EP 0540124 B1 19980114 - Satellite antenna system
Title (en)
Satellite antenna system
Title (de)
Antennensystem für Satelliten-Kommunikation
Title (fr)
Système d'antenne pour communication d'un satellite
Publication
Application
Priority
FI 915134 A 19911030
Abstract (en)
[origin: EP0540124A1] The invention relates to a satellite antenna system particularly for land mobile voice communication, comprising a radiator unit (1') which is steerable to the satellite in the azimuth plane. According to the invention, the satellite antenna system includes a number of antenna elements (1; 1<1> - 1<1><2>), of which the radiator unit (1') is formed, a control unit (4) and a switching unit (5); the antenna elements of the said radiator unit are adjacently arranged and evenly spaced in a circular configuration, and of these antenna elements, two adjacent elements belong simultaneously to one and the same active antenna unit (6), and the said two elements are chosen by means of the control unit and the switching unit to receive circularly polarized electromagnetic radiation from a desired direction, and to transmit the same to essentially the same direction. <IMAGE>
IPC 1-7
IPC 8 full level
H01Q 1/32 (2006.01); H01Q 3/24 (2006.01); H01Q 9/04 (2006.01); H01Q 21/20 (2006.01)
CPC (source: EP)
H01Q 1/3275 (2013.01); H01Q 3/242 (2013.01); H01Q 9/0428 (2013.01); H01Q 21/20 (2013.01)
Designated contracting state (EPC)
BE CH DE DK ES FR GB IT LI NL SE
DOCDB simple family (publication)
EP 0540124 A1 19930505; EP 0540124 B1 19980114; DE 69224033 D1 19980219; DE 69224033 T2 19980813; FI 91028 B 19940114; FI 91028 C 19940425; FI 915134 A0 19911030; FI 915134 A 19930501
DOCDB simple family (application)
EP 92203336 A 19921029; DE 69224033 T 19921029; FI 915134 A 19911030