Abstract: A device for transmitting radio waves comprises an item of transmitting equipment for a telecommunications antenna, a membrane for thermally protecting the reflector, and means for attaching the thermal protection membrane to the item of equipment. The thermal protection membrane is furnished with a plurality of elastic tensioners designed to keep the thermal protection membrane stretched between a first active face of the item of transmitting equipment and space, irrespective of the thermal expansions of the membrane. The item of transmitting equipment occurs in a predetermined temperature range when the attachment means attach the membrane to the item of transmitting equipment.

Abstract: In the field of satellite communications and more particularly to a multi-beam antenna system for the coverage of a given geographical region broken down into several spots on the ground, a radio frequency feed block comprises several radio frequency chains intended to transmit or to receive an electromagnetic wave in the direction of a reflector and waveguides connected to outputs of the chains, characterized in that it comprises a plate inside which the waveguides are made, and to which the radio frequency chains are fastened. A satellite comprising a feed block is also provided.

Abstract: A device for transmitting radio waves comprises an item of transmitting equipment for a telecommunications antenna, a membrane for thermally protecting the reflector, and means for attaching the thermal protection membrane to the item of equipment. The thermal protection membrane is furnished with a plurality of elastic tensioners designed to keep the thermal protection membrane stretched between a first active face of the item of transmitting equipment and space, irrespective of the thermal expansions of the membrane. The item of transmitting equipment occurs in a predetermined temperature range when the attachment means attach the membrane to the item of transmitting equipment.