A satellite comprising: a chassis ; a radiating antenna comprising: radiating elements ; amplifiers associated with the radiating elements; a base , on which the radiating elements and the amplifiers are mounted, the base being configured to support the radiating elements and the amplifiers and to discharge heat emitted by the radiating elements and/or the amplifiers while they are operating, the base comprising at least one fixed panel fixed to the chassis and at least one deployable panel hinged to the first panel, each of the panels supporting at least one of the radiating elements and an amplifier; and a two-phase loop , in which a fluid circulates and which is configured to recover the heat and transferred to the base, the two-phase loop comprising: two portions , each fixed to one of the two panels of the base; and flexible connections comprising at least one flexible thermal channel and connecting the portions of the two-phase loop, with the fluid circulating in the at least one flexible thermal channel. a chassis ; a radiating antenna comprising: radiating elements ; amplifiers associated with the radiating elements; a base , on which the radiating elements and the amplifiers are mounted, the base being configured to support the radiating elements and the amplifiers and to discharge heat emitted by the radiating elements and/or the amplifiers while they are operating, the base comprising at least one fixed panel fixed to the chassis and at least one deployable panel hinged to the first panel, each of the panels supporting at least one of the radiating elements and an amplifier; and a two-phase loop , in which a fluid circulates and which is configured to recover the heat and transferred to the base, the two-phase loop comprising: two portions , each fixed to one of the two panels of the base; and flexible connections comprising at least one flexible thermal channel and connecting the portions of the two-phase loop, with the fluid circulating in the at least one flexible thermal channel. radiating elements ; amplifiers associated with the radiating elements; a base , on which the radiating elements and the amplifiers are mounted, the base being configured to support the radiating elements and the amplifiers and to discharge heat emitted by the radiating elements and/or the amplifiers while they are operating, the base comprising at least one fixed panel fixed to the chassis and at least one deployable panel hinged to the first panel, each of the panels supporting at least one of the radiating elements and an amplifier; and a two-phase loop , in which a fluid circulates and which is configured to recover the heat and transferred to the base, the two-phase loop comprising: two portions , each fixed to one of the two panels of the base; and flexible connections comprising at least one flexible thermal channel and connecting the portions of the two-phase loop, with the fluid circulating in the at least one flexible thermal channel. two portions , each fixed to one of the two panels of the base; and flexible connections comprising at least one flexible thermal channel and connecting the portions of the two-phase loop, with the fluid circulating in the at least one flexible thermal channel. <EOS>