A planar inverted-F antenna includes a body (300), a feed wire (400), a
shorting strip (500), and a metallic ground plane (200). The body is used
for radiating and receiving radio frequency signals, and includes a
radiating end (310) and a shorting end (320). The shorting end is
electrically connected to a metallic ground plane by the shorting strip.
The feed wire is electrically connected to the body. The body includes
bent portions (330, 340) disposed between the shorting end and the
radiating end. Due to the bent portions, the planar inverted-F antenna
has a compact profile and a smaller size. In addition, the bent portions
generate an inductance effect that can regulate the input impedance of
the planar inverted-F antenna.