In this paper, a compact and wideband printed monopole antenna is proposed. The proposed antenna is fed by CPW line and has two stubs for impedance matching. A simple monopole element has resonance frequency of 2.5 GHz (low resonance frequency). High resonance frequency of 5.5 GHz and wideband characteristic can be achieved by adjusting the position and size of stubs. The designed antenna has dimension of 0.125 λ0 height and 0.16 λ0 width where λ0 is the free-space wavelength at 2.5 GHz. The measured bandwidth of the antenna is 3.56 GHz (2.47-6.03 GHz) for S11 less than -10 dB. FDTD method is used to analyze the proposed antenna with wideband characteristic.