Title:
衛星ビームを多重受信するための連続反射器をもつアンテナ
Document Type and Number:
Japanese Patent JP4207390
Kind Code:
B2
Abstract:
An antenna receives beams from telecommunication satellites in geostationary orbit close to the equator. The continuous concave reflecting surface of the reflector of the antenna has an equation deduced from a paraboloid by adding thereto the equation of a correction surface comprising a second order polynomial and a sum of N(2N-1) terms depending on distances between the projection of any point on the reflecting surface and N(2N-1) control points of a grid extending over a plane perpendicular to the plane of symmetry. The angular separation of the primary sources on a circular support with an inclination different from the angle of offset is less than approximately 3° for an aperture of more than 50°.
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Inventors:
Kuzan Pascal
Desville Jean-Louis
Brojan-Pierre
Derma Jean-Jack
Desville Jean-Louis
Brojan-Pierre
Derma Jean-Jack
Application Number:
JP2000616092A
Publication Date:
January 14, 2009
Filing Date:
April 28, 2000
Export Citation:
Assignee:
FRANCE TELECOM
International Classes:
H01Q15/16; H01Q3/16; H01Q3/18; H01Q13/02; H01Q19/12; H01Q19/17; H01Q25/00; H01Q25/04
Domestic Patent References:
| JP10229309A | ||||
| JP11027037A | ||||
| JP5085110U | ||||
| JP8228108A | ||||
| JP10041737A | ||||
| JP10163737A |
Foreign References:
| US5175562 | ||||
| EP0700118A1 |
Attorney, Agent or Firm:
Keiichi Yamamoto