H - Electricity – 01 – Q
Patent
H - Electricity
01
Q
351/1
H01Q 15/16 (2006.01) H01Q 1/12 (2006.01) H01Q 1/18 (2006.01)
Patent
CA 1156754
ABSTRACT OF THE DISCLOSURE This invention relates to a correction method for transverse defocussing of a paraboloid oriented relative to the source initially aligned with the focus. The paraboloid is secured to a first platform which is articulated by hinges joined to a second platform. The second platform is itself articulated through further hinges joined to a stationary part, and the hinges are then oriented to the focus by moving the platforms. Movement of the platforms are servocontrolled responsive to a pointing error detector to permanently hold the focus close to the source. A parabolic antenna is also provided fox carrying out the method. The system is applied to radio and TV broadcast apparatus aboard satellites to provide an improved method of correcting transverse defocalization.
365921
Aerospatiale Societe Nationale Industrielle
George H. Riches And Associates
LandOfFree
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