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WO2002023669A1 - Antenne double polarisee - Google Patents

Antenne double polarisee Download PDF

Info

Publication number
WO2002023669A1
WO2002023669A1 PCT/NZ2001/000191 NZ0100191W WO0223669A1 WO 2002023669 A1 WO2002023669 A1 WO 2002023669A1 NZ 0100191 W NZ0100191 W NZ 0100191W WO 0223669 A1 WO0223669 A1 WO 0223669A1
Authority
WO
WIPO (PCT)
Prior art keywords
antenna
directors
radiating element
arms
reflector
Prior art date
Application number
PCT/NZ2001/000191
Other languages
English (en)
Inventor
Arthur George Roberts
Mathias Martin Ernest Ehlen
Original Assignee
Andrew Corporation
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 Andrew Corporation filed Critical Andrew Corporation
Priority to AU2001290379A priority Critical patent/AU2001290379A1/en
Publication of WO2002023669A1 publication Critical patent/WO2002023669A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
    • H01Q3/26—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
    • H01Q3/30—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the relative phase between the radiating elements of an array
    • H01Q3/34—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the relative phase between the radiating elements of an array by electrical means
    • H01Q3/36—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the relative phase between the radiating elements of an array by electrical means with variable phase-shifters
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
    • H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
    • 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
    • H01Q19/02—Details
    • H01Q19/021—Means for reducing undesirable effects
    • 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
    • H01Q21/24—Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
    • H01Q3/26—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
    • H01Q3/30—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the relative phase between the radiating elements of an array
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/16—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole
    • H01Q9/28—Conical, cylindrical, cage, strip, gauze, or like elements having an extended radiating surface; Elements comprising two conical surfaces having collinear axes and adjacent apices and fed by two-conductor transmission lines
    • H01Q9/285—Planar dipole

Definitions

  • the present invention relates to a dual polarised antenna. More particularly, but not exclusively, the present invention relates to a dual polarised antenna suitable for use in cellular communication- applications at frequencies between 400 to 3000 MHz.
  • the horizontally polarised component For dual polarised antennas used in cellular communication applications it has been found desirable to skew the radiating elements at + 45° and - 45° to vertical. Such antennas typically have beam widths of 60 to 1 20°. It would be desirable for the horizontally polarised component to be the same as the vertically polarised component at all beam angles. However, for a standard dipole the vertical component remains substantially constant, whereas the horizontal component is increasingly attenuated, at angles away from the main beam direction.
  • NZ333517 discloses an antenna in which slots in a wall are utilised to provide equalisation of the polarisations.
  • the position of the slots cannot be changed independently of the position of the wall. Therefore although polarisation equalisation may be achieved, this approach limits design freedom and may result in other antenna characteristics being compromised.
  • a dual polarised antenna comprising, a reflector; one or more radiating element; and a plurality of directors extending from the reflector dimensioned and positioned to emphasise one polarisation of the beam of the antenna at angles away from the main beam direction.
  • the invention provides an alternative arrangement to the slots of NZ333517.
  • the position of the directors can be altered independently of the other antenna components.
  • the reflector comprises a conductive sheet (which acts as a ground plane) which is electrically coupled to the directors.
  • a plurality of the directors are positioned on a first side of the radiating element(s) and a plurality of the directors are positioned on a second side of the radiating element(s).
  • the directors positioned on the first side of the radiating element(s) are substantially aligned with the plurality of directors positioned on the second side of the radiating element(s).
  • at least some of the directors are aligned with a respective radiating element ⁇ typically aligned horizontally).
  • the directors positioned on the first side of the radiating element(s) are arranged in a first row
  • the directors positioned on the second side of the radiating element(s) are arranged in a second row
  • the first and second rows are substantially parallel with each other.
  • the directors may be formed in a variety of shapes, depending on the design of the radiating element(s), and the desired beam width. However preferably the directors are elongate fingers. The fingers are typically rectangular, most preferably in strip form. This provides for ease of manufacture.
  • the radiating element(s) may be patch elements, but preferably the, or each, radiating element comprises a pair of dipoles, each dipole having a pair of arms.
  • the arms are oriented at + 45° or - 45° with respect to vertical, and may be inclined towards the reflector.
  • the pair of dipoles are in a conventional "crossed- dipole" arrangement.
  • the or each radiating element comprises first, second, third and fourth dipoles arranged around a common central axis, each of the dipoles comprising a pair of elongate dipole arms, wherein the arms of the first dipole and the arms of the third dipole extend in a substantially common first plane on opposite sides of the central axis, the arms of the second dipole and the arms of the fourth dipole extend in a substantially common second plane on opposite sides of the central axis, and the first and second planes intersect at the central axis.
  • the antenna comprises a plurality of radiating elements, which are preferably arranged in a one dimensional array.
  • the directors are free standing conductiye members connected at one end to the reflector. In another embodiment the directors are each disposed on a face of a dielectric substrate.
  • the antenna is suitable for use in a cellular communication system in which the antenna communicates with a mobile communication device.
  • Figure 1 is a front view of a cellular communication system antenna
  • Figure 2 is a schematic circuit diagram showing the beam forming network connected to the dipoles
  • Figure 3 is a perspective view from below the antenna showing the antenna elements in more detail
  • Figure 3a is a cross section through the PCB
  • Figure 4 is a view of a first dipole pair on a board
  • Figure 5 is a view of the other side of the board
  • Figure 6 is a view of a second dipole pair on a board
  • Figure 7 is a view of the other side of the board of Figure 6;
  • Figure 8 is a perspective view from the right side of the antenna showing the antenna elements in more detail
  • Figure 9 is a view of an alternative feed network
  • Figure 10 is a perspective view of an alternative dual polarised antenna.
  • Figure 1 1 is a perspective view of the antenna figure 10 from a different angle.
  • an antenna 1 is mounted on a mounting structure 2.
  • the antenna 1 has a pair of antenna elements 3,4 which are oriented substantially vertically with respect to the ground 5.
  • the element 3 comprises four dipoles 6-9 and the element 4 comprises four dipoles 10-13.
  • the dipoles 6,8,10,1 2 oriented at -45 degrees are connected to a first beam forming network with a single input/output line 14, and the dipoles 7,9,1 1 , 13 oriented at + 45 degrees are connected to a second beam forming network with a single input/output line 15.
  • Variable phase shifters 16,17 are provided so as to generate downtilt in the transmit/receive beams.
  • Parallel lines 18,19 of beam forming fingers are arranged on each side of the elements 3,4, and isolation elements 20,21 are arranged between the elements 3,4.
  • Each isolation element 20,21 may be in the form of a conductive rod, such as the rod described in Figures 5 and 6 of US-A-5,952,983, although other forms of isolation element may be used.
  • the elements 20,21 are of different lengths. The isolation elements generate currents which reduce undesirable coupling between the elements 3,4.
  • the antenna 1 is shown in more detail in Figures 3-8.
  • the isolation elements 20,21 are omitted from Figures 3-8 for clarity.
  • the elements 3,4 are mounted on a printed circuit board (PCB) 22 shown in cross section in Figure 3a.
  • the PCB 22 comprises a dielectric board 23 coated with a copper ground plane layer 24 on the same side of the board 23 as the elements 3,4.
  • the input/output lines 14,1 5 ( Figure 2) are formed by etching a copper layer 25 on the rear side of the board 23.
  • the dipoles 10,12 form part of a contiguous copper layer 36 deposited by electroplating onto a front face 31 of a dielectric board 30 and shaped by etching.
  • the front and rear faces 31 ,32 of the dielectric board are shown in Figures 4 and 5.
  • Each dipole is formed by a pair of collinear strip-like arms 32,33 and 34,35.
  • a feed network is provided in the form of a contiguous copper layer 37 deposited by electroplating onto the rear face 32 of the dielectric board 30 and shaped by etching.
  • a pair of holes 38,39 are formed in the board 30.
  • the walls of the holes 38,39 are plated with copper during the deposition process. This provides an electrical connection between the feed element 40 and the arm 35, and between the feed element 41 and the arm 33, without requiring any soldering.
  • the layer 36 is formed with a cutout 54 to prevent a short-circuit between layer 36 and feed network on board 50, shown in Figure 7.
  • the board 30 is formed with a slot 42 to receive the other board 50 shown in Figures 6 and 7.
  • the dipoles 13,1 1 are formed on the board 50 in a similar manner to the dipoles 10,12 on board 50, and therefore only the differences will be described below.
  • the copper layer 51 is formed with a cutout 52 to prevent a short- circuit between layer 51 and feed network layer 37 on board 30 ( Figure 5).
  • the board 50 is formed with a slot 53 to receive the other board 30.
  • branching points of the feed network are indicated at 60,61 in Figures 2, 5 and 7.
  • the layers 36,51 are electrically connected to the ground plane 24 by solder 62,63,64 shown in Figure 3.
  • the layers 37,55 are connected to the feed network on the opposite face of the board 22 by lines 80,81 which pass through holes (not shown) in the board 22.
  • the fingers are in the form of rectangular copper strips 70,71 etc formed on the outer face 72 of a dielectric board 73 and electrically connected to the ground plane 24.
  • the fingers 70,71 etc. act as quarter wavelength resonant monopoles producing currents which emphasise the horizontal beam component in order to make it more equal to the vertical beam component.
  • the length of the fingers is selected to be approximately equal to one quarter wavelength in the wavelength range of interest.
  • the spacing between the fingers is chosen to avoid propagation of travelling waves along the row of fingers. A spacing less than half a wavelength has been chosen in the embodiment shown.
  • the plated-through holes 38, 39 may be omitted.
  • the feed elements 40, 41 are formed with arms 90, 91 , giving a balun structure in which the feed elements couple capacitively with the dipole arms.
  • the antenna includes a plurality of radiating elements 102, 103 and 104 arranged in an array above reflector 101 .
  • the number of radiating elements will vary depending upon the requirements of each particular application.
  • the radiating elements may be dipoles or patches.
  • the radiating elements in this case are dipole pairs 105 and 106 that are orthogonally disposed and are independently fed.
  • Dipoles 105 and 106 are oriented at + 45° and -45° to vertical (vertical being the axis of the array along which the radiating elements are aligned).
  • the arms of dipoles 105 and 106 are seen to be inclined downwardly towards reflector 101 to increase beam width.
  • Directors 107 and 108 act as polarisation sensitive elements which enhance the horizontally polarised components at angles away from the main beam direction of the antenna. This results in the horizontally polarised components being enhanced at beam directions where they would otherwise be weak whilst the vertically polarised components remain substantially unaffected. This results in the horizontally polarised and vertically polarised components being of substantially equal magnitude at all operational beam directions so as to maintain a 45° slant.
  • the directors 107 and 108 are free standing elements connected at one end to the reflector 107.
  • the directors 107 and 108 are spaced apart from radiating element 102 along the horizontal axis.
  • the length and spacing between the directors are selected using similar considerations to the considerations discussed above with reference to the embodiment of Figures 1 -9. Reflections from the directors and radiating element can mutually cancel.
  • the directors 109 to 1 1 2 operate in a similar manner for radiating elements 103 and 104. Further directors 1 13 to 1 1 6 may be provided. As well as providing polarisation equalisation they may provide improved antenna matching. Isolation elements (not shown) may be provided between radiating elements to provide improved matching.
  • height and width and position of directors 107 to 1 12 may be adjusted to achieve a desired beam pattern for a particular antenna.
  • the present invention thus provides a dual polarised antenna which maintains a substantially constant 45° slant irrespective of antenna beam direction over the operational beam width of the antenna.
  • the use of directors allows greater design freedom in allowing the directors to be moved independently of one another to achieve a desired beam pattern.
  • Use of beam equalising directors can additionally provide improved antenna matching with the directors serving as external matching elements for the radiating element. This is not possible with the slot type construction of the prior art.
  • the antenna of the invention can also enable reflections from the directors to mutually cancel reflections from the radiating element to a greater extent than can be achieved with the slot type construction.

Landscapes

  • Aerials With Secondary Devices (AREA)

Abstract

La présente invention concerne une antenne double polarisée comprenant un réflecteur (101), un ou plusieurs éléments rayonnant (102-104), une pluralité d'éléments directionnels (107-116) s'étendant depuis le réflecteur, ayant des dimensions et des positions permettant de mettre en valeur le faisceau de l'antenne à des angles s'écartant de la direction de faisceau principal. Les éléments directionnels se présentent sous la forme de doigts qui agissent en tant que monopoles résonants de manière à produire des courants d'égalisation de faisceau.
PCT/NZ2001/000191 2000-09-12 2001-09-12 Antenne double polarisee WO2002023669A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2001290379A AU2001290379A1 (en) 2000-09-12 2001-09-12 A dual polarised antenna

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
NZ506906 2000-09-12
NZ50690600 2000-09-12
NZ50821500 2000-11-16
NZ508215 2000-11-16

Publications (1)

Publication Number Publication Date
WO2002023669A1 true WO2002023669A1 (fr) 2002-03-21

Family

ID=26652212

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NZ2001/000191 WO2002023669A1 (fr) 2000-09-12 2001-09-12 Antenne double polarisee

Country Status (2)

Country Link
AU (1) AU2001290379A1 (fr)
WO (1) WO2002023669A1 (fr)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005041357A1 (fr) * 2003-10-10 2005-05-06 Cisco Technology, Inc. Reseau d'antennes comprenant des elements supportes par des ailettes
WO2005053092A1 (fr) * 2003-11-24 2005-06-09 Sandbridge Technologies, Inc. Antennes doublets modifiees a circuits imprimes pour systemes de communication multibande sans fil
WO2005112196A1 (fr) * 2004-05-18 2005-11-24 Telefonaktiebolaget Lm Ericsson (Publ) Antenne reseau dipole tres compacte
US7388556B2 (en) 2005-06-01 2008-06-17 Andrew Corporation Antenna providing downtilt and preserving half power beam width
WO2009068197A1 (fr) * 2007-11-26 2009-06-04 Pilz Gmbh & Co. Kg Antenne à micro-ondes pour la mise en réseau sans fil d'appareils utilisés en automatisation
EP2079132A1 (fr) * 2007-04-27 2009-07-15 Nec Corporation Antenne sectorielle
US7868843B2 (en) 2004-08-31 2011-01-11 Fractus, S.A. Slim multi-band antenna array for cellular base stations
EP2346114A2 (fr) * 2008-09-22 2011-07-20 KMW Inc. Antenne bifréquence à double polarisation pour station de base de communication mobile
KR101192917B1 (ko) 2004-06-03 2012-10-26 아스펜 액퀴지션 코포레이션 무선 다중대역 통신 시스템을 위한 변경 인쇄 다이폴안테나
US8497814B2 (en) 2005-10-14 2013-07-30 Fractus, S.A. Slim triple band antenna array for cellular base stations
EP2738868A1 (fr) * 2012-11-30 2014-06-04 The Boeing Company Ouvertures d'antennes multifonctionnelles à large bande
US9172147B1 (en) 2013-02-20 2015-10-27 The Boeing Company Ultra wide band antenna element
EP3691028A1 (fr) * 2019-02-01 2020-08-05 Nokia Shanghai Bell Co., Ltd. Élément de support permettant de former un réseau d'antennes dipolaires et réseau d'antennes dipolaires

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5039994A (en) * 1984-12-20 1991-08-13 The Marconi Company Ltd. Dipole arrays
US5952983A (en) * 1997-05-14 1999-09-14 Andrew Corporation High isolation dual polarized antenna system using dipole radiating elements
US5966102A (en) * 1995-12-14 1999-10-12 Ems Technologies, Inc. Dual polarized array antenna with central polarization control
WO1999062139A1 (fr) * 1998-05-27 1999-12-02 Kathrein Werke Kg Antenne multigamme a polarisation double
US6034649A (en) * 1998-10-14 2000-03-07 Andrew Corporation Dual polarized based station antenna
US6195063B1 (en) * 1997-05-30 2001-02-27 Kathrein-Werke Kg Dual-polarized antenna system
WO2001031738A1 (fr) * 1999-10-29 2001-05-03 Telefonaktiebolaget Lm Ericsson (Publ) Antenne bipolarisee

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5039994A (en) * 1984-12-20 1991-08-13 The Marconi Company Ltd. Dipole arrays
US5966102A (en) * 1995-12-14 1999-10-12 Ems Technologies, Inc. Dual polarized array antenna with central polarization control
US5952983A (en) * 1997-05-14 1999-09-14 Andrew Corporation High isolation dual polarized antenna system using dipole radiating elements
US6195063B1 (en) * 1997-05-30 2001-02-27 Kathrein-Werke Kg Dual-polarized antenna system
WO1999062139A1 (fr) * 1998-05-27 1999-12-02 Kathrein Werke Kg Antenne multigamme a polarisation double
US6034649A (en) * 1998-10-14 2000-03-07 Andrew Corporation Dual polarized based station antenna
WO2001031738A1 (fr) * 1999-10-29 2001-05-03 Telefonaktiebolaget Lm Ericsson (Publ) Antenne bipolarisee

Cited By (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7280082B2 (en) 2003-10-10 2007-10-09 Cisco Technology, Inc. Antenna array with vane-supported elements
WO2005041357A1 (fr) * 2003-10-10 2005-05-06 Cisco Technology, Inc. Reseau d'antennes comprenant des elements supportes par des ailettes
KR101090592B1 (ko) 2003-11-24 2011-12-08 아스펜 액퀴지션 코포레이션 무선 멀티-밴드 통신 시스템용 개선된 인쇄 다이폴 안테나
WO2005053092A1 (fr) * 2003-11-24 2005-06-09 Sandbridge Technologies, Inc. Antennes doublets modifiees a circuits imprimes pour systemes de communication multibande sans fil
US7034769B2 (en) 2003-11-24 2006-04-25 Sandbridge Technologies, Inc. Modified printed dipole antennas for wireless multi-band communication systems
WO2005112196A1 (fr) * 2004-05-18 2005-11-24 Telefonaktiebolaget Lm Ericsson (Publ) Antenne reseau dipole tres compacte
KR101192917B1 (ko) 2004-06-03 2012-10-26 아스펜 액퀴지션 코포레이션 무선 다중대역 통신 시스템을 위한 변경 인쇄 다이폴안테나
US7868843B2 (en) 2004-08-31 2011-01-11 Fractus, S.A. Slim multi-band antenna array for cellular base stations
US7388556B2 (en) 2005-06-01 2008-06-17 Andrew Corporation Antenna providing downtilt and preserving half power beam width
US10910699B2 (en) 2005-10-14 2021-02-02 Commscope Technologies Llc Slim triple band antenna array for cellular base stations
US10211519B2 (en) 2005-10-14 2019-02-19 Fractus, S.A. Slim triple band antenna array for cellular base stations
US9450305B2 (en) 2005-10-14 2016-09-20 Fractus, S.A. Slim triple band antenna array for cellular base stations
US8754824B2 (en) 2005-10-14 2014-06-17 Fractus, S.A. Slim triple band antenna array for cellular base stations
US8497814B2 (en) 2005-10-14 2013-07-30 Fractus, S.A. Slim triple band antenna array for cellular base stations
EP2079132A1 (fr) * 2007-04-27 2009-07-15 Nec Corporation Antenne sectorielle
EP2079132A4 (fr) * 2007-04-27 2013-01-30 Nec Corp Antenne sectorielle
US8232929B2 (en) 2007-11-26 2012-07-31 Pilz Gmbh & Co. Kg Microwave antenna for wireless networking of devices in automation technology
WO2009068197A1 (fr) * 2007-11-26 2009-06-04 Pilz Gmbh & Co. Kg Antenne à micro-ondes pour la mise en réseau sans fil d'appareils utilisés en automatisation
JP2012503405A (ja) * 2008-09-22 2012-02-02 ケーエムダブリュ・インコーポレーテッド 移動通信基地局用二重帯域二重偏波アンテナ
EP2346114A4 (fr) * 2008-09-22 2013-07-24 Kmw Inc Antenne bifréquence à double polarisation pour station de base de communication mobile
EP2346114A2 (fr) * 2008-09-22 2011-07-20 KMW Inc. Antenne bifréquence à double polarisation pour station de base de communication mobile
US9287632B2 (en) 2012-11-30 2016-03-15 The Boeing Company Structural wideband multifunctional apertures
EP2738868A1 (fr) * 2012-11-30 2014-06-04 The Boeing Company Ouvertures d'antennes multifonctionnelles à large bande
US9172147B1 (en) 2013-02-20 2015-10-27 The Boeing Company Ultra wide band antenna element
EP3691028A1 (fr) * 2019-02-01 2020-08-05 Nokia Shanghai Bell Co., Ltd. Élément de support permettant de former un réseau d'antennes dipolaires et réseau d'antennes dipolaires
CN111525229A (zh) * 2019-02-01 2020-08-11 上海诺基亚贝尔股份有限公司 用于形成偶极天线阵列的支撑构件以及偶极天线阵列
CN111525229B (zh) * 2019-02-01 2021-09-10 上海诺基亚贝尔股份有限公司 用于形成偶极天线阵列的支撑构件以及偶极天线阵列
US11228117B2 (en) 2019-02-01 2022-01-18 Nokia Shanghai Bell Co., Ltd. Support member for forming an array of dipole antennas, and an array of dipole antennas

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