EP0916169A1 - Systeme d'antenne - Google Patents

Systeme d'antenne

Info

Publication number
EP0916169A1
EP0916169A1 EP98930740A EP98930740A EP0916169A1 EP 0916169 A1 EP0916169 A1 EP 0916169A1 EP 98930740 A EP98930740 A EP 98930740A EP 98930740 A EP98930740 A EP 98930740A EP 0916169 A1 EP0916169 A1 EP 0916169A1
Authority
EP
European Patent Office
Prior art keywords
plane
radiator
slots
reflector
antenna arrangement
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
EP98930740A
Other languages
German (de)
English (en)
Other versions
EP0916169B1 (fr
Inventor
Roland Gabriel
Max GÖTTL
Georg Klinger
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.)
Kathrein SE
Original Assignee
Kathrein Werke KG
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 Kathrein Werke KG filed Critical Kathrein Werke KG
Publication of EP0916169A1 publication Critical patent/EP0916169A1/fr
Application granted granted Critical
Publication of EP0916169B1 publication Critical patent/EP0916169B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
    • H01Q19/10—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • 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
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
    • H01Q1/521—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas
    • H01Q1/523—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas between antennas of an array
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • 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
    • 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
    • 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 invention relates to an antenna arrangement for emitting and receiving electromagnetic waves, in particular a dual-polarized antenna according to the preamble of claim 1.
  • Radiator arrangements which are horizontally or vertically polarized, for example in the form of dipoles arranged in the polarization plane, slots arranged transversely thereto or in the form of planar radiator elements, such as patch radiators, are well known.
  • the dipoles are arranged horizontally.
  • Corresponding radiator arrangements in the form of slots are arranged vertically in this case.
  • Radiator arrangements are also known which can be used for the simultaneous emission and reception of waves with two orthogonal polarizations, which are also referred to below as dual-polarized antennas.
  • Corresponding radiator arrangements gene for example from several elements in the form of dipoles, slots or planar emitter elements, are from EP 0 685 909 A1 or from the previous publication "antennas", Part 2, bibliographisches Institut Mannheim- / Vienna / Zurich, 1970, pages 47 to 50 known.
  • radiator arrangements are usually arranged in front of a reflecting surface, the so-called reflector.
  • an oblique-angled arrangement of dual polarized radiator arrangements for example + 45 ° or -45 °, has proven to be favorable for mobile radio applications, so that each system emits a linear polarization of + 45 ° or -45 ° and both are in turn orthogonal to one another.
  • radiators at +/- 45 ° polarization, this polarization has this exact alignment only in the main beam direction.
  • the orientation of the polarization will deviate more or less from the desired + 45 ° or -45 ° in the event of a large angle deviation from the main beam direction and is therefore dependent on the direction of propagation.
  • the radiator type is, for example, a dipole aligned at + 45 ° or -45 °, this is clearly understandable. Since only the projection of the dipole appears in the respective radiation direction, the polarization, for example perpendicular to the main beam direction, is almost vertical.
  • a disadvantage of antennas with oblique polarization, in particular with an orientation of the polarization plane of + 45 ° and -45 °, is that it is not possible with simple means to realize half-widths of more than 85 ° -90 ° and still it it is not possible to achieve an almost constant orientation of the polarization with the previously known means.
  • a circularly polarized antenna arrangement has become known from the generic publication US Pat. No. 5,481,272.
  • the radiator module consists of two cross-shaped dipoles, which are arranged diagonally in a reflector box that is square in plan view.
  • the reflector box base arranged parallel to the dipole surfaces forms the actual reflector plane, which is provided all round with conductive boundary walls oriented perpendicular to the reflector plane.
  • This prior publication thus describes a cross dipole arrangement for circular polarizations.
  • DE-GM 71 42 601 discloses a typical judge radiator field for circular or electrical polarizations for the construction of omnidirectional antennas.
  • the prior publication EP 0 730 319 A1 describes an antenna arrangement with two dipole antennas which are arranged one above the other in the vertical direction and are located in front of a reflector plate.
  • the reflector plate is provided with two lateral outer reflector sections or reflector wings, which are angled forward about a bend edge that runs vertically and parallel to the dipoles. This is intended to change the antenna characteristics in order to prevent lateral radiation.
  • an edge angle is preferably used for the side reflector parts, which is between 45 ° to 90 °, ie at 90 ° perpendicular to the reflector plane.
  • this antenna is also equipped with two additional reflectors placed on the reflector surface and lying between the angled lateral reflector sections and the dipoles sitting in the vertical orientation.
  • rails which are equipped with a longitudinal slot in the middle. The longitudinal slots lie between the two vertical dipoles and are covered in side view over the outer reflector plate sections.
  • the constancy of the polarization orientation of the field strength vector in a desired propagation plane is significantly improved with relatively simple means compared to all previously known solutions, and thus the radiation diagram is significantly broadened in this propagation plane.
  • the slots provided on the side by the radiator modules simultaneously are excited by the + 45 ° polarization components as well as the -45 ° polarization components. Although it should be expected that this could result in a decrease and decoupling between the + 45 ° polarization components and the -45 ° polarization components, the opposite is true. It is possible according to the invention to determine the slots and dimensions in such a way that the radiation contribution of the slots causes no or only a slight phase shift with respect to the vertical polarization component and thus contributes to a significant improvement in the polarization alignment of the + 45 ° / -45 ° polarized antennas. The optimum radiation characteristic is achieved if, as is provided according to the invention, the slots in the side wall sections are selected such that they radiate outside of their resonance.
  • a further rectangular slit is made in the antenna plane lying to the side next to the primary aperture, in which preferably also further horizontal slots zonal coupling pins can protrude. This is intended to enlarge the half-value width of the radiation lobe in the sectional plane of the coupling pins.
  • the antenna arrangement according to the invention is constructed in a completely different way.
  • Lateral slots are also provided in the solution according to the invention.
  • these slots are not used for an antenna with a layer structure, but for a dipole arrangement or a patch radiator.
  • the antenna according to the invention is oriented with a polarization orientation of + 45 ° and -45 ° with respect to the vertical. It is completely surprising that the solution according to the invention can improve the width characteristic in the main beam direction without the decoupling of both polarizations being impaired.
  • the slots provided on the side by the radiator modules are simultaneously excited by the + 45 ° polarization components and the -45 ° polarization components. It should be expected that this would lead to a reduction in the decoupling between the + 45 ° and -45 ° polarizations.
  • the dimensions and position of the slots can be adjusted in such a way that the radiation contribution of the slots causes no or only a slight phase shift with respect to the vertical polarization component and thus leads to a significant improvement in the polarization risk orientation of the +45 0 / -45 ° polarized antenna contributes (if the tuning and position were different, circular portions would arise).
  • the amplitude and phase of the waves emitted by the coupled slots can surprisingly be influenced in a positive manner by the side walls with the slots provided on the reflector and preferably protruding from the reflector plane. It can be achieved that extinguishments take place in the main beam direction and in the backward direction, and that additive superimpositions are achieved orthogonally to the main beam direction, thus widening the radiation characteristic.
  • the antenna arrangement according to the invention has a broadband characteristic.
  • Figure 1 a first schematic embodiment of a dual polarized antenna arrangement
  • FIG. 2 shows a schematic horizontal cross-sectional representation through the exemplary embodiment according to FIG. 1;
  • Figure 3 is a diagram for explaining a radiation diagram when using a conventional arrangement.
  • Figure 4 a corresponding diagram to Figure 3 using a dual polarized antenna arrangement according to the invention.
  • a dual-polarized antenna array 1 with a plurality of primary radiators in a vertical orientation is shown, the radiator modules 3 of which are formed in the manner of cross modules 3a.
  • Other cross module designs are also possible, e.g. in the form of square dipole modules.
  • This antenna array is constructed in such a way that the radiator modules 3 are aligned in the manner of cross modules 3a in such a way that they have linear polarizations at an angle of + 45 ° and -45 ° with respect to the vertical (or with respect to the Horizontal) receive or radiate.
  • Such an antenna array is also referred to below as an X-polarized antenna array.
  • the radiator modules 3 sit in front of a reflecting surface, the so-called reflector 7, which increases the directivity. They are attached and held on the reflector 7 by their radiator feet or symmetries 3b.
  • the dipole plane is oriented at + 45 ° or -45 ° with respect to the vertical, i.e. compared to the horizontal cutting plane 9.
  • two side wall sections 15 are provided in the side region 13 of the reflector 7, spaced in the horizontal direction and extending parallel to one another in the exemplary embodiment shown.
  • the side wall sections 15 are part of the reflector 7 and can be part of a reflector element or sheet, in which the side wall sections are formed by bending up or bending over.
  • the side wall sections 15 are thus aligned transversely, ie perpendicularly to the reflector plane 11 in the exemplary embodiment shown, and protrude above the reflector plane 11, specifically on the side on which the radiator modules 3 are arranged, which, in the front view of the antenna array 1, see the two in parallel mutually extending side wall sections 15 come to rest.
  • slots 17 are made in each of the side wall sections 5, which extend parallel to the reflector plane 11 and thus parallel to the dipole plane 19, which are determined from the plane in which the dipoles 3, 3a lie is.
  • the distance between the dipole plane 19 and the reflector plane 11 is greater than the distance 21 between the slots 17 and the reflector plane 11.
  • the position and dimensions of the slots can be selected differently and are preferably adjusted so that the amplitude and phase of the wave emitted by the coupled slots or the emitted horizontal polarization component of the electromagnetic wave are such that in The main beam direction 23 and an extinction take place in the rear direction and additive superimpositions are achieved orthogonally to the main beam direction, and the smallest possible phase shift to the vertical polarization main component is achieved.
  • a slot length is preferably selected which is in the range from a quarter of the wavelength to an entire wavelength.
  • the field strength vector defined by the dipole alignment and falling into the main propagation plane 9 is also emitted in its side beam direction 25 with a significantly larger half width in the side regions deviating from the main beam direction 23.
  • the slits 17 thus broaden the radiation characteristic in a targeted manner, the improved radiation characteristic not only being narrowband but also broadband.
  • the size and position of the slots 17 are preferably optimized in such a way that the weakly radiating parasitic radiators formed in the manner of slots do not radiate in resonance and not in phase, but in opposite phase.
  • the improved radiation characteristic can be seen from the diagrams 3 and 4, it being evident from the diagram according to FIG. 4 that the half-widths of the vertical, horizontal and + 45 ° / -45 ° components match and thus the constancy of the polarization in half-width with the antenna array according to the invention, for example according to FIGS. 1 and 2 compared to one conventional arrangement is significantly improved. It can also be seen from the diagram in accordance with FIGS. 3 and 4 that the advantageous improved radiation characteristic can be implemented over a broadband range.
  • the side wall areas with the slots can each be a separate component, but are preferably firmly connected to the reflector.
  • the side wall sections can be produced by edging and bending the reflector plate.
  • the side wall sections need not necessarily be arranged on the outer edge region 31 of the reflector 7. In contrast, they can be arranged on the outside or, as shown in FIGS. 1 and 2, further away from the outer edge 31, to be precise with the formation of an outer edge strip 41.
  • the distance between the slots 17 and the reflector plane 11 is preferably less than the distance between the dipole or cross module plane 19 and the reflector plane 11.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Aerials With Secondary Devices (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)

Abstract

L'invention concerne une amélioration apportée à un système d'antenne à double polarisation, servant à émettre et à recevoir des ondes électromagnétiques. Le module émetteur en forme de croix dudit système est orienté avec un angle de +45° et de -45° par rapport à la verticale et par conséquent par rapport à un plan de coupe de préférence horizontal. Ce système est équipé de préférence d'un réflecteur monté à l'arrière du(des) module(s) émetteur(s). L'invention est caractérisée de la manière suivante: deux parties parois latérales (15) sont prévues dans le plan de coupe horizontal (9), de chaque côté du(des) module(s) émetteur(s) (3); les deux parties parois latérales (15) sont placées perpendiculairement au plan de coupe horizontal (9), c'est-à-dire verticalement; au moins une fente (17) est prévue dans les parties parois latérales (15) à la hauteur du plan de coupe horizontal (9) par rapport au module émetteur concerné (3).
EP98930740A 1997-05-30 1998-05-27 Systeme d'antenne Expired - Lifetime EP0916169B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19722742A DE19722742C2 (de) 1997-05-30 1997-05-30 Dualpolarisierte Antennenanordnung
DE19722742 1997-05-30
PCT/EP1998/003129 WO1998054787A1 (fr) 1997-05-30 1998-05-27 Systeme d'antenne

Publications (2)

Publication Number Publication Date
EP0916169A1 true EP0916169A1 (fr) 1999-05-19
EP0916169B1 EP0916169B1 (fr) 2002-08-07

Family

ID=7830966

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98930740A Expired - Lifetime EP0916169B1 (fr) 1997-05-30 1998-05-27 Systeme d'antenne

Country Status (12)

Country Link
US (1) US6195063B1 (fr)
EP (1) EP0916169B1 (fr)
KR (1) KR100657705B1 (fr)
CN (1) CN1166033C (fr)
AU (1) AU729918B2 (fr)
BR (1) BR9804937B1 (fr)
CA (1) CA2261625C (fr)
DE (2) DE19722742C2 (fr)
DK (1) DK0916169T3 (fr)
ES (1) ES2181241T3 (fr)
NZ (1) NZ333517A (fr)
WO (1) WO1998054787A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006037518B3 (de) * 2006-08-10 2008-03-06 Kathrein-Werke Kg Antennenanordnung, insbesondere für eine Mobilfunk-Basisstation
US7427966B2 (en) 2005-12-28 2008-09-23 Kathrein-Werke Kg Dual polarized antenna

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US6072439A (en) * 1998-01-15 2000-06-06 Andrew Corporation Base station antenna for dual polarization
DE19860121A1 (de) * 1998-12-23 2000-07-13 Kathrein Werke Kg Dualpolarisierter Dipolstrahler
US6356242B1 (en) * 2000-01-27 2002-03-12 George Ploussios Crossed bent monopole doublets
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DE10203873A1 (de) * 2002-01-31 2003-08-14 Kathrein Werke Kg Dualpolarisierte Strahleranordnung
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DE10359622A1 (de) * 2003-12-18 2005-07-21 Kathrein-Werke Kg Antenne mit zumindest einem Dipol oder einer dipolähnlichen Strahleranordnung
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JP6525064B2 (ja) * 2015-11-19 2019-06-05 日本電気株式会社 無線通信装置
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US10148015B2 (en) 2016-03-14 2018-12-04 Kathrein-Werke Kg Dipole-shaped antenna element arrangement
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CN106207456B (zh) * 2016-08-22 2021-10-22 广东通宇通讯股份有限公司 一种多频天线
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CN106876983A (zh) * 2017-03-03 2017-06-20 深圳市共进电子股份有限公司 无线通信设备及其双频天线
CN110462931B (zh) * 2017-03-29 2021-07-06 日本电业工作株式会社 阵列天线以及扇形天线
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DE59805084D1 (de) 2002-09-12
CN1166033C (zh) 2004-09-08
DE19722742A1 (de) 1998-12-10
CA2261625A1 (fr) 1998-12-03
BR9804937B1 (pt) 2013-09-17
WO1998054787A1 (fr) 1998-12-03
AU8106898A (en) 1998-12-30
KR100657705B1 (ko) 2006-12-19
CA2261625C (fr) 2003-04-08
ES2181241T3 (es) 2003-02-16
AU729918B2 (en) 2001-02-15
BR9804937A (pt) 2000-01-18
KR20000029472A (ko) 2000-05-25
DE19722742C2 (de) 2002-07-18
HK1021774A1 (en) 2000-06-30
US6195063B1 (en) 2001-02-27
NZ333517A (en) 1999-08-30
EP0916169B1 (fr) 2002-08-07
CN1228202A (zh) 1999-09-08
DK0916169T3 (da) 2002-12-02

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