EP 0669674 A1 19950830 - Device for camouflaging antennas.
Title (en)
Device for camouflaging antennas.
Title (de)
Vorrichtung zur Tarnung von Antennen.
Title (fr)
Dispositif de camouflage d'antennes.
Publication
Application
Priority
DE 4405996 A 19940224
Abstract (en)
The cloaking device uses an electromagnetically non-reciprocal component, arranged in the path of the incident microwaves in front of the antenna. The non-reciprocal component has 2 polarisation layers offset relative to one another by 45 degrees. Pref. the non-reciprocal component is provided by a radome at a given spacing from the antenna, having a magneto-optical layer (4) enclosed by an annular magnet (5), with a polarisation layer on each side of the magneto-optical layer, exhibiting a high transparency for a given linear polarisation direction and a high absorption for the perpendicular polarisation direction.
Abstract (de)
Die Vorrichtung zur Tarnung von Antennen gegen die Ortung durch Mikrowellen besteht aus einem elektromagnetisch nicht-reziproken Bauelement, das in Einfallsrichtung der Mikrowellen gesehen, vor der Antenne angeordnet ist. <IMAGE>
IPC 1-7
IPC 8 full level
H01Q 15/00 (2006.01); H01Q 15/14 (2006.01); H01Q 15/22 (2006.01); H01Q 17/00 (2006.01)
CPC (source: EP)
H01Q 15/0013 (2013.01); H01Q 15/148 (2013.01); H01Q 15/22 (2013.01); H01Q 17/007 (2013.01)
Citation (search report)
- [A] US 3309704 A 19670314 - KLINGLER EUGENE H
- [A] EP 0517976 A1 19921216 - RAYTHEON CO [US]
- [A] WO 9010958 A1 19900920 - CAMBRIDGE COMPUTER [GB]
- [A] GB 1416343 A 19751203 - SECR DEFENCE
- [A] EP 0568511 A1 19931103 - NOBELTECH ELECTRONICS AB [SE]
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
EP 0669674 A1 19950830; EP 0669674 B1 19990224; DE 4405996 A1 19950831; DE 4405996 C2 19960111; DE 59407846 D1 19990401
DOCDB simple family (application)
EP 94119638 A 19941213; DE 4405996 A 19940224; DE 59407846 T 19941213