Abstract: The socket system comprises a set of vertically-stackable sockets. A first socket mounts on a printed circuit board to receive a first chip module, and a second socket stacks on the first socket to receive a second chip module. The first socket includes a first set of embedded contacts to electrically connect the first chip module to the printed circuit board, and a second set of embedded contacts to electrically connect the second socket to the printed circuit board. The second socket includes a third set of embedded contacts to electrically connect the second chip module to the printed circuit board. System upgrades are enabled by replacing the chip modules.

Abstract: A portable communication device and an antenna system include a part having a ground plane located within and extending through the part. A hinging section is joined to the part and stretches along an end of the part for providing rotation of the part in relation to another part around an axis and providing a hinge cavity inside the hinging section surrounding the axis. An antenna element is at least partly provided inside the hinge cavity and the ground plane extends from the part into the hinge cavity at a distance from the antenna element.