EP2118963B1 - Dispositif servant à influencer la caractéristique de rayonnement d'une antenne à réflecteur, en particulier d'une antenne à réflecteur à focalisation centrale - Google Patents

Dispositif servant à influencer la caractéristique de rayonnement d'une antenne à réflecteur, en particulier d'une antenne à réflecteur à focalisation centrale Download PDF

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Publication number
EP2118963B1
EP2118963B1 EP08706893A EP08706893A EP2118963B1 EP 2118963 B1 EP2118963 B1 EP 2118963B1 EP 08706893 A EP08706893 A EP 08706893A EP 08706893 A EP08706893 A EP 08706893A EP 2118963 B1 EP2118963 B1 EP 2118963B1
Authority
EP
European Patent Office
Prior art keywords
reflector
transducer elements
horn
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.)
Not-in-force
Application number
EP08706893A
Other languages
German (de)
English (en)
Other versions
EP2118963A1 (fr
Inventor
Frank E. WÖTZEL
Mario Nowack
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.)
Hassner Katrin
Original Assignee
Hassner Katrin
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Filing date
Publication date
Application filed by Hassner Katrin filed Critical Hassner Katrin
Publication of EP2118963A1 publication Critical patent/EP2118963A1/fr
Application granted granted Critical
Publication of EP2118963B1 publication Critical patent/EP2118963B1/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
    • H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
    • H01Q13/02—Waveguide horns
    • 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
    • H01Q19/18—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 having two or more spaced reflecting surfaces
    • H01Q19/19—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 having two or more spaced reflecting surfaces comprising one main concave reflecting surface associated with an auxiliary reflecting surface
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • 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
    • H01Q3/44—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 electric or magnetic characteristics of reflecting, refracting, or diffracting devices associated with the radiating element
    • H01Q3/446—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 electric or magnetic characteristics of reflecting, refracting, or diffracting devices associated with the radiating element the radiating element being at the centre of one or more rings of auxiliary elements

Definitions

  • the invention relates to an improved arrangement for influencing the radiation characteristic of a reflector antenna, in particular a centrally focused reflector antenna.
  • the purpose of the arrangement is primarily to change the radiation characteristic of such an antenna with the aid of control signals in a clearly repeatable manner, so that the invention is also suitable for the purpose of tracking an antenna.
  • a corrugated horn or a flat widened hollow conductor piece is used to excite a centrally focused reflector antenna system or for beam control as an exciter system at the end of the waveguide.
  • the excitation system is arranged in the focal point, the phase center, the reflector antenna and should illuminate this optimally. Of particular importance is the largely uniform illumination of the reflector with uniform phase assignment.
  • the problem with the known technical solutions is that the functionalities of the groove exciter system or of the flat widened waveguide do not achieve an optimal field distribution in the reflector system or optimal illumination.
  • the problems associated with this are due to EP 1 384 287 B1 disclosed technical solution can be solved.
  • the EP 1 384 287 B1 describes an arrangement for exciting a centrally-focused reflector antenna having a waveguide and a dielectric support, wherein a dielectric field transformer and the dielectric support is arranged in front of the waveguide in the vicinity of the dielectric field transformer without mechanically or electrically connected to the waveguide.
  • the dielectric carrier has in its center a circular bore whose diameter corresponds to the diameter of the dielectric field transformer. In this arrangement, the dielectric field transformer projects partially into the circular bore.
  • an assembly platform for follower modules is formed. This arrangement fully fulfills its function, provided that this reflector antenna is used for the reception of satellite signals.
  • the US3276022 discloses a reflector antenna with elements in the subrejector.
  • a reflector antenna with radiating elements is arranged between the central receiving unit and the subreflector.
  • pamphlet WO001982004503A1 discloses rod-shaped receiving elements in a reflector antenna. There are no arrangements for influencing the radiation characteristic provided.
  • GB760388 discloses placing disk-shaped dielectric beam shaping elements in the waveguides of a reflector antenna to compensate for phase differences in the incoming microwaves.
  • the object of the invention is therefore to provide an improved arrangement for influencing the radiation characteristic of a reflector antenna, in particular a centrally focused reflector antenna, the radiation characteristic of the antenna by means of control signals repeatedly changed with smaller design and without field transformer so that the arrangement for tracking of antennas is suitable and antennas with this arrangement can be used to receive transmission signals from satellites and / or to transmit such signals to satellites.
  • the arrangement according to the invention combines the advantage that in a small dimension, a technical solution with minimal mechanical and electrical expenses for reflector antennas, especially those on moving platforms, is provided, which allows the tracking of the antenna to a satellite in high accuracy.
  • Both the reception of signals, such as the TV reception, and the antenna diagram can be controlled within certain limits so that the parallel operation of reception and transmission is simultaneously feasible.
  • the beam or diagram control is possible in real time. While it is limited to a specific spectral range when it is being received, it does not or hardly affects the transmission range.
  • Another essential advantage of the technical solution according to the invention over the known prior art is that with it the hemisphere can be completely imaged from 0 ° to 180 ° in elevation and from 0 ° to 360 ° in azimuth.
  • the arrangement according to the invention can be used in known reflector antennas. It is also environmentally tolerant to temperature, humidity and vibration and is also inexpensive to produce with a small number of controls.
  • the arrangement comprises four radiator elements which are arranged concentrically on the horn, wherein the radiator elements are those elements which are suitable for generating an interaction with an alternating electromagnetic field and are preferably dipoles, monopolies or active components, such as tunnel diodes ,
  • radiator elements have a resonance frequency which lies within the reception frequency range of the reflector antenna and that the radiator elements can be controlled sequentially, individually or in groups.
  • the control of the radiator elements takes place in a frequency range that is different from the useful frequency range of the reflector antenna.
  • radiator elements have control lines which are magnetically and electrically shielded and protected against mechanical influences.
  • the radiating elements are arranged in their axis on a locating cross, with respect to the center of the horn, at 45 degrees to the axis of the polarization cross.
  • radiator elements are connected according to a further embodiment of the invention in itself by a controllable active or passive control element, preferably by means of a switching diode.
  • the Fig. 1 intended to illustrate the basic structure of a reflector antenna. It is a total of a two-focus, centrally excited reflector antenna (1) shown. The components were shown schematically.
  • the antenna consists of a reflector (8) which is excited by means of a horn (4) and a subreflector (2).
  • the horn (4) is fed via a waveguide (3).
  • a mounting option (22) for subsequent assemblies is also included.
  • Fig. 2 shows a schematic side view of the Fig. 1 originating waveguide (3) with the horn (4).
  • the radiator elements (5) on dielectric supports (12; 13; 14; 15) are arranged laterally on the horn (4) and protrude slightly beyond the edge of the horn (4).
  • the radiator elements (5) shown here are located at the end of the dielectric support (11) and project beyond the horn opening.
  • Fig. 3 the principle of the arrangement of the radiator elements (5) on the dielectric support (11) is outlined.
  • the radiator elements (5) are exemplified as a dipole and connected controllably by means of a switching device.
  • the control line (25) should be shown schematically, which in turn is connected to the active or passive control element (26).
  • these control lines (25) from the dielectric support (12) are connected to subsequent assemblies by guiding in a thin metal tube (20) having electrical and magnetic shielding properties.
  • the metal tube (20) is fixedly connected to the dielectric carrier (11) and to the side facing away from the radiator element (5).
  • Fig. 4 shows the exemplary arrangement of the polarization cross (23) for linear polarization with respect to the arrangement of the radiator elements (5). It does not matter how the axes of horizontal and vertical polarization are assigned. It is assumed that the axes are orthogonal to each other.
  • Fig. 7 a section of an exemplary construction of the antenna (1) is shown.
  • the support elements (18) in the example 4 pieces, as well as the entire waveguide structure for excitation of the subreflector (10) attached, consisting of a waveguide (3), a metal cylinder (21) which on the waveguide ( 3) is fixed and in which the exciting horn (4) is introduced.
  • the fastening rings (19) are in turn mounted on the waveguide (3) and the cylinder (21) and in turn receive the thin metal tube (20) in which run the control lines.
  • the waveguide (3) and the elements connected to it are protected by a metal tube (16), which is also fixed to the mounting rings (19).
  • the sectional view also shows how the sub-reflector (10) with its mounting option (11), together with the support elements (18) with the Mulitfunktionshalterung (17) is positively connected.

Landscapes

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

Claims (9)

  1. Disposition destinée à influencer la caractéristique de rayonnement d'une antenne réflectrice (1) à focalisation centrale, la disposition présentant une antenne réflectrice (1) munie d'un réflecteur (9), d'un guide d'ondes (3) à cornet (4) et d'éléments rayonnants (5) commandables, caractérisée en ce que la disposition présente un réflecteur secondaire (2, 10) et deux éléments rayonnants (5) commandables et plus, qui sont disposés de manière fixe sur le cornet (4) et influencent, une fois activés, la marche des rayons entre le réflecteur (9) et le réflecteur secondaire (2, 10), les deux éléments rayonnants (5) et plus étant disposés chacun sur un support diélectrique (12, 13, 14, 15), placé sur le côté extérieur du cornet en émergeant du bord de celui-ci.
  2. Disposition selon la revendication 1, caractérisée en ce que la disposition présente quatre éléments rayonnants (5) disposés de manière concentrique sur le cornet (4).
  3. Disposition selon l'une quelconque des revendications 1 ou 2, caractérisée en ce que les éléments rayonnants (5) sont des éléments capables de générer une interaction avec un champ électromagnétique alternatif, et sont de préférence des dipôles, des monopôles ou des composants actifs, tels que les diodes tunnel.
  4. Disposition selon l'une quelconque des revendications 1 à 3, caractérisée en ce que les éléments rayonnants (5) présentent une fréquence de résonance comprise dans la plage de fréquence de réception de l'antenne réflectrice (1).
  5. Disposition selon l'une quelconque des revendications 1 à 4, caractérisée en ce que les éléments rayonnants (5) peuvent être commandés par séquence, individuellement ou en groupe.
  6. Disposition selon l'une quelconque des revendications 1 à 5, caractérisée en ce que la commande des éléments rayonnants (5) s'effectue sur une plage de fréquence différente de la plage de fréquence d'utilisation de l'antenne réflectrice (1).
  7. Disposition selon l'une quelconque des revendications 1 à 6, caractérisée en ce que les éléments rayonnants (5) présentent des conduites de commande (25) munies d'un blindage magnétique ou électrique et protégées contre les influences mécaniques.
  8. Disposition selon l'une quelconque des revendications 1 à 7, caractérisée en ce que les éléments rayonnants (5) sont disposés dans leur axe sur une croix de disposition (24), par rapport au centre du cornet (4), à 45 degrés par rapport à l'axe de la croix de polarisation (23).
  9. Disposition selon l'une quelconque des revendications 1 à 8, caractérisée en ce que les éléments rayonnants (5) sont reliés ensemble par un élément de commande (26) actif ou passif, pouvant être commandé, de préférence au moyen d'une diode de commutation.
EP08706893A 2007-02-13 2008-02-13 Dispositif servant à influencer la caractéristique de rayonnement d'une antenne à réflecteur, en particulier d'une antenne à réflecteur à focalisation centrale Not-in-force EP2118963B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007007707A DE102007007707A1 (de) 2007-02-13 2007-02-13 Anordnung zur Beeinflussung der Strahlungscharakteristik einer Reflektorantenne, insbesondere einer zentral fokussierten Reflektorantenne
PCT/DE2008/000284 WO2008098570A1 (fr) 2007-02-13 2008-02-13 Dispositif servant à influencer la caractéristique de rayonnement d'une antenne à réflecteur, en particulier d'une antenne à réflecteur à focalisation centrale

Publications (2)

Publication Number Publication Date
EP2118963A1 EP2118963A1 (fr) 2009-11-18
EP2118963B1 true EP2118963B1 (fr) 2012-04-11

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP08706893A Not-in-force EP2118963B1 (fr) 2007-02-13 2008-02-13 Dispositif servant à influencer la caractéristique de rayonnement d'une antenne à réflecteur, en particulier d'une antenne à réflecteur à focalisation centrale

Country Status (8)

Country Link
US (1) US20100085265A1 (fr)
EP (1) EP2118963B1 (fr)
KR (1) KR20090117943A (fr)
CN (1) CN101636874A (fr)
AT (1) ATE553514T1 (fr)
DE (1) DE102007007707A1 (fr)
IL (1) IL200408A0 (fr)
WO (1) WO2008098570A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012025123A1 (de) * 2012-12-21 2014-06-26 Epak Gmbh Anordnung und Verfahren zur elektronischen Nachführung von HF-Reflektorantennen
US9634400B2 (en) * 2013-10-02 2017-04-25 Winegard Company Dish antenna having a self-supporting sub-reflector assembly

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB760388A (en) 1953-12-24 1956-10-31 Decca Record Co Ltd Improvements in or relating to radio antennae
US3276022A (en) 1964-05-13 1966-09-27 Aeronca Mfg Corp Dual frequency gregorian-newtonian antenna system with newtonian feed located at common focus of parabolic main dish and ellipsoidal sub-dish
US4387378A (en) 1978-06-28 1983-06-07 Harris Corporation Antenna having electrically positionable phase center
GB2058468B (en) * 1979-08-23 1983-10-12 Marconi Co Ltd Dual frequency aerial feed arrangement
US4574289A (en) * 1983-05-31 1986-03-04 Harris Corporation Rotary scan antenna
US5041840A (en) * 1987-04-13 1991-08-20 Frank Cipolla Multiple frequency antenna feed
US4928109A (en) * 1988-10-14 1990-05-22 Cubic Defense Systems, Inc. Modulated scanning antenna
US5835062A (en) * 1996-11-01 1998-11-10 Harris Corporation Flat panel-configured electronically steerable phased array antenna having spatially distributed array of fanned dipole sub-arrays controlled by triode-configured field emission control devices
US6031506A (en) * 1997-07-08 2000-02-29 Hughes Electronics Corporation Method for improving pattern bandwidth of shaped beam reflectarrays
US5973654A (en) * 1998-10-06 1999-10-26 Mitsubishi Electronics America, Inc. Antenna feed having electrical conductors differentially affecting aperture electrical field
US6496156B1 (en) * 1998-10-06 2002-12-17 Mitsubishi Electric & Electronics Usa, Inc. Antenna feed having centerline conductor
DE10041996A1 (de) 2000-08-10 2002-03-07 Frank E Woetzel Anordnung zur Beeinflussung und Steuerung elektromagnetischer Wechselfelder und/oder Antennen und Antennendiagrammen
US6396449B1 (en) * 2001-03-15 2002-05-28 The Boeing Company Layered electronically scanned antenna and method therefor
DE20107294U1 (de) 2001-04-21 2001-08-23 Wötzel, Frank E., 10249 Berlin Anordnung zur Erregung einer zentralfokussierten Reflektorantenne
SE0301200D0 (sv) * 2003-04-24 2003-04-24 Amc Centurion Ab Antenna device and portable radio communication device comprising such an antenna device

Also Published As

Publication number Publication date
DE102007007707A1 (de) 2008-08-21
US20100085265A1 (en) 2010-04-08
CN101636874A (zh) 2010-01-27
WO2008098570A1 (fr) 2008-08-21
KR20090117943A (ko) 2009-11-16
IL200408A0 (en) 2010-04-29
EP2118963A1 (fr) 2009-11-18
ATE553514T1 (de) 2012-04-15
WO2008098570B1 (fr) 2008-11-06

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