An antenna array for a transmit-array antenna system

Abstract

According to an example aspect of the present invention, there is provided an antenna array (100) for a transmit-array antenna system with a fixed feed antenna, comprising an inner radiating surface (110) for receiving a first signal from the fixed feed antenna, an outer radiating surface (120) for emitting a second signal from the antenna array, and at least two platforms (130), wherein the at least two platforms (130) are substantially parallel to one another and each of the at least two platform (130) comprises multiple electrical integrated circuits, for operatively connecting the inner and outer radiating surfaces (110,120), the antenna array (100) further comprising at least two thermally insulated heat pipes (410a, 410b) between adjacent platforms of the at least two platforms (130), wherein a first part of each thermally insulated heat pipe is arranged to transfer heat from one electrical integrated circuit or two consecutive electrical integrated circuits of one platform (130) to a second part of the thermally insulated heat pipe, and the second part of the thermally insulated heat pipe is substantially in a direction perpendicular to the normal of the inner and outer radiating surfaces (110, 120) and arranged to transfer heat from said one or two consecutive electrical integrated circuits to outside of the antenna array (100) via a side of the antenna array (100) to which the at least two platforms (130) extend.