FR2644298A1 - Antenna intended for receiving transmitted radio signals by geostationary satellites - Google Patents

Antenna intended for receiving transmitted radio signals by geostationary satellites Download PDF

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Publication number
FR2644298A1
FR2644298A1 FR8903070A FR8903070A FR2644298A1 FR 2644298 A1 FR2644298 A1 FR 2644298A1 FR 8903070 A FR8903070 A FR 8903070A FR 8903070 A FR8903070 A FR 8903070A FR 2644298 A1 FR2644298 A1 FR 2644298A1
Authority
FR
France
Prior art keywords
spirals
geostationary satellites
triplates
radio signals
reception
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.)
Withdrawn
Application number
FR8903070A
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French (fr)
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.)
MALHANCHE MICHEL
Original Assignee
MALHANCHE MICHEL
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 MALHANCHE MICHEL filed Critical MALHANCHE MICHEL
Priority to FR8903070A priority Critical patent/FR2644298A1/en
Publication of FR2644298A1 publication Critical patent/FR2644298A1/en
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • H01Q21/061—Two dimensional planar arrays
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/0006—Particular feeding systems
    • H01Q21/0037—Particular feeding systems linear waveguide fed arrays
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/16—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole
    • H01Q9/26—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole with folded element or elements, the folded parts being spaced apart a small fraction of operating wavelength
    • H01Q9/27—Spiral antennas

Landscapes

  • Variable-Direction Aerials And Aerial Arrays (AREA)

Abstract

The invention relates to a device enabling signals from one or more geostationary satellites to be received and harnessed without aiming the aerial differently. This device consists of nested Archimedian spirals 1 printed on three-plate supports 2. The signals picked up are channelled via adjustable probes 3 into waveguides 4 and are collected by a main guide 5. The device, according to the invention, is particularly intended for the individual or collective reception of satellite transmissions.

Description

La présente invention concerne une antenne destinée à la reception des signaux radio-électriques émis par les satellites géostationnaires. The present invention relates to an antenna intended for the reception of radioelectric signals emitted by geostationary satellites.

Ces types d'émissions sont actuellement captées à l'aide de para bolides de tailles variables, encombrants et peu esthétiques. Leur angle d'ouverture, èxtrèmement réduit, ne permet pas la réception de signaux provenant de deux ou plusieurs points géographiques diffèrents. Il est nécessaire, pour y satisfaire, de motoriser ces aèriens à l'aide d'un dispositif couteux (moteur, positionneur, monture polaire).De plus, les types d'émissions dans cette bande de fréquences, notemment en matière de télévision directe par satellite, sont polarisées soit linéairement (horizontalement et verticalement), soit circulairement (dextogyre et levogyre); ceci entraine, pour un même paraboloide, soit l'utilisation de plusieurs sources associées à un coupleur, soit l'utilisation de bipolariseurs électriques, et ce, pour chaque bande de fréquence de la ou des sources. Enfin, l'installation de ce type d'antenne nécessite une infrastructure lourde et de sérieuses connaissances pour effectuer un pointage précis. These types of programs are currently captured using para bolides of varying sizes, bulky and unattractive. Their opening angle, extremely reduced, does not allow the reception of signals coming from two or more different geographical points. To meet this requirement, it is necessary to motorize these aircrafts using an expensive device (motor, positioner, pole mount). In addition, the types of emissions in this frequency band, especially in direct television by satellite, are polarized either linearly (horizontally and vertically) or circularly (dextogyre and levogyre); this entails, for the same paraboloid, either the use of several sources associated with a coupler, or the use of electric bipolarizers, and this, for each frequency band of the source (s). Finally, the installation of this type of antenna requires a heavy infrastructure and serious knowledge to perform accurate pointing.

Le dispositif objet de la présente invention permet de s'affranchir des précèdentes contraintes. I1 est basé sur l'utilisation de sources collectrices constituées par des spirales d'Archimède imbriquées à large bande passante et diagramme de rayonnement symètrique. Ces sources sont imprimées aur quatre coins d'éléments carrés constitués en triplaque d'épaisseur adèquate et enroulées en sens inverse l'une par rapport à l'autre, cette disposition permettant la réception et le traitement de toutes les polarisations
L'énergie captée est acheminée du triplaque vers un guide d'ondes, dont la bande passante a été calculée pour valoir 5200 MHZ, via une sonde règlable. Chaque guide d'ondes abouti sur un même guide central collecteur dont une èxtrémité est fermée. L'autre extrèmité est ouverte et comporte une embase permettant la mise en place d'un convertisseur de fréquences, ou'deux à l'aide d'un coupleur.The device which is the subject of the present invention makes it possible to overcome the previous constraints. I1 is based on the use of collecting sources constituted by nested Archimedes spirals with wide pass band and symmetrical radiation diagram. These sources are printed on four corners of square elements formed in triplate of adequate thickness and wound in opposite directions with respect to each other, this arrangement allowing the reception and the processing of all the polarizations.
The energy captured is sent from the triplate to a waveguide, whose bandwidth has been calculated to be 5200 MHZ, via an adjustable probe. Each waveguide terminates on the same central collector guide, one end of which is closed. The other end is open and has a base allowing the installation of a frequency converter, or two using a coupler.

Selon le type d'émissions à exploiter, les diamètres et le nombre d'enroulements des sources peuvent varier. I1 en est de meme pour l'organisation des sources, des triplaques et des guides autour du guide central collecteur.Depending on the type of emissions to be exploited, the diameters and the number of windings of the sources may vary. It is the same for the organization of sources, triplates and guides around the central collector guide.

La figure 1 représente le dispositif inventé dans une de ses configurations. Les sources (1), en présence d'un signal compatible avec leur bande passante l'acheminent via le triplaque (2), la sonde (3), le guide (4).vers le collecteur (5). Il peut ensuite être traité par le convertisseur de fréquences (6).  Figure 1 shows the device invented in one of its configurations. The sources (1), in the presence of a signal compatible with their bandwidth, route it via the triplate (2), the probe (3), the guide (4). To the collector (5). It can then be processed by the frequency converter (6).

Claims (5)

REVENDICATIONS 1) Dispositif destiné à la réception des signaux-électriques émis par les satellites géo-stationnaires caractèrisé en ce qu'il est consitué d'un groupement de spirales d'archimède imbriquées (1) dont la bande passante est large et le diagramme de rayonnement symètrique. 1) Device intended for the reception of the electric signals emitted by geo-stationary satellites characterized in that it is made up of a grouping of nested archimedes spirals (1) whose bandwidth is wide and the radiation diagram symmetrical. 2) Dispositif selon la revendication 1 caractèrisé en ce que les spirales (1) sont groupées par quatre sur des triplaques carrés (2) dont l'épaisseur du diélectrique (7) détermine l'angle d'ouverture ( de 20 à 120 degrés ). 2) Device according to claim 1 characterized in that the spirals (1) are grouped by four on square triplates (2) whose thickness of the dielectric (7) determines the opening angle (from 20 to 120 degrees) . 3) Dispositif selon les revendications 1 et 2 caractèrisé en ce que l'énèrgie collectée par les spirales (1) enroulées en opposition sur les triplaques (2) est acheminée, via des sondes réglables (3), dans des guides d'ondes (4). 3) Device according to claims 1 and 2 characterized in that the energy collected by the spirals (1) wound in opposition on the triplates (2) is conveyed, via adjustable probes (3), in waveguides ( 4). 4) Dispositif selon la revendication 3 caractèrisé en ce que la disposition des spirales (1) sur les triplaques (2) permet le traitement de tous les signaux, quelles que soient leur polarisation. 4) Device according to claim 3 characterized in that the arrangement of the spirals (1) on the triplates (2) allows the processing of all signals, whatever their polarization. 5) Dispositif selon les revendications précèdentes caractèrisé en ce qu'il permet, de part son angle d'ouverture et la disposition des sources, la reception de signaux émis depuis des point diffèrents quelle que soit leur polarisation.  5) Device according to the preceding claims characterized in that it allows, due to its opening angle and the arrangement of the sources, the reception of signals transmitted from different points whatever their polarization.
FR8903070A 1989-03-07 1989-03-07 Antenna intended for receiving transmitted radio signals by geostationary satellites Withdrawn FR2644298A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8903070A FR2644298A1 (en) 1989-03-07 1989-03-07 Antenna intended for receiving transmitted radio signals by geostationary satellites

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8903070A FR2644298A1 (en) 1989-03-07 1989-03-07 Antenna intended for receiving transmitted radio signals by geostationary satellites

Publications (1)

Publication Number Publication Date
FR2644298A1 true FR2644298A1 (en) 1990-09-14

Family

ID=9379510

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8903070A Withdrawn FR2644298A1 (en) 1989-03-07 1989-03-07 Antenna intended for receiving transmitted radio signals by geostationary satellites

Country Status (1)

Country Link
FR (1) FR2644298A1 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0033676A1 (en) * 1980-01-28 1981-08-12 Thomson-Csf Common antenna for primary radar and secondary radar
FR2583927A1 (en) * 1985-06-24 1986-12-26 Hurwic Aleksander Array antenna for transmission and/or reception of electromagnetic waves
US4679249A (en) * 1984-02-15 1987-07-07 Matsushita Electric Industrial Co., Ltd. Waveguide-to-microstrip line coupling arrangement and a frequency converter having the coupling arrangement

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0033676A1 (en) * 1980-01-28 1981-08-12 Thomson-Csf Common antenna for primary radar and secondary radar
US4679249A (en) * 1984-02-15 1987-07-07 Matsushita Electric Industrial Co., Ltd. Waveguide-to-microstrip line coupling arrangement and a frequency converter having the coupling arrangement
FR2583927A1 (en) * 1985-06-24 1986-12-26 Hurwic Aleksander Array antenna for transmission and/or reception of electromagnetic waves

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, vol. AP-29, no. 1, janvier 1981, pages 171-174, IEEE, New York, US; M.A. WEISS: "Microstrip antennas for millimeter waves" *
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, vol. AP-32, no. 8, août 1984, pages 836-840, IEEE, New York, US; H. NAKANO et al.: "Short helical antenna array fed from a waveguide" *
MICROWAVE JOURNAL, vol. 18, no. 12, décembre 1975, page 28; "Millimeter-wave spiral antenna" *
PROCEEDINGS OF THE 1971 EUROPEAN MICROWAVE CONFERENCE, Stockholm, 23-28 août 1971, vol. 1, pages B2/1:1-B2/1:4, The Royal Swedish Academy of Engineering Sciences, Stockholm, SE; R. ERSDAL et al.: "An electronically scanned array antenna with possible application for maritime satellite communications" *

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