EP 0275062 A2 19880720 - Multibeam antenna.
Title (en)
Multibeam antenna.
Title (de)
Mehrstrahlantenne.
Title (fr)
Antenne à faisceaux multiples.
Publication
Application
Priority
- JP 453587 A 19870112
- JP 975387 A 19870119
Abstract (en)
A multibeam antenna capable of communicating with a plurality of satellites on stationary orbits at the same time includes a single main reflector (22), and a plurality of primary radiators (24, 26) for radiating electromagnetic waves toward the main reflector. The main reflector is constituted by the same number of partial reflectors (22A, 22B) as the primary radiators, the partial reflectors being joined to each other. Each of the partial reflectors is defined by a part of a different one of paraboloids which are different in the position of focus from each other. The primary reflectors are located at the positions of individual focuses (Fa, Fb). A subreflector is disposed between the main reflector and the positions of focuses and made up of a plurality of curved portions and a single flat portion.
IPC 1-7
IPC 8 full level
H01Q 19/19 (2006.01); H01Q 25/00 (2006.01)
CPC (source: EP)
H01Q 19/19 (2013.01); H01Q 25/007 (2013.01)
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 0275062 A2 19880720; EP 0275062 A3 19891011; EP 0275062 B1 19931103; AU 1016988 A 19880714; AU 605227 B2 19910110; CA 1296422 C 19920225; DE 3885308 D1 19931209
DOCDB simple family (application)
EP 88100249 A 19880111; AU 1016988 A 19880111; CA 556203 A 19880111; DE 3885308 T 19880111