A coplanar waveguide fed roof-shaped multiband antenna is proposed for Wireless Personal Area Network applications. To operate effectively at the desired multi bands, the antenna consists of a roof-shaped radiation unit, a right microstrip radiation unit, a left microstrip radiation unit and an independent inverted L-shaped microstrip radiation unit. The roof-shaped radiation unit is connected with the coplanar waveguide feed. There are two symmetrical antennae on the top of the roof-shaped radiation unit to play the role of coupling. The right independent inverted L-shape microstrip unit is the main radiation unit at 900 MHz, which is composed of two mutually perpendicularly connected microstrip lines. The left microstrip radiation unit connected with the roof-shaped radiation unit is the main radiation unit at 500 MHz. The measured results prove the antenna operates at multiple frequency bands of 500/900/1500/2400 MHz.