EP 0308830 B1 19940720 - Antenna system.
Title (en)
Antenna system.
Title (de)
Antennensystem.
Title (fr)
Système d'antennes.
Publication
Application
Priority
JP 23841487 A 19870922
Abstract (en)
[origin: EP0308830A2] An antenna system for transmitting radio waves in the same direction as the direction of arrival of incoming radio waves. The arrival direction is detected by a fast Fourier transform processor (8). The transmitting direction is adjusted by phase-shifting (11) radio waves from a feeder (10) on the basis of the detected arrival direction. Further, signals in the system are transmitted through optical fibers (6) in order to decrease the processing time.
IPC 1-7
IPC 8 full level
G01S 13/74 (2006.01); H01Q 3/26 (2006.01); H01Q 3/34 (2006.01); H01Q 15/02 (2006.01); H01Q 21/30 (2006.01)
CPC (source: EP)
H01Q 3/2647 (2013.01)
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 0308830 A2 19890329; EP 0308830 A3 19900502; EP 0308830 B1 19940720; DE 3850727 D1 19940825; DE 3850727 T2 19950316; JP S6479683 A 19890324
DOCDB simple family (application)
EP 88115247 A 19880916; DE 3850727 T 19880916; JP 23841487 A 19870922