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1. (WO1991006988) MULTIFOCAL RECEIVING ANTENNA WITH A SINGLE PLOTTING DIRECTION FOR SEVERAL SATELLITES
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1991/006988 International Application No.: PCT/FR1990/000785
Publication Date: 16.05.1991 International Filing Date: 31.10.1990
IPC:
H01Q 11/08 (2006.01) ,H01Q 25/00 (2006.01)
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
Q
AERIALS
11
Electrically-long aerials having dimensions more than twice the shortest operating wavelength and consisting of conductive active radiating elements
02
Non-resonant aerials, e.g. travelling-wave aerial
08
Helical aerials
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
Q
AERIALS
25
Aerials or aerial systems providing at least two radiating patterns
Applicants:
THOMSON-LGT LABORATOIRE GENERAL DES TELECOMMUNICATIONS [FR/FR]; 1, rue de l'Hautil F-78700 Conflans-Sainte-Honorine, FR (AllExceptUS)
TELEDIFFUSION DE FRANCE S.A. [FR/FR]; 21-27, rue Barbès F-92120 Montrouge, FR (AllExceptUS)
CLUNIAT, Claude [FR/FR]; FR (UsOnly)
DELMAS, Jean-Jacques [FR/FR]; FR (UsOnly)
Inventors:
CLUNIAT, Claude; FR
DELMAS, Jean-Jacques; FR
Agent:
TURLEQUE, Clotilde; Thomson-CSF SCPI F-92045 Paris-La Défense Cédex 67, FR
Priority Data:
89/1428731.10.1989FR
Title (EN) MULTIFOCAL RECEIVING ANTENNA WITH A SINGLE PLOTTING DIRECTION FOR SEVERAL SATELLITES
(FR) ANTENNE DE RECEPTION MULTIFOCALE A DIRECTION DE POINTAGE UNIQUE POUR PLUSIEURS SATELLITES
Abstract:
(EN) The receiving antenna comprises at least two sectors or areas (1, 2) of paraboloids which focus the radiation on their axes (xx') at points F1 and F2 respectively which are offset by an integer of wavelengths of the received radiation. Each sector or area (1, 2) is linked to a helical source (S1, S2) located in its focal zone (F1, F2) on the same axis as the corresponding sector.
(FR) L'antenne de réception comporte au moins deux secteurs ou parties (1, 2) de paraboloïdes focalisant le rayonnement sur leurs axes (xx') en des points respectivement F1 et F2 décalés d'un nombre entier de longueurs d'onde du rayonnement reçu. Chaque secteur ou partie (1, 2) est associé à une source hélicoïdale (S1, S2) située dans sa zone focale (F1, F2) de même axe que le secteur correspondant.
Designated States: CA, JP, US
Publication Language: French (FR)
Filing Language: French (FR)
Also published as:
US5309167CA2044586