FR2952758B1 - ANTENNA TO REFLECTOR (S) AND POWER SUPPLY NETWORK - Google Patents

ANTENNA TO REFLECTOR (S) AND POWER SUPPLY NETWORK

Info

Publication number
FR2952758B1
FR2952758B1 FR0958050A FR0958050A FR2952758B1 FR 2952758 B1 FR2952758 B1 FR 2952758B1 FR 0958050 A FR0958050 A FR 0958050A FR 0958050 A FR0958050 A FR 0958050A FR 2952758 B1 FR2952758 B1 FR 2952758B1
Authority
FR
France
Prior art keywords
reflector
chosen
coverage
sub
main reflector
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.)
Expired - Fee Related
Application number
FR0958050A
Other languages
French (fr)
Other versions
FR2952758A1 (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 FR0958050A priority Critical patent/FR2952758B1/en
Publication of FR2952758A1 publication Critical patent/FR2952758A1/en
Application granted granted Critical
Publication of FR2952758B1 publication Critical patent/FR2952758B1/en
Expired - Fee Related 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
    • 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

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 réflecteur(s) et réseau d'alimentation pour la couverture d'une zone géographique choisie comprenant : un réflecteur principal comprenant une surface réfléchissante formée à partir d'une surface initiale de type parabolique ; un réseau d'au moins deux sources élémentaires agencées et positionnées de manière à émettre et/ou recevoir des ondes électromagnétiques dans des directions choisies, le réseau étant placé dans le plan focal caractérisant la forme parabolique initiale du réflecteur principal ; des moyens de contrôle en amplitude et/ou phase des sources élémentaires ; dans laquelle, la surface réfléchissante du réflecteur principal est conformée de manière tridimensionnelle de façon à : (i) réfléchir chaque faisceau délivré par chaque source en étalant son énergie de sorte qu'il couvre la zone géographique choisie ; (ii) ce que le diagramme de rayonnement de chaque source définisse plusieurs sous-zones, intersection de la zone globale à couvrir avec des couverture concentriques les unes aux autres, les sous-zones étant caractérisées par une contrainte en gain qui croit à mesure que la sous-zone s'éloigne du centre de la zone géographique choisie à couvrir, la couverture choisie étant enfin réalisée par une combinaison du rayonnement de toutes les sources.The invention relates to an antenna with reflector (s) and feed network for the coverage of a selected geographical area comprising: a main reflector comprising a reflecting surface formed from an initial surface of the parabolic type; an array of at least two elementary sources arranged and positioned so as to emit and / or receive electromagnetic waves in selected directions, the array being placed in the focal plane characterizing the initial parabolic shape of the main reflector; means for controlling the amplitude and / or phase of the elementary sources; in which, the reflecting surface of the main reflector is shaped three-dimensionally so as to: (i) reflect each beam delivered by each source by spreading its energy so that it covers the chosen geographical area; (ii) that the radiation pattern of each source defines several sub-areas, intersection of the overall area to be covered with concentric coverage to each other, the sub-areas being characterized by a gain constraint which increases as the sub-area moves away from the center of the geographical area chosen to be covered, the chosen coverage finally being achieved by a combination of the radiation from all the sources.

FR0958050A 2009-11-16 2009-11-16 ANTENNA TO REFLECTOR (S) AND POWER SUPPLY NETWORK Expired - Fee Related FR2952758B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR0958050A FR2952758B1 (en) 2009-11-16 2009-11-16 ANTENNA TO REFLECTOR (S) AND POWER SUPPLY NETWORK

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0958050A FR2952758B1 (en) 2009-11-16 2009-11-16 ANTENNA TO REFLECTOR (S) AND POWER SUPPLY NETWORK

Publications (2)

Publication Number Publication Date
FR2952758A1 FR2952758A1 (en) 2011-05-20
FR2952758B1 true FR2952758B1 (en) 2012-02-24

Family

ID=42218283

Family Applications (1)

Application Number Title Priority Date Filing Date
FR0958050A Expired - Fee Related FR2952758B1 (en) 2009-11-16 2009-11-16 ANTENNA TO REFLECTOR (S) AND POWER SUPPLY NETWORK

Country Status (1)

Country Link
FR (1) FR2952758B1 (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2648278A1 (en) * 1989-06-13 1990-12-14 Europ Agence Spatiale Antenna with switchable beams
US7161549B1 (en) * 2003-09-30 2007-01-09 Lockheed Martin Corporation Single-aperture antenna system for producing multiple beams
FR2888674B1 (en) * 2005-07-13 2009-10-23 Alcatel Sa NETWORK ANTENNA WITH REFLECTOR (S) CONFORMING (S), HAVING HIGH RECONFIGURABILITY IN ORBIT

Also Published As

Publication number Publication date
FR2952758A1 (en) 2011-05-20

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