  • a plurality of first radiating elements lOle are arranged in a first column 101
  • a plurality of second radiating elements l02e are arranged in a second column 102 parallel to the first column 101.
  • the antenna 100 may include more columns and/or more (different) radiating elements than the ones arranged in the first and second columns 101, 102 shown in FIG. 1.
  • First gaps lOlg are formed between the first radiating elements lOle, and second gaps l02g are formed between the second radiating elements l02e.
  • the columns 101 and 102 are arranged such that each of the first gaps lOlg is located next to one of the second radiating elements l02e, and each of the second gaps l02g is located next to one of the first radiating elements lOle. For instance, this can be realized by separating any two adjacent first radiating elements lOle and any two adjacent second radiating elements l02e by a same spacing, and arranging the first column 101 is displaced with respect to the second column 102, particularly by an offset which is less than said spacing.
  • the first and second radiating elements lOle, l02e may be configured to radiate in a first frequency band and in a second frequency band, respectively, wherein the first frequency band and the second frequency band may be identical or overlapping. That is, the first and second columns 101 and 102 may be part of or form one or more arrays of the antenna 100.
  • the antenna 100 may be a multiband antenna.
  • the first radiating elements lOle and second radiating elements l02e are configured to radiate in non-overlapping frequency bands.
  • the antenna 100 may be part of an apparatus, for example, a base station, wherein it may be connected to a radio transmitter of the apparatus (e.g., base station).
  • the antenna 100 further comprises an electrically conductive separator 103, which may be shaped as a wall or fence or the like.
  • the separator 103 extends between the first radiating elements lOle and the second radiating elements l02e, particularly in the same direction as the columns. This may be regarded as the vertical direction of the antenna 100, especially with respect to the HBW of the antenna 100.
  • the separator 103 is located partly in one or more first gaps lOlg formed between at least some of the first radiating elements lOle, and partly in one or more second gaps formed between at least some of the second radiating elements l02e. As shown exemplarily in FIG.
  • the separator 103 may be located partly in the first gaps lOlg formed between all of the first radiating elements lOle, i.e. all first gaps lOlg, and partly in second gaps l02g formed between all of the second radiating elements l02e, i.e. all second gaps l02g.
  • the separator 103 may be a meandering separator, e.g., meandering wall or fence, i.e. with a meandering shape, and/or the separator 103 may partially surround each of the first and second radiating elements lOle, l02e, i.e. may extend partially around these elements lOle, l02e.
  • FIG. 2 shows an antenna 100 according to an embodiment of the invention, which builds on the antenna 100 shown in FIG. 1. Same elements in FIG. 1 and FIG. 2 have identical reference signs and function likewise.
  • the antenna 100 shown in FIG. 2 includes further a third column 201 of radiating elements 20 le. That is, a plurality of the third radiating elements 20 le are arranged in the third column 201 parallel to the second column 102 (and first column 101).
  • the third column 201 is next to the second column 102, i.e. the second column 102 is in between the first column 101 and third column 201.
  • Third gaps 20lg are formed between the third radiating elements 20 le, wherein each of the third gaps 20 lg is located next to one of the second radiating elements 102.
  • the antenna 100 of FIG. 2 comprises a further electrically conductive separator 203, which extends between the second radiating elements l02e and the third radiating elements 20 le, particularly in the same direction as the columns.
  • the further separator 203 is located partly in one or more third gaps 20 lg formed between at least some third radiating elements 20 le, and partly in one or more of the second gaps formed between at least some of the second radiating elements l02e.
  • the further separator 203 may be a wall or fence, particularly with a meandering shape.
  • the separator 103, 203 placement can in principle be used for any bi-dimensional antenna 100, but for practical implementations it has been found to be very effective to control particularly the HBW of a 1L4H antenna architecture, as exemplarily depicted in FIG. 3 (in a top view) and in FIG. 4 (in a perspective view).
  • the total width of this antenna may be less than 400 mm, so less than 100 mm may be available for each HB array.
  • the columns 101 and 102 are shifted against each other (in the vertical direction of the antenna 100), so as to arrange the first gaps lOlg and the second gaps l02g, respectively, next to the second radiating elements l02e and first radiating elements lOle.
  • the separator 103 is located between the first and second radiating elements lOle, l02e. Additional columns 301 and 302 are provided in the antenna 100.
  • third radiating elements 30 le are arranged in a third column 301 parallel to the first and second columns 101, 102.
  • fourth radiating elements 302e are arranged in a fourth column 302 parallel to the other columns 101, 102, 301.
  • Third gaps 30lg are formed between the third radiating elements 30 le, and fourth gaps 302g are formed between the fourth radiating elements 302e.
  • the third gaps 30 lg are arranged next to fourth radiating elements 302e, and the fourth gaps 302g are arranged next to the third radiating elements 30 lg.
  • a further separator 303 here with an optimized meandering shape, is added between the third and fourth radiating elements 30 le, 302e.
  • first further radiating elements 304e may be arranged in a column 304, wherein said column 304 is placed into the second column 102, i.e. the said column 304 and the second column 102 are interleaved. Accordingly, further radiating elements 304e are arranged between some adjacent second radiating elements l02e.
  • second further radiating elements 305e may be arranged in another column 305, wherein said column 305 is placed into the fourth column 302, i.e. said column 305 and the fourth column 302 are interleaved.
  • further radiating elements 305e are arranged between some adjacent fourth radiating elements 302e.
  • the first further radiating elements 304e of the column 304 and the second further radiating elements 305e of the column 305 may be placed such that the columns 304 and 305 are shifted against each other along the column direction (vertically).
  • a compact multiband antenna 100 with improved HBW can be realized.
  • the width of the aperture for each of the individual columns 101, 102, 301, 302 (i.e. the surface that the respective radiating elements illuminate) can be increased, the radiation pattern can be correctly conformed, and as a consequence the HBW can be decreased while the gain can be increased.
  • the coupling between the columns 101, 102, 301 and 302 would be very high, and the radiation would not be conformed correctly.
  • the pattern In the vertical direction of the antenna 100 (i.e. along the columns 101, 102, 301, 302), the pattern is mainly dominated by the array factor, so even if the unitary vertical pattern is impacted by the presence of the separators 103, 303, the impact on the vertical pattern overall can be neglected.
  • FIG. 5 shows an exemplary antenna not according to an embodiment of the invention, particularly since it shows how an equivalent aperture would look like without using separators 103 and 303.
  • the resulting equivalent aperture for each column is shown alternatively in white and black color.
  • the equivalent aperture is filled with black color
  • the equivalent aperture is filled with white color.
  • FIG. 6 shows in comparison an antenna 100 according to an embodiment of the invention, which builds on the antenna 100 shown in FIG. 3 and FIG. 4 and this includes separators 103 and 303.
  • the equivalent aperture for each column 101, 102, 301, 302 is filled alternatively in white and black color.
  • the equivalent aperture is filled with black color
  • the equivalent aperture is filled with white color.
  • each radiating element lOle, l02e, 30le, 302e illuminates in a horizontal direction of the antenna 100 increases significantly after adding the separators 103 and
  • one or more resonant slots may be added to the separator 103, 203, and/or 303, in order to further improve the HBW at least at a certain frequency.
  • Placing resonant slots in side walls is a conventional technique to reduce HBW.
  • the slots create problems with front-to-back ratio (FBR), of an antenna, when placed in the outer side, or problems with coupling between columns of radiating elements, when placed in inner side.
  • FIG. 7 shows an exemplary antenna, in which slots are placed as conventionally.
  • FIG. 8 shows an antenna according to an embodiment of the invention, which bases on the antenna 100 shown in FIG. 1, FIG. 3 and FIG. 4. Same elements in these figures are labelled with the same reference signs and function likewise.
  • the antenna 100 of FIG. 8 includes at least the separator 103 between the first radiating elements lOle and the second radiating elements l02e.
  • a resonant slot 800 is placed in a determined location of the separator 103, in order to achieve a positive impact on the HBW and radiation pattern, but without having a negative impact on column-to-column coupling and front-to-back ratio, respectively.
  • the separator 103 may particularly comprise one or more slots 800.
  • Each of the one or more slots 800 is particularly placed such on the separator 103 that it does not cross any imaginary straight line connecting a first radiating element lOle and a closest one of the second radiating elements l02e (i.e. closest to said first radiating element lOle).
  • the slot 800 is particularly not placed directly in the outer edge of the reflector, which mitigates potential front-to-back radiation issues.
  • the slot 800 is not placed such that the center of the slot is crossing an imaginary line connecting two radiating elements lOle, l02e of different columns 101, 102, which mitigates the column- to-column coupling issue.
  • a slot is placed either in the outer edge (what creates the FBR issues) or such that the center of the slot is crossing an imaginary line connecting two elements from different columns when placed in the inner side (which creates coupling issues).
  • FIG. 9 an exemplary antenna and in FIG. 10 an antenna 100 according to an embodiment of the invention are depicted in a 3D view. It is specifically show how the slot 800 looks like conventionally (shown in FIG. 9) and according to embodiments of the invention (shown in FIG. 10).
  • the total length of a slot 800 in the antenna 100 may be approximately half-wavelength at the frequency, where maximum reduction in the HBW is to be achieved.
  • a length of the slot 800 may be between 0.4 and 0.6 times the wavelength corresponding to a working frequency of the first and/or second radiating elements lOle, l02e, particularly 0.5 times.
  • the antennas 100 are not limited to any specific shape of the separator 103 (and/or 203 and/or 303), in particular not the meandering shape of the e.g., wall or fence. That is, the separator 103 may have straight, chamfered or rounded comers, wherein the number of bends is not fixed, and the separator 103 can be continuous or discontinuous. The only requirement is that it should prolong along the free gaps lOlg, l02g between the radiating elements lOle, l02e of the adjacent columns 101, 102 in a vertical direction (i.e. along the columns). That is, that it is at least partly located in some of each gaps lOlg, l02g.
  • the separator 103 may comprise one or more U-shaped or V-shaped or rounded segments, wherein each of the segments is located at least partly in one of the first gaps lOlg or in one of the second gaps l02g.
  • FIG. 10 notably shows a separator 103 with U-shape segments 900.
  • FIG. 11 and FIG. 12 show each an antenna 100 according to an embodiment of the invention.
  • the antennas 100 of FIG. 11 and FIG. 12 are two additional examples with a different shape of the separator 103 (for reducing a number of bends) and with a discontinuous separator 103, respectively. Again these are merely two additional examples with illustrative purpose, and other possible implementations can be derived from them.
  • FIG. 11 particularly shows an antenna 100 with a separator 103 having V-shaped segments 1000.
  • FIG. 12 shows an antenna 100 with a discontinuous separator 103 having particularly separated U-shaped segments 1100.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)

Abstract

L'invention concerne une antenne pour communications mobiles comprenant une pluralité de premiers éléments rayonnants agencés dans une première colonne, et une pluralité de seconds éléments rayonnants agencés dans une seconde colonne parallèle à la première colonne. L'antenne comprend en outre un séparateur électriquement conducteur s'étendant entre les premiers éléments rayonnants et les seconds éléments rayonnants. Le séparateur est situé en partie dans un ou plusieurs premiers espaces formés entre au moins certains des premiers éléments rayonnants, chacun des premiers espaces étant situé à côté de l'un des seconds éléments rayonnants. Le séparateur est également situé en partie dans un ou plusieurs seconds espaces formés entre au moins certains des seconds éléments rayonnants, chacun des seconds espaces étant situé à côté de l'un des premiers éléments rayonnants. L'antenne peut ainsi avoir une largeur de faisceau horizontale souhaitée.
PCT/EP2018/080398 2018-11-07 2018-11-07 Antenne et station de base WO2020094219A1 (fr)

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Application Number Priority Date Filing Date Title
PCT/EP2018/080398 WO2020094219A1 (fr) 2018-11-07 2018-11-07 Antenne et station de base

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Application Number Priority Date Filing Date Title
PCT/EP2018/080398 WO2020094219A1 (fr) 2018-11-07 2018-11-07 Antenne et station de base

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CN111668605A (zh) * 2020-07-02 2020-09-15 武汉虹信通信技术有限责任公司 用于高铁沿线的电调天线

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US20140187174A1 (en) * 2012-12-31 2014-07-03 Futurewei Technologies, Inc. Smart Antenna Platform for Indoor Wireless Local Area Networks
CN205846249U (zh) * 2016-07-01 2016-12-28 湖北日海通讯技术有限公司 天线装置

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Publication number Priority date Publication date Assignee Title
US6195063B1 (en) * 1997-05-30 2001-02-27 Kathrein-Werke Kg Dual-polarized antenna system
US7868843B2 (en) * 2004-08-31 2011-01-11 Fractus, S.A. Slim multi-band antenna array for cellular base stations
US20080094286A1 (en) * 2006-10-16 2008-04-24 Alcatel Lucent Decoupling arrays of radiating elements of an antenna
US20090135076A1 (en) * 2007-11-28 2009-05-28 Senglee Foo Linear antenna array with azimuth beam augmentation by axial rotation
US20140043195A1 (en) * 2010-08-26 2014-02-13 Jaybeam Uk Device and method for controlling azimuth beamwidth across a wide frequency range
US20140187174A1 (en) * 2012-12-31 2014-07-03 Futurewei Technologies, Inc. Smart Antenna Platform for Indoor Wireless Local Area Networks
CN205846249U (zh) * 2016-07-01 2016-12-28 湖北日海通讯技术有限公司 天线装置

Cited By (2)

* Cited by examiner, † Cited by third party
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CN111668605A (zh) * 2020-07-02 2020-09-15 武汉虹信通信技术有限责任公司 用于高铁沿线的电调天线
CN111668605B (zh) * 2020-07-02 2021-07-09 中信科移动通信技术股份有限公司 用于高铁沿线的电调天线

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