EP3675278B1 - Mehrfachstrahlantenne mit regulierbarer ausrichtung - Google Patents

Mehrfachstrahlantenne mit regulierbarer ausrichtung Download PDF

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Publication number
EP3675278B1
EP3675278B1 EP19219746.5A EP19219746A EP3675278B1 EP 3675278 B1 EP3675278 B1 EP 3675278B1 EP 19219746 A EP19219746 A EP 19219746A EP 3675278 B1 EP3675278 B1 EP 3675278B1
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EP
European Patent Office
Prior art keywords
rotation
antenna
arm
movable
support
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Application number
EP19219746.5A
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English (en)
French (fr)
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EP3675278A1 (de
Inventor
Jérôme Brossier
Laurent Martin
Jean-Marc Bassaler
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Thales SA
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Thales SA
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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
    • H01Q1/125—Means for positioning
    • H01Q1/1264—Adjusting different parts or elements of an aerial unit
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/27—Adaptation for use in or on movable bodies
    • H01Q1/28—Adaptation for use in or on aircraft, missiles, satellites, or balloons
    • H01Q1/288—Satellite antennas
    • 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
    • H01Q15/18—Reflecting surfaces; Equivalent structures comprising plurality of mutually inclined plane surfaces, e.g. corner reflector
    • H01Q15/20—Collapsible reflectors
    • 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
    • H01Q19/12—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 wherein the surfaces are concave
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q25/00—Antennas or antenna systems providing at least two radiating patterns
    • H01Q25/007—Antennas or antenna systems providing at least two radiating patterns using two or more primary active elements in the focal region of a focusing device
    • 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
    • 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
    • H01Q3/02—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole
    • H01Q3/08—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole for varying two co-ordinates of the orientation
    • 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
    • H01Q3/12—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical relative movement between primary active elements and secondary devices of antennas or antenna systems
    • H01Q3/16—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical relative movement between primary active elements and secondary devices of antennas or antenna systems for varying relative position of primary active element and a reflecting device
    • H01Q3/18—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical relative movement between primary active elements and secondary devices of antennas or antenna systems for varying relative position of primary active element and a reflecting device wherein the primary active element is movable and the reflecting device is fixed
    • 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
    • H01Q3/24—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 orientation by switching energy from one active radiating element to another, e.g. for beam switching
    • H01Q3/245—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 orientation by switching energy from one active radiating element to another, e.g. for beam switching in the focal plane of a focussing device

Definitions

  • the present invention relates to a multibeam antenna with adjustable pointing.
  • the invention applies particularly to reflector antennas in the space domain and in particular to satellite missions requiring independent repointing of radioelectric beams. Mention will be made in particular of so-called “gateway” antennas on geostationary satellites.
  • These antennas generally aim at several points on the earth's surface, the positions of which can evolve during the mission of the satellite independently of one another. In this case, it is necessary to repoint, that is to say to reorient, the beam of the antenna corresponding to the point whose position has changed. It may also be a new position of the satellite which in this case requires a repointing of the points targeted on earth.
  • the radiating sources of active antennas form a network and are associated with a system for distributing radio signals in amplitude and/or phase between these sources and with a system for controlling this distribution in according to predetermined laws.
  • Active antennas thus make it possible to carry out so-called “electronic” repointing, that is to say without mechanical action exerted on the antenna.
  • Active antennas therefore provide great flexibility in reorienting the beams associated with the various target points. This flexibility implies in return a high complexity of these antennas, an increase in mass, consumption and dissipation, which are critical on satellites.
  • the object of the present invention is to propose a multibeam antenna making it possible to repoint its beams independently while being compact, relatively light and of simple structure.
  • the invention relates to a multibeam antenna with adjustable pointing according to claim 1.
  • the antenna comprises one or more of the characteristics of claims 2 to 13.
  • the antenna 10 of the figure 1 is a multi-beam antenna with adjustable pointing.
  • this antenna 10 is on board a satellite and more particularly, is mounted on an outer surface of the latter oriented for example towards the Earth.
  • the satellite is for example a geostationary satellite carrying out a telecommunications mission and requiring so-called “gateway” antennas.
  • a telecommunications mission In a manner known per se, such a mission must allow the antenna 10 of the satellite to exchange radio signals with several antennas arranged on the ground.
  • the antenna 10 makes it possible to repoint its beams independently of each other to follow these developments on the ground, as will be explained later.
  • the antenna 10 comprises a single reflection device 12, a plurality of mobile assemblies 14A to 14D, a base 16, a processing module 18 and a piloting module 20.
  • the reflection device 12 has a reflector of any known shape or several reflectors, preferably two, also of known shapes.
  • the reflection device 12 has a single reflector of the centered or simple offset type.
  • the reflection device 12 has two reflectors and is for example of the SFOCA (Side Fed Offset Cassegrain Antenna) type, Gregorian, Cassegrain, splash plate, etc.
  • SFOCA Segmented Fed Offset Cassegrain Antenna
  • the reflection device 12 defines by its geometry a center on its surface and a focus situated outside this surface. This reflection device 12 further defines a focal plane corresponding to the plane containing the focus and perpendicular to the line connecting the focus and the center.
  • the mobile assemblies 14A to 14D are, for example, four in number and make it possible to send and/or receive beams of radioelectric signals coming from different points aimed at on the ground or intended for these points.
  • the base 16 makes it possible to fix the reflection device 12 and the mobile assemblies 14A to 14D to the structure of the satellite and is thus presented in any form suitable for doing so.
  • the base 16 is in the form of a plurality of fixing lugs, each lug being adapted to fix one of the mobile assemblies 14A to 14D or the reflection device 12 to the structure of the satellite.
  • the structure comprises two perpendicular surfaces so that at least some of the fixing lugs are fixed to one of these surfaces and some others to the other surface.
  • the fixing lugs of the mobile assemblies 14A to 14D comprise transmission means necessary in order to transmit radioelectric signals and electric current between these assemblies 14A to 14D and the processing module 18 and the control module 20.
  • the processing module 18 makes it possible to acquire radioelectric signals received by the mobile assemblies 14A to 14D and/or to generate radioelectric signals intended to be transmitted by these assemblies.
  • the processing module 18 comprises electronic components such as amplifiers, a splitter, etc. These components are known per se and will not be described in detail.
  • the control module 20 makes it possible to modify the positions of the mobile assemblies in order to reorient the beams of the antenna 10 according to the points targeted. To do this, the control module 20 is able to control the position of each of the mobile assemblies 14A to 14D and to modify it independently of the other assemblies by transmitting for example a command adapted to this assembly.
  • the control module 20 is, for example, at least partially in the form of a programmable logic circuit or in the form of software. In the latter case, it is implemented by a suitable processor.
  • the mobile assemblies 14A to 14D are substantially identical.
  • FIG. 2 and 3 illustrate such a mobile assembly 14A according to a first embodiment thereof.
  • the mobile assembly 14A comprises a radiating source 22 and a support 24 fixing this source 22 movably to the base 16.
  • the radiating source 22 is for example in the form of a horn for transmitting and/or receiving radioelectric signals elongated along a source axis C.
  • This source axis C is oriented towards the reflection device 12 and in the first embodiment of the assembly 14A, is perpendicular to the focal plane PF in any position of this assembly 14A.
  • the support 24 allows the radiating source 22 to move in a scanning surface coinciding with the focal plane of the reflection device 12.
  • This focal plane is visible on the picture 3 and denoted by the reference "PF" on this picture 3 .
  • the support 24 allows the radiating source 22 to move in the focal plane PF according to two degrees of freedom comprising in the example of the picture 2 two rotations around parallel axes which are perpendicular to the focal plane PF.
  • the primary axis of rotation X 1 is called the primary axis of rotation X 1 and the other is called the secondary axis of rotation X 2 .
  • the primary axis of rotation X 1 is fixed in translation relative to the base 16.
  • the support 24 comprises a forearm 26 which is rotatable with respect to the primary axis of rotation X 1 in a plane of rotation, called plane of lower rotation PI, and a rotating arm 28 with respect to the secondary axis of rotation X 2 in a rotation surface, called upper rotation surface SS.
  • the upper rotation surface SS is disposed between the focal plane PF and the lower rotation plane PI.
  • this upper rotation surface SS has a plane.
  • the forearm 26 is elongated and thus has two ends. One of these ends is rotatably fixed around the primary axis of rotation X 1 on a stator 30 in rigid connection with the base 16. The other end is rotatably fixed around the secondary axis of rotation X 2 at arm 28.
  • the arm 28 is elongated and thus has two ends. One of these ends is rotatably fixed around the axis secondary rotation X 2 to the forearm 26 and the other receives the radiating source 22 in a fixed manner.
  • the longitudinal extents of the arm 28 and the forearm 26 are for example substantially identical as can be seen on the picture 3 . According to another exemplary embodiment, these extents are different and are adapted according to the arrangement of the other mobile assemblies to ensure greater sweeping of the sweeping surface.
  • the support 24 advantageously comprises two motors, one being integrated in the junction between the forearm 26 and the stator 30 and the other in the junction between arm 28 and forearm 26.
  • These motors have, for example, stepper type motors that can be controlled by the control module 20.
  • the commands transmitted by the control module 20 to the assembly 14A correspond to electric currents of suitable voltage.
  • the control module 20 is thus able to supply these motors in an appropriate manner via electric current transmission means, integrated in the stator 30 and the forearm 26.
  • these transmission means have flexible cables in this junction or then comprise an electric rotating joint making it possible to avoid transmission by cable between these components.
  • the support 24 comprises means for transmitting radio signals.
  • These means include, for example, waveguides integrated in the arm 28 and the forearm 26 as well as two radio frequency rotary joints.
  • One of these radio frequency rotary joints is integrated in the junction between the arm 28 and the forearm 26 and the other in the junction between the forearm 26 and the stator 30.
  • each of these radiofrequency rotary joints has a rotary joint of the "groove gap" type, that is to say a rotary joint comprising at least one radioelectric signal transmission channel which is delimited by studs spaced from each other according to a predetermined distance.
  • each of the rotating joints used for the transmission of the radioelectric signals or at least the rotating joint integrated in the junction between the arm 28 and the forearm 26 is configured to allow rotation around the axis corresponding to 360°.
  • a mobile assembly 14A according to a second exemplary embodiment is illustrated in detail on the figure 4 in its different positions A) to D).
  • the mobile assembly 14A according to this embodiment is substantially similar to that described previously.
  • the secondary axis of rotation X 2 is inclined with respect to the primary axis of rotation X 1 , the primary axis of rotation X 1 located at the focus of the reflection device and always remaining perpendicular to the focal plane PF.
  • the angle of inclination of the secondary axis of rotation X 2 is chosen such that in any position of the assembly 14A, the radiating source 22 is oriented towards the center of the reflection device 12. In other words, this angle is chosen so that the source axis C is oriented towards the center of the reflector 12.
  • the radiating source 22 is mobile in a scanning surface tangent to the focal plane at the focus.
  • This scanning surface therefore has a convex surface extending from a single side of the focal plane close to the latter, between the reflection device 12 and this focal plane.
  • the angle of inclination of the secondary axis of rotation X 2 is substantially equal to 4.5°. This value depends on the geometry of the antenna.
  • the forearm 26 comprising the rotatable end around the primary axis of rotation remains rotatable in the lower plane of rotation PI as described above then the upper surface of rotation is different from a plane and corresponds to a conical surface.
  • the upper rotation surface SS is between the scanning surface and the lower rotation plane PI. This then allows arm 28 to rotate independently of forearm 26.
  • the arm 28 and the forearm 26 extend in the same direction and the source axis C coincides with the primary axis of rotation X 1 .
  • arm 28 and forearm 26 extend in perpendicular directions.
  • the source axis C is inclined with respect to the primary axis of rotation X 1 in the plane of the figure and with respect to the secondary axis of rotation X 2 in a plane perpendicular to the figure plane.
  • the source axis C is inclined with respect to the primary axis of rotation X 1 in the plane of the figure and the primary axis of rotation X 1 is inclined with respect to the secondary axis of rotation X 2 in the plane perpendicular to the plane of the figure.
  • the arm 28 and the forearm 26 both extend in the plane of the figure and the source axis C and the secondary axis of rotation X 2 are therefore inclined with respect to the primary axis of rotation X 1 in this plane, the angle of inclination of the source axis C being twice the angle of inclination of the secondary axis of rotation X 2 .
  • a variant of the second embodiment of the mobile assembly 14A is illustrated in the figure 5 .
  • the primary axis of rotation X 1 of the forearm 26 is close to the focus F and therefore does not pass through this focus.
  • the primary axis of rotation X 1 is inclined to aim at the center of the reflector 12.
  • the arrangement of the arm 28 with respect to the forearm 26 remains as has been described in relation to the figure 4 .
  • This variant is particularly advantageous when the primary axis of rotation X 1 of each of the mobile assemblies 14A to 14D is arranged close to the focus, as will be explained later.
  • the two mobile assemblies 14A and 14B are visible. According to this figure, it is clear that the scanning surface described by the sources of these assemblies 14A and 14B presents part of a sphere. Moreover, in the example of this figure 5 , the arm 28 of each of the assemblies 14A, 14B has a length less than that of the corresponding forearm 26 and only the end of the forearm 26 adjacent to the arm 28 is bent. In this case, at least in one position, the arm 28 extends along the bent part of the forearm 26. The arm 28 is therefore rotatable in a plane intersecting the plane of rotation of the forearm 26.
  • each of the assemblies 14A to 14D is constructed in such a way that whatever its position and its axes of rotation, the axis of the source aims at the center of the device reflection.
  • the axis of each source aims at the center of the reflection device 12.
  • N mobile assemblies analogous to the mobile assemblies 14A and 14B of the figure 5 , so that their radiating sources aim at the center of the reflection device and advantageously describe the same scanning surface having part of a sphere.
  • the primary axis of rotation X 1 of this assembly 14A as well as similar assemblies 14B to 14D is disposed far from the focus F.
  • each of these assemblies 14A to 14D and in particular their axes X 1 and X 2 are configured such that the corresponding source axes aim at the center or at a point close to the center of the reflection device.
  • the sources are then mobile over part of a sphere as described above.
  • FIG. 6 and 7 show a possible arrangement of the mobile assemblies 14A to 14D on the base 16 with an eccentric focus.
  • the circle T represents for example on the figure 6 and 7 the image of the earth seen from the focus of the reflecting device. It is thus understood that the eccentricity of the focus F advantageously makes it possible to be able to sweep the whole of the earth.
  • FIG. 8 Another possible arrangement of the movable assemblies 14A to 14D on the base 16 is illustrated in the figure 8 and 9 .
  • the mobile assemblies 14A to 14D are arranged symmetrically around the focus F of the reflection device 12. Furthermore, advantageously, the primary axes of rotation X 1 of these assemblies are arranged as close as possible to this focus. and aim at the center of the reflector.
  • these assemblies 14A to 14D are arranged so that the lower planes of rotation PI of their forearm 26 coincide with each other.
  • the arm 28 of each assembly 14A to 14D is above of the forearm 26 of each assembly 14A to 14D. This then makes it possible to facilitate the respective movements of the corresponding radiating sources 22 in order to scan a greater part of the scanning surface.
  • the figure 8 illustrates the initial positions of these mobile assemblies 14A to 14D during the launch of the satellite, for example.
  • the figure 9 illustrates operational positions of these assemblies. These positions can be changed during the satellite mission. It can then be seen that the present invention has a certain number of advantages.
  • the invention proposes an antenna comprising mobile radiating sources in the focal plane or close to it.
  • the invention makes it possible to modify the positions of these radiating sources independently of one another, thus modifying the pointing of the antenna mechanically.
  • This also makes it possible to use a single reflection device, which makes it possible to considerably reduce the mass and the size of the antenna in the case of passive antennas implementing mechanical pointing.
  • the antenna according to the invention therefore makes it possible to implement flexible pointing without adding heavy and complex components.
  • a multibeam antenna according to a second embodiment will now be described with reference to the figure 10 .
  • This antenna according to the second embodiment is substantially similar to the antenna 10 described previously with the exception of the mobile assemblies.
  • the antenna according to the second embodiment comprises four mobile assemblies 114A to 114D, at least one of which differs from the other assemblies.
  • the assemblies 114B to 114D are identical to the assemblies 14B to 14D described previously and are therefore identical to each other.
  • the assembly 114A differs from each of these assemblies by an end 129 of the arm 128 carrying the radiating source 122.
  • this end has an elongated shape with an extent equal for example to the sum of the transverse extents of the arm and of the forearm, for example of the assembly 114B.
  • the arm 128 and the forearm 126 of the assembly 114A are arranged below the arm and the forearm of each other movable assembly 114B through 114D.
  • the upper rotation surfaces SS and the lower rotation planes PI of the supports of the assemblies 114B to 114D are included between the scanning surface and the upper rotation surface SS and the lower rotation plane PI of the support of the movable assembly 114A.
  • the arm and the forearm of the support of the mobile assembly 114A are arranged below the arms and the forearms of the other mobile assemblies 114B to 114D.
  • the arm 128 of at least one support is placed at the level of the forearm 126 of at least one other support.
  • the reflection device 12 It is for example possible to make the reflection device 12 movable at least according to one degree of freedom. This will make the pointing of the antenna according to the first or the second embodiment even more flexible.
  • At least one radiating source immobile for example at the focal point of the antenna, and to arrange the other mobile radiating sources, for example around this immobile source.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Astronomy & Astrophysics (AREA)
  • General Physics & Mathematics (AREA)
  • Remote Sensing (AREA)
  • Electromagnetism (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Aerials With Secondary Devices (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Support Of Aerials (AREA)

Claims (13)

  1. Mehrstrahlantenne (10) mit einstellbarer Ausrichtung, umfassend eine einzige Reflexionsvorrichtung (12) und eine Vielzahl von Strahlungsquellen (22; 122), die gegenüber der Reflexionsvorrichtung (12) angeordnet und geeignet sind, um Funksignale zu senden und/oder zu empfangen, wobei die Reflexionsvorrichtung (12) einen oder mehrere Reflektoren aufweist, wobei die Reflexionsvorrichtung (12) eine Mitte, eine Brennebene (PF) und einen in dieser Brennebene (PF) liegenden Brennpunkt definiert;
    und mindestens eine der Strahlungsquellen (22; 122), die als bewegliche Quelle bezeichnet wird, im Wesentlichen unabhängig von der oder jeder anderen Strahlungsquelle (22) in einer Abtastfläche beweglich ist, um die Ausrichtung der Antenne (10) einzustellen, wobei die Abtastfläche mit der Brennebene (PF) zusammenfällt oder in dem Brennpunkt tangential zu dieser ist, wobei die Antenne dadurch gekennzeichnet ist, dass die bewegliche Quelle (22; 122) in der Abtastfläche gemäß mindestens zwei Freiheitsgraden beweglich ist,
    jeder der zwei Freiheitsgrade die Drehung um eine Achse umfasst, wobei eine der Achsen als primäre Drehachse (X1) und die andere als sekundäre Drehachse (X2) bezeichnet wird;
    die Antenne ferner umfassend für die oder jede mobile Quelle (22; 122) einen Träger (24), der an einem Sockel (16) befestigt ist und umfassend einen unteren Arm (26; 126), der um die primäre Drehachse (X1) der entsprechenden beweglichen Quelle (22; 122) drehbar ist, und einen Arm (28; 128), der um die sekundäre Drehachse (X2) der entsprechenden beweglichen Quelle (22; 122) drehbar ist und ein Befestigungsende dieser beweglichen Quelle (22; 122) definiert.
  2. Antenne (10) nach Anspruch 1, wobei:
    - die primäre Drehachse (X1) und die sekundäre Drehachse (X2) senkrecht zu der Brennebene (PF) sind, wobei die Abtastfläche dann mit der Brennebene zusammenfällt; oder
    - die primäre Drehachse (X1) senkrecht zur Brennebene (PF) ist und durch den Brennpunkt der Reflexionsvorrichtung (12) verläuft, und die sekundäre Drehachse (X2) in Bezug auf diese Brennebene (PF) geneigt ist, sodass die bewegliche Quelle (22; 122) in jeder Position auf die Mitte der Reflexionsvorrichtung (12) gerichtet ist, wobei die Abtastfläche dann in dem Brennpunkt tangential zu der Brennebene (PF) ist; oder
    - die primäre Drehachse (X1) außerhalb des Brennpunkts liegt, und die primäre Drehachse (X1) und die sekundäre Drehachse (X2) in Bezug auf die Brennebene (PF) geneigt sind, sodass die bewegliche Quelle (22; 122) in jeder Position auf die Mitte der Reflexionsvorrichtung (12) gerichtet ist, wobei die Abtastfläche dann in dem Brennpunkt tangential zu der Brennebene (PF) ist.
  3. Antenne (10) nach Anspruch 1 oder 2, wobei die primäre Drehachse (X1) translationsfest ist.
  4. Antenne (10) nach einem der Ansprüche 1 bis 3, umfassend mehrere bewegliche Quellen (22; 122), die analog zu der beweglichen Quelle (22; 122) sind.
  5. Antenne (10) nach Anspruch 4, wobei die primären Drehachsen (X1) der beweglichen Quellen symmetrisch um den Brennpunkt angeordnet sind.
  6. Antenne (10) nach einem der vorherigen Ansprüche, wobei der oder jeder Träger (24) ferner mindestens einen Schrittmotor umfasst, der geeignet ist, um den unteren Arm (26; 126) oder den Arm (28; 128) dieses Trägers (24) um die entsprechende Achse (X1, X2) in Drehung zu versetzen.
  7. Antenne (10) nach einem der vorherigen Ansprüche, wobei der oder jeder Träger (24) ferner mindestens eine Drehverbindung umfasst, die den unteren Arm (26; 126) mit dem Sockel (16) oder den Arm (28; 128) mit dem unteren Arm (26; 126) dieses Trägers (24) verbindet, wobei die Drehverbindung geeignet ist, Funksignale und/oder elektrischen Strom zwischen diesen Elementen zu übertragen.
  8. Antenne (10) nach Anspruch 7, wobei die oder jede Drehverbindung mindestens einen Kanal zur Übertragung von Funksignalen umfasst, wobei der Übertragungskanal durch eine Vielzahl von voneinander beabstandeten Stiften begrenzt ist.
  9. Antenne (10) nach einem der vorherigen Ansprüche, wobei der Arm (28; 128) des oder jedes Trägers (24) in einer Drehfläche, die als obere Drehfläche (SS) bezeichnet wird, drehbar ist und zumindest ein Teil des unteren Arms (26; 126) dieses Trägers (24) in einer Drehebene, der sogenannten unteren Drehebene (PI), drehbar ist, wobei diese untere Drehebene (PI) parallel zu der Brennebene (PF) ist und diese obere Drehfläche (SS) zwischen der Brennebene (PF) und dieser unteren Drehebene (PI) liegt.
  10. Antenne (10) nach Anspruch 9, wobei, wenn sie mehrere bewegliche Quellen (22; 122) umfasst, die unteren Drehebenen (PI) der unteren Arme von mindestens zwei Trägern (24) miteinander übereinstimmen.
  11. Antenne (10) nach Anspruch 9 oder 10, wobei, wenn sie mehrere bewegliche Quellen (122) umfasst, die obere Drehfläche (SS) und die untere Drehebene (PI) des Arms (128) und des unteren Arms (126) von mindestens einem Träger (24) zwischen der Abtastfläche und der oberen Drehfläche (SS) und der unteren Drehebene (PI) des Arms (128) und des unteren Arms (126) von mindestens einem anderen Träger (24) liegen.
  12. Antenne (10) nach Anspruch 9 oder 10, wobei, wenn sie mehrere bewegliche Quellen (122) umfasst, die obere Drehfläche (SS) des Arms (128) von mindestens einem Träger (24) in der unteren Drehebene (PI) des unteren Arms (126) von mindestens einem anderen Träger (24) enthalten ist.
  13. Antenne (10) nach einem der vorherigen Ansprüche, wobei die Reflexionsvorrichtung (12) beweglich ist.
EP19219746.5A 2018-12-28 2019-12-27 Mehrfachstrahlantenne mit regulierbarer ausrichtung Active EP3675278B1 (de)

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FR1874290A FR3091421B1 (fr) 2018-12-28 2018-12-28 Antenne multifaisceaux à pointage réglable

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US11705630B1 (en) * 2022-04-05 2023-07-18 Maxar Space Llc Antenna with movable feed

Citations (1)

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Publication number Priority date Publication date Assignee Title
EP2065968A1 (de) * 2007-12-01 2009-06-03 FTA Communication Technologies SARL Halterung für Empfangsköpfe einer Parabolantenne

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FR2445040A1 (fr) * 1978-12-22 1980-07-18 Thomson Csf Antenne a balayage conique pour radar, notamment radar de poursuite
JP2693497B2 (ja) * 1988-07-22 1997-12-24 株式会社東芝 機械的ビーム走査アンテナ装置
IT1240810B (it) * 1990-03-28 1993-12-17 Selenia Spazio Spa Ora Alenia Sistema di puntamento fine per antenna a riflettore, particolarmente idoneo per applicazioni spaziali.
US5473335A (en) * 1994-01-11 1995-12-05 Tines; John L. Base support for movable antenna
FR2787926B1 (fr) * 1998-12-23 2001-02-09 Cahors App Elec Procede et dispositif de pointage et de positionnement d'une antenne multisatellite
JP3613280B2 (ja) * 2001-09-28 2005-01-26 住友電気工業株式会社 電波レンズアンテナ装置
TWI431846B (zh) * 2010-10-01 2014-03-21 Wistron Neweb Corp 對位調整裝置及衛星天線
US10249951B2 (en) * 2014-10-02 2019-04-02 Viasat, Inc. Multi-beam bi-focal shaped reflector antenna for concurrent communication with multiple non-collocated geostationary satellites and associated method
US10665929B2 (en) * 2016-04-06 2020-05-26 Macdonald, Dettwiler And Associates Corporation Three axis reflector deployment and pointing mechanism
CN106785444A (zh) * 2016-12-29 2017-05-31 中国电子科技集团公司第五十四研究所 一种双旋臂式龙伯透镜天线
FR3071365B1 (fr) * 2017-09-19 2019-09-06 Thales Antenne biaxe comportant une premiere partie fixe, une deuxieme partie rotative et un joint tournant

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EP2065968A1 (de) * 2007-12-01 2009-06-03 FTA Communication Technologies SARL Halterung für Empfangsköpfe einer Parabolantenne

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US11264695B2 (en) 2022-03-01
ES2932430T3 (es) 2023-01-19
EP3675278A1 (de) 2020-07-01
FR3091421B1 (fr) 2021-04-30
FR3091421A1 (fr) 2020-07-03
CA3066126A1 (fr) 2020-06-28
US20200212534A1 (en) 2020-07-02

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