According to one general aspect, a computing device may include a conductive frame and a slot antenna formed, at least in part, by the conductive frame. The slot antenna defines a cavity that extends into the conductive frame from an opening on the conductive frame to a closed end defined by an internal portion of the conductive frame. The slot antenna includes a feed point disposed at a position along the slot antenna such that the slot antenna forms an open-circuited portion and a short-circuited portion, and the feed point is disposed between the open-circuited portion and the short-circuited portion. The computing device may also include a coupling element configured to be excited by an electrical signal via the feed point.