EP 0310414 A3 19900425 - LENS/POLARIZER/RADOME
Title (en)
LENS/POLARIZER/RADOME
Publication
Application
Priority
US 10377887 A 19871002
Abstract (en)
[origin: EP0310414A2] To modify the antenna pattern of an existing array antenna (12), a unitary assembly made up of a dielectric lens (13) of appropriate shape, a horizontal polarization filter (17), a circular polarizer (19) and absorbing material (21,23,24) are disposed to cover the aperture of the existing array antenna (12). A quarter-wave matching element (15) is provided on the transmission faces of the lens (13). The circular polarizer (19) is made of five layers of dielectric material, each layer being provided with a directional pattern of metallic meander lines (19a, 19b, 19c, 19d, 19e).
IPC 1-7
IPC 8 full level
H01Q 1/42 (2006.01); H01Q 15/24 (2006.01); H01Q 17/00 (2006.01); H01Q 19/06 (2006.01)
CPC (source: EP)
H01Q 1/425 (2013.01); H01Q 15/244 (2013.01); H01Q 17/001 (2013.01); H01Q 19/06 (2013.01)
Citation (search report)
- [X] EP 0131328 A1 19850116 - RADIOTECHNIQUE COMPELEC [FR], et al
- [Y] FR 2373891 A1 19780707 - GEN DYNAMICS CORP [US]
- [A] US 4342034 A 19820727 - MONSER GEORGE J
- [AP] EP 0280379 A2 19880831 - SUGIO YOSHIHIKO [JP], et al
- [A] US 3611392 A 19711005 - KNOX DENNIS MURDOCH
- [A] EP 0044502 A1 19820127 - SIEMENS AG [DE]
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 0310414 A2 19890405; EP 0310414 A3 19900425; EP 0310414 B1 19940601; AU 2292388 A 19890406; AU 618281 B2 19911219; CA 1304155 C 19920623; DE 3889834 D1 19940707; DE 3889834 T2 19950105
DOCDB simple family (application)
EP 88309094 A 19880930; AU 2292388 A 19880929; CA 578627 A 19880928; DE 3889834 T 19880930