EP 1330853 A1 20030730 - DOUBLE-BEAM ANTENNA WITH TWO SOURCES
Title (en)
DOUBLE-BEAM ANTENNA WITH TWO SOURCES
Title (de)
DOPPELSTRAHLANTENNE MIT ZWEI QUELLEN
Title (fr)
ANTENNE BI-FAISCEAUX A DEUX SOURCES
Publication
Application
Priority
- FR 0101984 W 20010622
- FR 0008091 A 20000623
Abstract (en)
[origin: WO0199229A1] The invention concerns an antenna comprising a microwave lens (1), having a first source (S1) located proximate to the lens focus and the second source (S2) located at a distance d from the first source, proximate to the plane perpendicular to the focal axis (3). The antenna comprises a polarisation filter prism (41) located on the side of the lens opposite to the sources, the two sources having orthogonal polarisations and the first source (S1) having a polarisation substantially perpendicular to the prism plates. The output profile (71) of the prism can be adapted to compensate aberrations caused by defocusing of the sources. In particular, said profile can be substantially symmetrical relative to a point P passing through the focal axis of the lens, with a convex part and a concave part. The invention is applicable in particular to millimetric radar antennae, such as for example motor vehicle radar
IPC 1-7
IPC 8 full level
H01Q 1/32 (2006.01); H01Q 15/02 (2006.01); H01Q 19/06 (2006.01); H01Q 25/00 (2006.01)
CPC (source: EP)
H01Q 1/3233 (2013.01); H01Q 15/02 (2013.01); H01Q 19/06 (2013.01); H01Q 19/062 (2013.01); H01Q 25/007 (2013.01); H01Q 25/008 (2013.01)
Citation (search report)
See references of WO 0199229A1
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
WO 0199229 A1 20011227; EP 1330853 A1 20030730; FR 2810799 A1 20011228
DOCDB simple family (application)
FR 0101984 W 20010622; EP 01984045 A 20010622; FR 0008091 A 20000623