Global Patent Index - EP 0976173 A1

EP 0976173 A1 2000-02-02 - MICROWAVE REFLECTOR ANTENNA

Title (en)

MICROWAVE REFLECTOR ANTENNA

Title (de)

MIKROWELLEN-REFLEKTORANTENNE

Title (fr)

ANTENNE A HYPERFREQUENCES A REFLECTEUR

Publication

EP 0976173 A1 (DE)

Application

EP 99907317 A

Priority

  • DE 9900354 W
  • DE 19806887 A
  • DE 19848722 A

Abstract (en)

[origin: WO9943049A1] A reflector antenna for polarised microwaves has a primary radiator, a subreflector transparent to microwaves of a desired polarisation and a main reflector for reflecting bundled microwaves with a polarisation rotated in the desired direction. The reflector antenna is characterised in that the main reflector is formed by a number of dipoles lying in a plane and having parallel axes inclined at an angle of about 45 DEG with respect to the vector of the incident electrical field. The dipoles are sized in such a way that an 180 DEG phase shift is produced between the reflected electrical field components parallel and perpendicular to the corresponding dipole axis. In addition, the phase of the resultant reflected electrical field is shifted with respect to the phase of the incident electrical field of each dipole in such a way that the total field generated by all dipoles presents even wave fronts.

IPC 1-7 (main, further and additional classification)

H01Q 19/195; H01Q 3/46; H01Q 15/22

IPC 8 full level (invention and additional information)

H01Q 3/46 (2006.01); H01Q 15/22 (2006.01); H01Q 19/185 (2006.01); H01Q 19/195 (2006.01)

CPC (invention and additional information)

H01Q 19/185 (2013.01); H01Q 3/46 (2013.01); H01Q 15/22 (2013.01); H01Q 19/195 (2013.01)

Citation (search report)

See references of WO 9943049A1

Designated contracting state (EPC)

AT BE CH DE DK ES FI FR GB IT LI NL SE

EPO simple patent family

WO 9943049 A1 19990826; EP 0976173 A1 20000202; EP 0976173 B1 20120926

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