Global Patent Index - EP 0139482 A2

EP 0139482 A2 19850502 - Scanning dual reflector antenna.

Title (en)

Scanning dual reflector antenna.

Title (de)

Doppelreflektorabtastantenne.

Title (fr)

Antenne double réflecteur à balayage.

Publication

EP 0139482 A2 19850502 (EN)

Application

EP 84306454 A 19840921

Priority

GB 8325386 A 19830922

Abstract (en)

An antenna system, on a spacecraft for example, comprises a movable reflector dish so that the antenna pointing direction can be varied or scanned and a fixed feed. To reduce separation of the feed from the focal point of the dish during such scanning, the feed is positioned at the point about which the dish is movable and is directed towards a convex auxiliary dish fixed to and movable with the main dish and producing a virtual image of the feed at the focal point of the main dish.

IPC 1-7

H01Q 3/20

IPC 8 full level

H01Q 3/08 (2006.01); H01Q 3/20 (2006.01)

CPC (source: EP)

H01Q 3/20 (2013.01)

Designated contracting state (EPC)

DE FR GB

DOCDB simple family (publication)

EP 0139482 A2 19850502; EP 0139482 A3 19860716; JP S6089104 A 19850520

DOCDB simple family (application)

EP 84306454 A 19840921; JP 19696684 A 19840921