EP2058901A1 - Antenne mit reflektierender Störstelle - Google Patents

Antenne mit reflektierender Störstelle Download PDF

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Publication number
EP2058901A1
EP2058901A1 EP08168505A EP08168505A EP2058901A1 EP 2058901 A1 EP2058901 A1 EP 2058901A1 EP 08168505 A EP08168505 A EP 08168505A EP 08168505 A EP08168505 A EP 08168505A EP 2058901 A1 EP2058901 A1 EP 2058901A1
Authority
EP
European Patent Office
Prior art keywords
antenna
reflecting means
radiating elements
reflecting
reflector
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.)
Granted
Application number
EP08168505A
Other languages
English (en)
French (fr)
Other versions
EP2058901B1 (de
Inventor
Jean-Pierre Harel
Patrick Lecam
Jérôme Plet
Marco Kunze
Warren F. Hunt
Selina Qu
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.)
Alcatel Lucent SAS
Original Assignee
Alcatel Lucent SAS
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Filing date
Publication date
Application filed by Alcatel Lucent SAS filed Critical Alcatel Lucent SAS
Publication of EP2058901A1 publication Critical patent/EP2058901A1/de
Application granted granted Critical
Publication of EP2058901B1 publication Critical patent/EP2058901B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • 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

Definitions

  • the present invention relates to a telecommunication antenna, used in particular for the base stations of the cellular communication networks (GSM, UMTS).
  • GSM Global System for Mobile communications
  • UMTS cellular communication networks
  • Such an antenna is formed of networks of radiating elements slightly spaced.
  • the invention relates in particular to the reflecting means which is provided with this antenna.
  • a telecommunications antenna transmits and receives radio waves at frequencies specific to a telecommunications system operated by this antenna.
  • an antenna for the UMTS system uses frequency waves in the band 1710 to 2170 MHz.
  • a base station has an antenna array and feeds each antenna with frequency waves included in the band operated by it.
  • the distance between the antennas is short, which has the consequence that each antenna has an influence on the adjacent antenna.
  • the document US 5710569 There is the problem of minimizing the lateral radiation of an antenna, a source of interference with neighboring antennas, modifying the width of the horizontal beam and improving the front-to-back ratio.
  • This document describes an antenna comprising aligned dipoles fixed on the flat base of a reflector with edges folded upwards. Choke reflectors are arranged in the space between the dipole and the lateral fold of the reflector, of which they are distinct, so as to form a screen on either side of the row of dipoles. These traps are composed of metal sheets folded in L and fixed on the flat base of the reflector supporting the dipoles. They can be moved in a horizontal direction so as to move closer to or away from the dipole alignment, in order to modify the characteristics of the antenna.
  • the document EP-0 973 231 The aim is to minimize the side lobes of an antenna, a source of interference with adjacent antennas, and to obtain the characteristics of a bi-polarization with a single antenna. This document also mentions the possibility of controlling the insulation by adjusting the position of the traps.
  • This document describes an antenna comprising radiating elements fixed on the flat part of a reflector having folded edges downwards. Two longitudinally movable "choke reflectors" are arranged along the elements radiating on the flat part of the reflector. Transverse traps are further placed between the radiating elements perpendicular to the lateral traps.
  • trap is given to simple angles forming two parallel flat surfaces flanking closer aligned radiating elements. These traps have the function of modifying the opening value of the antenna.
  • the authors of these documents seek a control of the nominal value of the opening of the antenna by arranging the traps in the central zone of the antenna, closer to the dipoles.
  • the present invention aims to improve the stability of the beamwidth in the horizontal plane of a radiofrequency antenna. Another object of the invention is to improve the performance of this cross-polarized antenna in the main axis and at an angle of ⁇ 60 ° to the axis of the antenna.
  • the object of the present invention is an antenna comprising an array of aligned radiating elements, a first reflecting means comprising a flat central part on which the radiating elements are arranged and edges folded longitudinally on either side of the alignment. elements, and at least a second reflecting means.
  • the second reflecting means is a reflecting trap disposed outside the space separating the radiating elements from the folded edge of the first reflecting means, and it is separated from the first reflecting means by a layer of dielectric material so as to be connected by capacitive coupling to the first reflecting means.
  • the second reflecting means according to the invention is disposed outside the folded edges of the first reflecting means of the antenna, outside the immediate zone of radiation of the elements, which consequently produces the stabilization of the opening value. of the antenna and simultaneously improves the cross-polarization parameters.
  • the second reflecting means according to the invention is connected to the first reflecting means by indirect electrical coupling or capacitive coupling. This represents an improvement of the prior art: simple assembly and absence of intermodulation constraints resulting from a bad assembly between parts.
  • the second reflecting means is separated from the first reflecting means by a layer of dielectric material. Thus the parts connected to the earth are not in direct contact.
  • the reflecting trap according to the invention does not act on the nominal value of the opening of the antenna, but has the effect of improving the stability of this value.
  • the invention makes it possible to improve the cross polarization parameters of the antenna, whereas the prior art only describes vertically polarized antennas.
  • the value of the insulation is not influenced by the presence of traps because they are placed too far away from the radiating elements.
  • the second reflecting means is a U-shaped folded metal sheet, the outer face of one of the branches of the U cooperating with the outer face of a folded edge of the first means. reflective.
  • the branches of the U are of unequal lengths.
  • the metal sheet is aluminum.
  • the second reflecting means is disposed on at least a part of the total length of the antenna.
  • the trap is applied against the outer face of the folded edges of the first reflecting means, on certain portions of the length of the first reflecting means.
  • the reflective trap may also cover the entire length of the first reflective means.
  • the antenna 1 comprises elements 2, such as dipoles, radiating a radiofrequency signal, aligned along a longitudinal main axis X-X '.
  • the antenna 1 also comprises a reflecting means 3, connected to the ground, composed of a flat part 4 and side edges 5 folded upwards, parallel to the axis XX 'on each side of the row of radiating elements 2.
  • the radiating elements 2 are fixed on the flat part 4 of the reflector 3.
  • the transverse walls 6 separate the radiating elements 2, and rest on the lateral edges 5 of the reflector 3.
  • the radiating elements 2 are powered electrically by lines 7 connected to connectors 8 carried by the transverse end walls 9.
  • the antenna 1 further comprises a supply network of the radiating elements 2 (not shown).
  • the antenna 1 comprises reflective traps 10 formed of a U-shaped folded aluminum foil placed longitudinally outside the reflector 3, outside the zone of proximity of the radiating elements 2.
  • the outer face 11 of one of the branches of the U is contiguous to the outer face 12 of the lateral edge 5 of the reflector 3, as shown in FIGS. Figures 2a and 2b .
  • the U branch of the trap 10 is separated by a layer 13 of a dielectric material from the lateral edge 5 of the reflector 3 to which it is contiguous.
  • the capacitive coupling equivalent to a short-circuit for radio frequencies, which is made between the lower portion 14 of the reflecting trap 10 and the lower angle 15 of the reflector 3 leads to an open circuit at the upper edge 16 of the reflector. 3.
  • the line 19, of an unwound length of the order of a half-wavelength is a quarter-wave transformer formed by the two opposite conductors, respectively the inside of the trap 10 and the outside of the reflector 3.
  • the other U-leg of the trap 10, which is not contiguous to the reflector 3 has a length 20 on the order of a quarter of the wavelength in this case.
  • the radiating elements 2 are further protected by a housing 21.
  • each row has a reflector 31, formed of a flat base 32, 32 ' provided with folded lateral edges 33, 33' flanking each row of radiating elements 30. Traps 34, 34 ' are contiguous to the outer face 35, 35 ' edges 33, 33' of each of the reflectors 31, 31 '. Thus each row of radiating elements 30 has its own reflector 31, 31 'framed by two traps 34, 34'. The two rows of radiating elements 30 are further protected by a common housing 36 .
  • an antenna 40 having two rows of radiating elements 41 fixed on the flat portion 42, 42 ' of their respective reflectors 43, 43' comprising longitudinal edges 44, 44 ' folded. Traps 45, 45 ' are arranged on the outer side of the folded edges 44, 44' , on only a part of the length of the antenna 40.
  • a dual polarized antenna has two + 45 ° and -45 ° identified ports that correspond to the two antenna connectors.
  • the figure 5 shows the variation of the aperture W at -3 dB of the beam of an antenna of the prior art for one of the two ports at -45 ° (curve 50 ).
  • the figure 6 shows the variation of the aperture W at -3 dB of the beam of an antenna comprising two traps according to one embodiment of the invention for one of the two ports at -45 ° (curve 60 ) .
  • the figure 7 shows the evolution of the cross polarization P of an antenna of the prior art in the sector at +/- 60 ° of the main axis of the antenna for one of the two ports at -45 ° (curve 70 ).
  • the figure 8 shows the evolution of the crossed polarization P of an antenna comprising two traps according to one embodiment of the invention in the sector at +/- 60 ° of the main axis of the antenna for one of the two ports at -45 ° (curve 80 ).

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Aerials With Secondary Devices (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Support Of Aerials (AREA)
  • Glass Compositions (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
EP08168505A 2007-11-07 2008-11-06 Antenne mit reflektierender Störstelle Active EP2058901B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0758847A FR2923323B1 (fr) 2007-11-07 2007-11-07 Antenne a piege reflechissant

Publications (2)

Publication Number Publication Date
EP2058901A1 true EP2058901A1 (de) 2009-05-13
EP2058901B1 EP2058901B1 (de) 2010-07-14

Family

ID=39446115

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08168505A Active EP2058901B1 (de) 2007-11-07 2008-11-06 Antenne mit reflektierender Störstelle

Country Status (5)

Country Link
US (1) US8928548B2 (de)
EP (1) EP2058901B1 (de)
AT (1) ATE474344T1 (de)
DE (1) DE602008001767D1 (de)
FR (1) FR2923323B1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011085650A1 (zh) * 2010-01-18 2011-07-21 华为技术有限公司 一种抛物面天线
WO2011026034A3 (en) * 2009-08-31 2015-11-19 Andrew Llc Modular type cellular antenna assembly
CN105706295A (zh) * 2013-07-29 2016-06-22 布盖斯电信公司 包括成型反射器的光学透明的平板天线组件

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US8115696B2 (en) * 2008-04-25 2012-02-14 Spx Corporation Phased-array antenna panel for a super economical broadcast system
SE533885C2 (sv) * 2009-04-17 2011-02-22 Powerwave Technologies Sweden Antennanordning
US9634373B2 (en) 2009-06-04 2017-04-25 Ubiquiti Networks, Inc. Antenna isolation shrouds and reflectors
US8836601B2 (en) * 2013-02-04 2014-09-16 Ubiquiti Networks, Inc. Dual receiver/transmitter radio devices with choke
US9496620B2 (en) 2013-02-04 2016-11-15 Ubiquiti Networks, Inc. Radio system for long-range high-speed wireless communication
WO2012011796A1 (en) * 2010-07-19 2012-01-26 Laird Technologies, Inc. Multiple-antenna systems with enhanced isolation and directivity
US8823598B2 (en) * 2011-05-05 2014-09-02 Powerwave Technologies S.A.R.L. Reflector and a multi band antenna
CN103531919B (zh) * 2012-07-05 2016-08-10 中国电信股份有限公司 四极化天线和四极化多天线阵
US20140111396A1 (en) * 2012-10-19 2014-04-24 Futurewei Technologies, Inc. Dual Band Interleaved Phased Array Antenna
US20160218406A1 (en) 2013-02-04 2016-07-28 John R. Sanford Coaxial rf dual-polarized waveguide filter and method
US9397820B2 (en) 2013-02-04 2016-07-19 Ubiquiti Networks, Inc. Agile duplexing wireless radio devices
US9543635B2 (en) 2013-02-04 2017-01-10 Ubiquiti Networks, Inc. Operation of radio devices for long-range high-speed wireless communication
US9531067B2 (en) 2013-02-08 2016-12-27 Ubiquiti Networks, Inc. Adjustable-tilt housing with flattened dome shape, array antenna, and bracket mount
BR112016007701B1 (pt) 2013-10-11 2023-01-31 Ubiquiti Inc Método para controlar a recepção de um rádio de banda larga sem fio
WO2015134755A2 (en) 2014-03-07 2015-09-11 Ubiquiti Networks, Inc. Devices and methods for networked living and work spaces
WO2015134753A1 (en) 2014-03-07 2015-09-11 Ubiquiti Networks, Inc. Cloud device identification and authentication
US9368870B2 (en) 2014-03-17 2016-06-14 Ubiquiti Networks, Inc. Methods of operating an access point using a plurality of directional beams
WO2015153717A1 (en) 2014-04-01 2015-10-08 Ubiquiti Networks, Inc. Antenna assembly
CN106233797B (zh) 2014-06-30 2019-12-13 优倍快网络公司 无线电设备对准工具及方法
DE102014011514A1 (de) 2014-07-31 2016-02-04 Kathrein-Werke Kg Kapazitiv geschmiertes Gehäuse, insbesondere kapazitiv geschmiertes Komponenten-Gehäuse für eine Antenneneinrichtung
WO2016055126A1 (en) * 2014-10-10 2016-04-14 Huawei Technologies Co.,Ltd Spacer for reducing pim in an antenna
US10148012B2 (en) * 2015-02-13 2018-12-04 Commscope Technologies Llc Base station antenna with dummy elements between subarrays
WO2017044924A1 (en) 2015-09-11 2017-03-16 Ubiquiti Networks, Inc. Compact public address access point apparatuses
GB2573209A (en) * 2016-03-17 2019-10-30 Cambium Networks Ltd Antenna array assembly
US10431877B2 (en) * 2017-05-12 2019-10-01 Commscope Technologies Llc Base station antennas having parasitic coupling units
CN110915062B (zh) 2017-05-17 2021-01-26 康普技术有限责任公司 具有带射频扼流器的反射器组件的基站天线
DE102017111987A1 (de) * 2017-05-31 2018-12-06 Mbda Deutschland Gmbh Vorrichtung zum Reduzieren von Störeinflüssen bei Antennen
WO2020086303A1 (en) 2018-10-23 2020-04-30 Commscope Technologies Llc Base station antennas having rf reflectors therein with integrated backside multi-choke assemblies
WO2020190863A1 (en) 2019-03-21 2020-09-24 Commscope Technologies Llc Base station antennas having parasitic assemblies for improving cross-polarization discrimination performance
EP4356484A1 (de) * 2021-06-16 2024-04-24 CommScope Technologies LLC Basisstationsantennen mit einem oder mehreren aktiven antennenmodulen sowie zugehörige vorrichtungen und verfahren

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US5710569A (en) 1995-03-03 1998-01-20 Ace Antenna Corporation Antenna system having a choke reflector for minimizing sideward radiation
EP0895303A1 (de) * 1997-07-28 1999-02-03 Alcatel Richtantennensystem mit gekreuzter Polarisation
WO2000001032A1 (en) * 1998-06-26 2000-01-06 Allgon Ab Dual band antenna
EP0973231A2 (de) 1998-07-06 2000-01-19 Ace Technology Dualpolarisierte Richtantenne mit Drosselreflektoren zur Minimisierung von Seitenkeulen

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US5966102A (en) * 1995-12-14 1999-10-12 Ems Technologies, Inc. Dual polarized array antenna with central polarization control
US6414636B1 (en) * 1999-08-26 2002-07-02 Ball Aerospace & Technologies Corp. Radio frequency connector for reducing passive inter-modulation effects
US7358922B2 (en) * 2002-12-13 2008-04-15 Commscope, Inc. Of North Carolina Directed dipole antenna
EP1566857B1 (de) * 2004-02-20 2008-03-26 Alcatel Lucent Dualpolarisiertes Antennenmodul
KR101017670B1 (ko) * 2007-10-05 2011-02-25 주식회사 에이스테크놀로지 초크 부재를 가지는 안테나

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5710569A (en) 1995-03-03 1998-01-20 Ace Antenna Corporation Antenna system having a choke reflector for minimizing sideward radiation
EP0895303A1 (de) * 1997-07-28 1999-02-03 Alcatel Richtantennensystem mit gekreuzter Polarisation
WO2000001032A1 (en) * 1998-06-26 2000-01-06 Allgon Ab Dual band antenna
EP0973231A2 (de) 1998-07-06 2000-01-19 Ace Technology Dualpolarisierte Richtantenne mit Drosselreflektoren zur Minimisierung von Seitenkeulen

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011026034A3 (en) * 2009-08-31 2015-11-19 Andrew Llc Modular type cellular antenna assembly
US9590317B2 (en) 2009-08-31 2017-03-07 Commscope Technologies Llc Modular type cellular antenna assembly
US11652278B2 (en) 2009-08-31 2023-05-16 Commscope Technologies Llc Modular type cellular antenna assembly
WO2011085650A1 (zh) * 2010-01-18 2011-07-21 华为技术有限公司 一种抛物面天线
CN105706295A (zh) * 2013-07-29 2016-06-22 布盖斯电信公司 包括成型反射器的光学透明的平板天线组件

Also Published As

Publication number Publication date
US8928548B2 (en) 2015-01-06
US20100013729A1 (en) 2010-01-21
ATE474344T1 (de) 2010-07-15
DE602008001767D1 (de) 2010-08-26
FR2923323A1 (fr) 2009-05-08
FR2923323B1 (fr) 2011-04-08
EP2058901B1 (de) 2010-07-14

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