EP1969674B1 - Ensemble antenne et son utilisation - Google Patents

Ensemble antenne et son utilisation Download PDF

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Publication number
EP1969674B1
EP1969674B1 EP06819622A EP06819622A EP1969674B1 EP 1969674 B1 EP1969674 B1 EP 1969674B1 EP 06819622 A EP06819622 A EP 06819622A EP 06819622 A EP06819622 A EP 06819622A EP 1969674 B1 EP1969674 B1 EP 1969674B1
Authority
EP
European Patent Office
Prior art keywords
slots
antenna arrangement
arrangement according
cylinder
antenna
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.)
Not-in-force
Application number
EP06819622A
Other languages
German (de)
English (en)
Other versions
EP1969674A1 (fr
Inventor
Bert Jannsen
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP1969674A1 publication Critical patent/EP1969674A1/fr
Application granted granted Critical
Publication of EP1969674B1 publication Critical patent/EP1969674B1/fr
Not-in-force 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
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/28—Combinations of substantially independent non-interacting antenna units or systems
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
    • H01Q13/10—Resonant slot antennas
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
    • H01Q13/10—Resonant slot antennas
    • H01Q13/18—Resonant slot antennas the slot being backed by, or formed in boundary wall of, a resonant cavity ; Open cavity antennas
    • 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

Definitions

  • the invention is based on an antenna arrangement consisting of a conductive cylinder which is placed on a conductive surface.
  • the beam characteristic that is the antenna diagram
  • patch antennas are used today, which can be both compact and inexpensive to manufacture, as well as the required for the satellite services polarization (left / right circular) can provide.
  • the additional reception of vertically polarized signals at elevation angles between 0 ° and 10 ° usually fails in this type of antennas at a low gain.
  • Antennas currently in use such as patch antennas, typically have the characteristics of having a maximum peak gain (90 ° elevation) that drops rapidly at small elevation angles. In some systems, however, it makes sense to shift the maximum gain to smaller elevation angles (by 30 °), so that sufficient profit is available even in peripheral areas. This is useful, for example, in geostationary satellite systems which, due to their trajectory, can only supply their coverage area at a low elevation angle. These low elevation angles usually also result in reception problems in shaded areas such as cities or mountain regions. In order to still allow a reception, repeaters are used, which work in the same frequency range but use a different polarization (vertical).
  • an antenna arrangement consisting of a conductive hollow cylinder whose conductive end face is applied to a conductive surface.
  • a conductive hollow cylinder whose conductive end face is applied to a conductive surface.
  • radial slots are provided on the conductive surfaces facing away from the end face of the hollow cylinder . These slots or the segments formed by them are fed individually.
  • the height of the cylinder is chosen in the range smaller than half the operating wavelength 10 that the radiation characteristic in the area outside the cylinder axis has a higher antenna gain than in the region of the cylinder axis.
  • the height of the cylinder is less than half of the Operating wavelength selected so that the radiation characteristic in the area outside the cylinder axis has a higher antenna gain than in the range of the cylinder axis, it is possible to achieve a high antenna gain at low elevation angles between 0 ° and 10 °, especially in vertical polarization.
  • the gain in the elevation range can be adjusted so that it is raised at low elevation angles.
  • the antenna according to the invention not only provides a left circular polarization but also a high gain of the vertical components at very low elevation angles between 0 ° and 30 ° at the same port.
  • the dimensions of the antenna described below can be further reduced by constructing the antenna on a substrate with a high dielectric constant and / or surrounded by such a material.
  • FIG. 1 shows the structure of an antenna arrangement according to the prior art for explaining the invention.
  • a metallically conductive cylinder is placed or applied.
  • This cylinder 2 has radial slots 3 on its end face remote from the conductive surface 1.
  • these slots 3 are formed as rectangular cross-slots arranged perpendicular to each other, which extend from the central axis of the cylinder 2 to the outer boundary of the end face.
  • the segments 4 formed by the slots 3 are fed individually.
  • the feeding points 5 are close to the intersection of the slots, that is near the cylinder axis.
  • FIG. 2 shows the same antenna arrangement as FIG. 1 with additional representation of the current distribution, the intensity being recognizable by the gray scale.
  • the height of the cylinder is selected in the range smaller than half the operating wavelength so that the radiation characteristic in the area outside the cylinder axis, in particular at the outer edge, a higher antenna gain g than in the region of the cylinder axis.
  • FIGS. 6 and 7 the antenna diagrams of different arrangements are shown. An ideal adaptation was required.
  • FIG. 11 recesses 10 are also provided in the region of the slots 3 ( FIG. 11 ).
  • the elevation range of the antenna pattern can be manipulated to emphasize the gain in the peripheral areas of the antenna pattern.
  • the concept is very simple and inexpensive executable.
  • FIGS. 14 and 15 show, more also rectangular slots in the cylinder 2 may be arranged to cover other frequency ranges and / or to stimulate polarization.
  • an additional radial slot 11 is provided in the end face and in FIG. 15 a slot 12 in the outer jacket.
  • This signal can either be connected to the in FIG. 3 drawn port P1 or at the decoupled from port P1 port P2 are tapped.
  • the desired increase in the gain g to recognize smaller elevation angles.
  • the excitation of the antenna (the Figures 1 and 2 show the excitation points 5) is realized by four signals phase-shifted by 90 °, by a feed network 13, as z.
  • FIG. 3 is shown generated.
  • the 4 signals are generated by using three 3 dB hybrids 1 - 3 in combination with a 90 ° detour line.
  • the receiving left circularly polarized signal are tapped.
  • the terminators are in FIG. 3 denoted by R.
  • the supply of the signals to the antenna structure can be carried out in various ways known from the literature.
  • FIG. 1 represented the contact points 5 of a direct excitation.
  • the signals by means of lines 14 from the arranged below the conductive surface 1 feed network 13th isolated performed by the conductive surface 1 and the contact points supplied directly (ohmic contact).
  • the position of the excitation FIG. 1 : R_A
  • the input impedance of the antenna can be influenced by alternatively exciting the antenna by field coupling.
  • This field coupling is shown schematically by a plan view in more detail. The different hatchings indicate different heights (positions) within the cylinder.
  • the field coupling is carried out by four open at the end lines 15, which extend perpendicular to these under the slots 3. Through coupling of the fields, the excitation takes place. By varying the line width and the length of the open lines 15 and the distance between the slots 3 and the lines 15, the input impedance of the antenna can be largely influenced.
  • the arrows indicate the excitation of the cables. Between the line excitation and the overlapping with the slots 3 line sections are in FIG. 5 Matching elements 14, for example in the form of stubs, shown, which serve to adapt the antenna impedance to the line impedance. Such matching elements can also be provided in the direct coupling.

Landscapes

  • Waveguide Aerials (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)

Claims (13)

  1. Arrangement d'antenne composé d'un cylindre creux (2) conducteur, comprenant un axe de cylindre et au moins une surface frontale conductrice, et d'une surface conductrice (1), le cylindre creux étant monté sur la surface conductrice (1) avec les caractéristiques suivantes :
    - des fentes radiales (3) sont prévues sur la surface frontale du cylindre creux (2) à l'opposé de la surface conductrice (1), les fentes radiales s'étendant de l'axe central du cylindre creux (2) jusqu'à la bordure extérieure de la surface frontale,
    - les segments (4) formés par les fentes radiales (3) ou les fentes elles-mêmes sont alimentés individuellement,
    - la hauteur du cylindre creux (2), dans la plage inférieure à la moitié de la longueur d'onde de service, est choisie de telle sorte que la caractéristique de rayonnement présente dans la zone à l'extérieur de l'axe du cylindre un gain d'antenne supérieure à celui dans la zone de l'axe du cylindre, caractérisé en ce que
    - une bordure supplémentaire (9) du cylindre creux (2) dépasse du plan des fentes dans le sens du rayonnement,
    - des creux (8) sont prévus dans la bordure dans la zone des fentes (3).
  2. Arrangement d'antenne selon la revendication 1, caractérisé en ce que l'alimentation est effectuée de telle sorte qu'il s'établit une polarisation circulaire.
  3. Arrangement d'antenne selon la revendication 1 ou 2, caractérisé en ce que les fentes (3) sont rallongées sur le bord du cylindre (2).
  4. Arrangement d'antenne selon l'une des revendications 1 à 3, caractérisé en ce que l'alimentation est effectuée de telle sorte qu'une polarisation verticale s'établit à la place ou en complément de la polarisation circulaire.
  5. Arrangement d'antenne selon l'une des revendications 1 à 4, caractérisé en ce que des fentes supplémentaires (11, 12) sont prévues dans le cylindre (2) pour activer un rayonnement dans d'autres plages de fréquences et/ou polarisations.
  6. Arrangement d'antenne selon l'une des revendications 1 à 5, caractérisé en ce que les fentes (3, 11, 12) sont de forme rectangulaire.
  7. Arrangement d'antenne selon l'une des revendications 1 à 6, caractérisé en ce que deux fentes (3) disposées perpendiculairement l'une à l'autre et dont la longueur est à chaque fois égale au diamètre du cylindre sont prévues.
  8. Arrangement d'antenne selon l'une des revendications 1 à 7, caractérisé en ce que les points d'alimentation (5) des segments (4) sont reliés avec un réseau d'alimentation (13) par le biais de contacts ohmiques.
  9. Arrangement d'antenne selon l'une des revendications 1 à 8, caractérisé en ce que les fentes (3) peuvent être excitées par des couplages de champ.
  10. Arrangement d'antenne selon la revendication 9, caractérisé en ce que des lignes de couplage (15) qui croisent les fentes à exciter (3) sont prévues pour l'excitation des fentes (3) par couplage de champ.
  11. Arrangement d'antenne selon l'une des revendications 1 à 10, caractérisé en ce que l'alimentation prévue s'effectue par une source de haute fréquence unique depuis un réseau d'alimentation (13) sous la surface conductrice (1), lequel est relié par le biais de contacts ohmiques et de passages correspondants dans la surface conductrice (1) avec les points d'alimentation (5) de chaque segment (4) et/ou des lignes de couplage.
  12. Arrangement d'antenne selon l'une des revendications 8 à 11, caractérisé en ce que le réseau d'alimentation (13), pour distribuer l'énergie de la source de haute fréquence sur les segments (4) et/ou les lignes de couplage pour un rayonnement souhaité, présente un hybride 3 dB, éventuellement en combinaison avec une ligne de dérivation de 90°.
  13. Arrangement d'antenne selon l'une des revendications 1 à 12, caractérisé en ce que le cylindre (2) est rempli et/ou entouré d'un matériau qui présente un indice diélectrique relatif supérieur à 1.
EP06819622A 2005-12-27 2006-11-20 Ensemble antenne et son utilisation Not-in-force EP1969674B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200510062542 DE102005062542A1 (de) 2005-12-27 2005-12-27 Antennenanordnung sowie Verwendung
PCT/EP2006/068672 WO2007073993A1 (fr) 2005-12-27 2006-11-20 Ensemble antenne et son utilisation

Publications (2)

Publication Number Publication Date
EP1969674A1 EP1969674A1 (fr) 2008-09-17
EP1969674B1 true EP1969674B1 (fr) 2010-09-01

Family

ID=37527596

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06819622A Not-in-force EP1969674B1 (fr) 2005-12-27 2006-11-20 Ensemble antenne et son utilisation

Country Status (5)

Country Link
EP (1) EP1969674B1 (fr)
JP (1) JP2009521885A (fr)
CN (1) CN101346854B (fr)
DE (2) DE102005062542A1 (fr)
WO (1) WO2007073993A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101728645B (zh) * 2009-12-25 2014-04-02 山东科技大学 双极化全向天线
US9118116B2 (en) * 2012-12-12 2015-08-25 AMI Research & Development, LLC Compact cylindrically symmetric UHF SATCOM antenna
CN103280624A (zh) * 2013-04-09 2013-09-04 广东工业大学 一种贴片天线
JP6434816B2 (ja) * 2015-01-26 2018-12-05 日本放送協会 アンテナ装置、受信装置、及び反射鏡アンテナ装置
CN105119044B (zh) * 2015-09-09 2019-01-18 华为技术有限公司 一种微带天线及通信器件
JP2021192478A (ja) * 2020-06-05 2021-12-16 矢崎総業株式会社 スロットアンテナ
WO2024012659A1 (fr) * 2022-07-12 2024-01-18 Huawei Technologies Co., Ltd. Appareil d'antenne à cavité-fente et appareil de communication sans fil

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4242685A (en) * 1979-04-27 1980-12-30 Ball Corporation Slotted cavity antenna
US5202697A (en) * 1991-01-18 1993-04-13 Cubic Defense Systems, Inc. Low-profile steerable cardioid antenna
US6304226B1 (en) * 1999-08-27 2001-10-16 Raytheon Company Folded cavity-backed slot antenna
US6646618B2 (en) * 2001-04-10 2003-11-11 Hrl Laboratories, Llc Low-profile slot antenna for vehicular communications and methods of making and designing same
US6812893B2 (en) * 2002-04-10 2004-11-02 Northrop Grumman Corporation Horizontally polarized endfire array

Also Published As

Publication number Publication date
CN101346854B (zh) 2013-05-01
DE102005062542A1 (de) 2007-07-05
DE502006007801D1 (de) 2010-10-14
CN101346854A (zh) 2009-01-14
WO2007073993A1 (fr) 2007-07-05
EP1969674A1 (fr) 2008-09-17
JP2009521885A (ja) 2009-06-04

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