EP2218119A1 - Reflecteur a etage variable destine a une antenne commandee par largeur de faisceau a azimut - Google Patents

Reflecteur a etage variable destine a une antenne commandee par largeur de faisceau a azimut

Info

Publication number
EP2218119A1
EP2218119A1 EP08847232A EP08847232A EP2218119A1 EP 2218119 A1 EP2218119 A1 EP 2218119A1 EP 08847232 A EP08847232 A EP 08847232A EP 08847232 A EP08847232 A EP 08847232A EP 2218119 A1 EP2218119 A1 EP 2218119A1
Authority
EP
European Patent Office
Prior art keywords
reflector
antenna
radiators
variable
configuration
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
EP08847232A
Other languages
German (de)
English (en)
Other versions
EP2218119A4 (fr
EP2218119B1 (fr
Inventor
Gang Yi Deng
Bjorn Lindmark
Matthew J. Hunton
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.)
Powerwave Technologies Inc
Original Assignee
Powerwave Technologies Inc
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 Powerwave Technologies Inc filed Critical Powerwave Technologies Inc
Publication of EP2218119A1 publication Critical patent/EP2218119A1/fr
Publication of EP2218119A4 publication Critical patent/EP2218119A4/fr
Application granted granted Critical
Publication of EP2218119B1 publication Critical patent/EP2218119B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • H01Q3/01—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 shape of the antenna or antenna system
    • 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 in general to communication systems and components. More particularly the present invention is directed to antennas and antenna arrays employed in wireless communications systems.
  • Modern wireless antenna implementations generally include a plurality of radiating elements that may be arranged over a reflector plane defining a radiated (and received) signal beam width and azimuth scan angle.
  • Azimuth antenna beam width can be advantageously modified by varying the amplitude and phase of an RF signal applied to respective radiating elements.
  • Azimuth antenna beam width has been conventionally defined by Half Power Beam Width (HPBW) of the azimuth beam relative to a bore sight of such antenna array.
  • HPBW Half Power Beam Width
  • radiating element positioning is important to the overall beam width control as such antenna systems rely on accuracy of amplitude and phase angle of RF signal supplied to each radiating element.
  • the present invention provides an antenna for a wireless network comprising a first generally planar reflector having a first plurality of radiators mounted thereon and a second generally planar reflector having a second plurality of radiators mounted thereon, the second generally planar reflector configured in a variable partial overlapping relation with the first generally planar reflector. At least one of the first and second generally planar reflectors is movable relative to the other reflector in a direction generally parallel to the reflector plane and the radiators mounted on the reflectors are reconfigurable from a first configuration where the radiators are all aligned to a second configuration where the radiators are staggered relative to each other.
  • the first and second plurality of radiators comprise radiating elements extending perpendicular to the plane of the respective reflectors. At least one of the first and second reflectors has a comb-like structure having a plurality of notched portions configured in alignment with the radiators on the other reflector.
  • the first and second plurality of radiators are arranged in first and second columns respectively on the first and second reflectors.
  • the first and second plurality of radiators in each of the first and second columns are preferably equally spaced along the length direction of the columns. In the first configuration the first and second columns may be aligned along a centerline and the first and second plurality of radiators are equally spaced apart a distance Vs.
  • the first and second columns are not aligned and the first and second plurality of radiators are spaced apart a stagger distance SD which is greater than Vs. More specifically, in the second configuration the first and second columns may be spaced in opposite directions from the centerline by a distance HSi and HS 2 respectively and the stagger distance SD of the radiators is given by
  • the operating frequency of the antenna may be between 1.7 GHz and 2.2 GHz and the spacing Vs is between about 75 to 125 mm.
  • the spacing HSi and HS2 may be variable between 0 and 40 mm.
  • the present invention provides a variable azimuth beam width antenna comprising a reflector structure, the reflector structure comprising first and second generally planar reflector panels each having plural alternating extensions and notched portions forming a comb shape, wherein the first and second generally planar reflector panels are interdigitated to form a generally rectangular shape for the reflector structure and wherein one or both of the panels are movable relative to the other to provide a variable overlap.
  • the antenna further comprises a first plurality of radiators mounted on the first reflector panel in the plural extensions thereof and a second plurality of radiators mounted on the second reflector panel in the plural extensions thereof.
  • Signal azimuth beam width is variable based on variable relative positioning of the first plurality of radiators and the second plurality of radiators as the first and second reflector panel overlap is varied.
  • the reflector structure has a variable width as the first and second reflector panel overlap is varied.
  • the operating frequency of the antenna may be between 1.7 GHz and 2.2 GHz and the reflector structure width is variable between about 120 mm and 200 mm.
  • the beam width of the antenna may be variable between about 100 degrees and 47 degrees.
  • the first plurality of radiators mounted on the first reflector panel are preferably arranged in a first column aligned perpendicular to the azimuth direction and the second plurality of radiators mounted on the second reflector panel are preferably arranged in a second column also aligned perpendicular to the azimuth direction and the spacing of the first and second columns is varied as the reflector panel overlap is varied.
  • the present invention provides a method of adjusting signal beam width in an antenna having first and second generally comb shaped planar reflector panels each having a plurality of radiators mounted thereon.
  • the method comprises adjusting the position of at least one of the panels by moving the panel in a direction generally parallel to the plane of the reflector to a first configuration having plural interdigitated first and second radiators on the first and second reflector panels with a first spacing to provide a first signal beam width.
  • the method further comprises adjusting the position of at least one of the panels by moving the panel in a direction generally parallel to the plane of the reflector to a second configuration having interdigitated first and second radiators with a second different spacing to provide a second signal beam width.
  • the beam width of the antenna may be variable between about 100 degrees and 47 degrees.
  • the first and second reflector panels together preferably form a rectangular reflector structure having a width which is variable, for example between about 120 mm and 200 mm.
  • Figure 1 is a front view of a variable reflector stagger antenna array in accordance with a preferred embodiment of the invention in wide azimuth beam width setting.
  • Figure 2 is a front view of a variable reflector stagger antenna array in accordance with a preferred embodiment of the invention in narrow azimuth beam width setting.
  • Figure 3A provides cross sectional view details along A-A and B-B datum detailing the motion of a dual polarized antenna element corresponding to wide azimuth beam width setting.
  • Figure 3B provides cross sectional view details along A1 -A1 and B1 -B1 datum detailing the motion of a dual polarized antenna element corresponding to narrow azimuth beam width setting.
  • Figure 4 is the simulated azimuth radiation pattern of an antenna in accordance with the invention configured for wide azimuth beam width (97.6 ⁇ HPBW ⁇ 99.7deg), minimum reflector stagger +/- 0.00mm.
  • Figure 5 is the simulated azimuth radiation pattern of an antenna in accordance with the invention configured for intermediate azimuth beam width (73.8 ⁇ HPBW ⁇ 79.8deg), reflector stagger +/- 20.0mm.
  • Figure 6 is the simulated azimuth radiation pattern of an antenna in accordance with the invention configured for intermediate azimuth beam width (46.9 ⁇ HPBW ⁇ 57deg), reflector stagger +/- 40.0mm.
  • the present invention provides an azimuth beam width variable antenna array for a wireless network system and related methods of beam width control.
  • Figure 1 shows a front view of a dual polarization, staggerable reflector antenna array, 100, according to an exemplary implementation, which utilizes twin element staggerable reflector plates or panels 105a and 105b. As may be seen these panels each have a comb shape which together form an interdigitated structure. More specifically, the two reflector plates 105a and 105b are oriented in a vertical orientation (Z-dimension) of the antenna array together forming a rectangular shaped reflector 105. Reflector plates 105a and 105b may, for example, consist of electrically conductive plates suitable for use with Radio Frequency (RF) signals. Further, reflector plates 105a and 105b when combined together are shown as a featureless rectangle, but in actual practice additional details such as outer perimeter augmentation (not shown) may be added to aid reflector performance and HPBW control.
  • RF Radio Frequency
  • an antenna array, 100 contains a plurality of RF radiating (110, 120, 130, 140 -to- 220) elements preferably arranged both vertically and horizontally along operationally defined vertical axis PO which corresponds to a minimum stagger distance O1.
  • RF radiating (110, 120, 130, 140 -to- 220) elements are preferably equidistantly spaced a distance Vs as shown; alternatively unequal elements groupings and offset vertical arrangements can also be employed.
  • the illustrated embodiment utilizes 12 radiating elements, however it shall be understood that the number of radiating elements can be greater or fewer depending on performance requirements and other implementation requirements.
  • the first group of RF radiating (120, 140, 160, 180, 200, and 220) elements are rigidly attached (122, 142, 162, 182, 202, and 222) to the left side reflector plate 105a along P1 axis common to the reflector plate 105a.
  • the second group of RF radiating (110, 130, 150, 170, 190, and 210) elements are rigidly attached (112, 132, 152, 172, 192, and 212) to the right side reflector plate 105b along P2 axis common to the reflector plate 105b.
  • Both left 105a and right reflector plates utilize a comb style shape with extensions and notched portions which are interdigitated to allow for interference free radiating element positioning while providing a substantially homogenous reflector plane.
  • left reflector plate 105a is set to overlay right reflector plate 105b.
  • the two reflector plates 105a and 105b are equidistantly movable about vertical center axis PO, in opposite directions having identical lateral displacement HS1 & HS2.
  • One skilled in the art can readily implement a simple electro-mechanical actuator (not shown) that can provide such controlled lateral movement.
  • unequal shifting about center axis PO is possible, such that displacement
  • Such reflector configuration corresponds to the narrowest possible azimuth HPBW (see Table 1 ).
  • Inter-radiating element spacing SD is given by:
  • SD VHS 2 +VS 2
  • VS dimension is defined by the overall length of the reflector 105 plane which defines the effective antenna aperture.
  • RF radiator, 105 together with a plurality of folded dipole (110, 120, 130, 140 -to- 250) radiating elements forms an antenna array useful for RF signal transmission and reception.
  • alternative radiating elements such as taper slot, horn, aperture coupled patches (APC), etc., can be used as well.
  • a cross section datum A-A and B-B will be used to detail constructional and operational aspects relating to reflector plates 105a and 105b relative movement with respect to each other. Drawing details of A-A and B-B datum can be found in Figure 3A.
  • Minimum reflector overlap O1 dimension is preferably not 0mm, but has an additional mechanical safety margin to prevent reflector planes from disengaging each other at minimum overlap settings.
  • Figure 3B provides cross sectional views along A1 -A1 and B1 -B1 datum of Figure 2.
  • Figures 4, 5, and 6 provide azimuth radiation patterns for different stagger settings.
  • Preferred dimensions for a 1.7 GHz to 2.2 GHz embodiment are shown in Table 1. Other frequency ranges and dimensions are also possible, however.

Landscapes

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

Abstract

L'invention concerne un réseau d'antennes (100) à réflecteur à étages commandé de manière variable. Ce réseau d'antennes (100) contient plusieurs éléments rayonnants entraînés (110, 120) qui sont localisés de telle sorte que chaque élément rayonnant, ou groupe d'éléments est mobile de façon orthogonale par rapport à un axe vertical principal. Cette configuration offre une variation commandée du diagramme de rayonnement en azimut du réseau d'antennes sans rayonnement de lobe latéral excessif sur une gamme complète de réglages.
EP08847232A 2007-11-09 2008-11-06 Reflecteur a etage variable destine a une antenne commandee par largeur de faisceau a azimut Not-in-force EP2218119B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US263507P 2007-11-09 2007-11-09
PCT/US2008/082697 WO2009061966A1 (fr) 2007-11-09 2008-11-06 Réflecteur à étage variable destiné à une antenne commandée par largeur de faisceau à azimut

Publications (3)

Publication Number Publication Date
EP2218119A1 true EP2218119A1 (fr) 2010-08-18
EP2218119A4 EP2218119A4 (fr) 2011-05-25
EP2218119B1 EP2218119B1 (fr) 2012-07-25

Family

ID=40626178

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08847232A Not-in-force EP2218119B1 (fr) 2007-11-09 2008-11-06 Reflecteur a etage variable destine a une antenne commandee par largeur de faisceau a azimut

Country Status (2)

Country Link
EP (1) EP2218119B1 (fr)
WO (1) WO2009061966A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010039019B4 (de) 2010-08-06 2014-08-07 Technische Universität Dresden Antikörper gegen 6-sulfo LacNAc positive humane dendritische Zellen und deren Verwendung
CN206806508U (zh) * 2017-04-07 2017-12-26 深圳市景程信息科技有限公司 可重构的双极化宽频天线
CN206673107U (zh) * 2017-04-07 2017-11-24 深圳市景程信息科技有限公司 利用微带线馈电的三模宽带阶梯型缝隙天线
US11611143B2 (en) 2020-03-24 2023-03-21 Commscope Technologies Llc Base station antenna with high performance active antenna system (AAS) integrated therein
CN115693182A (zh) * 2020-03-24 2023-02-03 康普技术有限责任公司 具有成角度馈电柄的辐射元件和包括该辐射元件的基站天线
MX2022011871A (es) 2020-03-24 2022-12-06 Commscope Technologies Llc Antenas de estación base con un módulo de antena activa y dispositivos y métodos relacionados.

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04122102A (ja) * 1990-09-12 1992-04-22 Omron Corp 平面アンテナ
US20070205952A1 (en) * 2006-03-03 2007-09-06 Gang Yi Deng Broadband single vertical polarized base station antenna
US20080246681A1 (en) * 2007-04-06 2008-10-09 Gang Yi Deng Dual stagger off settable azimuth beam width controlled antenna for wireless network
WO2008156633A2 (fr) * 2007-06-13 2008-12-24 Powerwave Technologies, Inc. Antenne commandée par largeur de faisceau à azimut décalable à triple étage pour un réseau sans fil

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100270888B1 (ko) 1998-04-08 2000-12-01 윤종용 노운 굿 다이 제조장치
US6323823B1 (en) * 2000-07-17 2001-11-27 Metawave Communications Corporation Base station clustered adaptive antenna array
US7173572B2 (en) * 2002-02-28 2007-02-06 Andrew Corporation Dual band, dual pole, 90 degree azimuth BW, variable downtilt antenna
US7038621B2 (en) * 2003-08-06 2006-05-02 Kathrein-Werke Kg Antenna arrangement with adjustable radiation pattern and method of operation
US7145515B1 (en) * 2004-01-02 2006-12-05 Duk-Yong Kim Antenna beam controlling system for cellular communication
FR2896705B1 (fr) 2006-01-30 2008-12-05 Commissariat Energie Atomique Procede de separation en milieu aqueux d'au moins un element actinide d'elements lanthanides par complexation et filtration membranaire

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04122102A (ja) * 1990-09-12 1992-04-22 Omron Corp 平面アンテナ
US20070205952A1 (en) * 2006-03-03 2007-09-06 Gang Yi Deng Broadband single vertical polarized base station antenna
US20080246681A1 (en) * 2007-04-06 2008-10-09 Gang Yi Deng Dual stagger off settable azimuth beam width controlled antenna for wireless network
WO2008156633A2 (fr) * 2007-06-13 2008-12-24 Powerwave Technologies, Inc. Antenne commandée par largeur de faisceau à azimut décalable à triple étage pour un réseau sans fil

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2009061966A1 *

Also Published As

Publication number Publication date
WO2009061966A1 (fr) 2009-05-14
EP2218119A4 (fr) 2011-05-25
EP2218119B1 (fr) 2012-07-25

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