FR2603741A1 - Systeme d'antenne directionnelle en azimut, a diagramme cosecante et couverture hemispherique - Google Patents

Systeme d'antenne directionnelle en azimut, a diagramme cosecante et couverture hemispherique

Info

Publication number
FR2603741A1
FR2603741A1 FR8612483A FR8612483A FR2603741A1 FR 2603741 A1 FR2603741 A1 FR 2603741A1 FR 8612483 A FR8612483 A FR 8612483A FR 8612483 A FR8612483 A FR 8612483A FR 2603741 A1 FR2603741 A1 FR 2603741A1
Authority
FR
France
Prior art keywords
radiation
sources
reflector
source
antenna system
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.)
Granted
Application number
FR8612483A
Other languages
English (en)
Other versions
FR2603741B1 (fr
Inventor
Jean Choquer
Mostafa Jelloul
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.)
APPLIC RECH ELECTRONIQUE
Original Assignee
APPLIC RECH ELECTRONIQUE
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 APPLIC RECH ELECTRONIQUE filed Critical APPLIC RECH ELECTRONIQUE
Priority to FR8612483A priority Critical patent/FR2603741B1/fr
Publication of FR2603741A1 publication Critical patent/FR2603741A1/fr
Application granted granted Critical
Publication of FR2603741B1 publication Critical patent/FR2603741B1/fr
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H01Q3/242—Circumferential scanning
    • 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
    • H01Q19/102—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 of convex toroïdal shape

Landscapes

  • Variable-Direction Aerials And Aerial Arrays (AREA)

Abstract

LE SYSTEME D'ANTENNE DE L'INVENTION COMPREND UN RESEAU CIRCULAIRE DE 2N SOURCES 10 APTES A EMETTRE OU RECEVOIR UN RAYONNEMENT ELECTROMAGNETIQUE, PARMI LESQUELLES 2N SONT ALIMENTEES PAR UN SYSTEME COMMUTABLE 40 DE MANIERE A PROCURER, EN AZIMUT, UN DIAGRAMME DE RAYONNEMENT PRESENTANT UN LOBE PRINCIPAL ORIENTE EN FONCTION DU CHOIX DES SOURCES ALIMENTEES; AU CENTRE DE CE RESEAU, UN REFLECTEUR PRINCIPAL 30 EN FORME DE SURFACE DE REVOLUTION, RECEVANT LE RAYONNEMENT DES SOURCES ALIMENTEES ET RENVOYANT CELUI-CI DANS LA DIRECTION CHOISIE. SELON L'INVENTION, LA SURFACE DU REFLECTEUR PRINCIPAL EST ENGENDREE PAR UNE MERIDIENNE DEFINIE DE MANIERE A PROCURER, EN SITE, UN DIAGRAMME DE RAYONNEMENT COSECANTE; CHAQUE SOURCE EST POURVUE D'UN REFLECTEUR PRIMAIRE 20 AYANT, EN PLAN, UNE SECTION ELLIPTIQUE, LES DEUX FOYERS DE L'ELLIPSE F, F ETANT SENSIBLEMENT SITUES L'UN A L'ENDROIT DE LA SOURCE ET L'AUTRE EN UN POINT DE LA SURFACE DU REFLECTEUR EN VIS-A-VIS DE CETTE SOURCE,DE MANIERE A FOCALISER LE RAYONNEMENT DE LA SOURCE INDIVIDUELLE SUR UN SECTEUR DE FAIBLE LARGEUR DU REFLECTEUR PRINCIPAL; ET LA LOI D'ALIMENTATION EN PHASE DES 2N SOURCES EST CHOISIE DE MANIERE A METTRE EN PHASE LE RAYONNEMENT APRES REFLEXION SUR LES 2N SECTEURS RESPECTIFS DU REFLECTEUR PRINCIPAL.
FR8612483A 1986-09-05 1986-09-05 Systeme d'antenne directionnelle en azimut, a diagramme cosecante et couverture hemispherique Expired FR2603741B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8612483A FR2603741B1 (fr) 1986-09-05 1986-09-05 Systeme d'antenne directionnelle en azimut, a diagramme cosecante et couverture hemispherique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8612483A FR2603741B1 (fr) 1986-09-05 1986-09-05 Systeme d'antenne directionnelle en azimut, a diagramme cosecante et couverture hemispherique

Publications (2)

Publication Number Publication Date
FR2603741A1 true FR2603741A1 (fr) 1988-03-11
FR2603741B1 FR2603741B1 (fr) 1988-12-09

Family

ID=9338726

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8612483A Expired FR2603741B1 (fr) 1986-09-05 1986-09-05 Systeme d'antenne directionnelle en azimut, a diagramme cosecante et couverture hemispherique

Country Status (1)

Country Link
FR (1) FR2603741B1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5247843A (en) * 1990-09-19 1993-09-28 Scientific-Atlanta, Inc. Apparatus and methods for simulating electromagnetic environments
EP0865101A1 (fr) * 1997-03-12 1998-09-16 Space Engineering S.P.A. Antenne réflecteur conformée pour la couverture d'un secteur

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1392013A (fr) * 1964-01-31 1965-03-12 Nouveaux aériens pour micro-ondes
US3887926A (en) * 1973-11-14 1975-06-03 Singer Co Phased array scanning antenna

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1392013A (fr) * 1964-01-31 1965-03-12 Nouveaux aériens pour micro-ondes
US3887926A (en) * 1973-11-14 1975-06-03 Singer Co Phased array scanning antenna

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
AP-S INTERNATIONAL SYMPOSIUM, 15-19 mai 1978, 1978 International Symposium Digest - ANTENNAS and PROPAGATION, pages 118-121, IEEE, Maryland, US; C.A.CHUANG et al.: "A new multiple-beam antenna for 360 degree coverage" *
ELECTRONICS LETTERS, vol. 15, no. 20, 27 septembre 1979, pages 639-640, I.E.E., Hitchin, Herts., GB; H.THIELEN: "Omnidirectional S.H.F. antenna consisting of horn radiators and plane reflectors" *
NACHRICHTENTECHNISCHE ZEITSCHRIFT, vol. 29, no. 3, 1976, pages 233-234, V.D.E. Berlin, DE; G.F.KOCH et al.: "Kosekansantenne f}r das 12-GHz-Fernseherprobungsnetz der DBP" *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5247843A (en) * 1990-09-19 1993-09-28 Scientific-Atlanta, Inc. Apparatus and methods for simulating electromagnetic environments
EP0865101A1 (fr) * 1997-03-12 1998-09-16 Space Engineering S.P.A. Antenne réflecteur conformée pour la couverture d'un secteur

Also Published As

Publication number Publication date
FR2603741B1 (fr) 1988-12-09

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Legal Events

Date Code Title Description
TP Transmission of property
ST Notification of lapse