EP 0006391 B1 19831116 - PERISCOPIC FEED SYSTEM FOR TWO-BAND ANTENNA
Title (en)
PERISCOPIC FEED SYSTEM FOR TWO-BAND ANTENNA
Publication
Application
Priority
FR 7818408 A 19780620
Abstract (en)
[origin: US4260993A] A dual-band antenna for the transmission and reception of radiant energy has a Cassegrain-type reflector assembly, rotatable about an azimuth axis and pivotable about an elevational axis, to which two outgoing beams are directed in a transmitting mode by a periscopic supply system including a set of four mirrors, two of them flat and two of them concave. The lower-band beam originates at a first feed comprising a horizontally radiating horn and two confronting concave mirrors, one of these mirrors training the beam onto a slanting dichroic mirror reflecting same upward into the periscopic supply system. The higher-band beam originates at a second feed also comprising a horizontal horn which radiates onto a concave mirror reflecting the beam upward through the dichroic mirror into the periscopic supply system along a path coinciding with that of the other beam.
IPC 1-7
IPC 8 full level
H01Q 5/00 (2006.01); H01Q 5/45 (2015.01); H01Q 15/00 (2006.01); H01Q 19/19 (2006.01)
CPC (source: EP US)
H01Q 5/45 (2015.01 - EP US); H01Q 15/0033 (2013.01 - EP US); H01Q 19/191 (2013.01 - EP US)
Designated contracting state (EPC)
DE GB IT NL SE
DOCDB simple family (publication)
EP 0006391 A1 19800109; EP 0006391 B1 19831116; DE 2966404 D1 19831222; FR 2429505 A1 19800118; FR 2429505 B1 19811120; US 4260993 A 19810407
DOCDB simple family (application)
EP 79400411 A 19790620; DE 2966404 T 19790620; FR 7818408 A 19780620; US 4950579 A 19790618