Antennas for handheld electronic devices

A wireless handheld electronic device comprising:

• storage that stores data;
• processing circuitry coupled to the storage that generates data for wireless transmission and that processes wirelessly received data;
• and
• wireless communications circuitry, wherein the wireless communications circuitry comprises transceiver circuitry, an antenna, and a transmission line, wherein the transmission line has a ground conductor and a signal conductor and conveys radio-frequency signals for the antenna between the transceiver circuitry and the antenna, wherein the antenna comprises a planar ground element with a dielectric-filled slot and a planar resonating element located above the slot.

Wireless communications circuitry comprising:

• at least one wireless transceiver circuit that transmits and receives radio-frequency signals;
• an antenna comprising a planar ground element having portions that define a dielectric-filled slot and comprising a planar resonating element located above the slot;
• a connector having a ground terminal connected to the planar ground element and having a signal terminal;
• and
• at least one coaxial cable connected between the wireless transceiver circuit and the connector, wherein the coaxial cable has an outer ground conductor connected to the ground terminal and has a signal conductor connected to the signal terminal.

A handheld electronic device, comprising:

• a housing having lateral dimensions that form a rectangle and having a thickness in a vertical dimension that is perpendicular to the lateral dimensions;
• a substantially rectangular ground plane element having lateral dimensions substantially equal to the lateral dimensions of the housing, wherein portions of the rectangular ground plane element define a dielectric-filled rectangular slot at one end of the rectangular ground plane element;
• and
• a planar antenna resonating element that is located above the slot at a height from the rectangular ground plane element in the vertical dimension that is less than the lateral dimensions, wherein the planar antenna resonating element and the rectangular ground plane element form an antenna for the handheld electronic device.