Antennas for computers with conductive chassis

A computing device comprising:

• a conductive chassis;
• a slot antenna formed, at least in part, by the conductive chassis, the slot antenna defining a cavity that extends into the conductive chassis from an open end on the conductive chassis to a closed end defined by an internal portion of the conductive chassis,
• the conductive chassis including an electrically isolated portion extending on a first side of the slot antenna and a ground portion extending on a second side of the slot antenna such that the electrically isolated portion and the ground portion are separated by the slot antenna, the electrically isolated portion configured to be excited such that a first resonance frequency is created within the slot antenna;
• and
• a coupling element capacitively coupled to the slot antenna, the coupling element being separated from the slot antenna by a non-conductor separator, the non-conductor separator preventing a direct electrical coupling between the coupling element and the slot antenna, the coupling element including a first end portion and a second end portion, the first end portion of the coupling element having a grounding point, the second end portion of the coupling element having a feed point, the grounding point of the coupling element being coupled to the ground portion of the conductive chassis, wherein a distance between the grounding point of the coupling element and the feed point of the coupling element controls a second resonance frequency of the slot antenna.