FR2952759B1 - ANTENNA TO REFLECTORS AND FOCAL NETWORK - Google Patents

ANTENNA TO REFLECTORS AND FOCAL NETWORK

Info

Publication number
FR2952759B1
FR2952759B1 FR0958053A FR0958053A FR2952759B1 FR 2952759 B1 FR2952759 B1 FR 2952759B1 FR 0958053 A FR0958053 A FR 0958053A FR 0958053 A FR0958053 A FR 0958053A FR 2952759 B1 FR2952759 B1 FR 2952759B1
Authority
FR
France
Prior art keywords
reflector
array
sub
source
elementary
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.)
Active
Application number
FR0958053A
Other languages
French (fr)
Other versions
FR2952759A1 (en
Inventor
Nelson Fonseca
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.)
Centre National dEtudes Spatiales CNES
Original Assignee
Centre National dEtudes Spatiales CNES
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 Centre National dEtudes Spatiales CNES filed Critical Centre National dEtudes Spatiales CNES
Priority to FR0958053A priority Critical patent/FR2952759B1/en
Publication of FR2952759A1 publication Critical patent/FR2952759A1/en
Application granted granted Critical
Publication of FR2952759B1 publication Critical patent/FR2952759B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • H01Q15/147—Reflecting surfaces; Equivalent structures provided with means for controlling or monitoring the shape of the reflecting surface
    • 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
    • H01Q15/148—Reflecting surfaces; Equivalent structures with means for varying the reflecting properties
    • 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
    • H01Q19/17—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 the primary radiating source comprising two or more radiating elements
    • 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
    • H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
    • 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
    • H01Q3/46—Active lenses or reflecting arrays

Landscapes

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

Abstract

L'invention concerne une antenne à réflecteurs et réseau focal pour la couverture d'une zone géographique choisie comprenant : un réflecteur principal comprenant une surface réfléchissante parabolique ou quasi-parabolique ; un sous-réflecteur comprenant une surface réfléchissante de forme initiale plane ; un réseau d'au moins deux sources élémentaires agencées et positionnées de manière à émettre et/ou recevoir des ondes électromagnétiques, le réseau étant placé dans le plan focal du réflecteur principal ; des moyens de contrôle des sources permettant de sélectionner parmi les sources élémentaires, la ou les source(s) élémentaire(s) adaptée(s) pour réaliser la couverture choisie ; dans laquelle le réflecteur principal et le sous-réflecteur sont agencés l'un par rapport à l'autre de manière à réfléchir un ou plusieurs signal/signaux issu(s) du réseau de sources et/ou destiné(s) au réseau de sources, le sous-réflecteur étant en outre adapté à dépointer et/ou déformer le faisceau issu de ou destiné à la ou les source(s) élémentaire(s) sélectionnée(s) pour produire un spot proche de la couverture choisie, réduisant ainsi les contraintes liées au dépointage au niveau du sous-réflecteur.The invention relates to an antenna with reflectors and a focal array for the coverage of a selected geographical area comprising: a main reflector comprising a parabolic or quasi-parabolic reflecting surface; a sub-reflector comprising a reflecting surface of initially planar shape; an array of at least two elementary sources arranged and positioned so as to emit and / or receive electromagnetic waves, the array being placed in the focal plane of the main reflector; source control means making it possible to select, from among the elementary sources, the elementary source (s) suitable for providing the chosen coverage; wherein the main reflector and the sub-reflector are arranged relative to each other so as to reflect one or more signal (s) from the source array and / or intended for the source array , the sub-reflector being further adapted to offset and / or deform the beam coming from or intended for the elementary source (s) selected to produce a spot close to the chosen coverage, thus reducing the constraints related to the offset at the level of the sub-reflector.

FR0958053A 2009-11-16 2009-11-16 ANTENNA TO REFLECTORS AND FOCAL NETWORK Active FR2952759B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR0958053A FR2952759B1 (en) 2009-11-16 2009-11-16 ANTENNA TO REFLECTORS AND FOCAL NETWORK

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0958053A FR2952759B1 (en) 2009-11-16 2009-11-16 ANTENNA TO REFLECTORS AND FOCAL NETWORK

Publications (2)

Publication Number Publication Date
FR2952759A1 FR2952759A1 (en) 2011-05-20
FR2952759B1 true FR2952759B1 (en) 2011-12-16

Family

ID=42224094

Family Applications (1)

Application Number Title Priority Date Filing Date
FR0958053A Active FR2952759B1 (en) 2009-11-16 2009-11-16 ANTENNA TO REFLECTORS AND FOCAL NETWORK

Country Status (1)

Country Link
FR (1) FR2952759B1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016088126A1 (en) * 2014-12-05 2016-06-09 Nsl Comm Ltd System, device and method for tuning a remote antenna

Also Published As

Publication number Publication date
FR2952759A1 (en) 2011-05-20

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