<p>A portable wireless device is provided with a first case (11) having a metal section; a second case (12); a hinge section (13) rotatably connecting the first case with the second case; a circuit board (18) provided in the second case with a ground pattern; and a power feeding section connected to the circuit board. The hinge section (13) has a rotating shaft (23) composed of a conductive metal, and the first case, the rotating shaft (23) and the ground pattern operate as an antenna element. The portable wireless device is further provided with a first conductor element (25), which is arranged in the fist case (11) at a prescribed interval from the rotating shaft (23) and has an electrical length equivalent to substantially a half wavelength of the wireless frequency.</p>
