Antenna and Heat Sink

An antenna 2 is used both as an RF radiator and as a heat sink. A device, such as an integrated circuit package 12, that generates unwanted heat may comprise an antenna and heatsink 2 placed in thermal contact with it. The antenna may be electrically connected to a component 12 either by one or more pins 14 or by capacitive coupling plates (fig 5 16,18), and may be attached by heat-sinking paste or adhesive. The antenna 2 may comprise: a two or three dimensional structure; a meander-line structure; and fins (fig 3, 33-37) of different lengths. The antenna may be used for an ultra-wideband wireless device in the frequency range 3 to 10 GHz, and for communications between such devices as computers, disc drives, printers, scanners, televisions, speakers PDAs, cameras and mobile phones