Patent ID: 9065173
Filing Date: 2015-06-23
Classification: H01Q

Abstract:
1. A multiple-reflector antenna for telecommunications satellites including a shaft, to which are attached at least two sub-reflectors, rotating in relation to a load-bearing structure, and a motor including a rotor able to drive the shaft in rotation, and a stator attached to the load-bearing structure, the multiple-reflector antenna further comprising: two bearings enabling the shaft to rotate in relation to the load-bearing structure, the sub-reflectors being attached to the shaft between the two bearings, a torsionally rigid mechanical filter, placed between the shaft and the rotor, enabling the rotor to transmit the rotational movement to the shaft, that is able to absorb the alignment errors between the rotor and the shaft, and able to dampen the stresses generated by the shaft on the motor, locking means able to hold the angular position of the shaft in relation to the load-bearing structure, in a first stored arrangement being stowed, and to use the motor to release the shaft to enable it to rotate, in an operational arrangement referred to as “unstowed”.