WIRELESS PORTABLE ELECTRONIC DEVICE HAVING A CONDUCTIVE BODY THAT FUNCTIONS AS A RADIATOR

An apparatus, such as a wireless portable electronic device, is provided that includes a body formed of a conductive material. The body defines an internal cavity and an opening. The wireless portable electronic device also includes a ground plane disposed within the internal cavity and electromagnetically coupled to the body. The wireless portable electronic device additionally includes an antenna, such as a loop antenna or a monopole, disposed within the internal cavity and electromagnetically coupled to the body such that the body functions as a radiator. The wireless portable electronic device further includes a three-dimensional ground plane extension disposed within the internal cavity so that at least a part of the three-dimensional ground plane extension overlies the antenna. The three-dimensional ground plane extension is galvanically coupled to the ground plane and electromagnetically coupled to the body.